Compare commits
22 Commits
Author | SHA1 | Date |
---|---|---|
David E. Perez Negron R. | 06c8a197fa | |
David E. Perez Negron R. | 3db6c0baf4 | |
David E. Perez Negron R. | 1e91ec6f03 | |
David E. Perez Negron R. | ec8aefc4b9 | |
David E. Perez Negron R. | 0ac5f3a1e3 | |
David E. Perez Negron R. | 5a374a4588 | |
David E. Perez Negron R. | bfe2e1d8f0 | |
David E. Perez Negron R. | 4f31cb6daf | |
David E. Perez Negron R. | a7ac566467 | |
David E. Perez Negron R. | 4af39ccfde | |
David E. Perez Negron R. | 224044b2f3 | |
David E. Perez Negron R. | bec1d3215d | |
David E. Perez Negron R. | da76123b1f | |
David E. Perez Negron R. | 6fad289cb4 | |
David E. Perez Negron R. | b01f35fed6 | |
David E. Perez Negron R. | de06209a13 | |
David E. Perez Negron R. | f1dff8d3f4 | |
David E. Perez Negron R. | 470ac5a55e | |
David E. Perez Negron R. | 88d3945451 | |
David E. Perez Negron R. | 9c58757b42 | |
David E. Perez Negron R. | 42fbe4e178 | |
David E. Perez Negron R. | 44e5c34afc |
|
@ -2,11 +2,13 @@
|
||||||
//
|
//
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||||||
// No hints this time! ;)
|
// No hints this time! ;)
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||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
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||||||
#[derive(Debug)]
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#[derive(Debug)]
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||||||
enum Message {
|
enum Message {
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||||||
// TODO: define a few types of messages as used below
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Quit,
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||||||
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Echo,
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||||||
|
Move,
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||||||
|
ChangeColor
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||||||
}
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}
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||||||
|
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||||||
fn main() {
|
fn main() {
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||||||
|
|
|
@ -3,11 +3,13 @@
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||||||
// Execute `rustlings hint enums2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint enums2` or use the `hint` watch subcommand for a
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||||||
// hint.
|
// hint.
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||||||
|
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||||||
// I AM NOT DONE
|
|
||||||
|
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||||||
#[derive(Debug)]
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#[derive(Debug)]
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||||||
enum Message {
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enum Message {
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||||||
// TODO: define the different variants used below
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Move { x: i32, y: i32},
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||||||
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Echo(String),
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||||||
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ChangeColor(i32, i32, i32),
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||||||
|
Quit
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||||||
}
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}
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||||||
|
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||||||
impl Message {
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impl Message {
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||||||
|
|
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@ -5,10 +5,12 @@
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||||||
// Execute `rustlings hint enums3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint enums3` or use the `hint` watch subcommand for a
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||||||
// hint.
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// hint.
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||||||
|
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||||||
// I AM NOT DONE
|
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||||||
|
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||||||
enum Message {
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enum Message {
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||||||
// TODO: implement the message variant types based on their usage below
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Move(Point),
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||||||
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Echo(String),
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||||||
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ChangeColor(u8, u8, u8),
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||||||
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Quit
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||||||
}
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}
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||||||
|
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||||||
struct Point {
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struct Point {
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@ -45,6 +47,12 @@ impl State {
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||||||
// variants
|
// variants
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||||||
// Remember: When passing a tuple as a function argument, you'll need
|
// Remember: When passing a tuple as a function argument, you'll need
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||||||
// extra parentheses: fn function((t, u, p, l, e))
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// extra parentheses: fn function((t, u, p, l, e))
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||||||
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match message {
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Message::Move(point) => self.move_position(point),
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Message::Echo(echo) => self.echo(echo),
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||||||
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Message::ChangeColor(red, green, blue) => self.change_color((red,green,blue)),
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||||||
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Message::Quit => self.quit(),
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||||||
|
}
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||||||
}
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}
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||||||
}
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}
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||||||
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||||||
|
|
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@ -9,14 +9,12 @@
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||||||
// Execute `rustlings hint errors1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint errors1` or use the `hint` watch subcommand for a
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||||||
// hint.
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// hint.
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||||||
|
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||||||
// I AM NOT DONE
|
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||||||
|
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||||||
pub fn generate_nametag_text(name: String) -> Option<String> {
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pub fn generate_nametag_text(name: String) -> Result<String, String> {
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||||||
if name.is_empty() {
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if name.is_empty() {
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||||||
// Empty names aren't allowed.
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Err(format!("`name` was empty; it must be nonempty."))
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||||||
None
|
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||||||
} else {
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} else {
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Some(format!("Hi! My name is {}", name))
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Ok(format!("Hi! My name is {}", name))
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||||||
}
|
}
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||||||
}
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}
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||||||
|
|
||||||
|
|
|
@ -19,14 +19,13 @@
|
||||||
// Execute `rustlings hint errors2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint errors2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
use std::num::ParseIntError;
|
use std::num::ParseIntError;
|
||||||
|
|
||||||
pub fn total_cost(item_quantity: &str) -> Result<i32, ParseIntError> {
|
pub fn total_cost(item_quantity: &str) -> Result<i32, ParseIntError> {
|
||||||
let processing_fee = 1;
|
let processing_fee = 1;
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||||||
let cost_per_item = 5;
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let cost_per_item = 5;
|
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let qty = item_quantity.parse::<i32>();
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let qty = item_quantity.parse::<i32>()?;
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||||||
|
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||||||
Ok(qty * cost_per_item + processing_fee)
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Ok(qty * cost_per_item + processing_fee)
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||||||
}
|
}
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||||||
|
|
|
@ -7,7 +7,6 @@
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||||||
// Execute `rustlings hint errors3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint errors3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
use std::num::ParseIntError;
|
use std::num::ParseIntError;
|
||||||
|
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||||||
|
@ -15,7 +14,7 @@ fn main() {
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let mut tokens = 100;
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let mut tokens = 100;
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let pretend_user_input = "8";
|
let pretend_user_input = "8";
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||||||
|
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||||||
let cost = total_cost(pretend_user_input)?;
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let cost = total_cost(pretend_user_input).expect("Parse Int Error");
|
||||||
|
|
||||||
if cost > tokens {
|
if cost > tokens {
|
||||||
println!("You can't afford that many!");
|
println!("You can't afford that many!");
|
||||||
|
|
|
@ -3,7 +3,6 @@
|
||||||
// Execute `rustlings hint errors4` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint errors4` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[derive(PartialEq, Debug)]
|
#[derive(PartialEq, Debug)]
|
||||||
struct PositiveNonzeroInteger(u64);
|
struct PositiveNonzeroInteger(u64);
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|
@ -16,8 +15,11 @@ enum CreationError {
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||||||
|
|
||||||
impl PositiveNonzeroInteger {
|
impl PositiveNonzeroInteger {
|
||||||
fn new(value: i64) -> Result<PositiveNonzeroInteger, CreationError> {
|
fn new(value: i64) -> Result<PositiveNonzeroInteger, CreationError> {
|
||||||
// Hmm... Why is this always returning an Ok value?
