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{
"image": "mcr.microsoft.com/devcontainers/universal:2-linux",
"waitFor": "onCreateCommand",
"onCreateCommand": ".devcontainer/setup.sh",
"updateContentCommand": "cargo build",
"postCreateCommand": "",
"postAttachCommand": {
"server": "rustlings watch"
},
"customizations": {
"vscode": {
"extensions": [
"rust-lang.rust-analyzer"
]
}
}
}

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#!/bin/bash
curl https://sh.rustup.rs -sSf | sh -s -- -y
# Update current shell environment variables after install to find rustup
. "$HOME/.cargo/env"
rustup install stable
bash install.sh

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root = true
[*.rs]
end_of_line = lf
insert_final_newline = true
indent_style = space
indent_size = 4

4
.envrc
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#!/usr/bin/env bash
# Automatically Load nix devShell w/dotenv
use flake

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name: Rustlings Tests
on:
push:
branches: [ main ]
pull_request:
branches: [ main ]
env:
CARGO_TERM_COLOR: always
jobs:
fmt:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- uses: dtolnay/rust-toolchain@stable
with:
components: rustfmt
- uses: DavidAnson/markdownlint-cli2-action@v9
with:
globs: "exercises/**/*.md"
- name: Run cargo fmt
run: |
cargo fmt --all -- --check
test:
runs-on: ${{ matrix.os }}
strategy:
matrix:
os: [ubuntu-latest, windows-latest, macOS-latest]
steps:
- uses: actions/checkout@v3
- uses: dtolnay/rust-toolchain@stable
- uses: swatinem/rust-cache@v2
- name: Run cargo test
run: |
cargo test

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# Workflow to build your docs with oranda (and mdbook)
# and deploy them to Github Pages
name: Web
# We're going to push to the gh-pages branch, so we need that permission
permissions:
contents: write
# What situations do we want to build docs in?
# All of these work independently and can be removed / commented out
# if you don't want oranda/mdbook running in that situation
on:
# Check that a PR didn't break docs!
#
# Note that the "Deploy to Github Pages" step won't run in this mode,
# so this won't have any side-effects. But it will tell you if a PR
# completely broke oranda/mdbook. Sadly we don't provide previews (yet)!
pull_request:
# Whenever something gets pushed to main, update the docs!
# This is great for getting docs changes live without cutting a full release.
#
# Note that if you're using cargo-dist, this will "race" the Release workflow
# that actually builds the Github Release that oranda tries to read (and
# this will almost certainly complete first). As a result you will publish
# docs for the latest commit but the oranda landing page won't know about
# the latest release. The workflow_run trigger below will properly wait for
# cargo-dist, and so this half-published state will only last for ~10 minutes.
#
# If you only want docs to update with releases, disable this, or change it to
# a "release" branch. You can, of course, also manually trigger a workflow run
# when you want the docs to update.
push:
branches:
- main
# Whenever a workflow called "Release" completes, update the docs!
#
# If you're using cargo-dist, this is recommended, as it will ensure that
# oranda always sees the latest release right when it's available. Note
# however that Github's UI is wonky when you use workflow_run, and won't
# show this workflow as part of any commit. You have to go to the "actions"
# tab for your repo to see this one running (the gh-pages deploy will also
# only show up there).
workflow_run:
workflows: [ "Release" ]
types:
- completed
# Alright, let's do it!
jobs:
web:
name: Build and deploy site and docs
runs-on: ubuntu-latest
steps:
# Setup
- uses: actions/checkout@v3
with:
fetch-depth: 0
- uses: dtolnay/rust-toolchain@stable
- uses: swatinem/rust-cache@v2
# If you use any mdbook plugins, here's the place to install them!
# Install and run oranda (and mdbook)
# This will write all output to ./public/ (including copying mdbook's output to there)
- name: Install and run oranda
run: |
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/axodotdev/oranda/releases/download/v0.3.1/oranda-installer.sh | sh
oranda build
# Deploy to our gh-pages branch (creating it if it doesn't exist)
# the "public" dir that oranda made above will become the root dir
# of this branch.
#
# Note that once the gh-pages branch exists, you must
# go into repo's settings > pages and set "deploy from branch: gh-pages"
# the other defaults work fine.
- name: Deploy to Github Pages
uses: JamesIves/github-pages-deploy-action@v4.4.1
# ONLY if we're on main (so no PRs or feature branches allowed!)
if: ${{ github.ref == 'refs/heads/main' }}
with:
branch: gh-pages
# Gotta tell the action where to find oranda's output
folder: public
token: ${{ secrets.GITHUB_TOKEN }}
single-commit: true

18
.gitignore vendored
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*.swp
target/
**/*.rs.bk
.DS_Store
*.pdb
exercises/clippy/Cargo.toml
exercises/clippy/Cargo.lock
rust-project.json
.idea
.vscode/*
!.vscode/extensions.json
*.iml
*.o
public/
.direnv/
# Local Netlify folder
.netlify

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tasks:
- init: /workspace/rustlings/install.sh
command: /workspace/.cargo/bin/rustlings watch
vscode:
extensions:
- rust-lang.rust-analyzer@0.3.1348

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# MD013/line-length Line length, Expected: 80
MD013: false

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{
"recommendations": [
"rust-lang.rust-analyzer"
]
}

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## Authors
This file lists the people that have contributed to this project.
Excluded from this list are @carols10cents and @diannasoreil, the principal
authors.
<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
<!-- prettier-ignore-start -->
<!-- markdownlint-disable -->
<table>
<tbody>
<tr>
<td align="center" valign="top" width="12.5%"><a href="http://carol-nichols.com"><img src="https://avatars2.githubusercontent.com/u/193874?v=4?s=100" width="100px;" alt="Carol (Nichols &#124;&#124; Goulding)"/><br /><sub><b>Carol (Nichols &#124;&#124; Goulding)</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=carols10cents" title="Code">💻</a> <a href="#content-carols10cents" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://twitter.com/QuietMisdreavus"><img src="https://avatars2.githubusercontent.com/u/5217170?v=4?s=100" width="100px;" alt="QuietMisdreavus"/><br /><sub><b>QuietMisdreavus</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=QuietMisdreavus" title="Code">💻</a> <a href="#content-QuietMisdreavus" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/robertlugg"><img src="https://avatars0.githubusercontent.com/u/6054540?v=4?s=100" width="100px;" alt="Robert M Lugg"/><br /><sub><b>Robert M Lugg</b></sub></a><br /><a href="#content-robertlugg" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://hynek.me/about/"><img src="https://avatars3.githubusercontent.com/u/41240?v=4?s=100" width="100px;" alt="Hynek Schlawack"/><br /><sub><b>Hynek Schlawack</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=hynek" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://spacekookie.de"><img src="https://avatars0.githubusercontent.com/u/7669898?v=4?s=100" width="100px;" alt="Katharina Fey"/><br /><sub><b>Katharina Fey</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=spacekookie" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/lukabavdaz"><img src="https://avatars0.githubusercontent.com/u/9624558?v=4?s=100" width="100px;" alt="lukabavdaz"/><br /><sub><b>lukabavdaz</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=lukabavdaz" title="Code">💻</a> <a href="#content-lukabavdaz" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://vestera.as"><img src="https://avatars2.githubusercontent.com/u/4187449?v=4?s=100" width="100px;" alt="Erik Vesteraas"/><br /><sub><b>Erik Vesteraas</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=evestera" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Delet0r"><img src="https://avatars1.githubusercontent.com/u/23195618?v=4?s=100" width="100px;" alt="delet0r"/><br /><sub><b>delet0r</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Delet0r" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="http://phinary.ca"><img src="https://avatars1.githubusercontent.com/u/10522375?v=4?s=100" width="100px;" alt="Shaun Bennett"/><br /><sub><b>Shaun Bennett</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=shaunbennett" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/abagshaw"><img src="https://avatars2.githubusercontent.com/u/8594541?v=4?s=100" width="100px;" alt="Andrew Bagshaw"/><br /><sub><b>Andrew Bagshaw</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=abagshaw" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://ai6ua.net/"><img src="https://avatars2.githubusercontent.com/u/175578?v=4?s=100" width="100px;" alt="Kyle Isom"/><br /><sub><b>Kyle Isom</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=kisom" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/ColinPitrat"><img src="https://avatars3.githubusercontent.com/u/1541863?v=4?s=100" width="100px;" alt="Colin Pitrat"/><br /><sub><b>Colin Pitrat</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=ColinPitrat" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://zacanger.com"><img src="https://avatars3.githubusercontent.com/u/12520493?v=4?s=100" width="100px;" alt="Zac Anger"/><br /><sub><b>Zac Anger</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=zacanger" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/mgeier"><img src="https://avatars1.githubusercontent.com/u/705404?v=4?s=100" width="100px;" alt="Matthias Geier"/><br /><sub><b>Matthias Geier</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=mgeier" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/cjpearce"><img src="https://avatars1.githubusercontent.com/u/3453268?v=4?s=100" width="100px;" alt="Chris Pearce"/><br /><sub><b>Chris Pearce</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cjpearce" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://yvan-sraka.github.io"><img src="https://avatars2.githubusercontent.com/u/705213?v=4?s=100" width="100px;" alt="Yvan Sraka"/><br /><sub><b>Yvan Sraka</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=yvan-sraka" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/dendi239"><img src="https://avatars3.githubusercontent.com/u/16478650?v=4?s=100" width="100px;" alt="Denys Smirnov"/><br /><sub><b>Denys Smirnov</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=dendi239" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/eddyp"><img src="https://avatars2.githubusercontent.com/u/123772?v=4?s=100" width="100px;" alt="eddyp"/><br /><sub><b>eddyp</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=eddyp" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://about.me/BrianKung"><img src="https://avatars1.githubusercontent.com/u/2836167?v=4?s=100" width="100px;" alt="Brian Kung"/><br /><sub><b>Brian Kung</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=briankung" title="Code">💻</a> <a href="#content-briankung" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://rcousineau.gitlab.io"><img src="https://avatars3.githubusercontent.com/u/281039?v=4?s=100" width="100px;" alt="Russell"/><br /><sub><b>Russell</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=miller-time" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://danwilhelm.com"><img src="https://avatars3.githubusercontent.com/u/6137185?v=4?s=100" width="100px;" alt="Dan Wilhelm"/><br /><sub><b>Dan Wilhelm</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=danwilhelm" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Jesse-Cameron"><img src="https://avatars3.githubusercontent.com/u/3723654?v=4?s=100" width="100px;" alt="Jesse"/><br /><sub><b>Jesse</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Jesse-Cameron" title="Code">💻</a> <a href="#content-Jesse-Cameron" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/MrFroop"><img src="https://avatars3.githubusercontent.com/u/196700?v=4?s=100" width="100px;" alt="Fredrik Jambrén"/><br /><sub><b>Fredrik Jambrén</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=MrFroop" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/petemcfarlane"><img src="https://avatars3.githubusercontent.com/u/3472717?v=4?s=100" width="100px;" alt="Pete McFarlane"/><br /><sub><b>Pete McFarlane</b></sub></a><br /><a href="#content-petemcfarlane" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/nkanderson"><img src="https://avatars0.githubusercontent.com/u/4128825?v=4?s=100" width="100px;" alt="nkanderson"/><br /><sub><b>nkanderson</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nkanderson" title="Code">💻</a> <a href="#content-nkanderson" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/ajaxm"><img src="https://avatars0.githubusercontent.com/u/13360138?v=4?s=100" width="100px;" alt="Ajax M"/><br /><sub><b>Ajax M</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=ajaxm" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://dylnuge.com"><img src="https://avatars2.githubusercontent.com/u/118624?v=4?s=100" width="100px;" alt="Dylan Nugent"/><br /><sub><b>Dylan Nugent</b></sub></a><br /><a href="#content-Dylnuge" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/vyaslav"><img src="https://avatars0.githubusercontent.com/u/1385427?v=4?s=100" width="100px;" alt="vyaslav"/><br /><sub><b>vyaslav</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=vyaslav" title="Code">💻</a> <a href="#content-vyaslav" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://join.sfxd.org"><img src="https://avatars1.githubusercontent.com/u/17297466?v=4?s=100" width="100px;" alt="George"/><br /><sub><b>George</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=gdoenlen" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/nyxtom"><img src="https://avatars2.githubusercontent.com/u/222763?v=4?s=100" width="100px;" alt="Thomas Holloway"/><br /><sub><b>Thomas Holloway</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nyxtom" title="Code">💻</a> <a href="#content-nyxtom" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/workingjubilee"><img src="https://avatars1.githubusercontent.com/u/46493976?v=4?s=100" width="100px;" alt="Jubilee"/><br /><sub><b>Jubilee</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=workingjubilee" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/WofWca"><img src="https://avatars1.githubusercontent.com/u/39462442?v=4?s=100" width="100px;" alt="WofWca"/><br /><sub><b>WofWca</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=WofWca" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/jrvidal"><img src="https://avatars0.githubusercontent.com/u/1636604?v=4?s=100" width="100px;" alt="Roberto Vidal"/><br /><sub><b>Roberto Vidal</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jrvidal" title="Code">💻</a> <a href="https://github.com/rust-lang/rustlings/commits?author=jrvidal" title="Documentation">📖</a> <a href="#ideas-jrvidal" title="Ideas, Planning, & Feedback">🤔</a> <a href="#maintenance-jrvidal" title="Maintenance">🚧</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/jensim"><img src="https://avatars0.githubusercontent.com/u/3663856?v=4?s=100" width="100px;" alt="Jens"/><br /><sub><b>Jens</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jensim" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://rahatah.me/d"><img src="https://avatars3.githubusercontent.com/u/3174006?v=4?s=100" width="100px;" alt="Rahat Ahmed"/><br /><sub><b>Rahat Ahmed</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=rahatarmanahmed" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/AbdouSeck"><img src="https://avatars2.githubusercontent.com/u/6490055?v=4?s=100" width="100px;" alt="Abdou Seck"/><br /><sub><b>Abdou Seck</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=AbdouSeck" title="Code">💻</a> <a href="#content-AbdouSeck" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/pulls?q=is%3Apr+reviewed-by%3AAbdouSeck" title="Reviewed Pull Requests">👀</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://codehearts.com"><img src="https://avatars0.githubusercontent.com/u/2885412?v=4?s=100" width="100px;" alt="Katie"/><br /><sub><b>Katie</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=codehearts" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Socratides"><img src="https://avatars3.githubusercontent.com/u/27732983?v=4?s=100" width="100px;" alt="Socrates"/><br /><sub><b>Socrates</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Socratides" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/gnodarse"><img src="https://avatars3.githubusercontent.com/u/46761795?v=4?s=100" width="100px;" alt="gnodarse"/><br /><sub><b>gnodarse</b></sub></a><br /><a href="#content-gnodarse" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/harrisonmetz"><img src="https://avatars1.githubusercontent.com/u/7883408?v=4?s=100" width="100px;" alt="Harrison Metzger"/><br /><sub><b>Harrison Metzger</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=harrisonmetz" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/TorbenJ"><img src="https://avatars2.githubusercontent.com/u/9077102?v=4?s=100" width="100px;" alt="Torben Jonas"/><br /><sub><b>Torben Jonas</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=TorbenJ" title="Code">💻</a> <a href="#content-TorbenJ" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://paulbissex.com/"><img src="https://avatars0.githubusercontent.com/u/641?v=4?s=100" width="100px;" alt="Paul Bissex"/><br /><sub><b>Paul Bissex</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=pbx" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/sjmann"><img src="https://avatars0.githubusercontent.com/u/6589896?v=4?s=100" width="100px;" alt="Steven Mann"/><br /><sub><b>Steven Mann</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sjmann" title="Code">💻</a> <a href="#content-sjmann" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://smmdb.net/"><img src="https://avatars2.githubusercontent.com/u/5855071?v=4?s=100" width="100px;" alt="Mario Reder"/><br /><sub><b>Mario Reder</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Tarnadas" title="Code">💻</a> <a href="#content-Tarnadas" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://keybase.io/skim"><img src="https://avatars0.githubusercontent.com/u/47347?v=4?s=100" width="100px;" alt="skim"/><br /><sub><b>skim</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sl4m" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/sanjaykdragon"><img src="https://avatars1.githubusercontent.com/u/10261698?v=4?s=100" width="100px;" alt="Sanjay K"/><br /><sub><b>Sanjay K</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sanjaykdragon" title="Code">💻</a> <a href="#content-sanjaykdragon" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://www.rohanjain.in"><img src="https://avatars1.githubusercontent.com/u/343499?v=4?s=100" width="100px;" alt="Rohan Jain"/><br /><sub><b>Rohan Jain</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=crodjer" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://www.saidaspen.se"><img src="https://avatars1.githubusercontent.com/u/7727687?v=4?s=100" width="100px;" alt="Said Aspen"/><br /><sub><b>Said Aspen</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=saidaspen" title="Code">💻</a> <a href="#content-saidaspen" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/uce"><img src="https://avatars3.githubusercontent.com/u/1756620?v=4?s=100" width="100px;" alt="Ufuk Celebi"/><br /><sub><b>Ufuk Celebi</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=uce" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/lebedevsergey"><img src="https://avatars2.githubusercontent.com/u/7325764?v=4?s=100" width="100px;" alt="lebedevsergey"/><br /><sub><b>lebedevsergey</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=lebedevsergey" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/avrong"><img src="https://avatars2.githubusercontent.com/u/6342851?v=4?s=100" width="100px;" alt="Aleksei Trifonov"/><br /><sub><b>Aleksei Trifonov</b></sub></a><br /><a href="#content-avrong" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://drn.ie"><img src="https://avatars2.githubusercontent.com/u/411136?v=4?s=100" width="100px;" alt="Darren Meehan"/><br /><sub><b>Darren Meehan</b></sub></a><br /><a href="#content-Darrenmeehan" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/jihchi"><img src="https://avatars1.githubusercontent.com/u/87983?v=4?s=100" width="100px;" alt="Jihchi Lee"/><br /><sub><b>Jihchi Lee</b></sub></a><br /><a href="#content-jihchi" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/bertonha"><img src="https://avatars3.githubusercontent.com/u/1225902?v=4?s=100" width="100px;" alt="Christofer Bertonha"/><br /><sub><b>Christofer Bertonha</b></sub></a><br /><a href="#content-bertonha" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/apatniv"><img src="https://avatars2.githubusercontent.com/u/22565917?v=4?s=100" width="100px;" alt="Vivek Bharath Akupatni"/><br /><sub><b>Vivek Bharath Akupatni</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=apatniv" title="Code">💻</a> <a href="https://github.com/rust-lang/rustlings/commits?author=apatniv" title="Tests">⚠️</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/DiD92"><img src="https://avatars3.githubusercontent.com/u/6002416?v=4?s=100" width="100px;" alt="Dídac Sementé Fernández"/><br /><sub><b>Dídac Sementé Fernández</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=DiD92" title="Code">💻</a> <a href="#content-DiD92" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/wrobstory"><img src="https://avatars3.githubusercontent.com/u/2601457?v=4?s=100" width="100px;" alt="Rob Story"/><br /><sub><b>Rob Story</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=wrobstory" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/siobhanjacobson"><img src="https://avatars2.githubusercontent.com/u/28983835?v=4?s=100" width="100px;" alt="Siobhan Jacobson"/><br /><sub><b>Siobhan Jacobson</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=siobhanjacobson" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://www.linkedin.com/in/evancarroll/"><img src="https://avatars2.githubusercontent.com/u/19922?v=4?s=100" width="100px;" alt="Evan Carroll"/><br /><sub><b>Evan Carroll</b></sub></a><br /><a href="#content-EvanCarroll" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://www.jawaadmahmood.com"><img src="https://avatars3.githubusercontent.com/u/95606?v=4?s=100" width="100px;" alt="Jawaad Mahmood"/><br /><sub><b>Jawaad Mahmood</b></sub></a><br /><a href="#content-jmahmood" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/GaurangTandon"><img src="https://avatars1.githubusercontent.com/u/6308683?v=4?s=100" width="100px;" alt="Gaurang Tandon"/><br /><sub><b>Gaurang Tandon</b></sub></a><br /><a href="#content-GaurangTandon" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/dev-cyprium"><img src="https://avatars1.githubusercontent.com/u/6002628?v=4?s=100" width="100px;" alt="Stefan Kupresak"/><br /><sub><b>Stefan Kupresak</b></sub></a><br /><a href="#content-dev-cyprium" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/greg-el"><img src="https://avatars3.githubusercontent.com/u/45019882?v=4?s=100" width="100px;" alt="Greg Leonard"/><br /><sub><b>Greg Leonard</b></sub></a><br /><a href="#content-greg-el" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://ryanpcmcquen.org"><img src="https://avatars3.githubusercontent.com/u/772937?v=4?s=100" width="100px;" alt="Ryan McQuen"/><br /><sub><b>Ryan McQuen</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=ryanpcmcquen" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/AnnikaCodes"><img src="https://avatars3.githubusercontent.com/u/56906084?v=4?s=100" width="100px;" alt="Annika"/><br /><sub><b>Annika</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/pulls?q=is%3Apr+reviewed-by%3AAnnikaCodes" title="Reviewed Pull Requests">👀</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://darnuria.eu"><img src="https://avatars1.githubusercontent.com/u/2827553?v=4?s=100" width="100px;" alt="Axel Viala"/><br /><sub><b>Axel Viala</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=darnuria" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://sazid.github.io"><img src="https://avatars1.githubusercontent.com/u/2370167?v=4?s=100" width="100px;" alt="Mohammed Sazid Al Rashid"/><br /><sub><b>Mohammed Sazid Al Rashid</b></sub></a><br /><a href="#content-sazid" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=sazid" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://codingthemsoftly.com"><img src="https://avatars1.githubusercontent.com/u/17479099?v=4?s=100" width="100px;" alt="Caleb Webber"/><br /><sub><b>Caleb Webber</b></sub></a><br /><a href="#maintenance-seeplusplus" title="Maintenance">🚧</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/pcn"><img src="https://avatars2.githubusercontent.com/u/1056756?v=4?s=100" width="100px;" alt="Peter N"/><br /><sub><b>Peter N</b></sub></a><br /><a href="#maintenance-pcn" title="Maintenance">🚧</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/seancad"><img src="https://avatars1.githubusercontent.com/u/47405611?v=4?s=100" width="100px;" alt="seancad"/><br /><sub><b>seancad</b></sub></a><br /><a href="#maintenance-seancad" title="Maintenance">🚧</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://willhayworth.com"><img src="https://avatars3.githubusercontent.com/u/181174?v=4?s=100" width="100px;" alt="Will Hayworth"/><br /><sub><b>Will Hayworth</b></sub></a><br /><a href="#content-wsh" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/chrizel"><img src="https://avatars3.githubusercontent.com/u/20802?v=4?s=100" width="100px;" alt="Christian Zeller"/><br /><sub><b>Christian Zeller</b></sub></a><br /><a href="#content-chrizel" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/jfchevrette"><img src="https://avatars.githubusercontent.com/u/3001?v=4?s=100" width="100px;" alt="Jean-Francois Chevrette"/><br /><sub><b>Jean-Francois Chevrette</b></sub></a><br /><a href="#content-jfchevrette" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=jfchevrette" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/jbaber"><img src="https://avatars.githubusercontent.com/u/1908117?v=4?s=100" width="100px;" alt="John Baber-Lucero"/><br /><sub><b>John Baber-Lucero</b></sub></a><br /><a href="#content-jbaber" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/tal-zvon"><img src="https://avatars.githubusercontent.com/u/3195851?v=4?s=100" width="100px;" alt="Tal"/><br /><sub><b>Tal</b></sub></a><br /><a href="#content-tal-zvon" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/apogeeoak"><img src="https://avatars.githubusercontent.com/u/59737221?v=4?s=100" width="100px;" alt="apogeeoak"/><br /><sub><b>apogeeoak</b></sub></a><br /><a href="#content-apogeeoak" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=apogeeoak" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://www.garfieldtech.com/"><img src="https://avatars.githubusercontent.com/u/254863?v=4?s=100" width="100px;" alt="Larry Garfield"/><br /><sub><b>Larry Garfield</b></sub></a><br /><a href="#content-Crell" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/circumspect"><img src="https://avatars.githubusercontent.com/u/40770208?v=4?s=100" width="100px;" alt="circumspect"/><br /><sub><b>circumspect</b></sub></a><br /><a href="#content-circumspect" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/cjwyett"><img src="https://avatars.githubusercontent.com/u/34195737?v=4?s=100" width="100px;" alt="Cyrus Wyett"/><br /><sub><b>Cyrus Wyett</b></sub></a><br /><a href="#content-cjwyett" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/cadolphs"><img src="https://avatars.githubusercontent.com/u/13894820?v=4?s=100" width="100px;" alt="cadolphs"/><br /><sub><b>cadolphs</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cadolphs" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://www.haveneer.com"><img src="https://avatars.githubusercontent.com/u/26146722?v=4?s=100" width="100px;" alt="Pascal H."/><br /><sub><b>Pascal H.</b></sub></a><br /><a href="#content-hpwxf" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://twitter.com/chapeupreto"><img src="https://avatars.githubusercontent.com/u/834048?v=4?s=100" width="100px;" alt="Rod Elias"/><br /><sub><b>Rod Elias</b></sub></a><br /><a href="#content-chapeupreto" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/blerchy"><img src="https://avatars.githubusercontent.com/u/2555355?v=4?s=100" width="100px;" alt="Matt Lebl"/><br /><sub><b>Matt Lebl</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=blerchy" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://flakolefluk.dev"><img src="https://avatars.githubusercontent.com/u/11986564?v=4?s=100" width="100px;" alt="Ignacio Le Fluk"/><br /><sub><b>Ignacio Le Fluk</b></sub></a><br /><a href="#content-flakolefluk" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/tlyu"><img src="https://avatars.githubusercontent.com/u/431873?v=4?s=100" width="100px;" alt="Taylor Yu"/><br /><sub><b>Taylor Yu</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=tlyu" title="Code">💻</a> <a href="#content-tlyu" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://zerotask.github.io"><img src="https://avatars.githubusercontent.com/u/20150243?v=4?s=100" width="100px;" alt="Patrick Hintermayer"/><br /><sub><b>Patrick Hintermayer</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Zerotask" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://petkopavlovski.com/"><img src="https://avatars.githubusercontent.com/u/32264020?v=4?s=100" width="100px;" alt="Pete Pavlovski"/><br /><sub><b>Pete Pavlovski</b></sub></a><br /><a href="#content-arthas168" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/k12ish"><img src="https://avatars.githubusercontent.com/u/45272873?v=4?s=100" width="100px;" alt="k12ish"/><br /><sub><b>k12ish</b></sub></a><br /><a href="#content-k12ish" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/hongshaoyang"><img src="https://avatars.githubusercontent.com/u/19281800?v=4?s=100" width="100px;" alt="Shao Yang Hong"/><br /><sub><b>Shao Yang Hong</b></sub></a><br /><a href="#content-hongshaoyang" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/bmacer"><img src="https://avatars.githubusercontent.com/u/13931806?v=4?s=100" width="100px;" alt="Brandon Macer"/><br /><sub><b>Brandon Macer</b></sub></a><br /><a href="#content-bmacer" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/stoiandan"><img src="https://avatars.githubusercontent.com/u/10388612?v=4?s=100" width="100px;" alt="Stoian Dan"/><br /><sub><b>Stoian Dan</b></sub></a><br /><a href="#content-stoiandan" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://about.me/pjdelport"><img src="https://avatars.githubusercontent.com/u/630271?v=4?s=100" width="100px;" alt="Pi Delport"/><br /><sub><b>Pi Delport</b></sub></a><br /><a href="#content-PiDelport" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/sateeshkumarb"><img src="https://avatars.githubusercontent.com/u/429263?v=4?s=100" width="100px;" alt="Sateesh "/><br /><sub><b>Sateesh </b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=sateeshkumarb" title="Code">💻</a> <a href="#content-sateeshkumarb" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/kayuapi"><img src="https://avatars.githubusercontent.com/u/10304328?v=4?s=100" width="100px;" alt="ZC"/><br /><sub><b>ZC</b></sub></a><br /><a href="#content-kayuapi" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/hyperparabolic"><img src="https://avatars.githubusercontent.com/u/12348474?v=4?s=100" width="100px;" alt="hyperparabolic"/><br /><sub><b>hyperparabolic</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=hyperparabolic" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://www.net4visions.at"><img src="https://avatars.githubusercontent.com/u/5228369?v=4?s=100" width="100px;" alt="arlecchino"/><br /><sub><b>arlecchino</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=kolbma" title="Documentation">📖</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://richthofen.io/"><img src="https://avatars.githubusercontent.com/u/7576730?v=4?s=100" width="100px;" alt="Richthofen"/><br /><sub><b>Richthofen</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jazzplato" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/cseltol"><img src="https://avatars.githubusercontent.com/u/64264529?v=4?s=100" width="100px;" alt="Ivan Nerazumov"/><br /><sub><b>Ivan Nerazumov</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cseltol" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/lauralindzey"><img src="https://avatars.githubusercontent.com/u/65185744?v=4?s=100" width="100px;" alt="lauralindzey"/><br /><sub><b>lauralindzey</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=lauralindzey" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/sinharaksh1t"><img src="https://avatars.githubusercontent.com/u/28585848?v=4?s=100" width="100px;" alt="Rakshit Sinha"/><br /><sub><b>Rakshit Sinha</b></sub></a><br /><a href="#content-sinharaksh1t" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/dbednar230"><img src="https://avatars.githubusercontent.com/u/54457902?v=4?s=100" width="100px;" alt="Damian"/><br /><sub><b>Damian</b></sub></a><br /><a href="#content-dbednar230" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://benarmstead.co.uk"><img src="https://avatars.githubusercontent.com/u/70973680?v=4?s=100" width="100px;" alt="Ben Armstead"/><br /><sub><b>Ben Armstead</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=benarmstead" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/anuk909"><img src="https://avatars.githubusercontent.com/u/34924662?v=4?s=100" width="100px;" alt="anuk909"/><br /><sub><b>anuk909</b></sub></a><br /><a href="#content-anuk909" title="Content">🖋</a> <a href="https://github.com/rust-lang/rustlings/commits?author=anuk909" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://granddaifuku.com/"><img src="https://avatars.githubusercontent.com/u/49578068?v=4?s=100" width="100px;" alt="granddaifuku"/><br /><sub><b>granddaifuku</b></sub></a><br /><a href="#content-granddaifuku" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://weilet.me"><img src="https://avatars.githubusercontent.com/u/32561597?v=4?s=100" width="100px;" alt="Weilet"/><br /><sub><b>Weilet</b></sub></a><br /><a href="#content-Weilet" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Millione"><img src="https://avatars.githubusercontent.com/u/38575932?v=4?s=100" width="100px;" alt="LIU JIE"/><br /><sub><b>LIU JIE</b></sub></a><br /><a href="#content-Millione" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/abusch"><img src="https://avatars.githubusercontent.com/u/506344?v=4?s=100" width="100px;" alt="Antoine Büsch"/><br /><sub><b>Antoine Büsch</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=abusch" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://frogtd.com/"><img src="https://avatars.githubusercontent.com/u/31412003?v=4?s=100" width="100px;" alt="frogtd"/><br /><sub><b>frogtd</b></sub></a><br /><a href="#content-frogtd" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/EmisonLu"><img src="https://avatars.githubusercontent.com/u/54395432?v=4?s=100" width="100px;" alt="Zhenghao Lu"/><br /><sub><b>Zhenghao Lu</b></sub></a><br /><a href="#content-EmisonLu" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://soundtrackyourbrand.com"><img src="https://avatars.githubusercontent.com/u/762956?v=4?s=100" width="100px;" alt="Fredrik Enestad"/><br /><sub><b>Fredrik Enestad</b></sub></a><br /><a href="#content-fredr" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://xuesong.pydevops.com"><img src="https://avatars.githubusercontent.com/u/18476085?v=4?s=100" width="100px;" alt="xuesong"/><br /><sub><b>xuesong</b></sub></a><br /><a href="#content-xuesongbj" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/MpdWalsh"><img src="https://avatars.githubusercontent.com/u/48160144?v=4?s=100" width="100px;" alt="Michael Walsh"/><br /><sub><b>Michael Walsh</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=MpdWalsh" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/alirezaghey"><img src="https://avatars.githubusercontent.com/u/26653424?v=4?s=100" width="100px;" alt="alirezaghey"/><br /><sub><b>alirezaghey</b></sub></a><br /><a href="#content-alirezaghey" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/frvannes16"><img src="https://avatars.githubusercontent.com/u/3188475?v=4?s=100" width="100px;" alt="Franklin van Nes"/><br /><sub><b>Franklin van Nes</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=frvannes16" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://nekonako.github.io"><img src="https://avatars.githubusercontent.com/u/46141275?v=4?s=100" width="100px;" alt="nekonako"/><br /><sub><b>nekonako</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nekonako" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/tan-zx"><img src="https://avatars.githubusercontent.com/u/67887489?v=4?s=100" width="100px;" alt="ZX"/><br /><sub><b>ZX</b></sub></a><br /><a href="#content-tan-zx" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/sundevilyang"><img src="https://avatars.githubusercontent.com/u/1499214?v=4?s=100" width="100px;" alt="Yang Wen"/><br /><sub><b>Yang Wen</b></sub></a><br /><a href="#content-sundevilyang" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://brandon-high.com"><img src="https://avatars.githubusercontent.com/u/759848?v=4?s=100" width="100px;" alt="Brandon High"/><br /><sub><b>Brandon High</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=highb" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/x-hgg-x"><img src="https://avatars.githubusercontent.com/u/39058530?v=4?s=100" width="100px;" alt="x-hgg-x"/><br /><sub><b>x-hgg-x</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=x-hgg-x" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://kisaragieffective.github.io"><img src="https://avatars.githubusercontent.com/u/48310258?v=4?s=100" width="100px;" alt="Kisaragi"/><br /><sub><b>Kisaragi</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=KisaragiEffective" title="Documentation">📖</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Kallu-A"><img src="https://avatars.githubusercontent.com/u/73198738?v=4?s=100" width="100px;" alt="Lucas Aries"/><br /><sub><b>Lucas Aries</b></sub></a><br /><a href="#content-Kallu-A" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/ragreenburg"><img src="https://avatars.githubusercontent.com/u/24358100?v=4?s=100" width="100px;" alt="ragreenburg"/><br /><sub><b>ragreenburg</b></sub></a><br /><a href="#content-ragreenburg" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/stevenfukase"><img src="https://avatars.githubusercontent.com/u/66785624?v=4?s=100" width="100px;" alt="stevenfukase"/><br /><sub><b>stevenfukase</b></sub></a><br /><a href="#content-stevenfukase" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/J-S-Kim"><img src="https://avatars.githubusercontent.com/u/17569303?v=4?s=100" width="100px;" alt="J-S-Kim"/><br /><sub><b>J-S-Kim</b></sub></a><br /><a href="#content-J-S-Kim" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Fointard"><img src="https://avatars.githubusercontent.com/u/9333398?v=4?s=100" width="100px;" alt="Fointard"/><br /><sub><b>Fointard</b></sub></a><br /><a href="#content-Fointard" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/rytheo"><img src="https://avatars.githubusercontent.com/u/22184325?v=4?s=100" width="100px;" alt="Ryan Lowe"/><br /><sub><b>Ryan Lowe</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=rytheo" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://www.dashen.tech"><img src="https://avatars.githubusercontent.com/u/15921519?v=4?s=100" width="100px;" alt="cui fliter"/><br /><sub><b>cui fliter</b></sub></a><br /><a href="#content-cuishuang" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/luskwater"><img src="https://avatars.githubusercontent.com/u/42529?v=4?s=100" width="100px;" alt="Ron Lusk"/><br /><sub><b>Ron Lusk</b></sub></a><br /><a href="#content-luskwater" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="http://liby.github.io/liby/"><img src="https://avatars.githubusercontent.com/u/38807139?v=4?s=100" width="100px;" alt="Bryan Lee"/><br /><sub><b>Bryan Lee</b></sub></a><br /><a href="#content-liby" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://nandaja.space"><img src="https://avatars.githubusercontent.com/u/2624550?v=4?s=100" width="100px;" alt="Nandaja Varma"/><br /><sub><b>Nandaja Varma</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nandajavarma" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/merelymyself"><img src="https://avatars.githubusercontent.com/u/88221256?v=4?s=100" width="100px;" alt="pwygab"/><br /><sub><b>pwygab</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=merelymyself" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://linkedin.com/in/lucasgrvarela"><img src="https://avatars.githubusercontent.com/u/37870368?v=4?s=100" width="100px;" alt="Lucas Grigolon Varela"/><br /><sub><b>Lucas Grigolon Varela</b></sub></a><br /><a href="#content-lucasgrvarela" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/bufo24"><img src="https://avatars.githubusercontent.com/u/32884105?v=4?s=100" width="100px;" alt="Bufo"/><br /><sub><b>Bufo</b></sub></a><br /><a href="#content-bufo24" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://rustnote.com"><img src="https://avatars.githubusercontent.com/u/77730378?v=4?s=100" width="100px;" alt="Jack Clayton"/><br /><sub><b>Jack Clayton</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=jackos" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/klkl0808"><img src="https://avatars.githubusercontent.com/u/24694249?v=4?s=100" width="100px;" alt="Konstantin"/><br /><sub><b>Konstantin</b></sub></a><br /><a href="#content-klkl0808" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/0pling"><img src="https://avatars.githubusercontent.com/u/104090344?v=4?s=100" width="100px;" alt="0pling"/><br /><sub><b>0pling</b></sub></a><br /><a href="#content-0pling" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/KatanaFluorescent"><img src="https://avatars.githubusercontent.com/u/60199077?v=4?s=100" width="100px;" alt="KatanaFluorescent"/><br /><sub><b>KatanaFluorescent</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=KatanaFluorescent" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Drew-Morris"><img src="https://avatars.githubusercontent.com/u/95818166?v=4?s=100" width="100px;" alt="Drew Morris"/><br /><sub><b>Drew Morris</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Drew-Morris" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/camperdue42"><img src="https://avatars.githubusercontent.com/u/43047763?v=4?s=100" width="100px;" alt="camperdue42"/><br /><sub><b>camperdue42</b></sub></a><br /><a href="#content-camperdue42" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/YsuOS"><img src="https://avatars.githubusercontent.com/u/30138661?v=4?s=100" width="100px;" alt="YsuOS"/><br /><sub><b>YsuOS</b></sub></a><br /><a href="#content-YsuOS" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://lichess.org/@/StevenEmily"><img src="https://avatars.githubusercontent.com/u/58114641?v=4?s=100" width="100px;" alt="Steven Nguyen"/><br /><sub><b>Steven Nguyen</b></sub></a><br /><a href="#content-icecream17" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://noahcairns.dev"><img src="https://avatars.githubusercontent.com/u/94420090?v=4?s=100" width="100px;" alt="nacairns1"/><br /><sub><b>nacairns1</b></sub></a><br /><a href="#content-nacairns1" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/pgjbz"><img src="https://avatars.githubusercontent.com/u/22059237?v=4?s=100" width="100px;" alt="Paulo Gabriel Justino Bezerra"/><br /><sub><b>Paulo Gabriel Justino Bezerra</b></sub></a><br /><a href="#content-pgjbz" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/jaystile"><img src="https://avatars.githubusercontent.com/u/46078028?v=4?s=100" width="100px;" alt="Jason"/><br /><sub><b>Jason</b></sub></a><br /><a href="#content-jaystile" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://exdx.github.io"><img src="https://avatars.githubusercontent.com/u/31546601?v=4?s=100" width="100px;" alt="exdx"/><br /><sub><b>exdx</b></sub></a><br /><a href="#content-exdx" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Jzow"><img src="https://avatars.githubusercontent.com/u/68860495?v=4?s=100" width="100px;" alt="James Zow"/><br /><sub><b>James Zow</b></sub></a><br /><a href="#content-Jzow" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://jamesabromley.wordpress.com/"><img src="https://avatars.githubusercontent.com/u/2474334?v=4?s=100" width="100px;" alt="James Bromley"/><br /><sub><b>James Bromley</b></sub></a><br /><a href="#content-jayber" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/swhiteCQC"><img src="https://avatars.githubusercontent.com/u/77438466?v=4?s=100" width="100px;" alt="swhiteCQC"/><br /><sub><b>swhiteCQC</b></sub></a><br /><a href="#content-swhiteCQC" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/neilpate"><img src="https://avatars.githubusercontent.com/u/7802334?v=4?s=100" width="100px;" alt="Neil Pate"/><br /><sub><b>Neil Pate</b></sub></a><br /><a href="#content-neilpate" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://wojexe.com"><img src="https://avatars.githubusercontent.com/u/21208490?v=4?s=100" width="100px;" alt="wojexe"/><br /><sub><b>wojexe</b></sub></a><br /><a href="#content-wojexe" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Tostapunk"><img src="https://avatars.githubusercontent.com/u/25140297?v=4?s=100" width="100px;" alt="Mattia Schiavon"/><br /><sub><b>Mattia Schiavon</b></sub></a><br /><a href="#content-Tostapunk" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://toucantoco.com"><img src="https://avatars.githubusercontent.com/u/18406791?v=4?s=100" width="100px;" alt="Eric Jolibois"/><br /><sub><b>Eric Jolibois</b></sub></a><br /><a href="#content-PrettyWood" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="http://edwinchang.vercel.app"><img src="https://avatars.githubusercontent.com/u/88263098?v=4?s=100" width="100px;" alt="Edwin Chang"/><br /><sub><b>Edwin Chang</b></sub></a><br /><a href="#content-EdwinChang24" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://saikat.dev/"><img src="https://avatars.githubusercontent.com/u/7412443?v=4?s=100" width="100px;" alt="Saikat Das"/><br /><sub><b>Saikat Das</b></sub></a><br /><a href="#content-saikatdas0790" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/thatlittleboy"><img src="https://avatars.githubusercontent.com/u/30731072?v=4?s=100" width="100px;" alt="Jeremy Goh"/><br /><sub><b>Jeremy Goh</b></sub></a><br /><a href="#content-thatlittleboy" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Lioness100"><img src="https://avatars.githubusercontent.com/u/65814829?v=4?s=100" width="100px;" alt="Lioness100"/><br /><sub><b>Lioness100</b></sub></a><br /><a href="#content-Lioness100" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/tvkn"><img src="https://avatars.githubusercontent.com/u/79277926?v=4?s=100" width="100px;" alt="Tristan Nicholls"/><br /><sub><b>Tristan Nicholls</b></sub></a><br /><a href="#content-tvkn" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://clairewang.net"><img src="https://avatars.githubusercontent.com/u/9344258?v=4?s=100" width="100px;" alt="Claire"/><br /><sub><b>Claire</b></sub></a><br /><a href="#content-clairew" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Mouwrice"><img src="https://avatars.githubusercontent.com/u/56763273?v=4?s=100" width="100px;" alt="Maurice Van Wassenhove"/><br /><sub><b>Maurice Van Wassenhove</b></sub></a><br /><a href="#content-Mouwrice" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://jmthree.com"><img src="https://avatars.githubusercontent.com/u/77524?v=4?s=100" width="100px;" alt="John Mendelewski"/><br /><sub><b>John Mendelewski</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=johnmendel" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="http://fakhoury.xyz"><img src="https://avatars.githubusercontent.com/u/20828724?v=4?s=100" width="100px;" alt="Brian Fakhoury"/><br /><sub><b>Brian Fakhoury</b></sub></a><br /><a href="#content-brianfakhoury" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/markusboehme"><img src="https://avatars.githubusercontent.com/u/5074759?v=4?s=100" width="100px;" alt="Markus Boehme"/><br /><sub><b>Markus Boehme</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=markusboehme" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/nico-vromans"><img src="https://avatars.githubusercontent.com/u/48183857?v=4?s=100" width="100px;" alt="Nico Vromans"/><br /><sub><b>Nico Vromans</b></sub></a><br /><a href="#content-nico-vromans" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/vostok92"><img src="https://avatars.githubusercontent.com/u/540339?v=4?s=100" width="100px;" alt="vostok92"/><br /><sub><b>vostok92</b></sub></a><br /><a href="#content-vostok92" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://magnusrodseth.vercel.app"><img src="https://avatars.githubusercontent.com/u/59113973?v=4?s=100" width="100px;" alt="Magnus Rødseth"/><br /><sub><b>Magnus Rødseth</b></sub></a><br /><a href="#content-magnusrodseth" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/rubiesonthesky"><img src="https://avatars.githubusercontent.com/u/2591240?v=4?s=100" width="100px;" alt="rubiesonthesky"/><br /><sub><b>rubiesonthesky</b></sub></a><br /><a href="#content-rubiesonthesky" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://www.gabrielbianconi.com/"><img src="https://avatars.githubusercontent.com/u/1275491?v=4?s=100" width="100px;" alt="Gabriel Bianconi"/><br /><sub><b>Gabriel Bianconi</b></sub></a><br /><a href="#content-GabrielBianconi" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Kodylow"><img src="https://avatars.githubusercontent.com/u/74332828?v=4?s=100" width="100px;" alt="Kody Low"/><br /><sub><b>Kody Low</b></sub></a><br /><a href="#content-Kodylow" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/rzrymiak"><img src="https://avatars.githubusercontent.com/u/106121613?v=4?s=100" width="100px;" alt="rzrymiak"/><br /><sub><b>rzrymiak</b></sub></a><br /><a href="#content-rzrymiak" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/miguelraz"><img src="https://avatars.githubusercontent.com/u/13056181?v=4?s=100" width="100px;" alt="Miguel Raz Guzmán Macedo"/><br /><sub><b>Miguel Raz Guzmán Macedo</b></sub></a><br /><a href="#content-miguelraz" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/memark"><img src="https://avatars.githubusercontent.com/u/318504?v=4?s=100" width="100px;" alt="Magnus Markling"/><br /><sub><b>Magnus Markling</b></sub></a><br /><a href="#content-memark" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/gasparitiago"><img src="https://avatars.githubusercontent.com/u/3237254?v=4?s=100" width="100px;" alt="Tiago De Gaspari"/><br /><sub><b>Tiago De Gaspari</b></sub></a><br /><a href="#content-gasparitiago" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/skaunov"><img src="https://avatars.githubusercontent.com/u/65976143?v=4?s=100" width="100px;" alt="skaunov"/><br /><sub><b>skaunov</b></sub></a><br /><a href="#content-skaunov" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://caljacobson.dev"><img src="https://avatars.githubusercontent.com/u/9152032?v=4?s=100" width="100px;" alt="Cal Jacobson"/><br /><sub><b>Cal Jacobson</b></sub></a><br /><a href="#content-cj81499" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/duchonic"><img src="https://avatars.githubusercontent.com/u/34117620?v=4?s=100" width="100px;" alt="Duchoud Nicolas"/><br /><sub><b>Duchoud Nicolas</b></sub></a><br /><a href="#content-duchonic" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/gfaugere"><img src="https://avatars.githubusercontent.com/u/11901979?v=4?s=100" width="100px;" alt="Gaëtan Faugère"/><br /><sub><b>Gaëtan Faugère</b></sub></a><br /><a href="#tool-gfaugere" title="Tools">🔧</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/bhbuehler"><img src="https://avatars.githubusercontent.com/u/25541343?v=4?s=100" width="100px;" alt="bhbuehler"/><br /><sub><b>bhbuehler</b></sub></a><br /><a href="#content-bhbuehler" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/nyurik"><img src="https://avatars.githubusercontent.com/u/1641515?v=4?s=100" width="100px;" alt="Yuri Astrakhan"/><br /><sub><b>Yuri Astrakhan</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nyurik" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://azzamsa.com"><img src="https://avatars.githubusercontent.com/u/17734314?v=4?s=100" width="100px;" alt="azzamsa"/><br /><sub><b>azzamsa</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=azzamsa" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/mvanschellebeeck"><img src="https://avatars.githubusercontent.com/u/17671052?v=4?s=100" width="100px;" alt="mvanschellebeeck"/><br /><sub><b>mvanschellebeeck</b></sub></a><br /><a href="#content-mvanschellebeeck" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/aaarkid"><img src="https://avatars.githubusercontent.com/u/39987510?v=4?s=100" width="100px;" alt="Arkid"/><br /><sub><b>Arkid</b></sub></a><br /><a href="#content-aaarkid" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://tfpk.dev"><img src="https://avatars.githubusercontent.com/u/10906982?v=4?s=100" width="100px;" alt="Tom Kunc"/><br /><sub><b>Tom Kunc</b></sub></a><br /><a href="#content-tfpk" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/mfurak"><img src="https://avatars.githubusercontent.com/u/38523093?v=4?s=100" width="100px;" alt="Marek Furák"/><br /><sub><b>Marek Furák</b></sub></a><br /><a href="#content-mfurak" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://winter.cafe"><img src="https://avatars.githubusercontent.com/u/78392041?v=4?s=100" width="100px;" alt="Winter"/><br /><sub><b>Winter</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=winterqt" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://moritzboeh.me"><img src="https://avatars.githubusercontent.com/u/42215704?v=4?s=100" width="100px;" alt="Moritz Böhme"/><br /><sub><b>Moritz Böhme</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=MoritzBoehme" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/craymel"><img src="https://avatars.githubusercontent.com/u/71062756?v=4?s=100" width="100px;" alt="craymel"/><br /><sub><b>craymel</b></sub></a><br /><a href="#content-craymel" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/tkburis"><img src="https://avatars.githubusercontent.com/u/20501289?v=4?s=100" width="100px;" alt="TK Buristrakul"/><br /><sub><b>TK Buristrakul</b></sub></a><br /><a href="#content-tkburis" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/HerschelW"><img src="https://avatars.githubusercontent.com/u/17935816?v=4?s=100" width="100px;" alt="Kent Worthington"/><br /><sub><b>Kent Worthington</b></sub></a><br /><a href="#content-HerschelW" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/seporterfield"><img src="https://avatars.githubusercontent.com/u/107010978?v=4?s=100" width="100px;" alt="seporterfield"/><br /><sub><b>seporterfield</b></sub></a><br /><a href="#content-seporterfield" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://www.linkedin.com/in/dbarrosop"><img src="https://avatars.githubusercontent.com/u/6246622?v=4?s=100" width="100px;" alt="David Barroso"/><br /><sub><b>David Barroso</b></sub></a><br /><a href="#infra-dbarrosop" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://distanz.ch"><img src="https://avatars.githubusercontent.com/u/539708?v=4?s=100" width="100px;" alt="Tobias Klauser"/><br /><sub><b>Tobias Klauser</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=tklauser" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/0xMySt1c"><img src="https://avatars.githubusercontent.com/u/101825630?v=4?s=100" width="100px;" alt="0xMySt1c"/><br /><sub><b>0xMySt1c</b></sub></a><br /><a href="#tool-0xMySt1c" title="Tools">🔧</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/AxolotlTears"><img src="https://avatars.githubusercontent.com/u/87157047?v=4?s=100" width="100px;" alt="Ten"/><br /><sub><b>Ten</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=AxolotlTears" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://h4x5p4c3.xyz"><img src="https://avatars.githubusercontent.com/u/66133688?v=4?s=100" width="100px;" alt="jones martin"/><br /><sub><b>jones martin</b></sub></a><br /><a href="#content-h4x5p4c3" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/cloppingemu"><img src="https://avatars.githubusercontent.com/u/12227963?v=4?s=100" width="100px;" alt="cloppingemu"/><br /><sub><b>cloppingemu</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=cloppingemu" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://github.com/zeromicro/go-zero"><img src="https://avatars.githubusercontent.com/u/1918356?v=4?s=100" width="100px;" alt="Kevin Wan"/><br /><sub><b>Kevin Wan</b></sub></a><br /><a href="#content-kevwan" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://kurowasaruby.cn"><img src="https://avatars.githubusercontent.com/u/43495006?v=4?s=100" width="100px;" alt="Ruby"/><br /><sub><b>Ruby</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=wjwrh" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/alexandergill"><img src="https://avatars.githubusercontent.com/u/7033716?v=4?s=100" width="100px;" alt="Alexander Gill"/><br /><sub><b>Alexander Gill</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=alexandergill" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://www.linkedin.com/in/jarrod-sanders/"><img src="https://avatars.githubusercontent.com/u/50600614?v=4?s=100" width="100px;" alt="Jarrod Sanders"/><br /><sub><b>Jarrod Sanders</b></sub></a><br /><a href="#content-kawaiiPlat" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/platformer"><img src="https://avatars.githubusercontent.com/u/40146328?v=4?s=100" width="100px;" alt="Andrew Sen"/><br /><sub><b>Andrew Sen</b></sub></a><br /><a href="#content-platformer" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://grzegorz-zur.com/"><img src="https://avatars.githubusercontent.com/u/5297583?v=4?s=100" width="100px;" alt="Grzegorz Żur"/><br /><sub><b>Grzegorz Żur</b></sub></a><br /><a href="#content-grzegorz-zur" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/black-puppydog"><img src="https://avatars.githubusercontent.com/u/189241?v=4?s=100" width="100px;" alt="Daan Wynen"/><br /><sub><b>Daan Wynen</b></sub></a><br /><a href="#content-black-puppydog" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Anush008"><img src="https://avatars.githubusercontent.com/u/46051506?v=4?s=100" width="100px;" alt="Anush"/><br /><sub><b>Anush</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=Anush008" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/shgew"><img src="https://avatars.githubusercontent.com/u/5584672?v=4?s=100" width="100px;" alt="Gleb Shevchenko"/><br /><sub><b>Gleb Shevchenko</b></sub></a><br /><a href="#content-shgew" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/mdmundo"><img src="https://avatars.githubusercontent.com/u/60408300?v=4?s=100" width="100px;" alt="Edmundo Paulino"/><br /><sub><b>Edmundo Paulino</b></sub></a><br /><a href="#infra-mdmundo" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/eroullit"><img src="https://avatars.githubusercontent.com/u/301795?v=4?s=100" width="100px;" alt="Emmanuel Roullit"/><br /><sub><b>Emmanuel Roullit</b></sub></a><br /><a href="#infra-eroullit" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://nidhalmessaoudi.herokuapp.com"><img src="https://avatars.githubusercontent.com/u/63377412?v=4?s=100" width="100px;" alt="Nidhal Messaoudi"/><br /><sub><b>Nidhal Messaoudi</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=nidhalmessaoudi" title="Code">💻</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/MahdiBM"><img src="https://avatars.githubusercontent.com/u/54685446?v=4?s=100" width="100px;" alt="Mahdi Bahrami"/><br /><sub><b>Mahdi Bahrami</b></sub></a><br /><a href="#tool-MahdiBM" title="Tools">🔧</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Nagidal"><img src="https://avatars.githubusercontent.com/u/7075397?v=4?s=100" width="100px;" alt="Nagidal"/><br /><sub><b>Nagidal</b></sub></a><br /><a href="#content-Nagidal" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://adabrew.com"><img src="https://avatars.githubusercontent.com/u/25161597?v=4?s=100" width="100px;" alt="Adam Brewer"/><br /><sub><b>Adam Brewer</b></sub></a><br /><a href="#content-adamhb123" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/eugkhp"><img src="https://avatars.githubusercontent.com/u/25910599?v=4?s=100" width="100px;" alt="Eugene"/><br /><sub><b>Eugene</b></sub></a><br /><a href="#tool-eugkhp" title="Tools">🔧</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://social.linux.pizza/@navicore"><img src="https://avatars.githubusercontent.com/u/110999?v=4?s=100" width="100px;" alt="Ed Sweeney"/><br /><sub><b>Ed Sweeney</b></sub></a><br /><a href="#content-navicore" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/javihernant"><img src="https://avatars.githubusercontent.com/u/73640929?v=4?s=100" width="100px;" alt="javihernant"/><br /><sub><b>javihernant</b></sub></a><br /><a href="#content-javihernant" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/VegardMatthey"><img src="https://avatars.githubusercontent.com/u/59250656?v=4?s=100" width="100px;" alt="Vegard"/><br /><sub><b>Vegard</b></sub></a><br /><a href="#content-VegardMatthey" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/ryanwhitehouse"><img src="https://avatars.githubusercontent.com/u/13400784?v=4?s=100" width="100px;" alt="Ryan Whitehouse"/><br /><sub><b>Ryan Whitehouse</b></sub></a><br /><a href="#content-ryanwhitehouse" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/guoard"><img src="https://avatars.githubusercontent.com/u/65511355?v=4?s=100" width="100px;" alt="Ali Afsharzadeh"/><br /><sub><b>Ali Afsharzadeh</b></sub></a><br /><a href="#content-guoard" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="http://keogami.ml"><img src="https://avatars.githubusercontent.com/u/41939011?v=4?s=100" width="100px;" alt="Keogami"/><br /><sub><b>Keogami</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=keogami" title="Documentation">📖</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/ahresse"><img src="https://avatars.githubusercontent.com/u/28402488?v=4?s=100" width="100px;" alt="Alexandre Esse"/><br /><sub><b>Alexandre Esse</b></sub></a><br /><a href="#content-ahresse" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://resilient.tech"><img src="https://avatars.githubusercontent.com/u/16315650?v=4?s=100" width="100px;" alt="Sagar Vora"/><br /><sub><b>Sagar Vora</b></sub></a><br /><a href="#content-sagarvora" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/poneciak57"><img src="https://avatars.githubusercontent.com/u/94321164?v=4?s=100" width="100px;" alt="Kacper Poneta"/><br /><sub><b>Kacper Poneta</b></sub></a><br /><a href="#content-poneciak57" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://ktheory.com/"><img src="https://avatars.githubusercontent.com/u/975?v=4?s=100" width="100px;" alt="Aaron Suggs"/><br /><sub><b>Aaron Suggs</b></sub></a><br /><a href="#content-ktheory" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/alexwh"><img src="https://avatars.githubusercontent.com/u/1723612?v=4?s=100" width="100px;" alt="Alex"/><br /><sub><b>Alex</b></sub></a><br /><a href="#content-alexwh" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/stornquist"><img src="https://avatars.githubusercontent.com/u/42915664?v=4?s=100" width="100px;" alt="Sebastian Törnquist"/><br /><sub><b>Sebastian Törnquist</b></sub></a><br /><a href="#content-stornquist" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://smlavine.com"><img src="https://avatars.githubusercontent.com/u/33563640?v=4?s=100" width="100px;" alt="Sebastian LaVine"/><br /><sub><b>Sebastian LaVine</b></sub></a><br /><a href="https://github.com/rust-lang/rustlings/commits?author=smlavine" title="Code">💻</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="http://www.alangerber.us"><img src="https://avatars.githubusercontent.com/u/201313?v=4?s=100" width="100px;" alt="Alan Gerber"/><br /><sub><b>Alan Gerber</b></sub></a><br /><a href="#content-akgerber" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="http://esotuvaka.github.io"><img src="https://avatars.githubusercontent.com/u/104941850?v=4?s=100" width="100px;" alt="Eric"/><br /><sub><b>Eric</b></sub></a><br /><a href="#content-esotuvaka" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/az0977776"><img src="https://avatars.githubusercontent.com/u/9172038?v=4?s=100" width="100px;" alt="Aaron Wang"/><br /><sub><b>Aaron Wang</b></sub></a><br /><a href="#content-az0977776" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/nmay231"><img src="https://avatars.githubusercontent.com/u/35386821?v=4?s=100" width="100px;" alt="Noah"/><br /><sub><b>Noah</b></sub></a><br /><a href="#content-nmay231" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/rb5014"><img src="https://avatars.githubusercontent.com/u/105397317?v=4?s=100" width="100px;" alt="rb5014"/><br /><sub><b>rb5014</b></sub></a><br /><a href="#content-rb5014" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/deedy5"><img src="https://avatars.githubusercontent.com/u/65482418?v=4?s=100" width="100px;" alt="deedy5"/><br /><sub><b>deedy5</b></sub></a><br /><a href="#content-deedy5" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/lionel-rowe"><img src="https://avatars.githubusercontent.com/u/26078826?v=4?s=100" width="100px;" alt="lionel-rowe"/><br /><sub><b>lionel-rowe</b></sub></a><br /><a href="#content-lionel-rowe" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/Ben2917"><img src="https://avatars.githubusercontent.com/u/10279994?v=4?s=100" width="100px;" alt="Ben"/><br /><sub><b>Ben</b></sub></a><br /><a href="#content-Ben2917" title="Content">🖋</a></td>