|
match value.signum() {
|
||||||
Ok(PositiveNonzeroInteger(value as u64))
|
-1 => Err(CreationError::Negative),
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||||||
|
0 => Err(CreationError::Zero),
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||||||
|
_ => Ok(PositiveNonzeroInteger(value as u64))
|
||||||
|
}
|
||||||
}
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}
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||||||
}
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}
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||||||
|
|
||||||
|
|
|
@ -22,14 +22,13 @@
|
||||||
// Execute `rustlings hint errors5` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint errors5` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
use std::error;
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use std::error;
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||||||
use std::fmt;
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use std::fmt;
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||||||
use std::num::ParseIntError;
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use std::num::ParseIntError;
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||||||
|
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||||||
// TODO: update the return type of `main()` to make this compile.
|
// TODO: update the return type of `main()` to make this compile.
|
||||||
fn main() -> Result<(), Box<dyn ???>> {
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fn main() -> Result<(), Box<dyn error::Error>> {
|
||||||
let pretend_user_input = "42";
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let pretend_user_input = "42";
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let x: i64 = pretend_user_input.parse()?;
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let x: i64 = pretend_user_input.parse()?;
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println!("output={:?}", PositiveNonzeroInteger::new(x)?);
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println!("output={:?}", PositiveNonzeroInteger::new(x)?);
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||||||
|
|
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@ -9,7 +9,6 @@
|
||||||
// Execute `rustlings hint errors6` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint errors6` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
use std::num::ParseIntError;
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use std::num::ParseIntError;
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||||||
|
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||||||
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@ -26,12 +25,16 @@ impl ParsePosNonzeroError {
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||||||
}
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}
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||||||
// TODO: add another error conversion function here.
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// TODO: add another error conversion function here.
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||||||
// fn from_parseint...
|
// fn from_parseint...
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||||||
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fn from_parseint(err: ParseIntError) -> ParsePosNonzeroError {
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||||||
|
ParsePosNonzeroError::ParseInt(err)
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||||||
|
}
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||||||
}
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}
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||||||
|
|
||||||
fn parse_pos_nonzero(s: &str) -> Result<PositiveNonzeroInteger, ParsePosNonzeroError> {
|
fn parse_pos_nonzero(s: &str) -> Result<PositiveNonzeroInteger, ParsePosNonzeroError> {
|
||||||
// TODO: change this to return an appropriate error instead of panicking
|
// TODO: change this to return an appropriate error instead of panicking
|
||||||
// when `parse()` returns an error.
|
// when `parse()` returns an error.
|
||||||
let x: i64 = s.parse().unwrap();
|
//let x: i64 = s.parse().unwrap();
|
||||||
|
let x: i64 = s.parse().map_err(ParsePosNonzeroError::from_parseint)?;
|
||||||
PositiveNonzeroInteger::new(x).map_err(ParsePosNonzeroError::from_creation)
|
PositiveNonzeroInteger::new(x).map_err(ParsePosNonzeroError::from_creation)
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -3,8 +3,9 @@
|
||||||
// Execute `rustlings hint functions1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint functions1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
call_me();
|
call_me();
|
||||||
}
|
}
|
||||||
|
|
||||||
|
fn call_me(){}
|
||||||
|
|
|
@ -3,13 +3,12 @@
|
||||||
// Execute `rustlings hint functions2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint functions2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
call_me(3);
|
call_me(3);
|
||||||
}
|
}
|
||||||
|
|
||||||
fn call_me(num:) {
|
fn call_me(num: isize) {
|
||||||
for i in 0..num {
|
for i in 0..num {
|
||||||
println!("Ring! Call number {}", i + 1);
|
println!("Ring! Call number {}", i + 1);
|
||||||
}
|
}
|
||||||
|
|
|
@ -3,10 +3,9 @@
|
||||||
// Execute `rustlings hint functions3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint functions3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
call_me();
|
call_me(5);
|
||||||
}
|
}
|
||||||
|
|
||||||
fn call_me(num: u32) {
|
fn call_me(num: u32) {
|
||||||
|
|
|
@ -8,14 +8,13 @@
|
||||||
// Execute `rustlings hint functions4` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint functions4` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let original_price = 51;
|
let original_price = 51;
|
||||||
println!("Your sale price is {}", sale_price(original_price));
|
println!("Your sale price is {}", sale_price(original_price));
|
||||||
}
|
}
|
||||||
|
|
||||||
fn sale_price(price: i32) -> {
|
fn sale_price(price: i32) -> i32 {
|
||||||
if is_even(price) {
|
if is_even(price) {
|
||||||
price - 10
|
price - 10
|
||||||
} else {
|
} else {
|
||||||
|
|
|
@ -3,7 +3,6 @@
|
||||||
// Execute `rustlings hint functions5` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint functions5` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let answer = square(3);
|
let answer = square(3);
|
||||||
|
@ -11,5 +10,5 @@ fn main() {
|
||||||
}
|
}
|
||||||
|
|
||||||
fn square(num: i32) -> i32 {
|
fn square(num: i32) -> i32 {
|
||||||
num * num;
|
num * num
|
||||||
}
|
}
|
||||||
|
|
|
@ -6,9 +6,8 @@
|
||||||
// Execute `rustlings hint generics1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint generics1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let mut shopping_list: Vec<?> = Vec::new();
|
let mut shopping_list: Vec<&str> = Vec::new();
|
||||||
shopping_list.push("milk");
|
shopping_list.push("milk");
|
||||||
}
|
}
|
||||||
|
|
|
@ -6,14 +6,13 @@
|
||||||
// Execute `rustlings hint generics2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint generics2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
struct Wrapper {
|
struct Wrapper<T> {
|
||||||
value: u32,
|
value: T,
|
||||||
}
|
}
|
||||||
|
|
||||||
impl Wrapper {
|
impl<T> Wrapper<T> {
|
||||||
pub fn new(value: u32) -> Self {
|
pub fn new(value: T) -> Self {
|
||||||
Wrapper { value }
|
Wrapper { value }
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
@ -11,18 +11,19 @@
|
||||||
// Execute `rustlings hint hashmaps1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint hashmaps1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
use std::collections::HashMap;
|
use std::collections::HashMap;
|
||||||
|
|
||||||
fn fruit_basket() -> HashMap<String, u32> {
|
fn fruit_basket() -> HashMap<String, u32> {
|
||||||
let mut basket = // TODO: declare your hash map here.
|
let mut basket = HashMap::new(); // TODO: declare your hash map here.
|
||||||
|
|
||||||
// Two bananas are already given for you :)
|
// Two bananas are already given for you :)
|
||||||
basket.insert(String::from("banana"), 2);
|
basket.insert(String::from("banana"), 2);
|
||||||
|
|
||||||
// TODO: Put more fruits in your basket here.
|
// TODO: Put more fruits in your basket here.
|
||||||
|
|
||||||
|
basket.insert(String::from("apple"), 3);
|
||||||
|
basket.insert(String::from("mango"), 5);
|
||||||
basket
|
basket
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -14,7 +14,6 @@
|
||||||
// Execute `rustlings hint hashmaps2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint hashmaps2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
use std::collections::HashMap;
|
use std::collections::HashMap;
|
||||||
|
|
||||||
|
@ -40,7 +39,11 @@ fn fruit_basket(basket: &mut HashMap<Fruit, u32>) {
|
||||||
// TODO: Insert new fruits if they are not already present in the
|
// 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
|
// basket. Note that you are not allowed to put any type of fruit that's
|
||||||
// already present!
|
// already present!
|
||||||
|
if fruit == Fruit::Banana || fruit == Fruit::Pineapple {
|
||||||
|
basket.insert(fruit, 1);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
|
|
|
@ -14,7 +14,6 @@
|
||||||
// Execute `rustlings hint hashmaps3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint hashmaps3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
use std::collections::HashMap;
|
use std::collections::HashMap;
|
||||||
|
|
||||||
|
@ -39,6 +38,35 @@ fn build_scores_table(results: String) -> HashMap<String, Team> {
|
||||||
// will be the number of goals conceded from team_2, and similarly
|
// 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
|
// goals scored by team_2 will be the number of goals conceded by
|
||||||
// team_1.
|
// team_1.
|
||||||
|
let mut team_1 = Team{
|
||||||
|
goals_scored: team_1_score,
|
||||||
|
goals_conceded: team_2_score
|
||||||
|
};
|
||||||
|
|
||||||
|
let mut team_2 = Team{
|
||||||
|
goals_scored: team_2_score,
|
||||||
|
goals_conceded: team_1_score
|
||||||
|
};
|
||||||
|
|
||||||
|
match scores.get(&team_1_name) {
|
||||||
|
None => {scores.insert(team_1_name, team_1);},
|
||||||
|
|
||||||
|
Some(t) => {
|
||||||
|
team_1.goals_scored += t.goals_scored;
|
||||||
|
team_1.goals_conceded += t.goals_conceded;
|
||||||
|
scores.insert(team_1_name, team_1);
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
match scores.get(&team_2_name) {
|
||||||
|
None => {scores.insert(team_2_name, team_2);},
|
||||||
|
|
||||||
|
Some(t) => {
|
||||||
|
team_2.goals_scored += t.goals_scored;
|
||||||
|
team_2.goals_conceded += t.goals_conceded;
|
||||||
|
scores.insert(team_2_name, team_2);
|
||||||
|
}
|
||||||
|
};
|
||||||
}
|
}
|
||||||
scores
|
scores
|
||||||
}
|
}
|
||||||
|
|
|
@ -2,13 +2,13 @@
|
||||||
//
|
//
|
||||||
// Execute `rustlings hint if1` or use the `hint` watch subcommand for a hint.
|
// 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 {
|
pub fn bigger(a: i32, b: i32) -> i32 {
|
||||||
// Complete this function to return the bigger number!
|
// Complete this function to return the bigger number!
|
||||||
// Do not use:
|
// Do not use:
|
||||||
// - another function call
|
// - another function call
|
||||||
// - additional variables
|
// - additional variables
|
||||||
|
if a > b {a} else {b}
|
||||||
}
|
}
|
||||||
|
|
||||||
// Don't mind this for now :)
|
// Don't mind this for now :)
|
||||||
|
|
|
@ -5,13 +5,14 @@
|
||||||
//
|
//
|
||||||
// Execute `rustlings hint if2` or use the `hint` watch subcommand for a hint.
|
// 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 {
|
pub fn foo_if_fizz(fizzish: &str) -> &str {
|
||||||
if fizzish == "fizz" {
|
if fizzish == "fizz" {
|
||||||
"foo"
|
"foo"
|
||||||
|
} else if fizzish == "fuzz" {
|
||||||
|
"bar"
|
||||||
} else {
|
} else {
|
||||||
1
|
"baz"
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -2,17 +2,16 @@
|
||||||
//
|
//
|
||||||
// Execute `rustlings hint if3` or use the `hint` watch subcommand for a hint.