</tr>
<tr>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/b1ue64"><img src="https://avatars.githubusercontent.com/u/77976308?v=4?s=100" width="100px;" alt="b1ue64"/><br /><sub><b>b1ue64</b></sub></a><br /><a href="#content-b1ue64" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/lazywalker"><img src="https://avatars.githubusercontent.com/u/53956?v=4?s=100" width="100px;" alt="lazywalker"/><br /><sub><b>lazywalker</b></sub></a><br /><a href="#content-lazywalker" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/proofconstruction"><img src="https://avatars.githubusercontent.com/u/74747193?v=4?s=100" width="100px;" alt="proofconstruction"/><br /><sub><b>proofconstruction</b></sub></a><br /><a href="#infra-proofconstruction" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://www.youtube.com/channel/UCQCjA6qUutAtWqkCA4Z36CQ"><img src="https://avatars.githubusercontent.com/u/16007179?v=4?s=100" width="100px;" alt="IVIURRAY"/><br /><sub><b>IVIURRAY</b></sub></a><br /><a href="#content-IVIURRAY" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://github.com/b-apperlo"><img src="https://avatars.githubusercontent.com/u/91734527?v=4?s=100" width="100px;" alt="Bert Apperlo"/><br /><sub><b>Bert Apperlo</b></sub></a><br /><a href="#content-b-apperlo" title="Content">🖋</a></td>
<td align="center" valign="top" width="12.5%"><a href="https://fwdekker.com/"><img src="https://avatars.githubusercontent.com/u/13442533?v=4?s=100" width="100px;" alt="Florine W. Dekker"/><br /><sub><b>Florine W. Dekker</b></sub></a><br /><a href="#content-FWDekker" title="Content">🖋</a></td>
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</table>
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@ -1,871 +0,0 @@
<a name="5.6.1"></a>
## 5.6.1 (2023-09-18)
#### Changed
- Converted all exercises with assertions to test mode.
#### Fixed
- `cow1`: Reverted regression introduced by calling `to_mut` where it
shouldn't have been called, and clarified comment.
- `primitive_types3`: Require at least an array of 100 elements.
- Removed hint comments when no hint exists for the exercise.
- `as_ref_mut`: Fixed a typo in a test function name.
- `enums3`: Fixed formatting with `rustfmt`.
<a name="5.6.0"></a>
## 5.6.0 (2023-09-04)
#### Added
- New exercise: `if3`, teaching the user about `if let` statements.
- `hashmaps2`: Added an extra test function to check if the amount of fruits is higher than zero.
- `enums3`: Added a test for `Message`.
- `if1`: Added a test case to check equal values.
- `if3`: Added a note specifying that there are no test changes needed.
#### Changed
- Swapped the order of threads and smart pointer exercises.
- Rewrote the CLI to use `clap` - it's matured much since we switched to `argh` :)
- `structs3`: Switched from i32 to u32.
- `move_semantics`: Switched 1-4 to tests, and rewrote them to be way simpler, while still teaching about the same
concepts.
#### Fixed
- `iterators5`:
- Removed an outdated part of the hint.
- Renamed variables to use snake_case.
- `vecs2`: Updated the hint to reference the renamed loop variable.
- `enums3`: Changed message string in test so that it gets properly tested.
- `strings2`: Corrected line number in hint, then removed it (this both happened as part of this release cycle).
- `primitive_types4`: Updated hint to the correct ending index.
- `quiz1`: Removed duplicated sentence from exercise comments.
- `errors4`: Improved comment.
- `from_into`: Fixed test values.
- `cow1`: Added `.to_mut()` to distinguish from the previous test case.
- `threads2`: Updated hint text to reference the correct book heading.
#### Housekeeping
- Cleaned up the explanation paragraphs at the start of each exercise.
- Lots of Nix housekeeping that I don't feel qualified to write about!
- Improved CI workflows, we're now testing on multiple platforms at once.
<a name="5.5.1"></a>
## 5.5.1 (2023-05-17)
#### Fixed
- Reverted `rust-project.json` path generation due to an upstream `rust-analyzer` fix.
<a name="5.5.0"></a>
## 5.5.0 (2023-05-17)
#### Added
- `strings2`: Added a reference to the book chapter for reference conversion
- `lifetimes`: Added a link to the lifetimekata project
- Added a new `tests4` exercises, which teaches about testing for panics
- Added a `!` prefix command to watch mode that runs an external command
- Added a `--success-hints` option to watch mode that shows hints on exercise success
#### Changed
- `vecs2`: Renamed iterator variable bindings for clarify
- `lifetimes`: Changed order of book references
- `hashmaps2`: Clarified instructions in the todo block
- Moved lifetime exercises before test exercises (via the recommended book ordering)
- `options2`: Improved tests for layering options
- `modules2`: Added more information to the hint
#### Fixed
- `errors2`: Corrected a comment wording
- `iterators2`: Fixed a spelling mistake in the hint text
- `variables`: Wrapped the mut keyword with backticks for readability
- `move_semantics2`: Removed references to line numbers
- `cow1`: Clarified the `owned_no_mutation` comments
- `options3`: Changed exercise to panic when no match is found
- `rustlings lsp` now generates absolute paths, which should fix VSCode `rust-analyzer` usage on Windows
#### Housekeeping
- Added a markdown linter to run on GitHub actions
- Split quick installation section into two code blocks
<a name="5.4.1"></a>
## 5.4.1 (2023-03-10)
#### Changed
- `vecs`: Added links to `iter_mut` and `map` to README.md
- `cow1`: Changed main to tests
- `iterators1`: Formatted according to rustfmt
#### Fixed
- `errors5`: Unified undisclosed type notation
- `arc1`: Improved readability by avoiding implicit dereference
- `macros4`: Prevented auto-fix by adding `#[rustfmt::skip]`
- `cli`: Actually show correct progress percentages
<a name="5.4.0"></a>
## 5.4.0 (2023-02-12)
#### Changed
- Reordered exercises
- Unwrapped `standard_library_types` into `iterators` and `smart_pointers`
- Moved smart pointer exercises behind threads
- Ordered `rc1` before `arc1`
- **intro1**: Added a note on `rustlings lsp`
- **threads1**: Panic if threads are not joined
- **cli**:
- Made progress bar update proportional to amount of files verified
- Decreased `watch` delay from 2 to 1 second
#### Fixed
- Capitalized "Rust" in exercise hints
- **enums3**: Removed superfluous tuple brackets
- **quiz2, clippy1, iterators1**: Fixed a typo
- **rc1**: Fixed a prompt error
- **cli**:
- Fixed a typo in a method name
- Specified the edition in `rustc` commands
#### Housekeeping
- Bumped min Rust version to 1.58 in installation script
<a name="5.3.0"></a>
## 5.3.0 (2022-12-23)
#### Added
- **cli**: Added a percentage display in watch mode
- Added a `flake.nix` for Nix users
#### Changed
- **structs3**: Added an additional test
- **macros**: Added a link to MacroKata in the README
#### Fixed
- **strings3**: Added a link to `std` in the hint
- **threads1**: Corrected a hint link
- **iterators1**: Clarified hint steps
- **errors5**: Fix a typo in the hint
- **options1**: Clarified on the usage of the 24-hour system
- **threads2, threads3**: Explicitly use `Arc::clone`
- **structs3**: Clarifed the hint
- **quiz2, as_ref_mut, options1, traits1, traits2**: Clarified hints
- **traits1, traits2, cli**: Tidied up unmatching backticks
- **enums2**: Removed unneccessary indirection of self
- **enums3**: Added an extra tuple comment
#### Housekeeping
- Added a VSCode extension recommendation
- Applied some Clippy and rustfmt formatting
- Added a note on Windows PowerShell and other shell compatibility
<a name="5.2.1"></a>
## 5.2.1 (2022-09-06)
#### Fixed
- **quiz1**: Reworded the comment to actually reflect what's going on in the tests.
Also added another assert just to make sure.
- **rc1**: Fixed a typo in the hint.
- **lifetimes**: Add quotes to the `println!` output, for readability.
#### Housekeeping
- Fixed a typo in README.md
<a name="5.2.0"></a>
## 5.2.0 (2022-08-27)
#### Added
- Added a `reset` command
#### Changed
- **options2**: Convert the exercise to use tests
#### Fixed
- **threads3**: Fixed a typo
- **quiz1**: Adjusted the explanations to be consistent with
the tests
<a name="5.1.1"></a>
## 5.1.1 (2022-08-17)
#### Bug Fixes
- Fixed an incorrect assertion in options1
<a name="5.1.0"></a>
## 5.1.0 (2022-08-16)
#### Features
- Added a new `rc1` exercise.
- Added a new `cow1` exercise.
#### Bug Fixes
- **variables5**: Corrected reference to previous exercise
- **functions4**: Fixed line number reference
- **strings3**: Clarified comment wording
- **traits4, traits5**: Fixed line number reference
- **traits5**:
- Fixed typo in "parameter"
- Made exercise prefer a traits-based solution
- **lifetimes2**: Improved hint
- **threads3**: Fixed typo in hint
- **box1**: Replaced `unimplemented!` with `todo!`
- **errors5**: Provided an explanation for usage of `Box<dyn Error>`
- **quiz2**: Fixed a typo
- **macros**: Updated the macros book link
- **options1**:
- Removed unused code
- Added more granular tests
- Fixed some comment syntax shenanigans in info.toml
#### Housekeeping
- Fixed a typo in .editorconfig
- Fixed a typo in integration_tests.rs
- Clarified manual installation instructions using `cargo install --path .`
- Added a link to our Zulip in the readme file
<a name="5.0.0"></a>
## 5.0.0 (2022-07-16)
#### Features
- Hint comments in exercises now also include a reference to the
`hint` watch mode subcommand.
- **intro1**: Added more hints to point the user to the source file.
- **variables**: Switched variables3 and variables4.
- Moved `vec` and `primitive_types` exercises before `move_semantics`.
- Renamed `vec` to `vecs` to be more in line with the naming in general.
- Split up the `collections` exercises in their own folders.
- **vec2**: Added a second part of the function that provides an alternative,
immutable way of modifying vec values.
- **enums3**: Added a hint.
- Moved `strings` before `modules`.
- Added a `strings3` exercise to teach modifying strings.
- Added a `hashmaps3` exercise for some advanced usage of hashmaps.
- Moved the original `quiz2` to be `strings4`, since it only tested strings
anyways.
- Reworked `quiz2` into a new exercise that tests more chapters.
- Renamed `option` to `options`.
- **options1**: Rewrote parts of the exercise to remove the weird array
iteration stuff.
- Moved `generics3` to be `quiz3`.
- Moved box/arc exercises behind `iterators`.
- **iterators4**: Added a test for factorials of zero.
- Split `threads1` between two exercises, the first one focusing more on
`JoinHandle`s.
- Added a `threads3` exercises that uses `std::sync::mpsc`.
- Added a `clippy3` exercises with some more interesting checks.
- **as_ref_mut**: Added a section that actually tests `AsMut`.
- Added 3 new lifetimes exercises.
- Added 3 new traits exercises.
#### Bug Fixes
- **variables2**: Made output messages more verbose.
- **variables5**: Added a nudging hint about shadowing.
- **variables6**: Fixed link to book.
- **functions**: Clarified the README wording. Generally cleaned up
some hints and added some extra comments.
- **if2**: Renamed function name to `foo_if_fizz`.
- **move_semantics**: Clarified some hints.
- **quiz1**: Renamed the function name to be more verbose.
- **structs1**: Use an integer type instead of strings. Renamed "unit structs"
to "unit-like structs", as is used in the book.
- **structs3**: Added the `panic!` statement in from the beginning.
- **errors1**: Use `is_empty()` instead of `len() > 0`
- **errors3**: Improved the hint.
- **errors5**: Improved exercise instructions and the hint.
- **errors6**: Provided the skeleton of one of the functions that's supposed
to be implemented.
- **iterators3**: Inserted `todo!` into `divide()` to keep a compiler error
from happening.
- **from_str**: Added a hint comment about string error message conversion with
`Box<dyn Error>`.
- **try_from_into**: Fixed the function name in comment.
#### Removed
- Removed the legacy LSP feature that was using `mod.rs` files.
- Removed `quiz4`.
- Removed `advanced_errs`. These were the last exercises in the recommended
order, and I've always felt like they didn't quite fit in with the mostly
simple, book-following style we've had in Rustlings.
#### Housekeeping
- Added missing exercises to the book index.
- Updated spacing in Cargo.toml.
- Added a GitHub actions config so that tests run on every PR/commit.
<a name="4.8.0"></a>
## 4.8.0 (2022-07-01)
#### Features
- Added a progress indicator for `rustlings watch`.
- The installation script now checks for Rustup being installed.
- Added a `rustlings lsp` command to enable `rust-analyzer`.
#### Bug Fixes
- **move_semantics5**: Replaced "in vogue" with "in scope" in hint.
- **if2**: Fixed a typo in the hint.
- **variables1**: Fixed an incorrect line reference in the hint.
- Fixed an out of bounds check in the installation Bash script.
#### Housekeeping
- Replaced the git.io URL with the fully qualified URL because of git.io's sunsetting.
- Removed the deprecated Rust GitPod extension.
<a name="4.7.1"></a>
## 4.7.1 (2022-04-20)
#### Features
- The amount of dependency crates that need to be compiled went down from ~65 to
~45 by bumping dependency versions.
- The minimum Rust version in the install scripts has been bumped to 1.56.0 (this isn't in
the release itself, since install scripts don't really get versioned)
#### Bug Fixes
- **arc1**: A small part has been rewritten using a more functional code style (#968).
- **using_as**: A small part has been refactored to use `sum` instead of `fold`, resulting
in better readability.
#### Housekeeping
- The changelog will now be manually written instead of being automatically generated by the
Git log.
<a name="4.7.0"></a>
## 4.7.0 (2022-04-14)
#### Features
- Add move_semantics6.rs exercise (#908) ([3f0e1303](https://github.com/rust-lang/rustlings/commit/3f0e1303e0b3bf3fecc0baced3c8b8a37f83c184))
- **intro:** Add intro section. ([21c9f441](https://github.com/rust-lang/rustlings/commit/21c9f44168394e08338fd470b5f49b1fd235986f))
- Include exercises folder in the project structure behind a feature, enabling rust-analyzer to work (#917) ([179a75a6](https://github.com/rust-lang/rustlings/commit/179a75a68d03ac9518dec2297fb17f91a4fc506b))
#### Bug Fixes
- Fix a few spelling mistakes ([1c0fe3cb](https://github.com/rust-lang/rustlings/commit/1c0fe3cbcca85f90b3985985b8e265ee872a2ab2))
- **cli:**
- Move long text strings into constants. ([f78c4802](https://github.com/rust-lang/rustlings/commit/f78c48020830d7900dd8d81f355606581670446d))
- Replace `filter_map()` with `find_map()` ([9b27e8d](https://github.com/rust-lang/rustlings/commit/9b27e8d993ca20232fe38a412750c3f845a83b65))
- **clippy1:**
- Set clippy::float_cmp lint to deny (#907) ([71a06044](https://github.com/rust-lang/rustlings/commit/71a06044e6a96ff756dc31d7b0ed665ae4badb57))
- Updated code to test correctness clippy lint with approx_constant lint rule ([f2650de3](https://github.com/rust-lang/rustlings/commit/f2650de369810867d2763e935ac0963c32ec420e))
- **errors1:**
- Add a comment to make the purpose more clear (#486) ([cbcde345](https://github.com/rust-lang/rustlings/commit/cbcde345409c3e550112e449242848eaa3391bb6))
- Don't modify tests (#958) ([60bb7cc](https://github.com/rust-lang/rustlings/commit/60bb7cc3931d21d3986ad52b2b302e632a93831c))
- **errors6:** Remove existing answer code ([43d0623](https://github.com/rust-lang/rustlings/commit/43d0623086edbc46fe896ba59c7afa22c3da9f7a))
- **functions5:** Remove wrong new line and small English improvements (#885) ([8ef4869b](https://github.com/rust-lang/rustlings/commit/8ef4869b264094e5a9b50452b4534823a9df19c3))
- **install:** protect path with whitespaces using quotes and stop at the first error ([d114847f](https://github.com/rust-lang/rustlings/commit/d114847f256c5f571c0b4c87e04b04bce3435509))
- **intro1:** Add compiler error explanation. ([9b8de655](https://github.com/rust-lang/rustlings/commit/9b8de65525a5576b78cf0c8e4098cdd34296338f))
- **iterators1:** reorder TODO steps ([0bd7a063](https://github.com/rust-lang/rustlings/commit/0bd7a0631a17a9d69af5746795a30efc9cf64e6e))
- **move_semantics2:** Add comment ([89650f80](https://github.com/rust-lang/rustlings/commit/89650f808af23a32c9a2c6d46592b77547a6a464))
- **move_semantics5:** correct typo (#857) ([46c28d5c](https://github.com/rust-lang/rustlings/commit/46c28d5cef3d8446b5a356b19d8dbc725f91a3a0))
- **quiz1:** update to say quiz covers "If" ([1622e8c1](https://github.com/rust-lang/rustlings/commit/1622e8c198d89739765c915203efff0091bdeb78))
- **structs3:**
- Add a hint for panic (#608) ([4f7ff5d9](https://github.com/rust-lang/rustlings/commit/4f7ff5d9c7b2d8b045194c1a9469d37e30257c4a))
- remove redundant 'return' (#852) ([bf33829d](https://github.com/rust-lang/rustlings/commit/bf33829da240375d086f96267fc2e02fa6b07001))
- Assigned value to `cents_per_gram` in test ([d1ee2da](https://github.com/rust-lang/rustlings/commit/d1ee2daf14f19105e6db3f9c610f44293d688532))
- **structs3.rs:** assigned value to cents_per_gram in test ([d1ee2daf](https://github.com/rust-lang/rustlings/commit/d1ee2daf14f19105e6db3f9c610f44293d688532))
- **traits1:** rename test functions to snake case (#854) ([1663a16e](https://github.com/rust-lang/rustlings/commit/1663a16eade6ca646b6ed061735f7982434d530d))
#### Documentation improvements
- Add hints on how to get GCC installed (#741) ([bc56861](https://github.com/rust-lang/rustlings/commit/bc5686174463ad6f4f6b824b0e9b97c3039d4886))
- Fix some code blocks that were not highlighted ([17f9d74](https://github.com/rust-lang/rustlings/commit/17f9d7429ccd133a72e815fb5618e0ce79560929))
<a name="4.6.0"></a>
## 4.6.0 (2021-09-25)
#### Features
- add advanced_errs2 ([abd6b70c](https://github.com/rust-lang/rustlings/commit/abd6b70c72dc6426752ff41f09160b839e5c449e))
- add advanced_errs1 ([882d535b](https://github.com/rust-lang/rustlings/commit/882d535ba8628d5e0b37e8664b3e2f26260b2671))
- Add a farewell message when quitting `watch` ([1caef0b4](https://github.com/rust-lang/rustlings/commit/1caef0b43494c8b8cdd6c9260147e70d510f1aca))
- add more watch commands ([a7dc080b](https://github.com/rust-lang/rustlings/commit/a7dc080b95e49146fbaafe6922a6de2f8cb1582a), closes [#842](https://github.com/rust-lang/rustlings/issues/842))
- **modules:** update exercises, add modules3 (#822) ([dfd2fab4](https://github.com/rust-lang/rustlings/commit/dfd2fab4f33d1bf59e2e5ee03123c0c9a67a9481))
- **quiz1:** add default function name in comment (#838) ([0a11bad7](https://github.com/rust-lang/rustlings/commit/0a11bad71402b5403143d642f439f57931278c07))
#### Bug Fixes
- Correct small typo in exercises/conversions/from_str.rs ([86cc8529](https://github.com/rust-lang/rustlings/commit/86cc85295ae36948963ae52882e285d7e3e29323))
- **cli:** typo in exercise.rs (#848) ([06d5c097](https://github.com/rust-lang/rustlings/commit/06d5c0973a3dffa3c6c6f70acb775d4c6630323c))
- **from_str, try_from_into:** custom error types ([2dc93cad](https://github.com/rust-lang/rustlings/commit/2dc93caddad43821743e4903d89b355df58d7a49))
- **modules2:** fix typo (#835) ([1c3beb0a](https://github.com/rust-lang/rustlings/commit/1c3beb0a59178c950dc05fe8ee2346b017429ae0))
- **move_semantics5:**
- change &mut \*y to &mut x (#814) ([d75759e8](https://github.com/rust-lang/rustlings/commit/d75759e829fdcd64ef071cf4b6eae2a011a7718b))
- Clarify instructions ([df25684c](https://github.com/rust-lang/rustlings/commit/df25684cb79f8413915e00b5efef29369849cef1))
- **quiz1:** Fix inconsistent wording (#826) ([03131a3d](https://github.com/rust-lang/rustlings/commit/03131a3d35d9842598150f9da817f7cc26e2669a))
<a name="4.5.0"></a>
## 4.5.0 (2021-07-07)
#### Features
- Add move_semantics5 exercise. (#746) ([399ab328](https://github.com/rust-lang/rustlings/commit/399ab328d8d407265c09563aa4ef4534b2503ff2))
- **cli:** Add "next" to run the next unsolved exercise. (#785) ([d20e413a](https://github.com/rust-lang/rustlings/commit/d20e413a68772cd493561f2651cf244e822b7ca5))
#### Bug Fixes
- rename result1 to errors4 ([50ab289d](https://github.com/rust-lang/rustlings/commit/50ab289da6b9eb19a7486c341b00048c516b88c0))
- move_semantics5 hints ([1b858285](https://github.com/rust-lang/rustlings/commit/1b85828548f46f58b622b5e0c00f8c989f928807))
- remove trailing whitespaces from iterators1 ([4d4fa774](https://github.com/rust-lang/rustlings/commit/4d4fa77459392acd3581c6068aa8be9a02de12fc))
- add hints to generics1 and generics2 exercises ([31457940](https://github.com/rust-lang/rustlings/commit/31457940846b3844d78d4a4d2b074bc8d6aaf1eb))
- remove trailing whitespace ([d9b69bd1](https://github.com/rust-lang/rustlings/commit/d9b69bd1a0a7a99f2c0d80933ad2eea44c8c71b2))
- **installation:** first PowerShell command ([aa9a943d](https://github.com/rust-lang/rustlings/commit/aa9a943ddf3ae260782e73c26bcc9db60e5894b6))
- **iterators5:** derive Clone, Copy ([91fc9e31](https://github.com/rust-lang/rustlings/commit/91fc9e3118f4af603c9911698cc2a234725cb032))
- **quiz1:** Updated question description (#794) ([d8766496](https://github.com/rust-lang/rustlings/commit/d876649616cc8a8dd5f539f8bc1a5434b960b1e9))
- **try_from_into, from_str:** hints for dyn Error ([11d2cf0d](https://github.com/rust-lang/rustlings/commit/11d2cf0d604dee3f5023c17802d69438e69fa50e))
- **variables5:** confine the answer further ([48ffcbd2](https://github.com/rust-lang/rustlings/commit/48ffcbd2c4cc4d936c2c7480019190f179813cc5))
<a name="4.4.0"></a>
## 4.4.0 (2021-04-24)
#### Bug Fixes
- Fix spelling error in main.rs ([91ee27f2](https://github.com/rust-lang/rustlings/commit/91ee27f22bd3797a9db57e5fd430801c170c5db8))
- typo in default out text ([644c49f1](https://github.com/rust-lang/rustlings/commit/644c49f1e04cbb24e95872b3a52b07d692ae3bc8))
- **collections:** Naming exercises for vectors and hashmap ([bef39b12](https://github.com/rust-lang/rustlings/commit/bef39b125961310b34b34871e480a82e82af4678))
- **from_str:**
- Correct typos ([5f7c89f8](https://github.com/rust-lang/rustlings/commit/5f7c89f85db1f33da01911eaa479c3a2d4721678))
- test for error instead of unwrap/should_panic ([15e71535](https://github.com/rust-lang/rustlings/commit/15e71535f37cfaed36e22eb778728d186e2104ab))
- use trait objects for from_str ([c3e7b831](https://github.com/rust-lang/rustlings/commit/c3e7b831786c9172ed8bd5d150f3c432f242fba9))
- **functions3:** improve function argument type (#687) ([a6509cc4](https://github.com/rust-lang/rustlings/commit/a6509cc4d545d8825f01ddf7ee37823b372154dd))
- **hashmap2:** Update incorrect assertion (#660) ([72aaa15e](https://github.com/rust-lang/rustlings/commit/72aaa15e6ab4b72b3422f1c6356396e20a2a2bb8))
- **info:** Fix typo (#635) ([cddc1e86](https://github.com/rust-lang/rustlings/commit/cddc1e86e7ec744ee644cc774a4887b1a0ded3e8))
- **iterators2:** Moved errors out of tests. ([baf4ba17](https://github.com/rust-lang/rustlings/commit/baf4ba175ba6eb92989e3dd54ecbec4bedc9a863), closes [#359](https://github.com/rust-lang/rustlings/issues/359))
- **iterators3:** Enabled iterators3.rs to run without commented out tests. ([c6712dfc](https://github.com/rust-lang/rustlings/commit/c6712dfccd1a093e590ad22bbc4f49edc417dac0))
- **main:** Let find_exercise work with borrows ([347f30bd](https://github.com/rust-lang/rustlings/commit/347f30bd867343c5ace1097e085a1f7e356553f7))
- **move_semantics4:**
- Remove redundant "instead" (#640) ([cc266d7d](https://github.com/rust-lang/rustlings/commit/cc266d7d80b91e79df3f61984f231b7f1587218e))
- Small readbility improvement (#617) ([10965920](https://github.com/rust-lang/rustlings/commit/10965920fbdf8a1efc85bed869e55a1787006404))
- **option2:** Rename uninformative variables (#675) ([b4de6594](https://github.com/rust-lang/rustlings/commit/b4de6594380636817d13c2677ec6f472a964cf43))
- **quiz3:** Force an answer to Q2 (#672) ([0d894e6f](https://github.com/rust-lang/rustlings/commit/0d894e6ff739943901e1ae8c904582e5c2f843bd))
- **structs:** Add 5.3 to structs/README (#652) ([6bd791f2](https://github.com/rust-lang/rustlings/commit/6bd791f2f44aa7f0ad926df767f6b1fa8f12a9a9))
- **structs2:** correct grammar in hint (#663) ([ebdb66c7](https://github.com/rust-lang/rustlings/commit/ebdb66c7bfb6d687a14cc511a559a222e6fc5de4))
- **structs3:**
- reword heading comment (#664) ([9f3e8c2d](https://github.com/rust-lang/rustlings/commit/9f3e8c2dde645e5264c2d2200e68842b5f47bfa3))
- add check to prevent naive implementation of is_international ([05a753fe](https://github.com/rust-lang/rustlings/commit/05a753fe6333d36dbee5f68c21dec04eacdc75df))
- **threads1:** line number correction ([7857b0a6](https://github.com/rust-lang/rustlings/commit/7857b0a689b0847f48d8c14cbd1865e3b812d5ca))
- **try_from_into:** use trait objects ([2e93a588](https://github.com/rust-lang/rustlings/commit/2e93a588e0abe8badb7eafafb9e7d073c2be5df8))
#### Features
- Replace clap with argh ([7928122f](https://github.com/rust-lang/rustlings/commit/7928122fcef9ca7834d988b1ec8ca0687478beeb))
- Replace emojis when NO_EMOJI env variable present ([8d62a996](https://github.com/rust-lang/rustlings/commit/8d62a9963708dbecd9312e8bcc4b47049c72d155))
- Added iterators5.rs exercise. ([b29ea17e](https://github.com/rust-lang/rustlings/commit/b29ea17ea94d1862114af2cf5ced0e09c197dc35))
- **arc1:** Add more details to description and hint (#710) ([81be4044](https://github.com/rust-lang/rustlings/commit/81be40448777fa338ebced3b0bfc1b32d6370313))
- **cli:** Improve the list command with options, and then some ([8bbe4ff1](https://github.com/rust-lang/rustlings/commit/8bbe4ff1385c5c169c90cd3ff9253f9a91daaf8e))
- **list:**
- updated progress percentage ([1c6f7e4b](https://github.com/rust-lang/rustlings/commit/1c6f7e4b7b9b3bd36f4da2bb2b69c549cc8bd913))
- added progress info ([c0e3daac](https://github.com/rust-lang/rustlings/commit/c0e3daacaf6850811df5bc57fa43e0f249d5cfa4))
<a name="4.3.0"></a>
## 4.3.0 (2020-12-29)
#### Features
- Rewrite default out text ([44d39112](https://github.com/rust-lang/rustlings/commit/44d39112ff122b29c9793fe52e605df1612c6490))
- match exercise order to book chapters (#541) ([033bf119](https://github.com/rust-lang/rustlings/commit/033bf1198fc8bfce1b570e49da7cde010aa552e3))
- Crab? (#586) ([fa9f522b](https://github.com/rust-lang/rustlings/commit/fa9f522b7f043d7ef73a39f003a9272dfe72c4f4))
- add "rustlings list" command ([838f9f30](https://github.com/rust-lang/rustlings/commit/838f9f30083d0b23fd67503dcf0fbeca498e6647))
- **try_from_into:** remove duplicate annotation ([04f1d079](https://github.com/rust-lang/rustlings/commit/04f1d079aa42a2f49af694bc92c67d731d31a53f))
#### Bug Fixes
- update structs README ([bcf14cf6](https://github.com/rust-lang/rustlings/commit/bcf14cf677adb3a38a3ac3ca53f3c69f61153025))
- added missing exercises to info.toml ([90cfb6ff](https://github.com/rust-lang/rustlings/commit/90cfb6ff28377531bfc34acb70547bdb13374f6b))
- gives a bit more context to magic number ([30644c9a](https://github.com/rust-lang/rustlings/commit/30644c9a062b825c0ea89435dc59f0cad86b110e))
- **functions2:** Change signature to trigger precise error message: (#605) ([0ef95947](https://github.com/rust-lang/rustlings/commit/0ef95947cc30482e63a7045be6cc2fb6f6dcb4cc))
- **structs1:** Adjust wording (#573) ([9334783d](https://github.com/rust-lang/rustlings/commit/9334783da31d821cc59174fbe8320df95828926c))
- **try_from_into:**
- type error ([4f4cfcf3](https://github.com/rust-lang/rustlings/commit/4f4cfcf3c36c8718c7c170c9c3a6935e6ef0618c))
- Update description (#584) ([96347df9](https://github.com/rust-lang/rustlings/commit/96347df9df294f01153b29d9ad4ba361f665c755))
- **vec1:** Have test compare every element in a and v ([9b6c6293](https://github.com/rust-lang/rustlings/commit/9b6c629397b24b944f484f5b2bbd8144266b5695))
<a name="4.2.0"></a>
## 4.2.0 (2020-11-07)
#### Features
- Add HashMap exercises ([633c00cf](https://github.com/rust-lang/rustlings/commit/633c00cf8071e1e82959a3010452a32f34f29fc9))
- Add Vec exercises ([0c12fa31](https://github.com/rust-lang/rustlings/commit/0c12fa31c57c03c6287458a0a8aca7afd057baf6))
- **primitive_types6:** Add a test (#548) ([2b1fb2b7](https://github.com/rust-lang/rustlings/commit/2b1fb2b739bf9ad8d6b7b12af25fee173011bfc4))
- **try_from_into:** Add tests (#571) ([95ccd926](https://github.com/rust-lang/rustlings/commit/95ccd92616ae79ba287cce221101e0bbe4f68cdc))
#### Bug Fixes
- log error output when inotify limit is exceeded ([d61b4e5a](https://github.com/rust-lang/rustlings/commit/d61b4e5a13b44d72d004082f523fa1b6b24c1aca))
- more unique temp_file ([5643ef05](https://github.com/rust-lang/rustlings/commit/5643ef05bc81e4a840e9456f4406a769abbe1392))
- **installation:** Update the MinRustVersion ([21bfb2d4](https://github.com/rust-lang/rustlings/commit/21bfb2d4777429c87d8d3b5fbf0ce66006dcd034))
- **iterators2:** Update description (#578) ([197d3a3d](https://github.com/rust-lang/rustlings/commit/197d3a3d8961b2465579218a6749b2b2cefa8ddd))
- **primitive_types6:**
- remove 'unused doc comment' warning ([472d8592](https://github.com/rust-lang/rustlings/commit/472d8592d65c8275332a20dfc269e7ac0d41bc88))
- missing comma in test ([4fb230da](https://github.com/rust-lang/rustlings/commit/4fb230daf1251444fcf29e085cee222a91f8a37e))
- **quiz3:** Second test is for odd numbers, not even. (#553) ([18e0bfef](https://github.com/rust-lang/rustlings/commit/18e0bfef1de53071e353ba1ec5837002ff7290e6))
<a name="4.1.0"></a>
## 4.1.0 (2020-10-05)
#### Bug Fixes
- Update rustlings version in Cargo.lock ([1cc40bc9](https://github.com/rust-lang/rustlings/commit/1cc40bc9ce95c23d56f6d91fa1c4deb646231fef))
- **arc1:** index mod should equal thread count ([b4062ef6](https://github.com/rust-lang/rustlings/commit/b4062ef6993e80dac107c4093ea85166ad3ee0fa))
- **enums3:** Update Message::ChangeColor to take a tuple. (#457) ([4b6540c7](https://github.com/rust-lang/rustlings/commit/4b6540c71adabad647de8a09e57295e7c7c7d794))
- **exercises:** adding question mark to quiz2 ([101072ab](https://github.com/rust-lang/rustlings/commit/101072ab9f8c80b40b8b88cb06cbe38aca2481c5))
- **generics3:** clarify grade change ([47f7672c](https://github.com/rust-lang/rustlings/commit/47f7672c0307732056e7426e81d351f0dd7e22e5))
- **structs3:** Small adjustment of variable name ([114b54cb](https://github.com/rust-lang/rustlings/commit/114b54cbdb977234b39e5f180d937c14c78bb8b2))
- **using_as:** Add test so that proper type is returned. (#512) ([3286c5ec](https://github.com/rust-lang/rustlings/commit/3286c5ec19ea5fb7ded81d047da5f8594108a490))
#### Features
- Added iterators1.rs exercise ([9642f5a3](https://github.com/rust-lang/rustlings/commit/9642f5a3f686270a4f8f6ba969919ddbbc4f7fdd))
- Add ability to run rustlings on repl.it (#471) ([8f7b5bd0](https://github.com/rust-lang/rustlings/commit/8f7b5bd00eb83542b959830ef55192d2d76db90a))
- Add gitpod support (#473) ([4821a8be](https://github.com/rust-lang/rustlings/commit/4821a8be94af4f669042a06ab917934cfacd032f))
- Remind the user of the hint option (#425) ([816b1f5e](https://github.com/rust-lang/rustlings/commit/816b1f5e85d6cc6e72673813a85d0ada2a8f84af))
- Remind the user of the hint option (#425) ([9f61db5d](https://github.com/rust-lang/rustlings/commit/9f61db5dbe38538cf06571fcdd5f806e7901e83a))
- **cli:** Added 'cls' command to 'watch' mode (#474) ([4f2468e1](https://github.com/rust-lang/rustlings/commit/4f2468e14f574a93a2e9b688367b5752ed96ae7b))
- **try_from_into:** Add insufficient length test (#469) ([523d18b8](https://github.com/rust-lang/rustlings/commit/523d18b873a319f7c09262f44bd40e2fab1830e5))
<a name="4.0.0"></a>
## 4.0.0 (2020-07-08)
#### Breaking Changes
- Add a --nocapture option to display test harnesses' outputs ([8ad5f9bf](https://github.com/rust-lang/rustlings/commit/8ad5f9bf531a4848b1104b7b389a20171624c82f))
- Rename test to quiz, fixes #244 ([010a0456](https://github.com/rust-lang/rustlings/commit/010a04569282149cea7f7a76fc4d7f4c9f0f08dd))
#### Features
- Add traits README ([173bb141](https://github.com/rust-lang/rustlings/commit/173bb14140c5530cbdb59e53ace3991a99d804af))
- Add box1.rs exercise ([7479a473](https://github.com/rust-lang/rustlings/commit/7479a4737bdcac347322ad0883ca528c8675e720))
- Rewrite try_from_into (#393) ([763aa6e3](https://github.com/rust-lang/rustlings/commit/763aa6e378a586caae2d8d63755a85eeba227933))
- Add if2 exercise ([1da84b5f](https://github.com/rust-lang/rustlings/commit/1da84b5f7c489f65bd683c244f13c7d1ee812df0))
- Added exercise structs3.rs ([b66e2e09](https://github.com/rust-lang/rustlings/commit/b66e2e09622243e086a0f1258dd27e1a2d61c891))
- Add exercise variables6 covering const (#352) ([5999acd2](https://github.com/rust-lang/rustlings/commit/5999acd24a4f203292be36e0fd18d385887ec481))
#### Bug Fixes
- Change then to than ([ddd98ad7](https://github.com/rust-lang/rustlings/commit/ddd98ad75d3668fbb10eff74374148aa5ed2344d))
- rename quiz1 to tests1 in info (#420) ([0dd1c6ca](https://github.com/rust-lang/rustlings/commit/0dd1c6ca6b389789e0972aa955fe17aa15c95f29))
- fix quiz naming inconsistency (#421) ([5563adbb](https://github.com/rust-lang/rustlings/commit/5563adbb890587fc48fbbc9c4028642687f1e85b))
- confine the user further in variable exercises ([06ef4cc6](https://github.com/rust-lang/rustlings/commit/06ef4cc654e75d22a526812919ee49b8956280bf))
- update iterator and macro text for typos and clarity ([95900828](https://github.com/rust-lang/rustlings/commit/959008284834bece0196a01e17ac69a7e3590116))
- update generics2 closes #362 ([964c974a](https://github.com/rust-lang/rustlings/commit/964c974a0274199d755073b917c2bc5da0c9b4f1))
- confusing comment in conversions/try_from_into.rs ([c9e4f2cf](https://github.com/rust-lang/rustlings/commit/c9e4f2cfb4c48d0b7451263cfb43b9426438122d))
- **arc1:** Passively introduce attributes (#429) ([113cdae2](https://github.com/rust-lang/rustlings/commit/113cdae2d4e4c55905e8056ad326ede7fd7de356))
- **box1:** fix comment typo (#426) ([bb2ca251](https://github.com/rust-lang/rustlings/commit/bb2ca251106b27a7272d9a30872904dd1376654c))
- **errorsn:** Try harder to confine the user. (#388) ([2b20c8a0](https://github.com/rust-lang/rustlings/commit/2b20c8a0f5774d07c58d110d75879f33fc6273b5))
- **from_into.rs:** typo ([a901499e](https://github.com/rust-lang/rustlings/commit/a901499ededd3ce1995164700514fe4e9a0373ea))
- **generics2:** Guide students to the answer (#430) ([e6bd8021](https://github.com/rust-lang/rustlings/commit/e6bd8021d9a7dd06feebc30c9d5f953901d7b419))
- **installation:**
- Provide a backup git reference when tag can't be curl ([9e4fb100](https://github.com/rust-lang/rustlings/commit/9e4fb1009f1c9e3433915c03e22c2af422e5c5fe))
- Check if python is available while checking for git,rustc and cargo ([9cfb617d](https://github.com/rust-lang/rustlings/commit/9cfb617d5b0451b4b51644a1298965390cda9884))
- **option1:**
- Don't add only zeros to the numbers array ([cce6a442](https://github.com/rust-lang/rustlings/commit/cce6a4427718724a9096800754cd3abeca6a1580))
- Add cast to usize, as it is confusing in the context of an exercise about Option ([f6cffc7e](https://github.com/rust-lang/rustlings/commit/f6cffc7e487b42f15a6f958e49704c93a8d4465b))
- **option2:** Add TODO to comments (#400) ([10967bce](https://github.com/rust-lang/rustlings/commit/10967bce57682812dc0891a9f9757da1a9d87404))
- **options1:** Add hint about Array Initialization (#389) ([9f75554f](https://github.com/rust-lang/rustlings/commit/9f75554f2a30295996f03f0160b98c0458305502))
- **test2:** name of type String and &str (#394) ([d6c0a688](https://github.com/rust-lang/rustlings/commit/d6c0a688e6a96f93ad60d540d4b326f342fc0d45))
- **variables6:** minor typo (#419) ([524e17df](https://github.com/rust-lang/rustlings/commit/524e17df10db95f7b90a0f75cc8997182a8a4094))
<a name="3.0.0"></a>
## 3.0.0 (2020-04-11)
#### Breaking Changes
- make "compile" exercises print output (#278) ([3b6d5c](https://github.com/fmoko/rustlings/commit/3b6d5c3aaa27a242a832799eb66e96897d26fde3))
#### Bug Fixes
- **primitive_types:** revert primitive_types4 (#296) ([b3a3351e](https://github.com/rust-lang/rustlings/commit/b3a3351e8e6a0bdee07077d7b0382953821649ae))
- **run:** compile clippy exercise files (#295) ([3ab084a4](https://github.com/rust-lang/rustlings/commit/3ab084a421c0f140ae83bf1fc3f47b39342e7373))
- **conversions:**
- add additional test to meet exercise rules (#284) ([bc22ec3](https://github.com/fmoko/rustlings/commit/bc22ec382f843347333ef1301fc1bad773657f38))
- remove duplicate not done comment (#292) ([dab90f](https://github.com/fmoko/rustlings/commit/dab90f7b91a6000fe874e3d664f244048e5fa342))
- don't hardcode documentation version for traits (#288) ([30e6af](https://github.com/fmoko/rustlings/commit/30e6af60690c326fb5d3a9b7335f35c69c09137d))
#### Features
- add Option2 exercise (#290) ([86b5c08b](https://github.com/rust-lang/rustlings/commit/86b5c08b9bea1576127a7c5f599f5752072c087d))
- add exercise for option (#282) ([135e5d47](https://github.com/rust-lang/rustlings/commit/135e5d47a7c395aece6f6022117fb20c82f2d3d4))
- add new exercises for generics (#280) ([76be5e4e](https://github.com/rust-lang/rustlings/commit/76be5e4e991160f5fd9093f03ee2ba260e8f7229))
- **ci:** add buildkite config ([b049fa2c](https://github.com/rust-lang/rustlings/commit/b049fa2c84dba0f0c8906ac44e28fd45fba51a71))
<a name="2.2.1"></a>
### 2.2.1 (2020-02-27)
#### Bug Fixes
- Re-add cloning the repo to install scripts ([3d9b03c5](https://github.com/rust-lang/rustlings/commit/3d9b03c52b8dc51b140757f6fd25ad87b5782ef5))
#### Features
- Add clippy lints (#269) ([1e2fd9c9](https://github.com/rust-lang/rustlings/commit/1e2fd9c92f8cd6e389525ca1a999fca4c90b5921))
<a name="2.2.0"></a>
## 2.2.0 (2020-02-25)
#### Bug Fixes
- Update deps to version compatable with aarch64-pc-windows (#263) ([19a93428](https://github.com/rust-lang/rustlings/commit/19a93428b3c73d994292671f829bdc8e5b7b3401))
- **docs:**
- Added a necessary step to Windows installation process (#242) ([3906efcd](https://github.com/rust-lang/rustlings/commit/3906efcd52a004047b460ed548037093de3f523f))
- Fixed mangled sentence from book; edited for clarity (#266) ([ade52ff](https://github.com/rust-lang/rustlings/commit/ade52ffb739987287ddd5705944c8777705faed9))
- Updated iterators readme to account for iterators4 exercise (#273) ([bec8e3a](https://github.com/rust-lang/rustlings/commit/bec8e3a644cbd88db1c73ea5f1d8a364f4a34016))
- **installation:** make fatal errors more obvious (#272) ([17d0951e](https://github.com/rust-lang/rustlings/commit/17d0951e66fda8e11b204d5c4c41a0d5e22e78f7))
- **iterators2:**
- Remove reference to missing iterators2.rs (#245) ([419f7797](https://github.com/rust-lang/rustlings/commit/419f7797f294e4ce6a2b883199731b5bde77d262))
- **as_ref_mut:** Enable a test and improve per clippy's suggestion (#256) ([dfdf809](https://github.com/rust-lang/rustlings/commit/dfdf8093ebbd4145864995627b812780de52f902))
- **tests1:**
- Change test command ([fe10e06c](https://github.com/rust-lang/rustlings/commit/fe10e06c3733ddb4a21e90d09bf79bfe618e97ce)
- Correct test command in tests1.rs comment (#263) ([39fa7ae](https://github.com/rust-lang/rustlings/commit/39fa7ae8b70ad468da49b06f11b2383135a63bcf))
#### Features
- Add variables5.rs exercise (#264) ([0c73609e](https://github.com/rust-lang/rustlings/commit/0c73609e6f2311295e95d6f96f8c747cfc4cba03))
- Show a completion message when watching (#253) ([d25ee55a](https://github.com/rust-lang/rustlings/commit/d25ee55a3205882d35782e370af855051b39c58c))
- Add type conversion and parsing exercises (#249) ([0c85dc11](https://github.com/rust-lang/rustlings/commit/0c85dc1193978b5165491b99cc4922caf8d14a65))
- Created consistent money unit (#258) ([fd57f8f](https://github.com/rust-lang/rustlings/commit/fd57f8f2c1da2af8ddbebbccec214e6f40f4dbab))
- Enable test for exercise test4 (#276) ([8b971ff](https://github.com/rust-lang/rustlings/commit/8b971ffab6079a706ac925f5917f987932b55c07))
- Added traits exercises (#274 but specifically #216, which originally added
this :heart:) ([b559cdd](https://github.com/rust-lang/rustlings/commit/b559cdd73f32c0d0cfc1feda39f82b3e3583df17))
<a name="2.1.0"></a>
## 2.1.0 (2019-11-27)
#### Bug Fixes
- add line numbers in several exercises and hints ([b565c4d3](https://github.com/rust-lang/rustlings/commit/b565c4d3e74e8e110bef201a082fa1302722a7c3))
- **arc1:** Fix some words in the comment ([c42c3b21](https://github.com/rust-lang/rustlings/commit/c42c3b2101df9164c8cd7bb344def921e5ba3e61))
- **enums:** Add link to chapter on pattern syntax (#242) ([615ce327](https://github.com/rust-lang/rustlings/commit/615ce3279800c56d89f19d218ccb7ef576624feb))
- **primitive_types4:**
- update outdated hint ([4c5189df](https://github.com/rust-lang/rustlings/commit/4c5189df2bdd9a231f6b2611919ba5aa14da0d3f))
- update outdated comment ([ded2c034](https://github.com/rust-lang/rustlings/commit/ded2c034ba93fa1e3c2c2ea16b83abc1a57265e8))
- **strings2:** update line number in hint ([a09f684f](https://github.com/rust-lang/rustlings/commit/a09f684f05c58d239a6fc59ec5f81c2533e8b820))
- **variables1:** Correct wrong word in comment ([fda5a470](https://github.com/rust-lang/rustlings/commit/fda5a47069e0954f16a04e8e50945e03becb71a5))
#### Features
- **watch:** show hint while watching ([8143d57b](https://github.com/rust-lang/rustlings/commit/8143d57b4e88c51341dd4a18a14c536042cc009c))
<a name="2.0.0"></a>
## 2.0.0 (2019-11-12)
#### Bug Fixes
- **default:** Clarify the installation procedure ([c371b853](https://github.com/rust-lang/rustlings/commit/c371b853afa08947ddeebec0edd074b171eeaae0))
- **info:** Fix trailing newlines for hints ([795b6e34](https://github.com/rust-lang/rustlings/commit/795b6e348094a898e9227a14f6232f7bb94c8d31))
- **run:** make `run` never prompt ([4b265465](https://github.com/rust-lang/rustlings/commit/4b26546589f7d2b50455429482cf1f386ceae8b3))
#### Breaking Changes
- Refactor hint system ([9bdb0a12](https://github.com/rust-lang/rustlings/commit/9bdb0a12e45a8e9f9f6a4bd4a9c172c5376c7f60))
- improve `watch` execution mode ([2cdd6129](https://github.com/rust-lang/rustlings/commit/2cdd61294f0d9a53775ee24ad76435bec8a21e60))
- Index exercises by name ([627cdc07](https://github.com/rust-lang/rustlings/commit/627cdc07d07dfe6a740e885e0ddf6900e7ec336b))
- **run:** makes `run` never prompt ([4b265465](https://github.com/rust-lang/rustlings/commit/4b26546589f7d2b50455429482cf1f386ceae8b3))
#### Features
- **cli:** check for rustc before doing anything ([36a033b8](https://github.com/rust-lang/rustlings/commit/36a033b87a6549c1e5639c908bf7381c84f4f425))
- **hint:** Add test for hint ([ce9fa6eb](https://github.com/rust-lang/rustlings/commit/ce9fa6ebbfdc3e7585d488d9409797285708316f))
<a name="1.5.1"></a>
### 1.5.1 (2019-11-11)
#### Bug Fixes
- **errors3:** Update hint ([dcfb427b](https://github.com/rust-lang/rustlings/commit/dcfb427b09585f0193f0a294443fdf99f11c64cb), closes [#185](https://github.com/rust-lang/rustlings/issues/185))
- **if1:** Remove `return` reference ([ad03d180](https://github.com/rust-lang/rustlings/commit/ad03d180c9311c0093e56a3531eec1a9a70cdb45))
- **strings:** Move Strings before Structs ([6dcecb38](https://github.com/rust-lang/rustlings/commit/6dcecb38a4435593beb87c8e12d6314143631482), closes [#204](https://github.com/rust-lang/rustlings/issues/204))
- **structs1:** Remove misleading comment ([f72e5a8f](https://github.com/rust-lang/rustlings/commit/f72e5a8f05568dde04eaeac10b9a69872f21cb37))
- **threads:** Move Threads behind SLT ([fbe91a67](https://github.com/rust-lang/rustlings/commit/fbe91a67a482bfe64cbcdd58d06ba830a0f39da3), closes [#205](https://github.com/rust-lang/rustlings/issues/205))
- **watch:** clear screen before each `verify()` ([3aff590](https://github.com/rust-lang/rustlings/commit/3aff59085586c24196a547c2693adbdcf4432648))
<a name="1.5.0"></a>
## 1.5.0 (2019-11-09)
#### Bug Fixes
- **test1:** Rewrite logic ([79a56942](https://github.com/rust-lang/rustlings/commit/79a569422c8309cfc9e4aed25bf4ab3b3859996b))
- **installation:** Fix rustlings installation check ([7a252c47](https://github.com/rust-lang/rustlings/commit/7a252c475551486efb52f949b8af55803b700bc6))
- **iterators:** Rename iterator3.rs ([433d2115](https://github.com/rust-lang/rustlings/commit/433d2115bc1c04b6d34a335a18c9a8f3e2672bc6))
- **iterators2:** Remove syntax resulting in misleading error message ([4cde8664](https://github.com/rust-lang/rustlings/commit/4cde86643e12db162a66e62f23b78962986046ac))
- **option1:**
- Fix arguments passed to assert! macro (#222) ([4c2cf6da](https://github.com/rust-lang/rustlings/commit/4c2cf6da755efe02725e05ecc3a303304c10a6da))
- Fix arguments passed to assert! macro ([ead4f7af](https://github.com/rust-lang/rustlings/commit/ead4f7af9e10e53418efdde5c359159347282afd))
- Add test for prematurely passing exercise ([a750e4a1](https://github.com/rust-lang/rustlings/commit/a750e4a1a3006227292bb17d57d78ce84da6bfc6))
- **primitive_types4:** Fail on a slice covering the wrong area ([5b1e673c](https://github.com/rust-lang/rustlings/commit/5b1e673cec1658afc4ebbbc800213847804facf5))
- **readme:** http to https ([70946b85](https://github.com/rust-lang/rustlings/commit/70946b85e536e80e70ed9505cb650ca0a3a1fbb5))
- **test1:**
- Swap assertion parameter order ([4086d463](https://github.com/rust-lang/rustlings/commit/4086d463a981e81d97781851d17db2ced290f446))
- renamed function name to snake case closes #180 ([89d5186c](https://github.com/rust-lang/rustlings/commit/89d5186c0dae8135ecabf90ee8bb35949bc2d29b))
#### Features
- Add enums exercises ([dc150321](https://github.com/rust-lang/rustlings/commit/dc15032112fc485226a573a18139e5ce928b1755))
- Added exercise for struct update syntax ([1c4c8764](https://github.com/rust-lang/rustlings/commit/1c4c8764ed118740cd4cee73272ddc6cceb9d959))
- **iterators2:** adds iterators2 exercise including config ([9288fccf](https://github.com/rust-lang/rustlings/commit/9288fccf07a2c5043b76d0fd6491e4cf72d76031))
<a name="1.4.1"></a>
### 1.4.1 (2019-08-13)
#### Bug Fixes
- **iterators2:** Remove syntax resulting in misleading error message ([4cde8664](https://github.com/rust-lang/rustlings/commit/4cde86643e12db162a66e62f23b78962986046ac))
- **option1:** Add test for prematurely passing exercise ([a750e4a1](https://github.com/rust-lang/rustlings/commit/a750e4a1a3006227292bb17d57d78ce84da6bfc6))
- **test1:** Swap assertion parameter order ([4086d463](https://github.com/rust-lang/rustlings/commit/4086d463a981e81d97781851d17db2ced290f446))
<a name="1.4.0"></a>
## 1.4.0 (2019-07-13)
#### Bug Fixes
- **installation:** Fix rustlings installation check ([7a252c47](https://github.com/rust-lang/rustlings/commit/7a252c475551486efb52f949b8af55803b700bc6))
- **iterators:** Rename iterator3.rs ([433d2115](https://github.com/rust-lang/rustlings/commit/433d2115bc1c04b6d34a335a18c9a8f3e2672bc6))
- **readme:** http to https ([70946b85](https://github.com/rust-lang/rustlings/commit/70946b85e536e80e70ed9505cb650ca0a3a1fbb5))
- **test1:** renamed function name to snake case ([89d5186c](https://github.com/rust-lang/rustlings/commit/89d5186c0dae8135ecabf90ee8bb35949bc2d29b))
- **cli:** Check if changed exercise file exists before calling verify ([ba85ca3](https://github.com/rust-lang/rustlings/commit/ba85ca32c4cfc61de46851ab89f9c58a28f33c88))
- **structs1:** Fix the irrefutable let pattern warning ([cc6a141](https://github.com/rust-lang/rustlings/commit/cc6a14104d7c034eadc98297eaaa972d09c50b1f))
#### Features
- **changelog:** Use clog for changelogs ([34e31232](https://github.com/rust-lang/rustlings/commit/34e31232dfddde284a341c9609b33cd27d9d5724))
- **iterators2:** adds iterators2 exercise including config ([9288fccf](https://github.com/rust-lang/rustlings/commit/9288fccf07a2c5043b76d0fd6491e4cf72d76031))
<a name="1.3.0"></a>
### 1.3.0 (2019-06-05)
#### Features
- Adds a simple exercise for structures (#163, @briankung)
#### Bug Fixes
- Add Result type signature as it is difficult for new comers to understand Generics and Error all at once. (#157, @veggiemonk)
- Rustfmt and whitespace fixes (#161, @eddyp)
- errorsn.rs: Separate also the hints from each other to avoid accidental viewing (#162, @eddyp)
- fixed outdated links (#165, @gushroom)
- Fix broken link (#164, @HanKruiger)
- Remove highlighting and syntect (#167, @komaeda)
<a name="1.2.2"></a>
### 1.2.2 (2019-05-07)
#### Bug Fixes
- Reverted `--nocapture` flag since it was causing tests to pass unconditionally
<a name="1.2.1"></a>
### 1.2.1 (2019-04-22)
#### Bug Fixes
- Fix the `--nocapture` feature (@komaeda)
- Provide a nicer error message for when you're in the wrong directory
<a name="1.2.0"></a>
### 1.2.0 (2019-04-22)
#### Features
- Add errors to exercises that compile without user changes (@yvan-sraka)
- Use --nocapture when testing, enabling `println!` when running (@komaeda)
<a name="1.1.1"></a>
### 1.1.1 (2019-04-14)
#### Bug fixes
- Fix permissions on exercise files (@zacanger, #133)
- Make installation checks more thorough (@komaeda, 1b3469f236bc6979c27f6e1a04e4138a88e55de3)
- Fix order of true/false in tests for executables (@mgeier, #137)
- Stop run from panicking when compile fails (@cjpearce, #141)
- Fix intermittent test failure caused by race condition (@cjpearce, #140)
- Fix links by deleting book version (@diodfr, #142)
- Canonicalize paths to fix path matching (@cjpearce, #143)
<a name="1.1.0"></a>
### 1.1.0 (2019-03-20)
- errors2.rs: update link to Rust book (#124)
- Start verification at most recently modified file (#120)
- Watch for file creation events in watch mode (#117)
- Add standard library types to exercises suite (#119)
- Give a warning when Rustlings isn't run from the right directory (#123)
- Verify that rust version is recent enough to install Rustlings (#131)
<a name="1.0.1"></a>
### 1.0.1 (2019-03-06)
- Adds a way to install Rustlings in one command (`curl -L https://git.io/rustlings | bash`)
- Makes `rustlings watch` react to create file events (@shaunbennett, #117)
- Reworks the exercise management to use an external TOML file instead of just listing them in the code
<a name="1.0.0"></a>
### 1.0.0 (2019-03-06)
Initial release.