|
// 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 {
|
pub fn animal_habitat(animal: &str) -> &'static str {
|
||||||
let identifier = if animal == "crab" {
|
let identifier = if animal == "crab" {
|
||||||
1
|
1
|
||||||
} else if animal == "gopher" {
|
} else if animal == "gopher" {
|
||||||
2.0
|
2
|
||||||
} else if animal == "snake" {
|
} else if animal == "snake" {
|
||||||
3
|
3
|
||||||
} else {
|
} else {
|
||||||
"Unknown"
|
0
|
||||||
};
|
};
|
||||||
|
|
||||||
// DO NOT CHANGE THIS STATEMENT BELOW
|
// DO NOT CHANGE THIS STATEMENT BELOW
|
||||||
|
|
|
@ -13,7 +13,6 @@
|
||||||
// Execute `rustlings hint intro1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint intro1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
println!("Hello and");
|
println!("Hello and");
|
||||||
|
|
|
@ -5,8 +5,7 @@
|
||||||
// Execute `rustlings hint intro2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint intro2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
println!("Hello {}!");
|
println!("Hello World!");
|
||||||
}
|
}
|
||||||
|
|
|
@ -9,18 +9,17 @@
|
||||||
// Execute `rustlings hint iterators1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint iterators1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn main() {
|
fn main() {
|
||||||
let my_fav_fruits = vec!["banana", "custard apple", "avocado", "peach", "raspberry"];
|
let my_fav_fruits = vec!["banana", "custard apple", "avocado", "peach", "raspberry"];
|
||||||
|
|
||||||
let mut my_iterable_fav_fruits = ???; // TODO: Step 1
|
let mut my_iterable_fav_fruits = my_fav_fruits.iter(); // TODO: Step 1
|
||||||
|
|
||||||
assert_eq!(my_iterable_fav_fruits.next(), Some(&"banana"));
|
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(&"custard apple")); // TODO: Step 2
|
||||||
assert_eq!(my_iterable_fav_fruits.next(), Some(&"avocado"));
|
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(&"peach")); // TODO: Step 3
|
||||||
assert_eq!(my_iterable_fav_fruits.next(), Some(&"raspberry"));
|
assert_eq!(my_iterable_fav_fruits.next(), Some(&"raspberry"));
|
||||||
assert_eq!(my_iterable_fav_fruits.next(), ???); // TODO: Step 4
|
assert_eq!(my_iterable_fav_fruits.next(), None); // TODO: Step 4
|
||||||
}
|
}
|
||||||
|
|
|
@ -6,7 +6,6 @@
|
||||||
// Execute `rustlings hint iterators2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint iterators2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
// Step 1.
|
// Step 1.
|
||||||
// Complete the `capitalize_first` function.
|
// Complete the `capitalize_first` function.
|
||||||
|
@ -15,8 +14,11 @@ pub fn capitalize_first(input: &str) -> String {
|
||||||
let mut c = input.chars();
|
let mut c = input.chars();
|
||||||
match c.next() {
|
match c.next() {
|
||||||
None => String::new(),
|
None => String::new(),
|
||||||
Some(first) => ???,
|
Some(first) => {
|
||||||
|
first.to_ascii_uppercase().to_string() + c.as_str()
|
||||||
|
},
|
||||||
}
|
}
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
||||||
// Step 2.
|
// Step 2.
|
||||||
|
@ -24,7 +26,7 @@ pub fn capitalize_first(input: &str) -> String {
|
||||||
// Return a vector of strings.
|
// Return a vector of strings.
|
||||||
// ["hello", "world"] -> ["Hello", "World"]
|
// ["hello", "world"] -> ["Hello", "World"]
|
||||||
pub fn capitalize_words_vector(words: &[&str]) -> Vec<String> {
|
pub fn capitalize_words_vector(words: &[&str]) -> Vec<String> {
|
||||||
vec![]
|
words.iter().map(|x| capitalize_first(x)).collect()
|
||||||
}
|
}
|
||||||
|
|
||||||
// Step 3.
|
// Step 3.
|
||||||
|
@ -32,7 +34,8 @@ pub fn capitalize_words_vector(words: &[&str]) -> Vec<String> {
|
||||||
// Return a single string.
|
// Return a single string.
|
||||||
// ["hello", " ", "world"] -> "Hello World"
|
// ["hello", " ", "world"] -> "Hello World"
|
||||||
pub fn capitalize_words_string(words: &[&str]) -> String {
|
pub fn capitalize_words_string(words: &[&str]) -> String {
|
||||||
String::new()
|
let one_string: String = words.iter().map(|x| capitalize_first(x)).collect();
|
||||||
|
one_string
|
||||||
}
|
}
|
||||||
|
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
|
|
|
@ -26,7 +26,16 @@ pub struct NotDivisibleError {
|
||||||
// Calculate `a` divided by `b` if `a` is evenly divisible by `b`.
|
// Calculate `a` divided by `b` if `a` is evenly divisible by `b`.
|
||||||
// Otherwise, return a suitable error.
|
// Otherwise, return a suitable error.
|
||||||
pub fn divide(a: i32, b: i32) -> Result<i32, DivisionError> {
|
pub fn divide(a: i32, b: i32) -> Result<i32, DivisionError> {
|
||||||
todo!();
|
if b == 0 {
|
||||||
|
Err(DivisionError::DivideByZero)
|
||||||
|
} else if a % b == 0 {
|
||||||
|
Ok(a / b)
|
||||||
|
} else {
|
||||||
|
Err(DivisionError::NotDivisible(NotDivisibleError {
|
||||||
|
dividend: a,
|
||||||
|
divisor: b
|
||||||
|
}))
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
// Complete the function and return a value of the correct type so the test
|
// Complete the function and return a value of the correct type so the test
|
||||||
|
@ -35,6 +44,7 @@ pub fn divide(a: i32, b: i32) -> Result<i32, DivisionError> {
|
||||||
fn result_with_list() -> () {
|
fn result_with_list() -> () {
|
||||||
let numbers = vec![27, 297, 38502, 81];
|
let numbers = vec![27, 297, 38502, 81];
|
||||||
let division_results = numbers.into_iter().map(|n| divide(n, 27));
|
let division_results = numbers.into_iter().map(|n| divide(n, 27));
|
||||||
|
division_results.filter(|x| Ok(x)).collect()
|
||||||
}
|
}
|
||||||
|
|
||||||
// Complete the function and return a value of the correct type so the test
|
// Complete the function and return a value of the correct type so the test
|
||||||
|
|
|
@ -8,9 +8,8 @@
|
||||||
// Execute `rustlings hint lifetimes1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint lifetimes1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn longest(x: &str, y: &str) -> &str {
|
fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
|
||||||
if x.len() > y.len() {
|
if x.len() > y.len() {
|
||||||
x
|
x
|
||||||
} else {
|
} else {
|
||||||
|
|
|
@ -6,7 +6,6 @@
|
||||||
// Execute `rustlings hint lifetimes2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint lifetimes2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
|
fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
|
||||||
if x.len() > y.len() {
|
if x.len() > y.len() {
|
||||||
|
@ -22,6 +21,6 @@ fn main() {
|
||||||
{
|
{
|
||||||
let string2 = String::from("xyz");
|
let string2 = String::from("xyz");
|
||||||
result = longest(string1.as_str(), string2.as_str());
|
result = longest(string1.as_str(), string2.as_str());
|
||||||
|
println!("The longest string is '{}'", result);
|
||||||
}
|
}
|
||||||
println!("The longest string is '{}'", result);
|
|
||||||
}
|
}
|
||||||
|
|
|
@ -5,11 +5,10 @@
|
||||||
// Execute `rustlings hint lifetimes3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint lifetimes3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
struct Book {
|
struct Book<'a> {
|
||||||
author: &str,
|
author: &'a str,
|
||||||
title: &str,
|
title: &'a str,
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
|
|
|
@ -3,7 +3,6 @@
|
||||||
// Execute `rustlings hint modules1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint modules1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
mod sausage_factory {
|
mod sausage_factory {
|
||||||
// Don't let anybody outside of this module see this!
|
// Don't let anybody outside of this module see this!
|
||||||
|
@ -11,7 +10,7 @@ mod sausage_factory {
|
||||||
String::from("Ginger")
|
String::from("Ginger")
|
||||||
}
|
}
|
||||||
|
|
||||||
fn make_sausage() {
|
pub fn make_sausage() {
|
||||||
get_secret_recipe();
|
get_secret_recipe();
|
||||||
println!("sausage!");
|
println!("sausage!");
|
||||||
}
|
}
|
||||||
|
|
|
@ -7,12 +7,11 @@
|
||||||
// Execute `rustlings hint modules2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint modules2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
mod delicious_snacks {
|
mod delicious_snacks {
|
||||||
// TODO: Fix these use statements
|
// TODO: Fix these use statements
|
||||||
use self::fruits::PEAR as ???
|
pub use self::fruits::PEAR as fruit;
|
||||||
use self::veggies::CUCUMBER as ???
|
pub use self::veggies::CUCUMBER as veggie;
|
||||||
|
|
||||||
mod fruits {
|
mod fruits {
|
||||||
pub const PEAR: &'static str = "Pear";
|
pub const PEAR: &'static str = "Pear";
|
||||||
|
|
|
@ -8,10 +8,9 @@
|
||||||
// Execute `rustlings hint modules3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint modules3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
// TODO: Complete this use statement
|
// TODO: Complete this use statement
|
||||||
use ???
|
use std::time::{SystemTime, UNIX_EPOCH};
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
match SystemTime::now().duration_since(UNIX_EPOCH) {
|
match SystemTime::now().duration_since(UNIX_EPOCH) {
|
||||||
|
|
|
@ -3,7 +3,6 @@
|
||||||
// Execute `rustlings hint move_semantics1` or use the `hint` watch subcommand
|
// Execute `rustlings hint move_semantics1` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn main() {
|
fn main() {
|
||||||
|
@ -15,7 +14,7 @@ fn main() {
|
||||||
}
|
}
|
||||||
|
|
||||||
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
|
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
|
||||||
let vec = vec;
|
let mut vec = vec;
|
||||||
|
|
||||||
vec.push(88);
|
vec.push(88);
|
||||||
|
|
||||||
|
|
|
@ -5,20 +5,19 @@
|
||||||
// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand
|
// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn main() {
|
fn main() {
|
||||||
let vec0 = vec![22, 44, 66];
|
let vec0 = vec![22, 44, 66];
|
||||||
|
|
||||||
let mut vec1 = fill_vec(vec0);
|
let mut vec1 = fill_vec(&vec0);
|
||||||
|
|
||||||
assert_eq!(vec0, vec![22, 44, 66]);
|
assert_eq!(vec0, vec![22, 44, 66]);
|
||||||
assert_eq!(vec1, vec![22, 44, 66, 88]);
|
assert_eq!(vec1, vec![22, 44, 66, 88]);
|
||||||
}
|
}
|
||||||
|
|
||||||
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
|
fn fill_vec(vec: &Vec<i32>) -> Vec<i32> {
|
||||||
let mut vec = vec;
|
let mut vec = vec.to_vec();
|
||||||
|
|
||||||
vec.push(88);
|
vec.push(88);
|
||||||
|
|
||||||
|
|
|
@ -6,7 +6,6 @@
|
||||||
// Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand
|
// Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn main() {
|
fn main() {
|
||||||
|
@ -17,7 +16,7 @@ fn main() {
|
||||||
assert_eq!(vec1, vec![22, 44, 66, 88]);
|
assert_eq!(vec1, vec![22, 44, 66, 88]);
|
||||||
}
|
}
|
||||||
|
|
||||||
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
|
fn fill_vec(mut vec: Vec<i32>) -> Vec<i32> {
|
||||||
vec.push(88);
|
vec.push(88);
|
||||||
|
|
||||||
vec
|
vec
|
||||||
|
|
|
@ -7,13 +7,10 @@
|
||||||
// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand
|
// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn main() {
|
fn main() {
|
||||||
let vec0 = vec![22, 44, 66];
|
let mut vec1 = fill_vec();
|
||||||
|
|
||||||
let mut vec1 = fill_vec(vec0);
|
|
||||||
|
|
||||||
assert_eq!(vec1, vec![22, 44, 66, 88]);
|
assert_eq!(vec1, vec![22, 44, 66, 88]);
|
||||||
}
|
}
|
||||||
|
@ -21,7 +18,7 @@ fn main() {
|
||||||
// `fill_vec()` no longer takes `vec: Vec<i32>` as argument - don't change this!