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rustlings.cool

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## Contributing to Rustlings
First off, thanks for taking the time to contribute!! ❤️
### Quick Reference
I want to...
_add an exercise! ➡️ [read this](#addex) and then [open a Pull Request](#prs)_
_update an outdated exercise! ➡️ [open a Pull Request](#prs)_
_report a bug! ➡️ [open an Issue](#issues)_
_fix a bug! ➡️ [open a Pull Request](#prs)_
_implement a new feature! ➡️ [open an Issue to discuss it first, then a Pull Request](#issues)_
<a name="#src"></a>
### Working on the source code
`rustlings` is basically a glorified `rustc` wrapper. Therefore the source code
isn't really that complicated since the bulk of the work is done by `rustc`.
`src/main.rs` contains a simple `argh` CLI that connects to most of the other source files.
<a name="addex"></a>
### Adding an exercise
The first step is to add the exercise! Name the file `exercises/yourTopic/yourTopicN.rs`, make sure to
put in some helpful links, and link to sections of the book in `exercises/yourTopic/README.md`.
Next make sure it runs with `rustlings`. The exercise metadata is stored in `info.toml`, under the `exercises` array. The order of the `exercises` array determines the order the exercises are run by `rustlings verify` and `rustlings watch`.
Add the metadata for your exercise in the correct order in the `exercises` array. If you are unsure of the correct ordering, add it at the bottom and ask in your pull request. The exercise metadata should contain the following:
```diff
...
+ [[exercises]]
+ name = "yourTopicN"
+ path = "exercises/yourTopic/yourTopicN.rs"
+ mode = "compile"
+ hint = """
+ Some kind of useful hint for your exercise."""
...
```
The `mode` attribute decides whether Rustlings will only compile your exercise, or compile and test it. If you have tests to verify in your exercise, choose `test`, otherwise `compile`. If you're working on a Clippy exercise, use `mode = "clippy"`.
That's all! Feel free to put up a pull request.
<a name="issues"></a>
### Issues
You can open an issue [here](https://github.com/rust-lang/rustlings/issues/new).
If you're reporting a bug, please include the output of the following commands:
- `rustc --version`
- `rustlings --version`
- `ls -la`
- Your OS name and version
<a name="prs"></a>
### Pull Requests
Opening a pull request is as easy as forking the repository and committing your
changes. There's a couple of things to watch out for:
#### Write correct commit messages
We follow the [Conventional Commits](https://www.conventionalcommits.org/en/v1.0.0-beta.4/)
specification.
This means that you have to format your commit messages in a specific way. Say
you're working on adding a new exercise called `foobar1.rs`. You could write
the following commit message:
```
feat: add foobar1.rs exercise
```
If you're just fixing a bug, please use the `fix` type:
```
fix(verify): make sure verify doesn't self-destruct
```
The scope within the brackets is optional, but should be any of these:
- `installation` (for the installation script)
- `cli` (for general CLI changes)
- `verify` (for the verification source file)
- `watch` (for the watch functionality source)
- `run` (for the run functionality source)
- `EXERCISENAME` (if you're changing a specific exercise, or set of exercises,
substitute them here)
When the commit also happens to close an existing issue, link it in the message
body:
```
fix: update foobar
closes #101029908
```
If you're doing simple changes, like updating a book link, use `chore`:
```
chore: update exercise1.rs book link
```
If you're updating documentation, use `docs`:
```
docs: add more information to Readme
```
If, and only if, you're absolutely sure you want to make a breaking change
(please discuss this beforehand!), add an exclamation mark to the type and
explain the breaking change in the message body:
```
fix!: completely change verification
BREAKING CHANGE: This has to be done because lorem ipsum dolor
```
#### Pull Request Workflow
Once you open a Pull Request, it may be reviewed or labeled (or both) until
the maintainers accept your change. Please be patient, it may take some time
for this to happen!

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View File

@ -1,30 +0,0 @@
[package]
name = "rustlings"
description = "Small exercises to get you used to reading and writing Rust code!"
version = "5.6.1"
authors = [
"Liv <mokou@fastmail.com>",
"Carol (Nichols || Goulding) <carol.nichols@gmail.com>",
]
edition = "2021"
[dependencies]
indicatif = "0.17.6"
console = "0.15"
notify = "4.0"
toml = "0.7.6"
regex = "1.5"
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0.81"
home = "0.5.3"
glob = "0.3.0"
clap = { version = "4.4.0", features = ["derive"] }
[[bin]]
name = "rustlings"
path = "src/main.rs"
[dev-dependencies]
assert_cmd = "2.0.12"
predicates = "3.0.3"
glob = "0.3.0"

22
LICENSE
View File

@ -1,22 +0,0 @@
The MIT License (MIT)
Copyright (c) 2016 Carol (Nichols || Goulding)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

180
README.md
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@ -1,180 +0,0 @@
<div class="oranda-hide">
# rustlings 🦀❤️
</div>
Greetings and welcome to `rustlings`. This project contains small exercises to get you used to reading and writing Rust code. This includes reading and responding to compiler messages!
_...looking for the old, web-based version of Rustlings? Try [here](https://github.com/rust-lang/rustlings/tree/rustlings-1)_
Alternatively, for a first-time Rust learner, there are several other resources:
- [The Book](https://doc.rust-lang.org/book/index.html) - The most comprehensive resource for learning Rust, but a bit theoretical sometimes. You will be using this along with Rustlings!
- [Rust By Example](https://doc.rust-lang.org/rust-by-example/index.html) - Learn Rust by solving little exercises! It's almost like `rustlings`, but online
## Getting Started
_Note: If you're on MacOS, make sure you've installed Xcode and its developer tools by typing `xcode-select --install`._
_Note: If you're on Linux, make sure you've installed gcc. Deb: `sudo apt install gcc`. Yum: `sudo yum -y install gcc`._
You will need to have Rust installed. You can get it by visiting <https://rustup.rs>. This'll also install Cargo, Rust's package/project manager.
## MacOS/Linux
Just run:
```bash
curl -L https://raw.githubusercontent.com/rust-lang/rustlings/main/install.sh | bash
```
Or if you want it to be installed to a different path:
```bash
curl -L https://raw.githubusercontent.com/rust-lang/rustlings/main/install.sh | bash -s mypath/
```
This will install Rustlings and give you access to the `rustlings` command. Run it to get started!
### Nix
Basically: Clone the repository at the latest tag, finally run `nix develop` or `nix-shell`.
```bash
# find out the latest version at https://github.com/rust-lang/rustlings/releases/latest (on edit 5.6.1)
git clone -b 5.6.1 --depth 1 https://github.com/rust-lang/rustlings
cd rustlings
# if nix version > 2.3
nix develop
# if nix version <= 2.3
nix-shell
```
## Windows
In PowerShell (Run as Administrator), set `ExecutionPolicy` to `RemoteSigned`:
```ps1
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
```
Then, you can run:
```ps1
Start-BitsTransfer -Source https://raw.githubusercontent.com/rust-lang/rustlings/main/install.ps1 -Destination $env:TMP/install_rustlings.ps1; Unblock-File $env:TMP/install_rustlings.ps1; Invoke-Expression $env:TMP/install_rustlings.ps1
```
To install Rustlings. Same as on MacOS/Linux, you will have access to the `rustlings` command after it. Keep in mind that this works best in PowerShell, and any other terminals may give you errors.
If you get a permission denied message, you might have to exclude the directory where you cloned Rustlings in your antivirus.
## Browser
[![Open in Gitpod](https://gitpod.io/button/open-in-gitpod.svg)](https://gitpod.io/#https://github.com/rust-lang/rustlings)
[![Open Rustlings On Codespaces](https://github.com/codespaces/badge.svg)](https://github.com/codespaces/new/?repo=rust-lang%2Frustlings&ref=main)
## Manually
Basically: Clone the repository at the latest tag, run `cargo install --path .`.
```bash
# find out the latest version at https://github.com/rust-lang/rustlings/releases/latest (on edit 5.6.1)
git clone -b 5.6.1 --depth 1 https://github.com/rust-lang/rustlings
cd rustlings
cargo install --force --path .
```
If there are installation errors, ensure that your toolchain is up to date. For the latest, run:
```bash
rustup update
```
Then, same as above, run `rustlings` to get started.
## Doing exercises
The exercises are sorted by topic and can be found in the subdirectory `rustlings/exercises/<topic>`. For every topic there is an additional README file with some resources to get you started on the topic. We really recommend that you have a look at them before you start.
The task is simple. Most exercises contain an error that keeps them from compiling, and it's up to you to fix it! Some exercises are also run as tests, but rustlings handles them all the same. To run the exercises in the recommended order, execute:
```bash
rustlings watch
```
This will try to verify the completion of every exercise in a predetermined order (what we think is best for newcomers). It will also rerun automatically every time you change a file in the `exercises/` directory. If you want to only run it once, you can use:
```bash
rustlings verify
```
This will do the same as watch, but it'll quit after running.
In case you want to go by your own order, or want to only verify a single exercise, you can run:
```bash
rustlings run myExercise1
```
Or simply use the following command to run the next unsolved exercise in the course:
```bash
rustlings run next
```
In case you get stuck, you can run the following command to get a hint for your
exercise:
```bash
rustlings hint myExercise1
```
You can also get the hint for the next unsolved exercise with the following command:
```bash
rustlings hint next
```
To check your progress, you can run the following command:
```bash
rustlings list
```
## Testing yourself
After every couple of sections, there will be a quiz that'll test your knowledge on a bunch of sections at once. These quizzes are found in `exercises/quizN.rs`.
## Enabling `rust-analyzer`
Run the command `rustlings lsp` which will generate a `rust-project.json` at the root of the project, this allows [rust-analyzer](https://rust-analyzer.github.io/) to parse each exercise.
## Continuing On
Once you've completed Rustlings, put your new knowledge to good use! Continue practicing your Rust skills by building your own projects, contributing to Rustlings, or finding other open-source projects to contribute to.
## Uninstalling Rustlings
If you want to remove Rustlings from your system, there are two steps. First, you'll need to remove the exercises folder that the install script created
for you:
```bash
rm -rf rustlings # or your custom folder name, if you chose and or renamed it
```
Second, run `cargo uninstall` to remove the `rustlings` binary:
```bash
cargo uninstall rustlings
```
Now you should be done!
## Contributing
See [CONTRIBUTING.md](https://github.com/rust-lang/rustlings/blob/main/CONTRIBUTING.md).
## Contributors ✨
Thanks goes to the wonderful people listed in [AUTHORS.md](https://github.com/rust-lang/rustlings/blob/main/AUTHORS.md) 🎉

245
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// ) {
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// Select new tab element
evt.currentTarget.classList.add("selected");
}
}
const allPlatforms = Array.from(document.querySelectorAll(`.arch[data-arch]`));
let hit = allPlatforms.find(
(a) => {
// Show Intel Mac downloads if no M1 Mac downloads are available
if (
a.attributes["data-arch"].value.includes(options.mac64) &&
os.includes(options.macSilicon) &&
!allPlatforms.find(p => p.attributes["data-arch"].value.includes(options.macSilicon))) {
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}
return a.attributes["data-arch"].value.includes(os);
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);
if (hit) {
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const selectEl = document.querySelector("#install-arch-select");
selectEl.value = hit.dataset.arch;
const firstContentChild = hit.querySelector(".install-content:first-of-type");
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firstContentChild.classList.remove("hidden");
if (firstTabChild) {
firstTabChild.classList.add("selected");
}
} else {
const noDetectEl = document.querySelector(".no-autodetect");
if (noDetectEl) {
const noDetectElDetails = document.querySelector(".no-autodetect-details");
if (noDetectElDetails) {
noDetectElDetails.innerHTML = `We detected you're on ${os} but there don't seem to be installers for that. `
}
noDetectEl.classList.remove("hidden");
}
}
let copyButtons = Array.from(document.querySelectorAll("[data-copy]"));
if (copyButtons.length) {
copyButtons.forEach(function (element) {
element.addEventListener("click", () => {
navigator.clipboard.writeText(element.attributes["data-copy"].value);
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item.classList.toggle("hidden");
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}
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}