|
// `fill_vec()` no longer takes `vec: Vec<i32>` as argument - don't change this!
|
||||||
fn fill_vec() -> Vec<i32> {
|
fn fill_vec() -> Vec<i32> {
|
||||||
// Instead, let's create and fill the Vec in here - how do you do that?
|
// Instead, let's create and fill the Vec in here - how do you do that?
|
||||||
let mut vec = vec;
|
let mut vec = vec![22, 44, 66];
|
||||||
|
|
||||||
vec.push(88);
|
vec.push(88);
|
||||||
|
|
||||||
|
|
|
@ -6,14 +6,13 @@
|
||||||
// Execute `rustlings hint move_semantics5` or use the `hint` watch subcommand
|
// Execute `rustlings hint move_semantics5` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn main() {
|
fn main() {
|
||||||
let mut x = 100;
|
let mut x = 100;
|
||||||
let y = &mut x;
|
let y = &mut x;
|
||||||
let z = &mut x;
|
|
||||||
*y += 100;
|
*y += 100;
|
||||||
|
let z = &mut x;
|
||||||
*z += 1000;
|
*z += 1000;
|
||||||
assert_eq!(x, 1200);
|
assert_eq!(x, 1200);
|
||||||
}
|
}
|
||||||
|
|
|
@ -5,24 +5,23 @@
|
||||||
// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand
|
// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let data = "Rust is great!".to_string();
|
let data = "Rust is great!".to_string();
|
||||||
|
|
||||||
get_char(data);
|
get_char(&data);
|
||||||
|
|
||||||
string_uppercase(&data);
|
string_uppercase(data);
|
||||||
}
|
}
|
||||||
|
|
||||||
// Should not take ownership
|
// Should not take ownership
|
||||||
fn get_char(data: String) -> char {
|
fn get_char(data: &String) -> char {
|
||||||
data.chars().last().unwrap()
|
data.chars().last().unwrap()
|
||||||
}
|
}
|
||||||
|
|
||||||
// Should take ownership
|
// Should take ownership
|
||||||
fn string_uppercase(mut data: &String) {
|
fn string_uppercase(mut data: String) {
|
||||||
data = &data.to_uppercase();
|
data = data.to_uppercase();
|
||||||
|
|
||||||
println!("{}", data);
|
println!("{}", data);
|
||||||
}
|
}
|
||||||
|
|
|
@ -3,7 +3,6 @@
|
||||||
// Execute `rustlings hint options1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint options1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
// This function returns how much icecream there is left in the fridge.
|
// This function returns how much icecream there is left in the fridge.
|
||||||
// If it's before 10PM, there's 5 pieces left. At 10PM, someone eats them
|
// If it's before 10PM, there's 5 pieces left. At 10PM, someone eats them
|
||||||
|
@ -13,7 +12,9 @@ fn maybe_icecream(time_of_day: u16) -> Option<u16> {
|
||||||
// value of 0 The Option output should gracefully handle cases where
|
// value of 0 The Option output should gracefully handle cases where
|
||||||
// time_of_day > 23.
|
// time_of_day > 23.
|
||||||
// TODO: Complete the function body - remember to return an Option!
|
// TODO: Complete the function body - remember to return an Option!
|
||||||
???
|
if time_of_day < 22 { Some(5) }
|
||||||
|
else if time_of_day >= 22 && time_of_day < 25 { Some(0) }
|
||||||
|
else { None }
|
||||||
}
|
}
|
||||||
|
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
|
@ -33,7 +34,7 @@ mod tests {
|
||||||
fn raw_value() {
|
fn raw_value() {
|
||||||
// TODO: Fix this test. How do you get at the value contained in the
|
// TODO: Fix this test. How do you get at the value contained in the
|
||||||
// Option?
|
// Option?
|
||||||
let icecreams = maybe_icecream(12);
|
let icecreams = maybe_icecream(12).expect("No icecream");
|
||||||
assert_eq!(icecreams, 5);
|
assert_eq!(icecreams, 5u16);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
@ -3,7 +3,6 @@
|
||||||
// Execute `rustlings hint options2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint options2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
mod tests {
|
mod tests {
|
||||||
|
@ -13,7 +12,7 @@ mod tests {
|
||||||
let optional_target = Some(target);
|
let optional_target = Some(target);
|
||||||
|
|
||||||
// TODO: Make this an if let statement whose value is "Some" type
|
// TODO: Make this an if let statement whose value is "Some" type
|
||||||
word = optional_target {
|
if let Some(word) = optional_target {
|
||||||
assert_eq!(word, target);
|
assert_eq!(word, target);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
@ -32,9 +31,11 @@ mod tests {
|
||||||
// TODO: make this a while let statement - remember that vector.pop also
|
// TODO: make this a while let statement - remember that vector.pop also
|
||||||
// adds another layer of Option<T>. You can stack `Option<T>`s into
|
// adds another layer of Option<T>. You can stack `Option<T>`s into
|
||||||
// while let and if let.