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<h3>macos/linux/unix</h3>
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<pre style="background-color:#263238;">
<span style="color:#82aaff;">curl</span><span style="color:#89ddff;"> -</span><span style="color:#f78c6c;">L</span><span style="color:#82aaff;"> https://raw.githubusercontent.com/rust-lang/rustlings/main/install.sh </span><span style="color:#89ddff;">| </span><span style="color:#82aaff;">bash</span></pre>
<button class="button copy-clipboard-button primary" data-copy="curl -L https://raw.githubusercontent.com/rust-lang/rustlings/main/install.sh | bash">
<svg stroke='currentColor' fill='currentColor' stroke-width='0' viewBox='0 0 20 20' height='1em' width='1em' xmlns='http://www.w3.org/2000/svg'><path d='M8 2a1 1 0 000 2h2a1 1 0 100-2H8z'></path><path d='M3 5a2 2 0 012-2 3 3 0 003 3h2a3 3 0 003-3 2 2 0 012 2v6h-4.586l1.293-1.293a1 1 0 00-1.414-1.414l-3 3a1 1 0 000 1.414l3 3a1 1 0 001.414-1.414L10.414 13H15v3a2 2 0 01-2 2H5a2 2 0 01-2-2V5zM15 11h2a1 1 0 110 2h-2v-2z'></path></svg>
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<h3>windows</h3>
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<pre style="background-color:#263238;">
<span style="color:#82aaff;">Start-BitsTransfer</span><span style="color:#89ddff;"> -</span><span style="color:#f78c6c;">Source</span><span style="color:#82aaff;"> https://raw.githubusercontent.com/rust-lang/rustlings/main/install.ps1</span><span style="color:#89ddff;"> -</span><span style="color:#f78c6c;">Destination </span><span style="color:#89ddff;">$</span><span style="color:#eeffff;">env</span><span style="color:#82aaff;">:TMP/install_rustlings.ps1</span><span style="color:#89ddff;">; </span><span style="color:#82aaff;">Unblock-File </span><span style="color:#89ddff;">$</span><span style="color:#eeffff;">env</span><span style="color:#82aaff;">:TMP/install_rustlings.ps1</span><span style="color:#89ddff;">; </span><span style="color:#82aaff;">Invoke-Expression </span><span style="color:#89ddff;">$</span><span style="color:#eeffff;">env</span><span style="color:#82aaff;">:TMP/install_rustlings.ps1</span></pre>
<button class="button copy-clipboard-button primary" data-copy="Start-BitsTransfer -Source https://raw.githubusercontent.com/rust-lang/rustlings/main/install.ps1 -Destination $env:TMP/install_rustlings.ps1; Unblock-File $env:TMP/install_rustlings.ps1; Invoke-Expression $env:TMP/install_rustlings.ps1">
<svg stroke='currentColor' fill='currentColor' stroke-width='0' viewBox='0 0 20 20' height='1em' width='1em' xmlns='http://www.w3.org/2000/svg'><path d='M8 2a1 1 0 000 2h2a1 1 0 100-2H8z'></path><path d='M3 5a2 2 0 012-2 3 3 0 003 3h2a3 3 0 003-3 2 2 0 012 2v6h-4.586l1.293-1.293a1 1 0 00-1.414-1.414l-3 3a1 1 0 000 1.414l3 3a1 1 0 001.414-1.414L10.414 13H15v3a2 2 0 01-2 2H5a2 2 0 01-2-2V5zM15 11h2a1 1 0 110 2h-2v-2z'></path></svg>
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<h1>1.4.1</h1>
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<path stroke-linecap='round' stroke-linejoin='round' d='M6 6h.008v.008H6V6z' /></svg>
1.4.1
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Aug 13 2019 at 10:00 UTC
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<h1>1.5.0</h1>
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1.5.0
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<svg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke-width='1.5' stroke='currentColor' class='w-6 h-6'><path stroke-linecap='round' stroke-linejoin='round' d='M6.75 3v2.25M17.25 3v2.25M3 18.75V7.5a2.25 2.25 0 012.25-2.25h13.5A2.25 2.25 0 0121 7.5v11.25m-18 0A2.25 2.25 0 005.25 21h13.5A2.25 2.25 0 0021 18.75m-18 0v-7.5A2.25 2.25 0 015.25 9h13.5A2.25 2.25 0 0121 11.25v7.5' /></svg>
Nov 9 2019 at 09:53 UTC
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<div class="release-body">
<h4>Bug Fixes</h4>
<ul>
<li><strong>test1:</strong> Rewrite logic (<a href="https://github.com/rust-lang/rustlings/commit/79a569422c8309cfc9e4aed25bf4ab3b3859996b" rel="noopener noreferrer">79a56942</a>)</li>
<li><strong>installation:</strong> Fix rustlings installation check (<a href="https://github.com/rust-lang/rustlings/commit/7a252c475551486efb52f949b8af55803b700bc6" rel="noopener noreferrer">7a252c47</a>)</li>
<li><strong>iterators:</strong> Rename iterator3.rs (<a href="https://github.com/rust-lang/rustlings/commit/433d2115bc1c04b6d34a335a18c9a8f3e2672bc6" rel="noopener noreferrer">433d2115</a>)</li>
<li><strong>iterators2:</strong> Remove syntax resulting in misleading error message (<a href="https://github.com/rust-lang/rustlings/commit/4cde86643e12db162a66e62f23b78962986046ac" rel="noopener noreferrer">4cde8664</a>)</li>
<li><strong>option1:</strong>
<ul>
<li>Fix arguments passed to assert! macro (#222) (<a href="https://github.com/rust-lang/rustlings/commit/4c2cf6da755efe02725e05ecc3a303304c10a6da" rel="noopener noreferrer">4c2cf6da</a>)</li>
<li>Fix arguments passed to assert! macro (<a href="https://github.com/rust-lang/rustlings/commit/ead4f7af9e10e53418efdde5c359159347282afd" rel="noopener noreferrer">ead4f7af</a>)</li>
<li>Add test for prematurely passing exercise (<a href="https://github.com/rust-lang/rustlings/commit/a750e4a1a3006227292bb17d57d78ce84da6bfc6" rel="noopener noreferrer">a750e4a1</a>)</li>
</ul>
</li>
<li><strong>primitive_types4:</strong> Fail on a slice covering the wrong area (<a href="https://github.com/rust-lang/rustlings/commit/5b1e673cec1658afc4ebbbc800213847804facf5" rel="noopener noreferrer">5b1e673c</a>)</li>
<li><strong>readme:</strong> http to https (<a href="https://github.com/rust-lang/rustlings/commit/70946b85e536e80e70ed9505cb650ca0a3a1fbb5" rel="noopener noreferrer">70946b85</a>)</li>
<li><strong>test1:</strong>
<ul>
<li>Swap assertion parameter order (<a href="https://github.com/rust-lang/rustlings/commit/4086d463a981e81d97781851d17db2ced290f446" rel="noopener noreferrer">4086d463</a>)</li>
<li>renamed function name to snake case closes #180 (<a href="https://github.com/rust-lang/rustlings/commit/89d5186c0dae8135ecabf90ee8bb35949bc2d29b" rel="noopener noreferrer">89d5186c</a>)</li>
</ul>
</li>
</ul>
<h4>Features</h4>
<ul>
<li>Add enums exercises (<a href="https://github.com/rust-lang/rustlings/commit/dc15032112fc485226a573a18139e5ce928b1755" rel="noopener noreferrer">dc150321</a>)</li>
<li>Added exercise for struct update syntax (<a href="https://github.com/rust-lang/rustlings/commit/1c4c8764ed118740cd4cee73272ddc6cceb9d959" rel="noopener noreferrer">1c4c8764</a>)</li>
<li><strong>iterators2:</strong> adds iterators2 exercise including config (<a href="https://github.com/rust-lang/rustlings/commit/9288fccf07a2c5043b76d0fd6491e4cf72d76031" rel="noopener noreferrer">9288fccf</a>)</li>
</ul>
<p><a rel="noopener noreferrer"></a></p>
<h3>1.4.1 (2019-08-13)</h3>
<h4>Bug Fixes</h4>
<ul>
<li><strong>iterators2:</strong> Remove syntax resulting in misleading error message (<a href="https://github.com/rust-lang/rustlings/commit/4cde86643e12db162a66e62f23b78962986046ac" rel="noopener noreferrer">4cde8664</a>)</li>
<li><strong>option1:</strong> Add test for prematurely passing exercise (<a href="https://github.com/rust-lang/rustlings/commit/a750e4a1a3006227292bb17d57d78ce84da6bfc6" rel="noopener noreferrer">a750e4a1</a>)</li>
<li><strong>test1:</strong> Swap assertion parameter order (<a href="https://github.com/rust-lang/rustlings/commit/4086d463a981e81d97781851d17db2ced290f446" rel="noopener noreferrer">4086d463</a>)</li>
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1.5.1
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Nov 11 2019 at 13:03 UTC
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<h1>2.0.0</h1>
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2.0.0
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Nov 12 2019 at 11:26 UTC
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</div>
<div class="release-body">
<h4>Bug Fixes</h4>
<ul>
<li><strong>default:</strong> Clarify the installation procedure (<a href="https://github.com/rust-lang/rustlings/commit/c371b853afa08947ddeebec0edd074b171eeaae0" rel="noopener noreferrer">c371b853</a>)</li>
<li><strong>info:</strong> Fix trailing newlines for hints (<a href="https://github.com/rust-lang/rustlings/commit/795b6e348094a898e9227a14f6232f7bb94c8d31" rel="noopener noreferrer">795b6e34</a>)</li>
<li><strong>run:</strong> make <code>run</code> never prompt (<a href="https://github.com/rust-lang/rustlings/commit/4b26546589f7d2b50455429482cf1f386ceae8b3" rel="noopener noreferrer">4b265465</a>)</li>
</ul>
<h4>Breaking Changes</h4>
<ul>
<li>Refactor hint system (<a href="https://github.com/rust-lang/rustlings/commit/9bdb0a12e45a8e9f9f6a4bd4a9c172c5376c7f60" rel="noopener noreferrer">9bdb0a12</a>)</li>
<li>improve <code>watch</code> execution mode (<a href="https://github.com/rust-lang/rustlings/commit/2cdd61294f0d9a53775ee24ad76435bec8a21e60" rel="noopener noreferrer">2cdd6129</a>)</li>
<li>Index exercises by name (<a href="https://github.com/rust-lang/rustlings/commit/627cdc07d07dfe6a740e885e0ddf6900e7ec336b" rel="noopener noreferrer">627cdc07</a>)</li>
<li><strong>run:</strong> makes <code>run</code> never prompt (<a href="https://github.com/rust-lang/rustlings/commit/4b26546589f7d2b50455429482cf1f386ceae8b3" rel="noopener noreferrer">4b265465</a>)</li>
</ul>
<h4>Features</h4>
<ul>
<li><strong>cli:</strong> check for rustc before doing anything (<a href="https://github.com/rust-lang/rustlings/commit/36a033b87a6549c1e5639c908bf7381c84f4f425" rel="noopener noreferrer">36a033b8</a>)</li>
<li><strong>hint:</strong> Add test for hint (<a href="https://github.com/rust-lang/rustlings/commit/ce9fa6ebbfdc3e7585d488d9409797285708316f" rel="noopener noreferrer">ce9fa6eb</a>)</li>
</ul>
<p><a rel="noopener noreferrer"></a></p>
<h3>1.5.1 (2019-11-11)</h3>
<h4>Bug Fixes</h4>
<ul>
<li><strong>errors3:</strong> Update hint (<a href="https://github.com/rust-lang/rustlings/commit/dcfb427b09585f0193f0a294443fdf99f11c64cb" rel="noopener noreferrer">dcfb427b</a>, closes <a href="https://github.com/rust-lang/rustlings/issues/185" rel="noopener noreferrer">#185</a>)</li>
<li><strong>if1:</strong> Remove <code>return</code> reference (<a href="https://github.com/rust-lang/rustlings/commit/ad03d180c9311c0093e56a3531eec1a9a70cdb45" rel="noopener noreferrer">ad03d180</a>)</li>
<li><strong>strings:</strong> Move Strings before Structs (<a href="https://github.com/rust-lang/rustlings/commit/6dcecb38a4435593beb87c8e12d6314143631482" rel="noopener noreferrer">6dcecb38</a>, closes <a href="https://github.com/rust-lang/rustlings/issues/204" rel="noopener noreferrer">#204</a>)</li>
<li><strong>structs1:</strong> Remove misleading comment (<a href="https://github.com/rust-lang/rustlings/commit/f72e5a8f05568dde04eaeac10b9a69872f21cb37" rel="noopener noreferrer">f72e5a8f</a>)</li>
<li><strong>threads:</strong> Move Threads behind SLT (<a href="https://github.com/rust-lang/rustlings/commit/fbe91a67a482bfe64cbcdd58d06ba830a0f39da3" rel="noopener noreferrer">fbe91a67</a>, closes <a href="https://github.com/rust-lang/rustlings/issues/205" rel="noopener noreferrer">#205</a>)</li>
<li><strong>watch:</strong> clear screen before each <code>verify()</code> (<a href="https://github.com/rust-lang/rustlings/commit/3aff59085586c24196a547c2693adbdcf4432648" rel="noopener noreferrer">3aff590</a>)</li>
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2.1.0
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<svg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke-width='1.5' stroke='currentColor' class='w-6 h-6'><path stroke-linecap='round' stroke-linejoin='round' d='M6.75 3v2.25M17.25 3v2.25M3 18.75V7.5a2.25 2.25 0 012.25-2.25h13.5A2.25 2.25 0 0121 7.5v11.25m-18 0A2.25 2.25 0 005.25 21h13.5A2.25 2.25 0 0021 18.75m-18 0v-7.5A2.25 2.25 0 015.25 9h13.5A2.25 2.25 0 0121 11.25v7.5' /></svg>
Nov 27 2019 at 09:47 UTC
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<div class="release-body">
<h4>Bug Fixes</h4>
<ul>
<li>add line numbers in several exercises and hints (<a href="https://github.com/rust-lang/rustlings/commit/b565c4d3e74e8e110bef201a082fa1302722a7c3" rel="noopener noreferrer">b565c4d3</a>)</li>
<li><strong>arc1:</strong> Fix some words in the comment (<a href="https://github.com/rust-lang/rustlings/commit/c42c3b2101df9164c8cd7bb344def921e5ba3e61" rel="noopener noreferrer">c42c3b21</a>)</li>
<li><strong>enums:</strong> Add link to chapter on pattern syntax (#242) (<a href="https://github.com/rust-lang/rustlings/commit/615ce3279800c56d89f19d218ccb7ef576624feb" rel="noopener noreferrer">615ce327</a>)</li>
<li><strong>primitive_types4:</strong>
<ul>
<li>update outdated hint (<a href="https://github.com/rust-lang/rustlings/commit/4c5189df2bdd9a231f6b2611919ba5aa14da0d3f" rel="noopener noreferrer">4c5189df</a>)</li>
<li>update outdated comment (<a href="https://github.com/rust-lang/rustlings/commit/ded2c034ba93fa1e3c2c2ea16b83abc1a57265e8" rel="noopener noreferrer">ded2c034</a>)</li>
</ul>
</li>
<li><strong>strings2:</strong> update line number in hint (<a href="https://github.com/rust-lang/rustlings/commit/a09f684f05c58d239a6fc59ec5f81c2533e8b820" rel="noopener noreferrer">a09f684f</a>)</li>
<li><strong>variables1:</strong> Correct wrong word in comment (<a href="https://github.com/rust-lang/rustlings/commit/fda5a47069e0954f16a04e8e50945e03becb71a5" rel="noopener noreferrer">fda5a470</a>)</li>
</ul>
<h4>Features</h4>
<ul>
<li><strong>watch:</strong> show hint while watching (<a href="https://github.com/rust-lang/rustlings/commit/8143d57b4e88c51341dd4a18a14c536042cc009c" rel="noopener noreferrer">8143d57b</a>)</li>
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2.2.0
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Feb 25 2020 at 22:09 UTC
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<h4>Bug Fixes</h4>
<ul>
<li>Update deps to version compatable with aarch64-pc-windows (#263) (<a href="https://github.com/rust-lang/rustlings/commit/19a93428b3c73d994292671f829bdc8e5b7b3401" rel="noopener noreferrer">19a93428</a>)</li>
<li><strong>docs:</strong>
<ul>
<li>Added a necessary step to Windows installation process (#242) (<a href="https://github.com/rust-lang/rustlings/commit/3906efcd52a004047b460ed548037093de3f523f" rel="noopener noreferrer">3906efcd</a>)</li>
<li>Fixed mangled sentence from book; edited for clarity (#266) (<a href="https://github.com/rust-lang/rustlings/commit/ade52ffb739987287ddd5705944c8777705faed9" rel="noopener noreferrer">ade52ff</a>)</li>
<li>Updated iterators readme to account for iterators4 exercise (#273) (<a href="https://github.com/rust-lang/rustlings/commit/bec8e3a644cbd88db1c73ea5f1d8a364f4a34016" rel="noopener noreferrer">bec8e3a</a>)</li>
</ul>
</li>
<li><strong>installation:</strong> make fatal errors more obvious (#272) (<a href="https://github.com/rust-lang/rustlings/commit/17d0951e66fda8e11b204d5c4c41a0d5e22e78f7" rel="noopener noreferrer">17d0951e</a>)</li>
<li><strong>iterators2:</strong>
<ul>
<li>Remove reference to missing iterators2.rs (#245) (<a href="https://github.com/rust-lang/rustlings/commit/419f7797f294e4ce6a2b883199731b5bde77d262" rel="noopener noreferrer">419f7797</a>)</li>
</ul>
</li>
<li><strong>as_ref_mut:</strong> Enable a test and improve per clippy's suggestion (#256) (<a href="https://github.com/rust-lang/rustlings/commit/dfdf8093ebbd4145864995627b812780de52f902" rel="noopener noreferrer">dfdf809</a>)</li>
<li><strong>tests1:</strong>
<ul>
<li>Change test command (<a href="https://github.com/rust-lang/rustlings/commit/fe10e06c3733ddb4a21e90d09bf79bfe618e97ce" rel="noopener noreferrer">fe10e06c</a></li>
<li>Correct test command in tests1.rs comment (#263) (<a href="https://github.com/rust-lang/rustlings/commit/39fa7ae8b70ad468da49b06f11b2383135a63bcf" rel="noopener noreferrer">39fa7ae</a>)</li>
</ul>
</li>
</ul>
<h4>Features</h4>
<ul>
<li>Add variables5.rs exercise (#264) (<a href="https://github.com/rust-lang/rustlings/commit/0c73609e6f2311295e95d6f96f8c747cfc4cba03" rel="noopener noreferrer">0c73609e</a>)</li>
<li>Show a completion message when watching (#253) (<a href="https://github.com/rust-lang/rustlings/commit/d25ee55a3205882d35782e370af855051b39c58c" rel="noopener noreferrer">d25ee55a</a>)</li>
<li>Add type conversion and parsing exercises (#249) (<a href="https://github.com/rust-lang/rustlings/commit/0c85dc1193978b5165491b99cc4922caf8d14a65" rel="noopener noreferrer">0c85dc11</a>)</li>
<li>Created consistent money unit (#258) (<a href="https://github.com/rust-lang/rustlings/commit/fd57f8f2c1da2af8ddbebbccec214e6f40f4dbab" rel="noopener noreferrer">fd57f8f</a>)</li>
<li>Enable test for exercise test4 (#276) (<a href="https://github.com/rust-lang/rustlings/commit/8b971ffab6079a706ac925f5917f987932b55c07" rel="noopener noreferrer">8b971ff</a>)</li>
<li>Added traits exercises (#274 but specifically #216, which originally added
this :heart:) (<a href="https://github.com/rust-lang/rustlings/commit/b559cdd73f32c0d0cfc1feda39f82b3e3583df17" rel="noopener noreferrer">b559cdd</a>)</li>
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2.2.1
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Feb 27 2020 at 18:24 UTC
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<h1>Rustlings 3.0.0</h1>
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3.0.0
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Apr 11 2020 at 22:04 UTC
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<div class="release-body">
<h4>Breaking Changes</h4>
<ul>
<li>make "compile" exercises print output (#278) (<a href="https://github.com/fmoko/rustlings/commit/3b6d5c3aaa27a242a832799eb66e96897d26fde3" rel="noopener noreferrer">3b6d5c</a>)</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li><strong>primitive_types:</strong> revert primitive_types4 (#296) (<a href="https://github.com/rust-lang/rustlings/commit/b3a3351e8e6a0bdee07077d7b0382953821649ae" rel="noopener noreferrer">b3a3351e</a>)</li>
<li><strong>run:</strong> compile clippy exercise files (#295) (<a href="https://github.com/rust-lang/rustlings/commit/3ab084a421c0f140ae83bf1fc3f47b39342e7373" rel="noopener noreferrer">3ab084a4</a>)</li>
<li><strong>conversions:</strong>
<ul>
<li>add additional test to meet exercise rules (#284) (<a href="https://github.com/fmoko/rustlings/commit/bc22ec382f843347333ef1301fc1bad773657f38" rel="noopener noreferrer">bc22ec3</a>)</li>
<li>remove duplicate not done comment (#292) (<a href="https://github.com/fmoko/rustlings/commit/dab90f7b91a6000fe874e3d664f244048e5fa342" rel="noopener noreferrer">dab90f</a>)</li>
</ul>
</li>
<li>don't hardcode documentation version for traits (#288) (<a href="https://github.com/fmoko/rustlings/commit/30e6af60690c326fb5d3a9b7335f35c69c09137d" rel="noopener noreferrer">30e6af</a>)</li>
</ul>
<h4>Features</h4>
<ul>
<li>add Option2 exercise (#290) (<a href="https://github.com/rust-lang/rustlings/commit/86b5c08b9bea1576127a7c5f599f5752072c087d" rel="noopener noreferrer">86b5c08b</a>)</li>
<li>add exercise for option (#282) (<a href="https://github.com/rust-lang/rustlings/commit/135e5d47a7c395aece6f6022117fb20c82f2d3d4" rel="noopener noreferrer">135e5d47</a>)</li>
<li>add new exercises for generics (#280) (<a href="https://github.com/rust-lang/rustlings/commit/76be5e4e991160f5fd9093f03ee2ba260e8f7229" rel="noopener noreferrer">76be5e4e</a>)</li>
<li><strong>ci:</strong> add buildkite config (<a href="https://github.com/rust-lang/rustlings/commit/b049fa2c84dba0f0c8906ac44e28fd45fba51a71" rel="noopener noreferrer">b049fa2c</a>)</li>
</ul>
<p><a rel="noopener noreferrer"></a></p>
<h3>2.2.1 (2020-02-27)</h3>
<h4>Bug Fixes</h4>
<ul>
<li>Re-add cloning the repo to install scripts (<a href="https://github.com/rust-lang/rustlings/commit/3d9b03c52b8dc51b140757f6fd25ad87b5782ef5" rel="noopener noreferrer">3d9b03c5</a>)</li>
</ul>
<h4>Features</h4>
<ul>
<li>Add clippy lints (#269) (<a href="https://github.com/rust-lang/rustlings/commit/1e2fd9c92f8cd6e389525ca1a999fca4c90b5921" rel="noopener noreferrer">1e2fd9c9</a>)</li>
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4.0.0
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Jul 8 2020 at 09:41 UTC
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<h4>Breaking Changes</h4>
<ul>
<li>Add a --nocapture option to display test harnesses' outputs (<a href="https://github.com/rust-lang/rustlings/commit/8ad5f9bf531a4848b1104b7b389a20171624c82f" rel="noopener noreferrer">8ad5f9bf</a>)</li>
<li>Rename test to quiz, fixes #244 (<a href="https://github.com/rust-lang/rustlings/commit/010a04569282149cea7f7a76fc4d7f4c9f0f08dd" rel="noopener noreferrer">010a0456</a>)</li>
</ul>
<h4>Features</h4>
<ul>
<li>Add traits README (<a href="https://github.com/rust-lang/rustlings/commit/173bb14140c5530cbdb59e53ace3991a99d804af" rel="noopener noreferrer">173bb141</a>)</li>
<li>Add box1.rs exercise (<a href="https://github.com/rust-lang/rustlings/commit/7479a4737bdcac347322ad0883ca528c8675e720" rel="noopener noreferrer">7479a473</a>)</li>
<li>Rewrite try_from_into (#393) (<a href="https://github.com/rust-lang/rustlings/commit/763aa6e378a586caae2d8d63755a85eeba227933" rel="noopener noreferrer">763aa6e3</a>)</li>
<li>Add if2 exercise (<a href="https://github.com/rust-lang/rustlings/commit/1da84b5f7c489f65bd683c244f13c7d1ee812df0" rel="noopener noreferrer">1da84b5f</a>)</li>
<li>Added exercise structs3.rs (<a href="https://github.com/rust-lang/rustlings/commit/b66e2e09622243e086a0f1258dd27e1a2d61c891" rel="noopener noreferrer">b66e2e09</a>)</li>
<li>Add exercise variables6 covering const (#352) (<a href="https://github.com/rust-lang/rustlings/commit/5999acd24a4f203292be36e0fd18d385887ec481" rel="noopener noreferrer">5999acd2</a>)</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li>Change then to than (<a href="https://github.com/rust-lang/rustlings/commit/ddd98ad75d3668fbb10eff74374148aa5ed2344d" rel="noopener noreferrer">ddd98ad7</a>)</li>
<li>rename quiz1 to tests1 in info (#420) (<a href="https://github.com/rust-lang/rustlings/commit/0dd1c6ca6b389789e0972aa955fe17aa15c95f29" rel="noopener noreferrer">0dd1c6ca</a>)</li>
<li>fix quiz naming inconsistency (#421) (<a href="https://github.com/rust-lang/rustlings/commit/5563adbb890587fc48fbbc9c4028642687f1e85b" rel="noopener noreferrer">5563adbb</a>)</li>
<li>confine the user further in variable exercises (<a href="https://github.com/rust-lang/rustlings/commit/06ef4cc654e75d22a526812919ee49b8956280bf" rel="noopener noreferrer">06ef4cc6</a>)</li>
<li>update iterator and macro text for typos and clarity (<a href="https://github.com/rust-lang/rustlings/commit/959008284834bece0196a01e17ac69a7e3590116" rel="noopener noreferrer">95900828</a>)</li>
<li>update generics2 closes #362 (<a href="https://github.com/rust-lang/rustlings/commit/964c974a0274199d755073b917c2bc5da0c9b4f1" rel="noopener noreferrer">964c974a</a>)</li>
<li>confusing comment in conversions/try_from_into.rs (<a href="https://github.com/rust-lang/rustlings/commit/c9e4f2cfb4c48d0b7451263cfb43b9426438122d" rel="noopener noreferrer">c9e4f2cf</a>)</li>
<li><strong>arc1:</strong> Passively introduce attributes (#429) (<a href="https://github.com/rust-lang/rustlings/commit/113cdae2d4e4c55905e8056ad326ede7fd7de356" rel="noopener noreferrer">113cdae2</a>)</li>
<li><strong>box1:</strong> fix comment typo (#426) (<a href="https://github.com/rust-lang/rustlings/commit/bb2ca251106b27a7272d9a30872904dd1376654c" rel="noopener noreferrer">bb2ca251</a>)</li>
<li><strong>errorsn:</strong> Try harder to confine the user. (#388) (<a href="https://github.com/rust-lang/rustlings/commit/2b20c8a0f5774d07c58d110d75879f33fc6273b5" rel="noopener noreferrer">2b20c8a0</a>)</li>
<li><strong>from_into.rs:</strong> typo (<a href="https://github.com/rust-lang/rustlings/commit/a901499ededd3ce1995164700514fe4e9a0373ea" rel="noopener noreferrer">a901499e</a>)</li>
<li><strong>generics2:</strong> Guide students to the answer (#430) (<a href="https://github.com/rust-lang/rustlings/commit/e6bd8021d9a7dd06feebc30c9d5f953901d7b419" rel="noopener noreferrer">e6bd8021</a>)</li>
<li><strong>installation:</strong>
<ul>
<li>Provide a backup git reference when tag can't be curl (<a href="https://github.com/rust-lang/rustlings/commit/9e4fb1009f1c9e3433915c03e22c2af422e5c5fe" rel="noopener noreferrer">9e4fb100</a>)</li>
<li>Check if python is available while checking for git,rustc and cargo (<a href="https://github.com/rust-lang/rustlings/commit/9cfb617d5b0451b4b51644a1298965390cda9884" rel="noopener noreferrer">9cfb617d</a>)</li>
</ul>
</li>
<li><strong>option1:</strong>
<ul>
<li>Don't add only zeros to the numbers array (<a href="https://github.com/rust-lang/rustlings/commit/cce6a4427718724a9096800754cd3abeca6a1580" rel="noopener noreferrer">cce6a442</a>)</li>
<li>Add cast to usize, as it is confusing in the context of an exercise about Option (<a href="https://github.com/rust-lang/rustlings/commit/f6cffc7e487b42f15a6f958e49704c93a8d4465b" rel="noopener noreferrer">f6cffc7e</a>)</li>
</ul>
</li>
<li><strong>option2:</strong> Add TODO to comments (#400) (<a href="https://github.com/rust-lang/rustlings/commit/10967bce57682812dc0891a9f9757da1a9d87404" rel="noopener noreferrer">10967bce</a>)</li>
<li><strong>options1:</strong> Add hint about Array Initialization (#389) (<a href="https://github.com/rust-lang/rustlings/commit/9f75554f2a30295996f03f0160b98c0458305502" rel="noopener noreferrer">9f75554f</a>)</li>
<li><strong>test2:</strong> name of type String and &amp;str (#394) (<a href="https://github.com/rust-lang/rustlings/commit/d6c0a688e6a96f93ad60d540d4b326f342fc0d45" rel="noopener noreferrer">d6c0a688</a>)</li>
<li><strong>variables6:</strong> minor typo (#419) (<a href="https://github.com/rust-lang/rustlings/commit/524e17df10db95f7b90a0f75cc8997182a8a4094" rel="noopener noreferrer">524e17df</a>)</li>
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4.1.0
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Oct 5 2020 at 16:45 UTC
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<div class="release-body">
<h4>Bug Fixes</h4>
<ul>
<li>Update rustlings version in Cargo.lock (<a href="https://github.com/rust-lang/rustlings/commit/1cc40bc9ce95c23d56f6d91fa1c4deb646231fef" rel="noopener noreferrer">1cc40bc9</a>)</li>
<li><strong>arc1:</strong> index mod should equal thread count (<a href="https://github.com/rust-lang/rustlings/commit/b4062ef6993e80dac107c4093ea85166ad3ee0fa" rel="noopener noreferrer">b4062ef6</a>)</li>
<li><strong>enums3:</strong> Update Message::ChangeColor to take a tuple. (#457) (<a href="https://github.com/rust-lang/rustlings/commit/4b6540c71adabad647de8a09e57295e7c7c7d794" rel="noopener noreferrer">4b6540c7</a>)</li>
<li><strong>exercises:</strong> adding question mark to quiz2 (<a href="https://github.com/rust-lang/rustlings/commit/101072ab9f8c80b40b8b88cb06cbe38aca2481c5" rel="noopener noreferrer">101072ab</a>)</li>
<li><strong>generics3:</strong> clarify grade change (<a href="https://github.com/rust-lang/rustlings/commit/47f7672c0307732056e7426e81d351f0dd7e22e5" rel="noopener noreferrer">47f7672c</a>)</li>
<li><strong>structs3:</strong> Small adjustment of variable name (<a href="https://github.com/rust-lang/rustlings/commit/114b54cbdb977234b39e5f180d937c14c78bb8b2" rel="noopener noreferrer">114b54cb</a>)</li>
<li><strong>using_as:</strong> Add test so that proper type is returned. (#512) (<a href="https://github.com/rust-lang/rustlings/commit/3286c5ec19ea5fb7ded81d047da5f8594108a490" rel="noopener noreferrer">3286c5ec</a>)</li>
</ul>
<h4>Features</h4>
<ul>
<li>Added iterators1.rs exercise (<a href="https://github.com/rust-lang/rustlings/commit/9642f5a3f686270a4f8f6ba969919ddbbc4f7fdd" rel="noopener noreferrer">9642f5a3</a>)</li>
<li>Add ability to run rustlings on repl.it (#471) (<a href="https://github.com/rust-lang/rustlings/commit/8f7b5bd00eb83542b959830ef55192d2d76db90a" rel="noopener noreferrer">8f7b5bd0</a>)</li>
<li>Add gitpod support (#473) (<a href="https://github.com/rust-lang/rustlings/commit/4821a8be94af4f669042a06ab917934cfacd032f" rel="noopener noreferrer">4821a8be</a>)</li>
<li>Remind the user of the hint option (#425) (<a href="https://github.com/rust-lang/rustlings/commit/816b1f5e85d6cc6e72673813a85d0ada2a8f84af" rel="noopener noreferrer">816b1f5e</a>)</li>
<li>Remind the user of the hint option (#425) (<a href="https://github.com/rust-lang/rustlings/commit/9f61db5dbe38538cf06571fcdd5f806e7901e83a" rel="noopener noreferrer">9f61db5d</a>)</li>
<li><strong>cli:</strong> Added 'cls' command to 'watch' mode (#474) (<a href="https://github.com/rust-lang/rustlings/commit/4f2468e14f574a93a2e9b688367b5752ed96ae7b" rel="noopener noreferrer">4f2468e1</a>)</li>
<li><strong>try_from_into:</strong> Add insufficient length test (#469) (<a href="https://github.com/rust-lang/rustlings/commit/523d18b873a319f7c09262f44bd40e2fab1830e5" rel="noopener noreferrer">523d18b8</a>)</li>
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4.2.0
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Nov 7 2020 at 13:22 UTC
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<div class="release-body">
<h4>Features</h4>
<ul>
<li>Add HashMap exercises (<a href="https://github.com/rust-lang/rustlings/commit/633c00cf8071e1e82959a3010452a32f34f29fc9" rel="noopener noreferrer">633c00cf</a>)</li>
<li>Add Vec exercises (<a href="https://github.com/rust-lang/rustlings/commit/0c12fa31c57c03c6287458a0a8aca7afd057baf6" rel="noopener noreferrer">0c12fa31</a>)</li>
<li><strong>primitive_types6:</strong> Add a test (#548) (<a href="https://github.com/rust-lang/rustlings/commit/2b1fb2b739bf9ad8d6b7b12af25fee173011bfc4" rel="noopener noreferrer">2b1fb2b7</a>)</li>
<li><strong>try_from_into:</strong> Add tests (#571) (<a href="https://github.com/rust-lang/rustlings/commit/95ccd92616ae79ba287cce221101e0bbe4f68cdc" rel="noopener noreferrer">95ccd926</a>)</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li>log error output when inotify limit is exceeded (<a href="https://github.com/rust-lang/rustlings/commit/d61b4e5a13b44d72d004082f523fa1b6b24c1aca" rel="noopener noreferrer">d61b4e5a</a>)</li>
<li>more unique temp_file (<a href="https://github.com/rust-lang/rustlings/commit/5643ef05bc81e4a840e9456f4406a769abbe1392" rel="noopener noreferrer">5643ef05</a>)</li>
<li><strong>installation:</strong> Update the MinRustVersion (<a href="https://github.com/rust-lang/rustlings/commit/21bfb2d4777429c87d8d3b5fbf0ce66006dcd034" rel="noopener noreferrer">21bfb2d4</a>)</li>
<li><strong>iterators2:</strong> Update description (#578) (<a href="https://github.com/rust-lang/rustlings/commit/197d3a3d8961b2465579218a6749b2b2cefa8ddd" rel="noopener noreferrer">197d3a3d</a>)</li>
<li><strong>primitive_types6:</strong>
<ul>
<li>remove 'unused doc comment' warning (<a href="https://github.com/rust-lang/rustlings/commit/472d8592d65c8275332a20dfc269e7ac0d41bc88" rel="noopener noreferrer">472d8592</a>)</li>
<li>missing comma in test (<a href="https://github.com/rust-lang/rustlings/commit/4fb230daf1251444fcf29e085cee222a91f8a37e" rel="noopener noreferrer">4fb230da</a>)</li>
</ul>
</li>
<li><strong>quiz3:</strong> Second test is for odd numbers, not even. (#553) (<a href="https://github.com/rust-lang/rustlings/commit/18e0bfef1de53071e353ba1ec5837002ff7290e6" rel="noopener noreferrer">18e0bfef</a>)</li>
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4.3.0
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<svg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke-width='1.5' stroke='currentColor' class='w-6 h-6'><path stroke-linecap='round' stroke-linejoin='round' d='M6.75 3v2.25M17.25 3v2.25M3 18.75V7.5a2.25 2.25 0 012.25-2.25h13.5A2.25 2.25 0 0121 7.5v11.25m-18 0A2.25 2.25 0 005.25 21h13.5A2.25 2.25 0 0021 18.75m-18 0v-7.5A2.25 2.25 0 015.25 9h13.5A2.25 2.25 0 0121 11.25v7.5' /></svg>
Dec 29 2020 at 10:41 UTC
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<div class="release-body">
<h4>Features</h4>
<ul>
<li>Rewrite default out text (<a href="https://github.com/rust-lang/rustlings/commit/44d39112ff122b29c9793fe52e605df1612c6490" rel="noopener noreferrer">44d39112</a>)</li>
<li>match exercise order to book chapters (#541) (<a href="https://github.com/rust-lang/rustlings/commit/033bf1198fc8bfce1b570e49da7cde010aa552e3" rel="noopener noreferrer">033bf119</a>)</li>
<li>Crab? (#586) (<a href="https://github.com/rust-lang/rustlings/commit/fa9f522b7f043d7ef73a39f003a9272dfe72c4f4" rel="noopener noreferrer">fa9f522b</a>)</li>
<li>add "rustlings list" command (<a href="https://github.com/rust-lang/rustlings/commit/838f9f30083d0b23fd67503dcf0fbeca498e6647" rel="noopener noreferrer">838f9f30</a>)</li>
<li><strong>try_from_into:</strong> remove duplicate annotation (<a href="https://github.com/rust-lang/rustlings/commit/04f1d079aa42a2f49af694bc92c67d731d31a53f" rel="noopener noreferrer">04f1d079</a>)</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li>update structs README (<a href="https://github.com/rust-lang/rustlings/commit/bcf14cf677adb3a38a3ac3ca53f3c69f61153025" rel="noopener noreferrer">bcf14cf6</a>)</li>
<li>added missing exercises to info.toml (<a href="https://github.com/rust-lang/rustlings/commit/90cfb6ff28377531bfc34acb70547bdb13374f6b" rel="noopener noreferrer">90cfb6ff</a>)</li>
<li>gives a bit more context to magic number (<a href="https://github.com/rust-lang/rustlings/commit/30644c9a062b825c0ea89435dc59f0cad86b110e" rel="noopener noreferrer">30644c9a</a>)</li>
<li><strong>functions2:</strong> Change signature to trigger precise error message: (#605) (<a href="https://github.com/rust-lang/rustlings/commit/0ef95947cc30482e63a7045be6cc2fb6f6dcb4cc" rel="noopener noreferrer">0ef95947</a>)</li>
<li><strong>structs1:</strong> Adjust wording (#573) (<a href="https://github.com/rust-lang/rustlings/commit/9334783da31d821cc59174fbe8320df95828926c" rel="noopener noreferrer">9334783d</a>)</li>
<li><strong>try_from_into:</strong>
<ul>
<li>type error (<a href="https://github.com/rust-lang/rustlings/commit/4f4cfcf3c36c8718c7c170c9c3a6935e6ef0618c" rel="noopener noreferrer">4f4cfcf3</a>)</li>
<li>Update description (#584) (<a href="https://github.com/rust-lang/rustlings/commit/96347df9df294f01153b29d9ad4ba361f665c755" rel="noopener noreferrer">96347df9</a>)</li>
</ul>
</li>
<li><strong>vec1:</strong> Have test compare every element in a and v (<a href="https://github.com/rust-lang/rustlings/commit/9b6c629397b24b944f484f5b2bbd8144266b5695" rel="noopener noreferrer">9b6c6293</a>)</li>
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4.4.0
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<svg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke-width='1.5' stroke='currentColor' class='w-6 h-6'><path stroke-linecap='round' stroke-linejoin='round' d='M6.75 3v2.25M17.25 3v2.25M3 18.75V7.5a2.25 2.25 0 012.25-2.25h13.5A2.25 2.25 0 0121 7.5v11.25m-18 0A2.25 2.25 0 005.25 21h13.5A2.25 2.25 0 0021 18.75m-18 0v-7.5A2.25 2.25 0 015.25 9h13.5A2.25 2.25 0 0121 11.25v7.5' /></svg>
Apr 24 2021 at 10:04 UTC
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</div>
<div class="release-body">
<h4>Bug Fixes</h4>
<ul>
<li>Fix spelling error in main.rs (<a href="https://github.com/rust-lang/rustlings/commit/91ee27f22bd3797a9db57e5fd430801c170c5db8" rel="noopener noreferrer">91ee27f2</a>)</li>
<li>typo in default out text (<a href="https://github.com/rust-lang/rustlings/commit/644c49f1e04cbb24e95872b3a52b07d692ae3bc8" rel="noopener noreferrer">644c49f1</a>)</li>
<li><strong>collections:</strong> Naming exercises for vectors and hashmap (<a href="https://github.com/rust-lang/rustlings/commit/bef39b125961310b34b34871e480a82e82af4678" rel="noopener noreferrer">bef39b12</a>)</li>
<li><strong>from_str:</strong>
<ul>
<li>Correct typos (<a href="https://github.com/rust-lang/rustlings/commit/5f7c89f85db1f33da01911eaa479c3a2d4721678" rel="noopener noreferrer">5f7c89f8</a>)</li>
<li>test for error instead of unwrap/should_panic (<a href="https://github.com/rust-lang/rustlings/commit/15e71535f37cfaed36e22eb778728d186e2104ab" rel="noopener noreferrer">15e71535</a>)</li>
<li>use trait objects for from_str (<a href="https://github.com/rust-lang/rustlings/commit/c3e7b831786c9172ed8bd5d150f3c432f242fba9" rel="noopener noreferrer">c3e7b831</a>)</li>