|
// while let and if let.
|
||||||
integer = optional_integers.pop() {
|
while let Some(int) = optional_integers.pop() {
|
||||||
assert_eq!(integer, cursor);
|
if let Some(integer) = int {
|
||||||
cursor -= 1;
|
assert_eq!(integer, cursor);
|
||||||
|
cursor -= 1;
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
assert_eq!(cursor, 0);
|
assert_eq!(cursor, 0);
|
||||||
|
|
|
@ -3,7 +3,6 @@
|
||||||
// Execute `rustlings hint options3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint options3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
struct Point {
|
struct Point {
|
||||||
x: i32,
|
x: i32,
|
||||||
|
@ -13,7 +12,7 @@ struct Point {
|
||||||
fn main() {
|
fn main() {
|
||||||
let y: Option<Point> = Some(Point { x: 100, y: 200 });
|
let y: Option<Point> = Some(Point { x: 100, y: 200 });
|
||||||
|
|
||||||
match y {
|
match &y {
|
||||||
Some(p) => println!("Co-ordinates are {},{} ", p.x, p.y),
|
Some(p) => println!("Co-ordinates are {},{} ", p.x, p.y),
|
||||||
_ => panic!("no match!"),
|
_ => panic!("no match!"),
|
||||||
}
|
}
|
||||||
|
|
|
@ -3,7 +3,6 @@
|
||||||
// Fill in the rest of the line that has code missing! No hints, there's no
|
// Fill in the rest of the line that has code missing! No hints, there's no
|
||||||
// tricks, just get used to typing these :)
|
// tricks, just get used to typing these :)
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
// Booleans (`bool`)
|
// Booleans (`bool`)
|
||||||
|
@ -13,7 +12,7 @@ fn main() {
|
||||||
println!("Good morning!");
|
println!("Good morning!");
|
||||||
}
|
}
|
||||||
|
|
||||||
let // Finish the rest of this line like the example! Or make it be false!
|
let is_evening = false;
|
||||||
if is_evening {
|
if is_evening {
|
||||||
println!("Good evening!");
|
println!("Good evening!");
|
||||||
}
|
}
|
||||||
|
|
|
@ -3,7 +3,6 @@
|
||||||
// Fill in the rest of the line that has code missing! No hints, there's no
|
// Fill in the rest of the line that has code missing! No hints, there's no
|
||||||
// tricks, just get used to typing these :)
|
// tricks, just get used to typing these :)
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
// Characters (`char`)
|
// Characters (`char`)
|
||||||
|
@ -19,7 +18,7 @@ fn main() {
|
||||||
println!("Neither alphabetic nor numeric!");
|
println!("Neither alphabetic nor numeric!");
|
||||||
}
|
}
|
||||||
|
|
||||||
let // Finish this line like the example! What's your favorite character?
|
let your_character = '😻';
|
||||||
// Try a letter, try a number, try a special character, try a character
|
// Try a letter, try a number, try a special character, try a character
|
||||||
// from a different language than your own, try an emoji!
|
// from a different language than your own, try an emoji!
|
||||||
if your_character.is_alphabetic() {
|
if your_character.is_alphabetic() {
|
||||||
|
|
|
@ -5,10 +5,9 @@
|
||||||
// Execute `rustlings hint primitive_types3` or use the `hint` watch subcommand
|
// Execute `rustlings hint primitive_types3` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let a = ???
|
let a = [5; 100];
|
||||||
|
|
||||||
if a.len() >= 100 {
|
if a.len() >= 100 {
|
||||||
println!("Wow, that's a big array!");
|
println!("Wow, that's a big array!");
|
||||||
|
|
|
@ -5,13 +5,12 @@
|
||||||
// Execute `rustlings hint primitive_types4` or use the `hint` watch subcommand
|
// Execute `rustlings hint primitive_types4` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn slice_out_of_array() {
|
fn slice_out_of_array() {
|
||||||
let a = [1, 2, 3, 4, 5];
|
let a = [1, 2, 3, 4, 5];
|
||||||
|
|
||||||
let nice_slice = ???
|
let nice_slice = &a[1..4];
|
||||||
|
|
||||||
assert_eq!([2, 3, 4], nice_slice)
|
assert_eq!([2, 3, 4], nice_slice)
|
||||||
}
|
}
|
||||||
|
|
|
@ -5,11 +5,10 @@
|
||||||
// Execute `rustlings hint primitive_types5` or use the `hint` watch subcommand
|
// Execute `rustlings hint primitive_types5` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let cat = ("Furry McFurson", 3.5);
|
let cat = ("Furry McFurson", 3.5);
|
||||||
let /* your pattern here */ = cat;
|
let (name, age) = cat;
|
||||||
|
|
||||||
println!("{} is {} years old.", name, age);
|
println!("{} is {} years old.", name, age);
|
||||||
}
|
}
|
||||||
|
|
|
@ -6,13 +6,12 @@
|
||||||
// Execute `rustlings hint primitive_types6` or use the `hint` watch subcommand
|
// Execute `rustlings hint primitive_types6` or use the `hint` watch subcommand
|
||||||
// for a hint.
|
// for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn indexing_tuple() {
|
fn indexing_tuple() {
|
||||||
let numbers = (1, 2, 3);
|
let numbers = (1, 2, 3);
|
||||||
// Replace below ??? with the tuple indexing syntax.
|
// Replace below ??? with the tuple indexing syntax.
|
||||||
let second = ???;
|
let second = numbers.1;
|
||||||
|
|
||||||
assert_eq!(2, second,
|
assert_eq!(2, second,
|
||||||
"This is not the 2nd number in the tuple!")
|
"This is not the 2nd number in the tuple!")
|
||||||
|
|
|
@ -13,10 +13,11 @@
|
||||||
//
|
//
|
||||||
// No hints this time ;)
|
// No hints this time ;)
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
// Put your function here!
|
// Put your function here!
|
||||||
// fn calculate_price_of_apples {
|
fn calculate_price_of_apples(apples: usize) -> usize {
|
||||||
|
if apples <= 40 { apples * 2 } else { apples }
|
||||||
|
}
|
||||||
|
|
||||||
// Don't modify this function!
|
// Don't modify this function!
|
||||||
#[test]
|
#[test]
|
||||||
|
|
|
@ -20,7 +20,6 @@
|
||||||
//
|
//
|
||||||
// No hints this time!
|
// No hints this time!