</ul>
</li>
<li><strong>functions3:</strong> improve function argument type (#687) (<a href="https://github.com/rust-lang/rustlings/commit/a6509cc4d545d8825f01ddf7ee37823b372154dd" rel="noopener noreferrer">a6509cc4</a>)</li>
<li><strong>hashmap2:</strong> Update incorrect assertion (#660) (<a href="https://github.com/rust-lang/rustlings/commit/72aaa15e6ab4b72b3422f1c6356396e20a2a2bb8" rel="noopener noreferrer">72aaa15e</a>)</li>
<li><strong>info:</strong> Fix typo (#635) (<a href="https://github.com/rust-lang/rustlings/commit/cddc1e86e7ec744ee644cc774a4887b1a0ded3e8" rel="noopener noreferrer">cddc1e86</a>)</li>
<li><strong>iterators2:</strong> Moved errors out of tests. (<a href="https://github.com/rust-lang/rustlings/commit/baf4ba175ba6eb92989e3dd54ecbec4bedc9a863" rel="noopener noreferrer">baf4ba17</a>, closes <a href="https://github.com/rust-lang/rustlings/issues/359" rel="noopener noreferrer">#359</a>)</li>
<li><strong>iterators3:</strong> Enabled iterators3.rs to run without commented out tests. (<a href="https://github.com/rust-lang/rustlings/commit/c6712dfccd1a093e590ad22bbc4f49edc417dac0" rel="noopener noreferrer">c6712dfc</a>)</li>
<li><strong>main:</strong> Let find_exercise work with borrows (<a href="https://github.com/rust-lang/rustlings/commit/347f30bd867343c5ace1097e085a1f7e356553f7" rel="noopener noreferrer">347f30bd</a>)</li>
<li><strong>move_semantics4:</strong>
<ul>
<li>Remove redundant "instead" (#640) (<a href="https://github.com/rust-lang/rustlings/commit/cc266d7d80b91e79df3f61984f231b7f1587218e" rel="noopener noreferrer">cc266d7d</a>)</li>
<li>Small readbility improvement (#617) (<a href="https://github.com/rust-lang/rustlings/commit/10965920fbdf8a1efc85bed869e55a1787006404" rel="noopener noreferrer">10965920</a>)</li>
</ul>
</li>
<li><strong>option2:</strong> Rename uninformative variables (#675) (<a href="https://github.com/rust-lang/rustlings/commit/b4de6594380636817d13c2677ec6f472a964cf43" rel="noopener noreferrer">b4de6594</a>)</li>
<li><strong>quiz3:</strong> Force an answer to Q2 (#672) (<a href="https://github.com/rust-lang/rustlings/commit/0d894e6ff739943901e1ae8c904582e5c2f843bd" rel="noopener noreferrer">0d894e6f</a>)</li>
<li><strong>structs:</strong> Add 5.3 to structs/README (#652) (<a href="https://github.com/rust-lang/rustlings/commit/6bd791f2f44aa7f0ad926df767f6b1fa8f12a9a9" rel="noopener noreferrer">6bd791f2</a>)</li>
<li><strong>structs2:</strong> correct grammar in hint (#663) (<a href="https://github.com/rust-lang/rustlings/commit/ebdb66c7bfb6d687a14cc511a559a222e6fc5de4" rel="noopener noreferrer">ebdb66c7</a>)</li>
<li><strong>structs3:</strong>
<ul>
<li>reword heading comment (#664) (<a href="https://github.com/rust-lang/rustlings/commit/9f3e8c2dde645e5264c2d2200e68842b5f47bfa3" rel="noopener noreferrer">9f3e8c2d</a>)</li>
<li>add check to prevent naive implementation of is_international (<a href="https://github.com/rust-lang/rustlings/commit/05a753fe6333d36dbee5f68c21dec04eacdc75df" rel="noopener noreferrer">05a753fe</a>)</li>
</ul>
</li>
<li><strong>threads1:</strong> line number correction (<a href="https://github.com/rust-lang/rustlings/commit/7857b0a689b0847f48d8c14cbd1865e3b812d5ca" rel="noopener noreferrer">7857b0a6</a>)</li>
<li><strong>try_from_into:</strong> use trait objects (<a href="https://github.com/rust-lang/rustlings/commit/2e93a588e0abe8badb7eafafb9e7d073c2be5df8" rel="noopener noreferrer">2e93a588</a>)</li>
</ul>
<h4>Features</h4>
<ul>
<li>Replace clap with argh (<a href="https://github.com/rust-lang/rustlings/commit/7928122fcef9ca7834d988b1ec8ca0687478beeb" rel="noopener noreferrer">7928122f</a>)</li>
<li>Replace emojis when NO_EMOJI env variable present (<a href="https://github.com/rust-lang/rustlings/commit/8d62a9963708dbecd9312e8bcc4b47049c72d155" rel="noopener noreferrer">8d62a996</a>)</li>
<li>Added iterators5.rs exercise. (<a href="https://github.com/rust-lang/rustlings/commit/b29ea17ea94d1862114af2cf5ced0e09c197dc35" rel="noopener noreferrer">b29ea17e</a>)</li>
<li><strong>arc1:</strong> Add more details to description and hint (#710) (<a href="https://github.com/rust-lang/rustlings/commit/81be40448777fa338ebced3b0bfc1b32d6370313" rel="noopener noreferrer">81be4044</a>)</li>
<li><strong>cli:</strong> Improve the list command with options, and then some (<a href="https://github.com/rust-lang/rustlings/commit/8bbe4ff1385c5c169c90cd3ff9253f9a91daaf8e" rel="noopener noreferrer">8bbe4ff1</a>)</li>
<li><strong>list:</strong>
<ul>
<li>updated progress percentage (<a href="https://github.com/rust-lang/rustlings/commit/1c6f7e4b7b9b3bd36f4da2bb2b69c549cc8bd913" rel="noopener noreferrer">1c6f7e4b</a>)</li>
<li>added progress info (<a href="https://github.com/rust-lang/rustlings/commit/c0e3daacaf6850811df5bc57fa43e0f249d5cfa4" rel="noopener noreferrer">c0e3daac</a>)</li>
</ul>
</li>
</ul>
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4.5.0
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Jul 7 2021 at 20:30 UTC
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<div class="release-body">
<h4>Features</h4>
<ul>
<li>Add move_semantics5 exercise. (#746) (<a href="https://github.com/rust-lang/rustlings/commit/399ab328d8d407265c09563aa4ef4534b2503ff2" rel="noopener noreferrer">399ab328</a>)</li>
<li><strong>cli:</strong> Add "next" to run the next unsolved exercise. (#785) (<a href="https://github.com/rust-lang/rustlings/commit/d20e413a68772cd493561f2651cf244e822b7ca5" rel="noopener noreferrer">d20e413a</a>)</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li>rename result1 to errors4 (<a href="https://github.com/rust-lang/rustlings/commit/50ab289da6b9eb19a7486c341b00048c516b88c0" rel="noopener noreferrer">50ab289d</a>)</li>
<li>move_semantics5 hints (<a href="https://github.com/rust-lang/rustlings/commit/1b85828548f46f58b622b5e0c00f8c989f928807" rel="noopener noreferrer">1b858285</a>)</li>
<li>remove trailing whitespaces from iterators1 (<a href="https://github.com/rust-lang/rustlings/commit/4d4fa77459392acd3581c6068aa8be9a02de12fc" rel="noopener noreferrer">4d4fa774</a>)</li>
<li>add hints to generics1 and generics2 exercises (<a href="https://github.com/rust-lang/rustlings/commit/31457940846b3844d78d4a4d2b074bc8d6aaf1eb" rel="noopener noreferrer">31457940</a>)</li>
<li>remove trailing whitespace (<a href="https://github.com/rust-lang/rustlings/commit/d9b69bd1a0a7a99f2c0d80933ad2eea44c8c71b2" rel="noopener noreferrer">d9b69bd1</a>)</li>
<li><strong>installation:</strong> first PowerShell command (<a href="https://github.com/rust-lang/rustlings/commit/aa9a943ddf3ae260782e73c26bcc9db60e5894b6" rel="noopener noreferrer">aa9a943d</a>)</li>
<li><strong>iterators5:</strong> derive Clone, Copy (<a href="https://github.com/rust-lang/rustlings/commit/91fc9e3118f4af603c9911698cc2a234725cb032" rel="noopener noreferrer">91fc9e31</a>)</li>
<li><strong>quiz1:</strong> Updated question description (#794) (<a href="https://github.com/rust-lang/rustlings/commit/d876649616cc8a8dd5f539f8bc1a5434b960b1e9" rel="noopener noreferrer">d8766496</a>)</li>
<li><strong>try_from_into, from_str:</strong> hints for dyn Error (<a href="https://github.com/rust-lang/rustlings/commit/11d2cf0d604dee3f5023c17802d69438e69fa50e" rel="noopener noreferrer">11d2cf0d</a>)</li>
<li><strong>variables5:</strong> confine the answer further (<a href="https://github.com/rust-lang/rustlings/commit/48ffcbd2c4cc4d936c2c7480019190f179813cc5" rel="noopener noreferrer">48ffcbd2</a>)</li>
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4.6.0
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<svg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke-width='1.5' stroke='currentColor' class='w-6 h-6'><path stroke-linecap='round' stroke-linejoin='round' d='M6.75 3v2.25M17.25 3v2.25M3 18.75V7.5a2.25 2.25 0 012.25-2.25h13.5A2.25 2.25 0 0121 7.5v11.25m-18 0A2.25 2.25 0 005.25 21h13.5A2.25 2.25 0 0021 18.75m-18 0v-7.5A2.25 2.25 0 015.25 9h13.5A2.25 2.25 0 0121 11.25v7.5' /></svg>
Sep 25 2021 at 09:27 UTC
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<div class="release-body">
<h4>Features</h4>
<ul>
<li>add advanced_errs2 (<a href="https://github.com/rust-lang/rustlings/commit/abd6b70c72dc6426752ff41f09160b839e5c449e" rel="noopener noreferrer">abd6b70c</a>)</li>
<li>add advanced_errs1 (<a href="https://github.com/rust-lang/rustlings/commit/882d535ba8628d5e0b37e8664b3e2f26260b2671" rel="noopener noreferrer">882d535b</a>)</li>
<li>Add a farewell message when quitting <code>watch</code> (<a href="https://github.com/rust-lang/rustlings/commit/1caef0b43494c8b8cdd6c9260147e70d510f1aca" rel="noopener noreferrer">1caef0b4</a>)</li>
<li>add more watch commands (<a href="https://github.com/rust-lang/rustlings/commit/a7dc080b95e49146fbaafe6922a6de2f8cb1582a" rel="noopener noreferrer">a7dc080b</a>, closes <a href="https://github.com/rust-lang/rustlings/issues/842" rel="noopener noreferrer">#842</a>)</li>
<li><strong>modules:</strong> update exercises, add modules3 (#822) (<a href="https://github.com/rust-lang/rustlings/commit/dfd2fab4f33d1bf59e2e5ee03123c0c9a67a9481" rel="noopener noreferrer">dfd2fab4</a>)</li>
<li><strong>quiz1:</strong> add default function name in comment (#838) (<a href="https://github.com/rust-lang/rustlings/commit/0a11bad71402b5403143d642f439f57931278c07" rel="noopener noreferrer">0a11bad7</a>)</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li>Correct small typo in exercises/conversions/from_str.rs (<a href="https://github.com/rust-lang/rustlings/commit/86cc85295ae36948963ae52882e285d7e3e29323" rel="noopener noreferrer">86cc8529</a>)</li>
<li><strong>cli:</strong> typo in exercise.rs (#848) (<a href="https://github.com/rust-lang/rustlings/commit/06d5c0973a3dffa3c6c6f70acb775d4c6630323c" rel="noopener noreferrer">06d5c097</a>)</li>
<li><strong>from_str, try_from_into:</strong> custom error types (<a href="https://github.com/rust-lang/rustlings/commit/2dc93caddad43821743e4903d89b355df58d7a49" rel="noopener noreferrer">2dc93cad</a>)</li>
<li><strong>modules2:</strong> fix typo (#835) (<a href="https://github.com/rust-lang/rustlings/commit/1c3beb0a59178c950dc05fe8ee2346b017429ae0" rel="noopener noreferrer">1c3beb0a</a>)</li>
<li><strong>move_semantics5:</strong>
<ul>
<li>change &amp;mut *y to &amp;mut x (#814) (<a href="https://github.com/rust-lang/rustlings/commit/d75759e829fdcd64ef071cf4b6eae2a011a7718b" rel="noopener noreferrer">d75759e8</a>)</li>
<li>Clarify instructions (<a href="https://github.com/rust-lang/rustlings/commit/df25684cb79f8413915e00b5efef29369849cef1" rel="noopener noreferrer">df25684c</a>)</li>
</ul>
</li>
<li><strong>quiz1:</strong> Fix inconsistent wording (#826) (<a href="https://github.com/rust-lang/rustlings/commit/03131a3d35d9842598150f9da817f7cc26e2669a" rel="noopener noreferrer">03131a3d</a>)</li>
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4.7.0
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<svg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke-width='1.5' stroke='currentColor' class='w-6 h-6'><path stroke-linecap='round' stroke-linejoin='round' d='M6.75 3v2.25M17.25 3v2.25M3 18.75V7.5a2.25 2.25 0 012.25-2.25h13.5A2.25 2.25 0 0121 7.5v11.25m-18 0A2.25 2.25 0 005.25 21h13.5A2.25 2.25 0 0021 18.75m-18 0v-7.5A2.25 2.25 0 015.25 9h13.5A2.25 2.25 0 0121 11.25v7.5' /></svg>
Apr 14 2022 at 09:23 UTC
</span>
</div>
<div class="release-body">
<h4>Features</h4>
<ul>
<li>Add move_semantics6.rs exercise (#908) (<a href="https://github.com/rust-lang/rustlings/commit/3f0e1303e0b3bf3fecc0baced3c8b8a37f83c184" rel="noopener noreferrer">3f0e1303</a>)</li>
<li><strong>intro:</strong> Add intro section. (<a href="https://github.com/rust-lang/rustlings/commit/21c9f44168394e08338fd470b5f49b1fd235986f" rel="noopener noreferrer">21c9f441</a>)</li>
<li>Include exercises folder in the project structure behind a feature, enabling rust-analyzer to work (#917) (<a href="https://github.com/rust-lang/rustlings/commit/179a75a68d03ac9518dec2297fb17f91a4fc506b" rel="noopener noreferrer">179a75a6</a>)</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li>Fix a few spelling mistakes (<a href="https://github.com/rust-lang/rustlings/commit/1c0fe3cbcca85f90b3985985b8e265ee872a2ab2" rel="noopener noreferrer">1c0fe3cb</a>)</li>
<li><strong>cli:</strong>
<ul>
<li>Move long text strings into constants. (<a href="https://github.com/rust-lang/rustlings/commit/f78c48020830d7900dd8d81f355606581670446d" rel="noopener noreferrer">f78c4802</a>)</li>
<li>Replace <code>filter_map()</code> with <code>find_map()</code> (<a href="https://github.com/rust-lang/rustlings/commit/9b27e8d993ca20232fe38a412750c3f845a83b65" rel="noopener noreferrer">9b27e8d</a>)</li>
</ul>
</li>
<li><strong>clippy1:</strong>
<ul>
<li>Set clippy::float_cmp lint to deny (#907) (<a href="https://github.com/rust-lang/rustlings/commit/71a06044e6a96ff756dc31d7b0ed665ae4badb57" rel="noopener noreferrer">71a06044</a>)</li>
<li>Updated code to test correctness clippy lint with approx_constant lint rule (<a href="https://github.com/rust-lang/rustlings/commit/f2650de369810867d2763e935ac0963c32ec420e" rel="noopener noreferrer">f2650de3</a>)</li>
</ul>
</li>
<li><strong>errors1:</strong>
<ul>
<li>Add a comment to make the purpose more clear (#486) (<a href="https://github.com/rust-lang/rustlings/commit/cbcde345409c3e550112e449242848eaa3391bb6" rel="noopener noreferrer">cbcde345</a>)</li>
<li>Don't modify tests (#958) (<a href="https://github.com/rust-lang/rustlings/commit/60bb7cc3931d21d3986ad52b2b302e632a93831c" rel="noopener noreferrer">60bb7cc</a>)</li>
</ul>
</li>
<li><strong>errors6:</strong> Remove existing answer code (<a href="https://github.com/rust-lang/rustlings/commit/43d0623086edbc46fe896ba59c7afa22c3da9f7a" rel="noopener noreferrer">43d0623</a>)</li>
<li><strong>functions5:</strong> Remove wrong new line and small English improvements (#885) (<a href="https://github.com/rust-lang/rustlings/commit/8ef4869b264094e5a9b50452b4534823a9df19c3" rel="noopener noreferrer">8ef4869b</a>)</li>
<li><strong>install:</strong> protect path with whitespaces using quotes and stop at the first error (<a href="https://github.com/rust-lang/rustlings/commit/d114847f256c5f571c0b4c87e04b04bce3435509" rel="noopener noreferrer">d114847f</a>)</li>
<li><strong>intro1:</strong> Add compiler error explanation. (<a href="https://github.com/rust-lang/rustlings/commit/9b8de65525a5576b78cf0c8e4098cdd34296338f" rel="noopener noreferrer">9b8de655</a>)</li>
<li><strong>iterators1:</strong> reorder TODO steps (<a href="https://github.com/rust-lang/rustlings/commit/0bd7a0631a17a9d69af5746795a30efc9cf64e6e" rel="noopener noreferrer">0bd7a063</a>)</li>
<li><strong>move_semantics2:</strong> Add comment (<a href="https://github.com/rust-lang/rustlings/commit/89650f808af23a32c9a2c6d46592b77547a6a464" rel="noopener noreferrer">89650f80</a>)</li>
<li><strong>move_semantics5:</strong> correct typo (#857) (<a href="https://github.com/rust-lang/rustlings/commit/46c28d5cef3d8446b5a356b19d8dbc725f91a3a0" rel="noopener noreferrer">46c28d5c</a>)</li>
<li><strong>quiz1:</strong> update to say quiz covers "If" (<a href="https://github.com/rust-lang/rustlings/commit/1622e8c198d89739765c915203efff0091bdeb78" rel="noopener noreferrer">1622e8c1</a>)</li>
<li><strong>structs3:</strong>
<ul>
<li>Add a hint for panic (#608) (<a href="https://github.com/rust-lang/rustlings/commit/4f7ff5d9c7b2d8b045194c1a9469d37e30257c4a" rel="noopener noreferrer">4f7ff5d9</a>)</li>
<li>remove redundant 'return' (#852) (<a href="https://github.com/rust-lang/rustlings/commit/bf33829da240375d086f96267fc2e02fa6b07001" rel="noopener noreferrer">bf33829d</a>)</li>
<li>Assigned value to <code>cents_per_gram</code> in test (<a href="https://github.com/rust-lang/rustlings/commit/d1ee2daf14f19105e6db3f9c610f44293d688532" rel="noopener noreferrer">d1ee2da</a>)</li>
</ul>
</li>
<li><strong>structs3.rs:</strong> assigned value to cents_per_gram in test (<a href="https://github.com/rust-lang/rustlings/commit/d1ee2daf14f19105e6db3f9c610f44293d688532" rel="noopener noreferrer">d1ee2daf</a>)</li>
<li><strong>traits1:</strong> rename test functions to snake case (#854) (<a href="https://github.com/rust-lang/rustlings/commit/1663a16eade6ca646b6ed061735f7982434d530d" rel="noopener noreferrer">1663a16e</a>)</li>
</ul>
<h4>Documentation improvements</h4>
<ul>
<li>Add hints on how to get GCC installed (#741) (<a href="https://github.com/rust-lang/rustlings/commit/bc5686174463ad6f4f6b824b0e9b97c3039d4886" rel="noopener noreferrer">bc56861</a>)</li>
<li>Fix some code blocks that were not highlighted (<a href="https://github.com/rust-lang/rustlings/commit/17f9d7429ccd133a72e815fb5618e0ce79560929" rel="noopener noreferrer">17f9d74</a>)</li>
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<h1>Rustlings 4.7.1</h1>
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4.7.1
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Apr 20 2022 at 07:46 UTC
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<h4>Features</h4>
<ul>
<li>The amount of dependency crates that need to be compiled went down from ~65 to
~45 by bumping dependency versions.</li>
<li>The minimum Rust version in the install scripts has been bumped to 1.56.0 (this isn't in
the release itself, since install scripts don't really get versioned)</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li><strong>arc1</strong>: A small part has been rewritten using a more functional code style (#968).</li>
<li><strong>using_as</strong>: A small part has been refactored to use <code>sum</code> instead of <code>fold</code>, resulting
in better readability.</li>
</ul>
<h4>Housekeeping</h4>
<ul>
<li>The changelog will now be manually written instead of being automatically generated by the
Git log.</li>
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4.8.0
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Jul 1 2022 at 14:50 UTC
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<h4>Features</h4>
<ul>
<li>Added a progress indicator for <code>rustlings watch</code>.</li>
<li>The installation script now checks for Rustup being installed.</li>
<li>Added a <code>rustlings lsp</code> command to enable <code>rust-analyzer</code>.</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li><strong>move_semantics5</strong>: Replaced "in vogue" with "in scope" in hint.</li>
<li><strong>if2</strong>: Fixed a typo in the hint.</li>
<li><strong>variables1</strong>: Fixed an incorrect line reference in the hint.</li>
<li>Fixed an out of bounds check in the installation Bash script.</li>
</ul>
<h4>Housekeeping</h4>
<ul>
<li>Replaced the git.io URL with the fully qualified URL because of git.io's sunsetting.</li>
<li>Removed the deprecated Rust GitPod extension.</li>
</ul>
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<h1>Rustlings 5.0.0</h1>
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5.0.0
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Jul 16 2022 at 12:36 UTC
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<div class="release-body">
<h4>Features</h4>
<ul>
<li>Hint comments in exercises now also include a reference to the
<code>hint</code> watch mode subcommand.</li>
<li><strong>intro1</strong>: Added more hints to point the user to the source file.</li>
<li><strong>variables</strong>: Switched variables3 and variables4.</li>
<li>Moved <code>vec</code> and <code>primitive_types</code> exercises before <code>move_semantics</code>.</li>
<li>Renamed <code>vec</code> to <code>vecs</code> to be more in line with the naming in general.</li>
<li>Split up the <code>collections</code> exercises in their own folders.</li>
<li><strong>vec2</strong>: Added a second part of the function that provides an alternative,
immutable way of modifying vec values.</li>
<li><strong>enums3</strong>: Added a hint.</li>
<li>Moved <code>strings</code> before <code>modules</code>.</li>
<li>Added a <code>strings3</code> exercise to teach modifying strings.</li>
<li>Added a <code>hashmaps3</code> exercise for some advanced usage of hashmaps.</li>
<li>Moved the original <code>quiz2</code> to be <code>strings4</code>, since it only tested strings
anyways.</li>
<li>Reworked <code>quiz2</code> into a new exercise that tests more chapters.</li>
<li>Renamed <code>option</code> to <code>options</code>.</li>
<li><strong>options1</strong>: Rewrote parts of the exercise to remove the weird array
iteration stuff.</li>
<li>Moved <code>generics3</code> to be <code>quiz3</code>.</li>
<li>Moved box/arc exercises behind <code>iterators</code>.</li>
<li><strong>iterators4</strong>: Added a test for factorials of zero.</li>
<li>Split <code>threads1</code> between two exercises, the first one focusing more on
<code>JoinHandle</code>s.</li>
<li>Added a <code>threads3</code> exercises that uses <code>std::sync::mpsc</code>.</li>
<li>Added a <code>clippy3</code> exercises with some more interesting checks.</li>
<li><strong>as_ref_mut</strong>: Added a section that actually tests <code>AsMut</code>.</li>
<li>Added 3 new lifetimes exercises.</li>
<li>Added 3 new traits exercises.</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li><strong>variables2</strong>: Made output messages more verbose.</li>
<li><strong>variables5</strong>: Added a nudging hint about shadowing.</li>
<li><strong>variables6</strong>: Fixed link to book.</li>
<li><strong>functions</strong>: Clarified the README wording. Generally cleaned up
some hints and added some extra comments.</li>
<li><strong>if2</strong>: Renamed function name to <code>foo_if_fizz</code>.</li>
<li><strong>move_semantics</strong>: Clarified some hints.</li>
<li><strong>quiz1</strong>: Renamed the function name to be more verbose.</li>
<li><strong>structs1</strong>: Use an integer type instead of strings. Renamed "unit structs"
to "unit-like structs", as is used in the book.</li>
<li><strong>structs3</strong>: Added the <code>panic!</code> statement in from the beginning.</li>
<li><strong>errors1</strong>: Use <code>is_empty()</code> instead of <code>len() &gt; 0</code></li>
<li><strong>errors3</strong>: Improved the hint.</li>
<li><strong>errors5</strong>: Improved exercise instructions and the hint.</li>
<li><strong>errors6</strong>: Provided the skeleton of one of the functions that's supposed
to be implemented.</li>
<li><strong>iterators3</strong>: Inserted <code>todo!</code> into <code>divide()</code> to keep a compiler error
from happening.</li>
<li><strong>from_str</strong>: Added a hint comment about string error message conversion with
<code>Box&lt;dyn Error&gt;</code>.</li>
<li><strong>try_from_into</strong>: Fixed the function name in comment.</li>
</ul>
<h4>Removed</h4>
<ul>
<li>Removed the legacy LSP feature that was using <code>mod.rs</code> files.</li>
<li>Removed <code>quiz4</code>.</li>
<li>Removed <code>advanced_errs</code>. These were the last exercises in the recommended
order, and I've always felt like they didn't quite fit in with the mostly
simple, book-following style we've had in Rustlings.</li>
</ul>
<h4>Housekeeping</h4>
<ul>
<li>Added missing exercises to the book index.</li>
<li>Updated spacing in Cargo.toml.</li>
<li>Added a GitHub actions config so that tests run on every PR/commit.</li>
</ul>
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5.1.0
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Aug 16 2022 at 07:56 UTC
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</div>
<div class="release-body">
<h4>Features</h4>
<ul>
<li>Added a new <code>rc1</code> exercise.</li>
<li>Added a new <code>cow1</code> exercise.</li>
</ul>
<h4>Bug Fixes</h4>
<ul>
<li><strong>variables5</strong>: Corrected reference to previous exercise</li>
<li><strong>functions4</strong>: Fixed line number reference</li>
<li><strong>strings3</strong>: Clarified comment wording</li>
<li><strong>traits4, traits5</strong>: Fixed line number reference</li>
<li><strong>traits5</strong>:
<ul>
<li>Fixed typo in "parameter"</li>
<li>Made exercise prefer a traits-based solution</li>
</ul>
</li>
<li><strong>lifetimes2</strong>: Improved hint</li>
<li><strong>threads3</strong>: Fixed typo in hint</li>
<li><strong>box1</strong>: Replaced <code>unimplemented!</code> with <code>todo!</code></li>
<li><strong>errors5</strong>: Provided an explanation for usage of <code>Box&lt;dyn Error&gt;</code></li>
<li><strong>quiz2</strong>: Fixed a typo</li>
<li><strong>macros</strong>: Updated the macros book link</li>
<li><strong>options1</strong>:
<ul>
<li>Removed unused code</li>
<li>Added more granular tests</li>
</ul>
</li>
<li>Fixed some comment syntax shenanigans in info.toml</li>
</ul>
<h4>Housekeeping</h4>
<ul>
<li>Fixed a typo in .editorconfig</li>
<li>Fixed a typo in integration_tests.rs</li>
<li>Clarified manual installation instructions using <code>cargo install --path .</code></li>
<li>Added a link to our Zulip in the readme file</li>
</ul>
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5.1.1
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Aug 17 2022 at 08:44 UTC
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<div class="release-body">
<h4>Bug Fixes</h4>
<ul>
<li>Fixed an incorrect assertion in options1</li>
</ul>
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5.2.0
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Aug 27 2022 at 18:50 UTC
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<h4>Added</h4>
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<li>Added a <code>reset</code> command</li>
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<h4>Changed</h4>
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<li><strong>options2</strong>: Convert the exercise to use tests</li>
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<h4>Fixed</h4>
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<li><strong>threads3</strong>: Fixed a typo</li>
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5.2.1
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Sep 6 2022 at 10:23 UTC
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<h4>Fixed</h4>
<ul>
<li><strong>quiz1</strong>: Reworded the comment to actually reflect what's going on in the tests.
Also added another assert just to make sure.</li>
<li><strong>rc1</strong>: Fixed a typo in the hint.</li>
<li><strong>lifetimes</strong>: Add quotes to the <code>println!</code> output, for readability.</li>
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5.3.0
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Dec 23 2022 at 16:10 UTC
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<h4>Added</h4>
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<li><strong>cli</strong>: Added a percentage display in watch mode</li>
<li>Added a <code>flake.nix</code> for Nix users</li>
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<h4>Changed</h4>
<ul>
<li><strong>structs3</strong>: Added an additional test</li>
<li><strong>macros</strong>: Added a link to MacroKata in the README</li>
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<h4>Fixed</h4>
<ul>
<li><strong>strings3</strong>: Added a link to <code>std</code> in the hint</li>
<li><strong>threads1</strong>: Corrected a hint link</li>
<li><strong>iterators1</strong>: Clarified hint steps</li>
<li><strong>errors5</strong>: Fix a typo in the hint</li>
<li><strong>options1</strong>: Clarified on the usage of the 24-hour system</li>
<li><strong>threads2, threads3</strong>: Explicitly use <code>Arc::clone</code></li>
<li><strong>structs3</strong>: Clarifed the hint</li>
<li><strong>quiz2, as_ref_mut, options1, traits1, traits2</strong>: Clarified hints</li>
<li><strong>traits1, traits2, cli</strong>: Tidied up unmatching backticks</li>
<li><strong>enums2</strong>: Removed unneccessary indirection of self</li>
<li><strong>enums3</strong>: Added an extra tuple comment</li>
</ul>
<h4>Housekeeping</h4>
<ul>
<li>Added a VSCode extension recommendation</li>
<li>Applied some Clippy and rustfmt formatting</li>
<li>Added a note on Windows PowerShell and other shell compatibility</li>
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5.4.0
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Feb 12 2023 at 17:03 UTC
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<h4>Changed</h4>
<ul>
<li>Reordered exercises
<ul>
<li>Unwrapped <code>standard_library_types</code> into <code>iterators</code> and <code>smart_pointers</code></li>
<li>Moved smart pointer exercises behind threads</li>
<li>Ordered <code>rc1</code> before <code>arc1</code></li>
</ul>
</li>
<li><strong>intro1</strong>: Added a note on <code>rustlings lsp</code></li>
<li><strong>threads1</strong>: Panic if threads are not joined</li>
<li><strong>cli</strong>:
<ul>
<li>Made progress bar update proportional to amount of files verified</li>
<li>Decreased <code>watch</code> delay from 2 to 1 second</li>
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<h4>Fixed</h4>
<ul>
<li>Capitalized "Rust" in exercise hints</li>
<li><strong>enums3</strong>: Removed superfluous tuple brackets</li>
<li><strong>quiz2, clippy1, iterators1</strong>: Fixed a typo</li>
<li><strong>rc1</strong>: Fixed a prompt error</li>
<li><strong>cli</strong>:
<ul>
<li>Fixed a typo in a method name</li>
<li>Specified the edition in <code>rustc</code> commands</li>
</ul>
</li>
</ul>
<h4>Housekeeping</h4>
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<li>Bumped min Rust version to 1.58 in installation script</li>
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5.4.1
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Mar 10 2023 at 16:40 UTC
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<h4>Changed</h4>
<ul>
<li><code>vecs</code>: Added links to <code>iter_mut</code> and <code>map</code> to README.md</li>
<li><code>cow1</code>: Changed main to tests</li>
<li><code>iterators1</code>: Formatted according to rustfmt</li>
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<h4>Fixed</h4>
<ul>
<li><code>errors5</code>: Unified undisclosed type notation</li>
<li><code>arc1</code>: Improved readability by avoiding implicit dereference</li>
<li><code>macros4</code>: Prevented auto-fix by adding <code>#[rustfmt::skip]</code></li>
<li><code>cli</code>: Actually show correct progress percentages</li>
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5.5.0
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May 17 2023 at 14:31 UTC
</span>
</div>
<div class="release-body">
<h4>Added</h4>
<ul>
<li><code>strings2</code>: Added a reference to the book chapter for reference conversion</li>
<li><code>lifetimes</code>: Added a link to the lifetimekata project</li>
<li>Added a new <code>tests4</code> exercises, which teaches about testing for panics</li>
<li>Added a <code>!</code> prefix command to watch mode that runs an external command</li>
<li>Added a <code>--success-hints</code> option to watch mode that shows hints on exercise success</li>
</ul>
<h4>Changed</h4>
<ul>
<li><code>vecs2</code>: Renamed iterator variable bindings for clarify</li>
<li><code>lifetimes</code>: Changed order of book references</li>
<li><code>hashmaps2</code>: Clarified instructions in the todo block</li>
<li>Moved lifetime exercises before test exercises (via the recommended book ordering)</li>
<li><code>options2</code>: Improved tests for layering options</li>
<li><code>modules2</code>: Added more information to the hint</li>
</ul>
<h4>Fixed</h4>
<ul>
<li><code>errors2</code>: Corrected a comment wording</li>
<li><code>iterators2</code>: Fixed a spelling mistake in the hint text</li>
<li><code>variables</code>: Wrapped the mut keyword with backticks for readability</li>
<li><code>move_semantics2</code>: Removed references to line numbers</li>
<li><code>cow1</code>: Clarified the <code>owned_no_mutation</code> comments</li>
<li><code>options3</code>: Changed exercise to panic when no match is found</li>
<li><code>rustlings lsp</code> now generates absolute paths, which should fix VSCode <code>rust-analyzer</code> usage on Windows</li>
</ul>
<h4>Housekeeping</h4>
<ul>
<li>Added a markdown linter to run on GitHub actions</li>
<li>Split quick installation section into two code blocks</li>
</ul>
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5.5.1
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May 17 2023 at 19:07 UTC
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<div class="release-body">
<h4>Fixed</h4>
<ul>
<li>Reverted <code>rust-project.json</code> path generation due to an upstream <code>rust-analyzer</code> fix.</li>
</ul>
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<h1>Rustlings 5.6.0</h1>
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5.6.0
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Sep 4 2023 at 13:24 UTC
</span>
</div>
<div class="release-body">
<h4>Added</h4>
<ul>
<li>New exercise: <code>if3</code>, teaching the user about <code>if let</code> statements.</li>
<li><code>hashmaps2</code>: Added an extra test function to check if the amount of fruits is higher than zero.</li>
<li><code>enums3</code>: Added a test for <code>Message</code>.</li>
<li><code>if1</code>: Added a test case to check equal values.</li>
<li><code>if3</code>: Added a note specifying that there are no test changes needed.</li>
</ul>
<h4>Changed</h4>
<ul>
<li>Swapped the order of threads and smart pointer exercises.</li>
<li>Rewrote the CLI to use <code>clap</code> - it's matured much since we switched to <code>argh</code> :)</li>
<li><code>structs3</code>: Switched from i32 to u32.</li>
<li><code>move_semantics</code>: Switched 1-4 to tests, and rewrote them to be way simpler, while still teaching about the same
concepts.</li>
</ul>
<h4>Fixed</h4>
<ul>
<li><code>iterators5</code>:
<ul>
<li>Removed an outdated part of the hint.</li>
<li>Renamed variables to use snake_case.</li>
</ul>
</li>
<li><code>vecs2</code>: Updated the hint to reference the renamed loop variable.</li>
<li><code>enums3</code>: Changed message string in test so that it gets properly tested.</li>
<li><code>strings2</code>: Corrected line number in hint, then removed it (this both happened as part of this release cycle).</li>
<li><code>primitive_types4</code>: Updated hint to the correct ending index.</li>
<li><code>quiz1</code>: Removed duplicated sentence from exercise comments.</li>
<li><code>errors4</code>: Improved comment.</li>
<li><code>from_into</code>: Fixed test values.</li>
<li><code>cow1</code>: Added <code>.to_mut()</code> to distinguish from the previous test case.</li>
<li><code>threads2</code>: Updated hint text to reference the correct book heading.</li>
</ul>
<h4>Housekeeping</h4>
<ul>
<li>Cleaned up the explanation paragraphs at the start of each exercise.</li>
<li>Lots of Nix housekeeping that I don't feel qualified to write about!</li>
<li>Improved CI workflows, we're now testing on multiple platforms at once.</li>
</ul>
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5.6.1
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Sep 18 2023 at 08:18 UTC
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<div class="release-body">
<h4>Changed</h4>
<ul>
<li>Converted all exercises with assertions to test mode.</li>
</ul>
<h4>Fixed</h4>
<ul>
<li><code>cow1</code>: Reverted regression introduced by calling <code>to_mut</code> where it
shouldn't have been called, and clarified comment.</li>
<li><code>primitive_types3</code>: Require at least an array of 100 elements.</li>
<li>Removed hint comments when no hint exists for the exercise.</li>
<li><code>as_ref_mut</code>: Fixed a typo in a test function name.</li>
<li><code>enums3</code>: Fixed formatting with <code>rustfmt</code>.</li>
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@ -1,27 +0,0 @@
# Exercise to Book Chapter mapping
| Exercise | Book Chapter |
| ---------------------- | ------------------- |
| variables | §3.1 |
| functions | §3.3 |
| if | §3.5 |
| primitive_types | §3.2, §4.3 |
| vecs | §8.1 |
| move_semantics | §4.1-2 |
| structs | §5.1, §5.3 |
| enums | §6, §18.3 |
| strings | §8.2 |
| modules | §7 |
| hashmaps | §8.3 |
| options | §10.1 |
| error_handling | §9 |
| generics | §10 |
| traits | §10.2 |
| tests | §11.1 |
| lifetimes | §10.3 |
| iterators | §13.2-4 |
| threads | §16.1-3 |
| smart_pointers | §15, §16.3 |
| macros | §19.6 |
| clippy | §21.4 |
| conversions | n/a |

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@ -1,10 +0,0 @@
# Clippy
The Clippy tool is a collection of lints to analyze your code so you can catch common mistakes and improve your Rust code.
If you used the installation script for Rustlings, Clippy should be already installed.
If not you can install it manually via `rustup component add clippy`.
## Further information
- [GitHub Repository](https://github.com/rust-lang/rust-clippy).

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@ -1,26 +0,0 @@
// clippy1.rs
//
// The Clippy tool is a collection of lints to analyze your code so you can
// catch common mistakes and improve your Rust code.
//
// For these exercises the code will fail to compile when there are clippy
// warnings check clippy's suggestions from the output to solve the exercise.
//
// Execute `rustlings hint clippy1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
use std::f32;
fn main() {
let pi = 3.14f32;
let radius = 5.00f32;
let area = pi * f32::powi(radius, 2);
println!(
"The area of a circle with radius {:.2} is {:.5}!",
radius, area
)
}

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@ -1,15 +0,0 @@
// clippy2.rs
//
// Execute `rustlings hint clippy2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
let mut res = 42;
let option = Some(12);
for x in option {
res += x;
}
println!("{}", res);
}

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@ -1,30 +0,0 @@
// clippy3.rs
//
// Here's a couple more easy Clippy fixes, so you can see its utility.
// No hints.
// I AM NOT DONE
#[allow(unused_variables, unused_assignments)]
fn main() {
let my_option: Option<()> = None;
if my_option.is_none() {
my_option.unwrap();
}
let my_arr = &[
-1, -2, -3
-4, -5, -6
];
println!("My array! Here it is: {:?}", my_arr);
let my_empty_vec = vec![1, 2, 3, 4, 5].resize(0, 5);
println!("This Vec is empty, see? {:?}", my_empty_vec);
let mut value_a = 45;
let mut value_b = 66;
// Let's swap these two!
value_a = value_b;
value_b = value_a;
println!("value a: {}; value b: {}", value_a, value_b);
}

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@ -1,23 +0,0 @@
# Type conversions
Rust offers a multitude of ways to convert a value of a given type into another type.
The simplest form of type conversion is a type cast expression. It is denoted with the binary operator `as`. For instance, `println!("{}", 1 + 1.0);` would not compile, since `1` is an integer while `1.0` is a float. However, `println!("{}", 1 as f32 + 1.0)` should compile. The exercise [`using_as`](using_as.rs) tries to cover this.
Rust also offers traits that facilitate type conversions upon implementation. These traits can be found under the [`convert`](https://doc.rust-lang.org/std/convert/index.html) module.
The traits are the following:
- `From` and `Into` covered in [`from_into`](from_into.rs)
- `TryFrom` and `TryInto` covered in [`try_from_into`](try_from_into.rs)
- `AsRef` and `AsMut` covered in [`as_ref_mut`](as_ref_mut.rs)
Furthermore, the `std::str` module offers a trait called [`FromStr`](https://doc.rust-lang.org/std/str/trait.FromStr.html) which helps with converting strings into target types via the `parse` method on strings. If properly implemented for a given type `Person`, then `let p: Person = "Mark,20".parse().unwrap()` should both compile and run without panicking.
These should be the main ways ***within the standard library*** to convert data into your desired types.
## Further information
These are not directly covered in the book, but the standard library has a great documentation for it.
- [conversions](https://doc.rust-lang.org/std/convert/index.html)
- [`FromStr` trait](https://doc.rust-lang.org/std/str/trait.FromStr.html)

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@ -1,65 +0,0 @@
// as_ref_mut.rs
//
// AsRef and AsMut allow for cheap reference-to-reference conversions. Read more
// about them at https://doc.rust-lang.org/std/convert/trait.AsRef.html and
// https://doc.rust-lang.org/std/convert/trait.AsMut.html, respectively.
//
// Execute `rustlings hint as_ref_mut` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
// Obtain the number of bytes (not characters) in the given argument.
// TODO: Add the AsRef trait appropriately as a trait bound.
fn byte_counter<T>(arg: T) -> usize {
arg.as_ref().as_bytes().len()
}
// Obtain the number of characters (not bytes) in the given argument.
// TODO: Add the AsRef trait appropriately as a trait bound.
fn char_counter<T>(arg: T) -> usize {
arg.as_ref().chars().count()
}
// Squares a number using as_mut().
// TODO: Add the appropriate trait bound.
fn num_sq<T>(arg: &mut T) {
// TODO: Implement the function body.
???
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn different_counts() {
let s = "Café au lait";
assert_ne!(char_counter(s), byte_counter(s));
}
#[test]
fn same_counts() {
let s = "Cafe au lait";
assert_eq!(char_counter(s), byte_counter(s));
}
#[test]
fn different_counts_using_string() {
let s = String::from("Café au lait");
assert_ne!(char_counter(s.clone()), byte_counter(s));
}
#[test]
fn same_counts_using_string() {
let s = String::from("Cafe au lait");
assert_eq!(char_counter(s.clone()), byte_counter(s));
}
#[test]
fn mut_box() {
let mut num: Box<u32> = Box::new(3);
num_sq(&mut num);
assert_eq!(*num, 9);
}
}

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@ -1,140 +0,0 @@
// from_into.rs
//
// The From trait is used for value-to-value conversions. If From is implemented
// correctly for a type, the Into trait should work conversely. You can read
// more about it at https://doc.rust-lang.org/std/convert/trait.From.html
//
// Execute `rustlings hint from_into` or use the `hint` watch subcommand for a
// hint.
#[derive(Debug)]
struct Person {
name: String,
age: usize,
}
// We implement the Default trait to use it as a fallback
// when the provided string is not convertible into a Person object
impl Default for Person {
fn default() -> Person {
Person {
name: String::from("John"),
age: 30,
}
}
}
// Your task is to complete this implementation in order for the line `let p =
// Person::from("Mark,20")` to compile Please note that you'll need to parse the
// age component into a `usize` with something like `"4".parse::<usize>()`. The
// outcome of this needs to be handled appropriately.
//
// Steps:
// 1. If the length of the provided string is 0, then return the default of
// Person.
// 2. Split the given string on the commas present in it.
// 3. Extract the first element from the split operation and use it as the name.
// 4. If the name is empty, then return the default of Person.
// 5. Extract the other element from the split operation and parse it into a
// `usize` as the age.
// If while parsing the age, something goes wrong, then return the default of
// Person Otherwise, then return an instantiated Person object with the results
// I AM NOT DONE
impl From<&str> for Person {
fn from(s: &str) -> Person {
}
}
fn main() {
// Use the `from` function
let p1 = Person::from("Mark,20");
// Since From is implemented for Person, we should be able to use Into
let p2: Person = "Gerald,70".into();
println!("{:?}", p1);
println!("{:?}", p2);
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_default() {
// Test that the default person is 30 year old John
let dp = Person::default();
assert_eq!(dp.name, "John");
assert_eq!(dp.age, 30);
}
#[test]
fn test_bad_convert() {
// Test that John is returned when bad string is provided
let p = Person::from("");
assert_eq!(p.name, "John");
assert_eq!(p.age, 30);
}
#[test]
fn test_good_convert() {
// Test that "Mark,20" works
let p = Person::from("Mark,20");
assert_eq!(p.name, "Mark");
assert_eq!(p.age, 20);
}
#[test]
fn test_bad_age() {
// Test that "Mark,twenty" will return the default person due to an
// error in parsing age
let p = Person::from("Mark,twenty");
assert_eq!(p.name, "John");
assert_eq!(p.age, 30);
}
#[test]
fn test_missing_comma_and_age() {
let p: Person = Person::from("Mark");
assert_eq!(p.name, "John");
assert_eq!(p.age, 30);
}
#[test]
fn test_missing_age() {
let p: Person = Person::from("Mark,");
assert_eq!(p.name, "John");
assert_eq!(p.age, 30);
}
#[test]
fn test_missing_name() {
let p: Person = Person::from(",1");
assert_eq!(p.name, "John");
assert_eq!(p.age, 30);
}
#[test]
fn test_missing_name_and_age() {
let p: Person = Person::from(",");
assert_eq!(p.name, "John");
assert_eq!(p.age, 30);
}
#[test]
fn test_missing_name_and_invalid_age() {
let p: Person = Person::from(",one");
assert_eq!(p.name, "John");
assert_eq!(p.age, 30);
}
#[test]
fn test_trailing_comma() {
let p: Person = Person::from("Mike,32,");
assert_eq!(p.name, "Mike");
assert_eq!(p.age, 32);
}
#[test]
fn test_trailing_comma_and_some_string() {
let p: Person = Person::from("Mike,32,man");
assert_eq!(p.name, "Mike");
assert_eq!(p.age, 32);
}
}

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@ -1,133 +0,0 @@
// from_str.rs
//
// This is similar to from_into.rs, but this time we'll implement `FromStr` and
// return errors instead of falling back to a default value. Additionally, upon
// implementing FromStr, you can use the `parse` method on strings to generate
// an object of the implementor type. You can read more about it at
// https://doc.rust-lang.org/std/str/trait.FromStr.html
//
// Execute `rustlings hint from_str` or use the `hint` watch subcommand for a
// hint.
use std::num::ParseIntError;
use std::str::FromStr;
#[derive(Debug, PartialEq)]
struct Person {
name: String,
age: usize,
}
// We will use this error type for the `FromStr` implementation.
#[derive(Debug, PartialEq)]
enum ParsePersonError {
// Empty input string
Empty,
// Incorrect number of fields
BadLen,
// Empty name field
NoName,
// Wrapped error from parse::<usize>()
ParseInt(ParseIntError),
}
// I AM NOT DONE
// Steps:
// 1. If the length of the provided string is 0, an error should be returned
// 2. Split the given string on the commas present in it
// 3. Only 2 elements should be returned from the split, otherwise return an
// error
// 4. Extract the first element from the split operation and use it as the name
// 5. Extract the other element from the split operation and parse it into a
// `usize` as the age with something like `"4".parse::<usize>()`
// 6. If while extracting the name and the age something goes wrong, an error
// should be returned
// If everything goes well, then return a Result of a Person object
//
// As an aside: `Box<dyn Error>` implements `From<&'_ str>`. This means that if
// you want to return a string error message, you can do so via just using
// return `Err("my error message".into())`.
impl FromStr for Person {
type Err = ParsePersonError;
fn from_str(s: &str) -> Result<Person, Self::Err> {
}
}
fn main() {
let p = "Mark,20".parse::<Person>().unwrap();
println!("{:?}", p);
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn empty_input() {
assert_eq!("".parse::<Person>(), Err(ParsePersonError::Empty));
}
#[test]
fn good_input() {
let p = "John,32".parse::<Person>();
assert!(p.is_ok());
let p = p.unwrap();
assert_eq!(p.name, "John");
assert_eq!(p.age, 32);
}
#[test]
fn missing_age() {
assert!(matches!(
"John,".parse::<Person>(),
Err(ParsePersonError::ParseInt(_))
));
}
#[test]
fn invalid_age() {
assert!(matches!(
"John,twenty".parse::<Person>(),
Err(ParsePersonError::ParseInt(_))
));
}
#[test]
fn missing_comma_and_age() {
assert_eq!("John".parse::<Person>(), Err(ParsePersonError::BadLen));
}
#[test]
fn missing_name() {
assert_eq!(",1".parse::<Person>(), Err(ParsePersonError::NoName));
}
#[test]
fn missing_name_and_age() {
assert!(matches!(
",".parse::<Person>(),
Err(ParsePersonError::NoName | ParsePersonError::ParseInt(_))
));
}
#[test]
fn missing_name_and_invalid_age() {
assert!(matches!(
",one".parse::<Person>(),
Err(ParsePersonError::NoName | ParsePersonError::ParseInt(_))
));
}
#[test]
fn trailing_comma() {
assert_eq!("John,32,".parse::<Person>(), Err(ParsePersonError::BadLen));
}
#[test]
fn trailing_comma_and_some_string() {
assert_eq!(
"John,32,man".parse::<Person>(),
Err(ParsePersonError::BadLen)
);
}
}

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@ -1,193 +0,0 @@
// try_from_into.rs
//
// TryFrom is a simple and safe type conversion that may fail in a controlled
// way under some circumstances. Basically, this is the same as From. The main
// difference is that this should return a Result type instead of the target
// type itself. You can read more about it at
// https://doc.rust-lang.org/std/convert/trait.TryFrom.html
//
// Execute `rustlings hint try_from_into` or use the `hint` watch subcommand for
// a hint.
use std::convert::{TryFrom, TryInto};
#[derive(Debug, PartialEq)]
struct Color {
red: u8,
green: u8,
blue: u8,
}
// We will use this error type for these `TryFrom` conversions.
#[derive(Debug, PartialEq)]
enum IntoColorError {
// Incorrect length of slice
BadLen,
// Integer conversion error
IntConversion,
}
// I AM NOT DONE
// Your task is to complete this implementation and return an Ok result of inner
// type Color. You need to create an implementation for a tuple of three
// integers, an array of three integers, and a slice of integers.
//
// Note that the implementation for tuple and array will be checked at compile
// time, but the slice implementation needs to check the slice length! Also note
// that correct RGB color values must be integers in the 0..=255 range.
// Tuple implementation
impl TryFrom<(i16, i16, i16)> for Color {
type Error = IntoColorError;
fn try_from(tuple: (i16, i16, i16)) -> Result<Self, Self::Error> {
}
}
// Array implementation
impl TryFrom<[i16; 3]> for Color {
type Error = IntoColorError;
fn try_from(arr: [i16; 3]) -> Result<Self, Self::Error> {
}
}
// Slice implementation
impl TryFrom<&[i16]> for Color {
type Error = IntoColorError;
fn try_from(slice: &[i16]) -> Result<Self, Self::Error> {
}
}
fn main() {
// Use the `try_from` function
let c1 = Color::try_from((183, 65, 14));
println!("{:?}", c1);
// Since TryFrom is implemented for Color, we should be able to use TryInto
let c2: Result<Color, _> = [183, 65, 14].try_into();
println!("{:?}", c2);
let v = vec![183, 65, 14];
// With slice we should use `try_from` function
let c3 = Color::try_from(&v[..]);
println!("{:?}", c3);
// or take slice within round brackets and use TryInto
let c4: Result<Color, _> = (&v[..]).try_into();
println!("{:?}", c4);
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_tuple_out_of_range_positive() {
assert_eq!(
Color::try_from((256, 1000, 10000)),
Err(IntoColorError::IntConversion)
);
}
#[test]
fn test_tuple_out_of_range_negative() {
assert_eq!(
Color::try_from((-1, -10, -256)),
Err(IntoColorError::IntConversion)
);
}
#[test]
fn test_tuple_sum() {
assert_eq!(
Color::try_from((-1, 255, 255)),
Err(IntoColorError::IntConversion)
);
}
#[test]
fn test_tuple_correct() {
let c: Result<Color, _> = (183, 65, 14).try_into();
assert!(c.is_ok());
assert_eq!(
c.unwrap(),
Color {
red: 183,
green: 65,
blue: 14
}
);
}
#[test]
fn test_array_out_of_range_positive() {
let c: Result<Color, _> = [1000, 10000, 256].try_into();
assert_eq!(c, Err(IntoColorError::IntConversion));
}
#[test]
fn test_array_out_of_range_negative() {
let c: Result<Color, _> = [-10, -256, -1].try_into();
assert_eq!(c, Err(IntoColorError::IntConversion));
}
#[test]
fn test_array_sum() {
let c: Result<Color, _> = [-1, 255, 255].try_into();
assert_eq!(c, Err(IntoColorError::IntConversion));
}
#[test]
fn test_array_correct() {
let c: Result<Color, _> = [183, 65, 14].try_into();
assert!(c.is_ok());
assert_eq!(
c.unwrap(),
Color {
red: 183,
green: 65,
blue: 14
}
);
}
#[test]
fn test_slice_out_of_range_positive() {
let arr = [10000, 256, 1000];
assert_eq!(
Color::try_from(&arr[..]),
Err(IntoColorError::IntConversion)
);
}
#[test]
fn test_slice_out_of_range_negative() {
let arr = [-256, -1, -10];
assert_eq!(
Color::try_from(&arr[..]),
Err(IntoColorError::IntConversion)
);
}
#[test]
fn test_slice_sum() {
let arr = [-1, 255, 255];
assert_eq!(
Color::try_from(&arr[..]),
Err(IntoColorError::IntConversion)
);
}
#[test]
fn test_slice_correct() {
let v = vec![183, 65, 14];
let c: Result<Color, _> = Color::try_from(&v[..]);
assert!(c.is_ok());
assert_eq!(
c.unwrap(),
Color {
red: 183,
green: 65,
blue: 14
}
);
}
#[test]
fn test_slice_excess_length() {
let v = vec![0, 0, 0, 0];
assert_eq!(Color::try_from(&v[..]), Err(IntoColorError::BadLen));
}
#[test]
fn test_slice_insufficient_length() {
let v = vec![0, 0];
assert_eq!(Color::try_from(&v[..]), Err(IntoColorError::BadLen));
}
}

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@ -1,33 +0,0 @@
// using_as.rs
//
// Type casting in Rust is done via the usage of the `as` operator. Please note
// that the `as` operator is not only used when type casting. It also helps with
// renaming imports.
//
// The goal is to make sure that the division does not fail to compile and
// returns the proper type.
//
// Execute `rustlings hint using_as` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn average(values: &[f64]) -> f64 {
let total = values.iter().sum::<f64>();
total / values.len()
}
fn main() {
let values = [3.5, 0.3, 13.0, 11.7];
println!("{}", average(&values));
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn returns_proper_type_and_value() {
assert_eq!(average(&[3.5, 0.3, 13.0, 11.7]), 7.125);
}
}

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@ -1,10 +0,0 @@
# Enums
Rust allows you to define types called "enums" which enumerate possible values.
Enums are a feature in many languages, but their capabilities differ in each language. Rusts enums are most similar to algebraic data types in functional languages, such as F#, OCaml, and Haskell.
Useful in combination with enums is Rust's "pattern matching" facility, which makes it easy to run different code for different values of an enumeration.
## Further information
- [Enums](https://doc.rust-lang.org/book/ch06-00-enums.html)
- [Pattern syntax](https://doc.rust-lang.org/book/ch18-03-pattern-syntax.html)

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@ -1,17 +0,0 @@
// enums1.rs
//
// No hints this time! ;)
// I AM NOT DONE
#[derive(Debug)]
enum Message {
// TODO: define a few types of messages as used below
}
fn main() {
println!("{:?}", Message::Quit);
println!("{:?}", Message::Echo);
println!("{:?}", Message::Move);
println!("{:?}", Message::ChangeColor);
}

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@ -1,30 +0,0 @@
// enums2.rs
//
// Execute `rustlings hint enums2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
#[derive(Debug)]
enum Message {
// TODO: define the different variants used below
}
impl Message {
fn call(&self) {
println!("{:?}", self);
}
}
fn main() {
let messages = [
Message::Move { x: 10, y: 30 },
Message::Echo(String::from("hello world")),
Message::ChangeColor(200, 255, 255),
Message::Quit,
];
for message in &messages {
message.call();
}
}

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@ -1,73 +0,0 @@
// enums3.rs
//
// Address all the TODOs to make the tests pass!
//
// Execute `rustlings hint enums3` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
enum Message {
// TODO: implement the message variant types based on their usage below
}
struct Point {
x: u8,
y: u8,
}
struct State {
color: (u8, u8, u8),
position: Point,
quit: bool,
message: String,
}
impl State {
fn change_color(&mut self, color: (u8, u8, u8)) {
self.color = color;
}
fn quit(&mut self) {
self.quit = true;
}
fn echo(&mut self, s: String) {
self.message = s
}
fn move_position(&mut self, p: Point) {
self.position = p;
}
fn process(&mut self, message: Message) {
// TODO: create a match expression to process the different message variants
// Remember: When passing a tuple as a function argument, you'll need extra parentheses:
// fn function((t, u, p, l, e))
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_match_message_call() {
let mut state = State {
quit: false,
position: Point { x: 0, y: 0 },
color: (0, 0, 0),
message: "hello world".to_string(),
};
state.process(Message::ChangeColor(255, 0, 255));
state.process(Message::Echo(String::from("Hello world!")));
state.process(Message::Move(Point { x: 10, y: 15 }));
state.process(Message::Quit);
assert_eq!(state.color, (255, 0, 255));
assert_eq!(state.position.x, 10);
assert_eq!(state.position.y, 15);
assert_eq!(state.quit, true);
assert_eq!(state.message, "Hello world!");
}
}

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@ -1,12 +0,0 @@
# Error handling
Most errors arent serious enough to require the program to stop entirely.
Sometimes, when a function fails, its for a reason that you can easily interpret and respond to.
For example, if you try to open a file and that operation fails because the file doesnt exist, you might want to create the file instead of terminating the process.
## Further information
- [Error Handling](https://doc.rust-lang.org/book/ch09-02-recoverable-errors-with-result.html)
- [Generics](https://doc.rust-lang.org/book/ch10-01-syntax.html)
- [Result](https://doc.rust-lang.org/rust-by-example/error/result.html)
- [Boxing errors](https://doc.rust-lang.org/rust-by-example/error/multiple_error_types/boxing_errors.html)

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@ -1,43 +0,0 @@
// errors1.rs
//
// This function refuses to generate text to be printed on a nametag if you pass
// it an empty string. It'd be nicer if it explained what the problem was,
// instead of just sometimes returning `None`. Thankfully, Rust has a similar
// construct to `Option` that can be used to express error conditions. Let's use
// it!
//
// Execute `rustlings hint errors1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
pub fn generate_nametag_text(name: String) -> Option<String> {
if name.is_empty() {
// Empty names aren't allowed.
None
} else {
Some(format!("Hi! My name is {}", name))
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn generates_nametag_text_for_a_nonempty_name() {
assert_eq!(
generate_nametag_text("Beyoncé".into()),
Ok("Hi! My name is Beyoncé".into())
);
}
#[test]
fn explains_why_generating_nametag_text_fails() {
assert_eq!(
generate_nametag_text("".into()),
// Don't change this line
Err("`name` was empty; it must be nonempty.".into())
);
}
}

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@ -1,50 +0,0 @@
// errors2.rs
//
// Say we're writing a game where you can buy items with tokens. All items cost
// 5 tokens, and whenever you purchase items there is a processing fee of 1
// token. A player of the game will type in how many items they want to buy, and
// the `total_cost` function will calculate the total cost of the tokens. Since
// the player typed in the quantity, though, we get it as a string-- and they
// might have typed anything, not just numbers!
//
// Right now, this function isn't handling the error case at all (and isn't
// handling the success case properly either). What we want to do is: if we call
// the `total_cost` function on a string that is not a number, that function
// will return a `ParseIntError`, and in that case, we want to immediately
// return that error from our function and not try to multiply and add.
//
// There are at least two ways to implement this that are both correct-- but one
// is a lot shorter!
//
// Execute `rustlings hint errors2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
use std::num::ParseIntError;
pub fn total_cost(item_quantity: &str) -> Result<i32, ParseIntError> {
let processing_fee = 1;
let cost_per_item = 5;
let qty = item_quantity.parse::<i32>();
Ok(qty * cost_per_item + processing_fee)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn item_quantity_is_a_valid_number() {
assert_eq!(total_cost("34"), Ok(171));
}
#[test]
fn item_quantity_is_an_invalid_number() {
assert_eq!(
total_cost("beep boop").unwrap_err().to_string(),
"invalid digit found in string"
);
}
}

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@ -1,34 +0,0 @@
// errors3.rs
//
// This is a program that is trying to use a completed version of the
// `total_cost` function from the previous exercise. It's not working though!
// Why not? What should we do to fix it?
//
// Execute `rustlings hint errors3` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
use std::num::ParseIntError;
fn main() {
let mut tokens = 100;
let pretend_user_input = "8";
let cost = total_cost(pretend_user_input)?;
if cost > tokens {
println!("You can't afford that many!");
} else {
tokens -= cost;
println!("You now have {} tokens.", tokens);
}
}
pub fn total_cost(item_quantity: &str) -> Result<i32, ParseIntError> {
let processing_fee = 1;
let cost_per_item = 5;
let qty = item_quantity.parse::<i32>()?;
Ok(qty * cost_per_item + processing_fee)
}

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@ -1,32 +0,0 @@
// errors4.rs
//
// Execute `rustlings hint errors4` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
#[derive(PartialEq, Debug)]
struct PositiveNonzeroInteger(u64);
#[derive(PartialEq, Debug)]
enum CreationError {
Negative,
Zero,
}
impl PositiveNonzeroInteger {
fn new(value: i64) -> Result<PositiveNonzeroInteger, CreationError> {
// Hmm... Why is this always returning an Ok value?
Ok(PositiveNonzeroInteger(value as u64))
}
}
#[test]
fn test_creation() {
assert!(PositiveNonzeroInteger::new(10).is_ok());
assert_eq!(
Err(CreationError::Negative),
PositiveNonzeroInteger::new(-10)
);
assert_eq!(Err(CreationError::Zero), PositiveNonzeroInteger::new(0));
}

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@ -1,71 +0,0 @@
// errors5.rs
//
// This program uses an altered version of the code from errors4.
//
// This exercise uses some concepts that we won't get to until later in the
// course, like `Box` and the `From` trait. It's not important to understand
// them in detail right now, but you can read ahead if you like. For now, think
// of the `Box<dyn ???>` type as an "I want anything that does ???" type, which,
// given Rust's usual standards for runtime safety, should strike you as
// somewhat lenient!
//
// In short, this particular use case for boxes is for when you want to own a
// value and you care only that it is a type which implements a particular
// trait. To do so, The Box is declared as of type Box<dyn Trait> where Trait is
// the trait the compiler looks for on any value used in that context. For this
// exercise, that context is the potential errors which can be returned in a
// Result.
//
// What can we use to describe both errors? In other words, is there a trait
// which both errors implement?
//
// Execute `rustlings hint errors5` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
use std::error;
use std::fmt;
use std::num::ParseIntError;
// TODO: update the return type of `main()` to make this compile.
fn main() -> Result<(), Box<dyn ???>> {
let pretend_user_input = "42";
let x: i64 = pretend_user_input.parse()?;
println!("output={:?}", PositiveNonzeroInteger::new(x)?);
Ok(())
}
// Don't change anything below this line.
#[derive(PartialEq, Debug)]
struct PositiveNonzeroInteger(u64);
#[derive(PartialEq, Debug)]
enum CreationError {
Negative,
Zero,
}
impl PositiveNonzeroInteger {
fn new(value: i64) -> Result<PositiveNonzeroInteger, CreationError> {
match value {
x if x < 0 => Err(CreationError::Negative),
x if x == 0 => Err(CreationError::Zero),
x => Ok(PositiveNonzeroInteger(x as u64)),
}
}
}
// This is required so that `CreationError` can implement `error::Error`.
impl fmt::Display for CreationError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let description = match *self {
CreationError::Negative => "number is negative",
CreationError::Zero => "number is zero",
};
f.write_str(description)
}
}
impl error::Error for CreationError {}

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@ -1,94 +0,0 @@
// errors6.rs
//
// Using catch-all error types like `Box<dyn error::Error>` isn't recommended
// for library code, where callers might want to make decisions based on the
// error content, instead of printing it out or propagating it further. Here, we
// define a custom error type to make it possible for callers to decide what to
// do next when our function returns an error.
//
// Execute `rustlings hint errors6` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
use std::num::ParseIntError;
// This is a custom error type that we will be using in `parse_pos_nonzero()`.
#[derive(PartialEq, Debug)]
enum ParsePosNonzeroError {
Creation(CreationError),
ParseInt(ParseIntError),
}
impl ParsePosNonzeroError {
fn from_creation(err: CreationError) -> ParsePosNonzeroError {
ParsePosNonzeroError::Creation(err)
}
// TODO: add another error conversion function here.
// fn from_parseint...
}
fn parse_pos_nonzero(s: &str) -> Result<PositiveNonzeroInteger, ParsePosNonzeroError> {
// TODO: change this to return an appropriate error instead of panicking
// when `parse()` returns an error.
let x: i64 = s.parse().unwrap();
PositiveNonzeroInteger::new(x).map_err(ParsePosNonzeroError::from_creation)
}
// Don't change anything below this line.
#[derive(PartialEq, Debug)]
struct PositiveNonzeroInteger(u64);
#[derive(PartialEq, Debug)]
enum CreationError {
Negative,
Zero,
}
impl PositiveNonzeroInteger {
fn new(value: i64) -> Result<PositiveNonzeroInteger, CreationError> {
match value {
x if x < 0 => Err(CreationError::Negative),
x if x == 0 => Err(CreationError::Zero),
x => Ok(PositiveNonzeroInteger(x as u64)),
}
}
}
#[cfg(test)]
mod test {
use super::*;
#[test]
fn test_parse_error() {
// We can't construct a ParseIntError, so we have to pattern match.
assert!(matches!(
parse_pos_nonzero("not a number"),
Err(ParsePosNonzeroError::ParseInt(_))
));
}
#[test]
fn test_negative() {
assert_eq!(
parse_pos_nonzero("-555"),
Err(ParsePosNonzeroError::Creation(CreationError::Negative))
);
}
#[test]
fn test_zero() {
assert_eq!(
parse_pos_nonzero("0"),
Err(ParsePosNonzeroError::Creation(CreationError::Zero))
);
}
#[test]
fn test_positive() {
let x = PositiveNonzeroInteger::new(42);
assert!(x.is_ok());
assert_eq!(parse_pos_nonzero("42"), Ok(x.unwrap()));
}
}

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@ -1,8 +0,0 @@
# Functions
Here, you'll learn how to write functions and how the Rust compiler can help you debug errors even
in more complex code.
## Further information
- [How Functions Work](https://doc.rust-lang.org/book/ch03-03-how-functions-work.html)

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@ -1,10 +0,0 @@
// functions1.rs
//
// Execute `rustlings hint functions1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
call_me();
}

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@ -1,16 +0,0 @@
// functions2.rs
//
// Execute `rustlings hint functions2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
call_me(3);
}
fn call_me(num:) {
for i in 0..num {
println!("Ring! Call number {}", i + 1);
}
}

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@ -1,16 +0,0 @@
// functions3.rs
//
// Execute `rustlings hint functions3` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
call_me();
}
fn call_me(num: u32) {
for i in 0..num {
println!("Ring! Call number {}", i + 1);
}
}

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@ -1,28 +0,0 @@
// functions4.rs
//
// This store is having a sale where if the price is an even number, you get 10
// Rustbucks off, but if it's an odd number, it's 3 Rustbucks off. (Don't worry
// about the function bodies themselves, we're only interested in the signatures
// for now. If anything, this is a good way to peek ahead to future exercises!)
//
// Execute `rustlings hint functions4` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
let original_price = 51;
println!("Your sale price is {}", sale_price(original_price));
}
fn sale_price(price: i32) -> {
if is_even(price) {
price - 10
} else {
price - 3
}
}
fn is_even(num: i32) -> bool {
num % 2 == 0
}

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@ -1,15 +0,0 @@
// functions5.rs
//
// Execute `rustlings hint functions5` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
let answer = square(3);
println!("The square of 3 is {}", answer);
}
fn square(num: i32) -> i32 {
num * num;
}

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@ -1,11 +0,0 @@
# Generics
Generics is the topic of generalizing types and functionalities to broader cases.
This is extremely useful for reducing code duplication in many ways, but can call for rather involving syntax.
Namely, being generic requires taking great care to specify over which types a generic type is actually considered valid.
The simplest and most common use of generics is for type parameters.
## Further information
- [Generic Data Types](https://doc.rust-lang.org/stable/book/ch10-01-syntax.html)
- [Bounds](https://doc.rust-lang.org/rust-by-example/generics/bounds.html)

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@ -1,14 +0,0 @@
// generics1.rs
//
// This shopping list program isn't compiling! Use your knowledge of generics to
// fix it.
//
// Execute `rustlings hint generics1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
let mut shopping_list: Vec<?> = Vec::new();
shopping_list.push("milk");
}

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@ -1,34 +0,0 @@
// generics2.rs
//
// This powerful wrapper provides the ability to store a positive integer value.
// Rewrite it using generics so that it supports wrapping ANY type.
//
// Execute `rustlings hint generics2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
struct Wrapper {
value: u32,
}
impl Wrapper {
pub fn new(value: u32) -> Self {
Wrapper { value }
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn store_u32_in_wrapper() {
assert_eq!(Wrapper::new(42).value, 42);
}
#[test]
fn store_str_in_wrapper() {
assert_eq!(Wrapper::new("Foo").value, "Foo");
}
}

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@ -1,12 +0,0 @@
# Hashmaps
A *hash map* allows you to associate a value with a particular key.
You may also know this by the names [*unordered map* in C++](https://en.cppreference.com/w/cpp/container/unordered_map),
[*dictionary* in Python](https://docs.python.org/3/tutorial/datastructures.html#dictionaries) or an *associative array* in other languages.
This is the other data structure that we've been talking about before, when
talking about Vecs.
## Further information
- [Storing Keys with Associated Values in Hash Maps](https://doc.rust-lang.org/book/ch08-03-hash-maps.html)

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@ -1,44 +0,0 @@
// hashmaps1.rs
//
// A basket of fruits in the form of a hash map needs to be defined. The key
// represents the name of the fruit and the value represents how many of that
// particular fruit is in the basket. You have to put at least three different
// types of fruits (e.g apple, banana, mango) in the basket and the total count
// of all the fruits should be at least five.
//
// Make me compile and pass the tests!
//
// Execute `rustlings hint hashmaps1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
use std::collections::HashMap;
fn fruit_basket() -> HashMap<String, u32> {
let mut basket = // TODO: declare your hash map here.
// Two bananas are already given for you :)
basket.insert(String::from("banana"), 2);
// TODO: Put more fruits in your basket here.
basket
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn at_least_three_types_of_fruits() {
let basket = fruit_basket();
assert!(basket.len() >= 3);
}
#[test]
fn at_least_five_fruits() {
let basket = fruit_basket();
assert!(basket.values().sum::<u32>() >= 5);
}
}

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@ -1,93 +0,0 @@
// hashmaps2.rs
//
// We're collecting different fruits to bake a delicious fruit cake. For this,
// we have a basket, which we'll represent in the form of a hash map. The key
// represents the name of each fruit we collect and the value represents how
// many of that particular fruit we have collected. Three types of fruits -
// Apple (4), Mango (2) and Lychee (5) are already in the basket hash map. You
// must add fruit to the basket so that there is at least one of each kind and
// more than 11 in total - we have a lot of mouths to feed. You are not allowed
// to insert any more of these fruits!
//
// Make me pass the tests!
//
// Execute `rustlings hint hashmaps2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
use std::collections::HashMap;
#[derive(Hash, PartialEq, Eq)]
enum Fruit {
Apple,
Banana,
Mango,
Lychee,
Pineapple,
}
fn fruit_basket(basket: &mut HashMap<Fruit, u32>) {
let fruit_kinds = vec![
Fruit::Apple,
Fruit::Banana,
Fruit::Mango,
Fruit::Lychee,
Fruit::Pineapple,
];
for fruit in fruit_kinds {
// TODO: Insert new fruits if they are not already present in the
// basket. Note that you are not allowed to put any type of fruit that's
// already present!
}
}
#[cfg(test)]
mod tests {
use super::*;
// Don't modify this function!
fn get_fruit_basket() -> HashMap<Fruit, u32> {
let mut basket = HashMap::<Fruit, u32>::new();
basket.insert(Fruit::Apple, 4);
basket.insert(Fruit::Mango, 2);
basket.insert(Fruit::Lychee, 5);
basket
}
#[test]
fn test_given_fruits_are_not_modified() {
let mut basket = get_fruit_basket();
fruit_basket(&mut basket);
assert_eq!(*basket.get(&Fruit::Apple).unwrap(), 4);
assert_eq!(*basket.get(&Fruit::Mango).unwrap(), 2);
assert_eq!(*basket.get(&Fruit::Lychee).unwrap(), 5);
}
#[test]
fn at_least_five_types_of_fruits() {
let mut basket = get_fruit_basket();
fruit_basket(&mut basket);
let count_fruit_kinds = basket.len();
assert!(count_fruit_kinds >= 5);
}
#[test]
fn greater_than_eleven_fruits() {
let mut basket = get_fruit_basket();
fruit_basket(&mut basket);
let count = basket.values().sum::<u32>();
assert!(count > 11);
}
#[test]
fn all_fruit_types_in_basket() {
let mut basket = get_fruit_basket();
fruit_basket(&mut basket);
for amount in basket.values() {
assert_ne!(amount, &0);
}
}
}

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// hashmaps3.rs
//
// A list of scores (one per line) of a soccer match is given. Each line is of
// the form : "<team_1_name>,<team_2_name>,<team_1_goals>,<team_2_goals>"
// Example: England,France,4,2 (England scored 4 goals, France 2).
//
// You have to build a scores table containing the name of the team, goals the
// team scored, and goals the team conceded. One approach to build the scores
// table is to use a Hashmap. The solution is partially written to use a
// Hashmap, complete it to pass the test.
//
// Make me pass the tests!
//
// Execute `rustlings hint hashmaps3` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
use std::collections::HashMap;
// A structure to store the goal details of a team.
struct Team {
goals_scored: u8,
goals_conceded: u8,
}
fn build_scores_table(results: String) -> HashMap<String, Team> {
// The name of the team is the key and its associated struct is the value.
let mut scores: HashMap<String, Team> = HashMap::new();
for r in results.lines() {
let v: Vec<&str> = r.split(',').collect();
let team_1_name = v[0].to_string();
let team_1_score: u8 = v[2].parse().unwrap();
let team_2_name = v[1].to_string();
let team_2_score: u8 = v[3].parse().unwrap();
// TODO: Populate the scores table with details extracted from the
// current line. Keep in mind that goals scored by team_1
// will be the number of goals conceded from team_2, and similarly
// goals scored by team_2 will be the number of goals conceded by
// team_1.
}
scores
}
#[cfg(test)]
mod tests {
use super::*;
fn get_results() -> String {
let results = "".to_string()
+ "England,France,4,2\n"
+ "France,Italy,3,1\n"
+ "Poland,Spain,2,0\n"
+ "Germany,England,2,1\n";
results
}
#[test]
fn build_scores() {
let scores = build_scores_table(get_results());
let mut keys: Vec<&String> = scores.keys().collect();
keys.sort();
assert_eq!(
keys,
vec!["England", "France", "Germany", "Italy", "Poland", "Spain"]
);
}
#[test]
fn validate_team_score_1() {
let scores = build_scores_table(get_results());
let team = scores.get("England").unwrap();
assert_eq!(team.goals_scored, 5);
assert_eq!(team.goals_conceded, 4);
}
#[test]
fn validate_team_score_2() {
let scores = build_scores_table(get_results());
let team = scores.get("Spain").unwrap();
assert_eq!(team.goals_scored, 0);
assert_eq!(team.goals_conceded, 2);
}
}

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@ -1,7 +0,0 @@
# If
`if`, the most basic (but still surprisingly versatile!) type of control flow, is what you'll learn here.
## Further information
- [Control Flow - if expressions](https://doc.rust-lang.org/book/ch03-05-control-flow.html#if-expressions)

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@ -1,33 +0,0 @@
// if1.rs
//
// Execute `rustlings hint if1` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
pub fn bigger(a: i32, b: i32) -> i32 {
// Complete this function to return the bigger number!
// Do not use:
// - another function call
// - additional variables
}
// Don't mind this for now :)
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn ten_is_bigger_than_eight() {
assert_eq!(10, bigger(10, 8));
}
#[test]
fn fortytwo_is_bigger_than_thirtytwo() {
assert_eq!(42, bigger(32, 42));
}
#[test]
fn equal_numbers() {
assert_eq!(42, bigger(42, 42));
}
}

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@ -1,37 +0,0 @@
// if2.rs
//
// Step 1: Make me compile!
// Step 2: Get the bar_for_fuzz and default_to_baz tests passing!
//
// Execute `rustlings hint if2` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
pub fn foo_if_fizz(fizzish: &str) -> &str {
if fizzish == "fizz" {
"foo"
} else {
1
}
}
// No test changes needed!
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn foo_for_fizz() {
assert_eq!(foo_if_fizz("fizz"), "foo")
}
#[test]
fn bar_for_fuzz() {
assert_eq!(foo_if_fizz("fuzz"), "bar")
}
#[test]
fn default_to_baz() {
assert_eq!(foo_if_fizz("literally anything"), "baz")
}
}

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@ -1,56 +0,0 @@
// if3.rs
//
// Execute `rustlings hint if3` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
pub fn animal_habitat(animal: &str) -> &'static str {
let identifier = if animal == "crab" {
1
} else if animal == "gopher" {
2.0
} else if animal == "snake" {
3
} else {
"Unknown"
};
// DO NOT CHANGE THIS STATEMENT BELOW
let habitat = if identifier == 1 {
"Beach"
} else if identifier == 2 {
"Burrow"
} else if identifier == 3 {
"Desert"
} else {
"Unknown"
};
habitat
}
// No test changes needed.
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn gopher_lives_in_burrow() {
assert_eq!(animal_habitat("gopher"), "Burrow")
}
#[test]
fn snake_lives_in_desert() {
assert_eq!(animal_habitat("snake"), "Desert")
}
#[test]
fn crab_lives_on_beach() {
assert_eq!(animal_habitat("crab"), "Beach")
}
#[test]
fn unknown_animal() {
assert_eq!(animal_habitat("dinosaur"), "Unknown")
}
}

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@ -1,8 +0,0 @@
# Intro
Rust uses the `print!` and `println!` macros to print text to the console.
## Further information
- [Hello World](https://doc.rust-lang.org/rust-by-example/hello.html)
- [Formatted print](https://doc.rust-lang.org/rust-by-example/hello/print.html)

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@ -1,41 +0,0 @@
// intro1.rs
//
// About this `I AM NOT DONE` thing:
// We sometimes encourage you to keep trying things on a given exercise, even
// after you already figured it out. If you got everything working and feel
// ready for the next exercise, remove the `I AM NOT DONE` comment below.
//
// If you're running this using `rustlings watch`: The exercise file will be
// reloaded when you change one of the lines below! Try adding a `println!`
// line, or try changing what it outputs in your terminal. Try removing a
// semicolon and see what happens!
//
// Execute `rustlings hint intro1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
println!("Hello and");
println!(r#" welcome to... "#);
println!(r#" _ _ _ "#);
println!(r#" _ __ _ _ ___| |_| (_)_ __ __ _ ___ "#);
println!(r#" | '__| | | / __| __| | | '_ \ / _` / __| "#);
println!(r#" | | | |_| \__ \ |_| | | | | | (_| \__ \ "#);
println!(r#" |_| \__,_|___/\__|_|_|_| |_|\__, |___/ "#);
println!(r#" |___/ "#);
println!();
println!("This exercise compiles successfully. The remaining exercises contain a compiler");
println!("or logic error. The central concept behind Rustlings is to fix these errors and");
println!("solve the exercises. Good luck!");
println!();
println!("The source for this exercise is in `exercises/intro/intro1.rs`. Have a look!");
println!(
"Going forward, the source of the exercises will always be in the success/failure output."
);
println!();
println!(
"If you want to use rust-analyzer, Rust's LSP implementation, make sure your editor is set"
);
println!("up, and then run `rustlings lsp` before continuing.")
}

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@ -1,12 +0,0 @@
// intro2.rs
//
// Make the code print a greeting to the world.
//
// Execute `rustlings hint intro2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
println!("Hello {}!");
}

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@ -1,8 +0,0 @@
# Iterators
This section will teach you about Iterators.
## Further information
- [Iterator](https://doc.rust-lang.org/book/ch13-02-iterators.html)
- [Iterator documentation](https://doc.rust-lang.org/stable/std/iter/)

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@ -1,26 +0,0 @@
// iterators1.rs
//
// When performing operations on elements within a collection, iterators are
// essential. This module helps you get familiar with the structure of using an
// iterator and how to go through elements within an iterable collection.
//
// Make me compile by filling in the `???`s
//
// Execute `rustlings hint iterators1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
#[test]
fn main() {
let my_fav_fruits = vec!["banana", "custard apple", "avocado", "peach", "raspberry"];
let mut my_iterable_fav_fruits = ???; // TODO: Step 1
assert_eq!(my_iterable_fav_fruits.next(), Some(&"banana"));
assert_eq!(my_iterable_fav_fruits.next(), ???); // TODO: Step 2
assert_eq!(my_iterable_fav_fruits.next(), Some(&"avocado"));
assert_eq!(my_iterable_fav_fruits.next(), ???); // TODO: Step 3
assert_eq!(my_iterable_fav_fruits.next(), Some(&"raspberry"));
assert_eq!(my_iterable_fav_fruits.next(), ???); // TODO: Step 4
}

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// iterators2.rs
//
// In this exercise, you'll learn some of the unique advantages that iterators
// can offer. Follow the steps to complete the exercise.
//
// Execute `rustlings hint iterators2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
// Step 1.
// Complete the `capitalize_first` function.
// "hello" -> "Hello"
pub fn capitalize_first(input: &str) -> String {
let mut c = input.chars();
match c.next() {
None => String::new(),
Some(first) => ???,
}
}
// Step 2.
// Apply the `capitalize_first` function to a slice of string slices.
// Return a vector of strings.
// ["hello", "world"] -> ["Hello", "World"]
pub fn capitalize_words_vector(words: &[&str]) -> Vec<String> {
vec![]
}
// Step 3.
// Apply the `capitalize_first` function again to a slice of string slices.
// Return a single string.
// ["hello", " ", "world"] -> "Hello World"
pub fn capitalize_words_string(words: &[&str]) -> String {
String::new()
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_success() {
assert_eq!(capitalize_first("hello"), "Hello");
}
#[test]
fn test_empty() {
assert_eq!(capitalize_first(""), "");
}
#[test]
fn test_iterate_string_vec() {
let words = vec!["hello", "world"];
assert_eq!(capitalize_words_vector(&words), ["Hello", "World"]);
}
#[test]
fn test_iterate_into_string() {
let words = vec!["hello", " ", "world"];
assert_eq!(capitalize_words_string(&words), "Hello World");
}
}

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// iterators3.rs
//
// This is a bigger exercise than most of the others! You can do it! Here is
// your mission, should you choose to accept it:
// 1. Complete the divide function to get the first four tests to pass.
// 2. Get the remaining tests to pass by completing the result_with_list and
// list_of_results functions.
//
// Execute `rustlings hint iterators3` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
#[derive(Debug, PartialEq, Eq)]
pub enum DivisionError {
NotDivisible(NotDivisibleError),
DivideByZero,
}
#[derive(Debug, PartialEq, Eq)]
pub struct NotDivisibleError {
dividend: i32,
divisor: i32,
}
// Calculate `a` divided by `b` if `a` is evenly divisible by `b`.
// Otherwise, return a suitable error.
pub fn divide(a: i32, b: i32) -> Result<i32, DivisionError> {
todo!();
}
// Complete the function and return a value of the correct type so the test
// passes.
// Desired output: Ok([1, 11, 1426, 3])
fn result_with_list() -> () {
let numbers = vec![27, 297, 38502, 81];
let division_results = numbers.into_iter().map(|n| divide(n, 27));
}
// Complete the function and return a value of the correct type so the test
// passes.
// Desired output: [Ok(1), Ok(11), Ok(1426), Ok(3)]
fn list_of_results() -> () {
let numbers = vec![27, 297, 38502, 81];
let division_results = numbers.into_iter().map(|n| divide(n, 27));
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_success() {
assert_eq!(divide(81, 9), Ok(9));
}
#[test]
fn test_not_divisible() {
assert_eq!(
divide(81, 6),
Err(DivisionError::NotDivisible(NotDivisibleError {
dividend: 81,
divisor: 6
}))
);
}
#[test]
fn test_divide_by_0() {
assert_eq!(divide(81, 0), Err(DivisionError::DivideByZero));
}
#[test]
fn test_divide_0_by_something() {
assert_eq!(divide(0, 81), Ok(0));
}
#[test]
fn test_result_with_list() {
assert_eq!(format!("{:?}", result_with_list()), "Ok([1, 11, 1426, 3])");
}
#[test]
fn test_list_of_results() {
assert_eq!(
format!("{:?}", list_of_results()),
"[Ok(1), Ok(11), Ok(1426), Ok(3)]"
);
}
}

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@ -1,42 +0,0 @@
// iterators4.rs
//
// Execute `rustlings hint iterators4` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
pub fn factorial(num: u64) -> u64 {
// Complete this function to return the factorial of num
// Do not use:
// - return
// Try not to use:
// - imperative style loops (for, while)
// - additional variables
// For an extra challenge, don't use:
// - recursion
// Execute `rustlings hint iterators4` for hints.
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn factorial_of_0() {
assert_eq!(1, factorial(0));
}
#[test]
fn factorial_of_1() {
assert_eq!(1, factorial(1));
}
#[test]
fn factorial_of_2() {
assert_eq!(2, factorial(2));
}
#[test]
fn factorial_of_4() {
assert_eq!(24, factorial(4));
}
}

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