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
pub enum Command {
|
pub enum Command {
|
||||||
Uppercase,
|
Uppercase,
|
||||||
|
@ -32,11 +31,22 @@ mod my_module {
|
||||||
use super::Command;
|
use super::Command;
|
||||||
|
|
||||||
// TODO: Complete the function signature!
|
// TODO: Complete the function signature!
|
||||||
pub fn transformer(input: ???) -> ??? {
|
pub fn transformer(input: Vec<(String, Command)>) -> Vec<String> {
|
||||||
// TODO: Complete the output declaration!
|
// TODO: Complete the output declaration!
|
||||||
let mut output: ??? = vec![];
|
let mut output: Vec<String> = vec![];
|
||||||
for (string, command) in input.iter() {
|
for (string, command) in input.iter() {
|
||||||
// TODO: Complete the function body. You can do it!
|
// TODO: Complete the function body. You can do it!
|
||||||
|
match command {
|
||||||
|
Command::Uppercase => output.push(string.to_uppercase()),
|
||||||
|
Command::Trim => output.push(string.trim().to_string()),
|
||||||
|
Command::Append(i) =>{
|
||||||
|
let mut string = string.to_string();
|
||||||
|
for foo in 0..*i {
|
||||||
|
string += "bar";
|
||||||
|
}
|
||||||
|
output.push(string)
|
||||||
|
},
|
||||||
|
}
|
||||||
}
|
}
|
||||||
output
|
output
|
||||||
}
|
}
|
||||||
|
@ -45,7 +55,7 @@ mod my_module {
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
mod tests {
|
mod tests {
|
||||||
// TODO: What do we need to import to have `transformer` in scope?
|
// TODO: What do we need to import to have `transformer` in scope?
|
||||||
use ???;
|
use crate::my_module::transformer;
|
||||||
use super::Command;
|
use super::Command;
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
|
|
|
@ -16,15 +16,15 @@
|
||||||
//
|
//
|
||||||
// Execute `rustlings hint quiz3` or use the `hint` watch subcommand for a hint.
|
// Execute `rustlings hint quiz3` or use the `hint` watch subcommand for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
use std::fmt::Display;
|
||||||
|
|
||||||
pub struct ReportCard {
|
pub struct ReportCard<T> {
|
||||||
pub grade: f32,
|
pub grade: T,
|
||||||
pub student_name: String,
|
pub student_name: String,
|
||||||
pub student_age: u8,
|
pub student_age: u8,
|
||||||
}
|
}
|
||||||
|
|
||||||
impl ReportCard {
|
impl <T: Display> ReportCard<T> {
|
||||||
pub fn print(&self) -> String {
|
pub fn print(&self) -> String {
|
||||||
format!("{} ({}) - achieved a grade of {}",
|
format!("{} ({}) - achieved a grade of {}",
|
||||||
&self.student_name, &self.student_age, &self.grade)
|
&self.student_name, &self.student_age, &self.grade)
|
||||||
|
@ -52,7 +52,7 @@ mod tests {
|
||||||
fn generate_alphabetic_report_card() {
|
fn generate_alphabetic_report_card() {
|
||||||
// TODO: Make sure to change the grade here after you finish the exercise.
|
// TODO: Make sure to change the grade here after you finish the exercise.
|
||||||
let report_card = ReportCard {
|
let report_card = ReportCard {
|
||||||
grade: 2.1,
|
grade: "A+",
|
||||||
student_name: "Gary Plotter".to_string(),
|
student_name: "Gary Plotter".to_string(),
|
||||||
student_age: 11,
|
student_age: 11,
|
||||||
};
|
};
|
||||||
|
|
|
@ -5,7 +5,6 @@
|
||||||
// Execute `rustlings hint strings1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint strings1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let answer = current_favorite_color();
|
let answer = current_favorite_color();
|
||||||
|
@ -13,5 +12,5 @@ fn main() {
|
||||||
}
|
}
|
||||||
|
|
||||||
fn current_favorite_color() -> String {
|
fn current_favorite_color() -> String {
|
||||||
"blue"
|
"blue".to_string()
|
||||||
}
|
}
|
||||||
|
|
|
@ -5,11 +5,10 @@
|
||||||
// Execute `rustlings hint strings2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint strings2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let word = String::from("green"); // Try not changing this line :)
|
let word = String::from("green"); // Try not changing this line :)
|
||||||
if is_a_color_word(word) {
|
if is_a_color_word(&word) {
|
||||||
println!("That is a color word I know!");
|
println!("That is a color word I know!");
|
||||||
} else {
|
} else {
|
||||||
println!("That is not a color word I know.");
|
println!("That is not a color word I know.");
|
||||||
|
|
|
@ -3,21 +3,20 @@
|
||||||
// Execute `rustlings hint strings3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint strings3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn trim_me(input: &str) -> String {
|
fn trim_me(input: &str) -> String {
|
||||||
// TODO: Remove whitespace from both ends of a string!
|
// TODO: Remove whitespace from both ends of a string!
|
||||||
???
|
input.trim().to_string()
|
||||||
}
|
}
|
||||||
|
|
||||||
fn compose_me(input: &str) -> String {
|
fn compose_me(input: &str) -> String {
|
||||||
// TODO: Add " world!" to the string! There's multiple ways to do this!
|
// TODO: Add " world!" to the string! There's multiple ways to do this!
|
||||||
???
|
input.to_string() + " world!"
|
||||||
}
|
}
|
||||||
|
|
||||||
fn replace_me(input: &str) -> String {
|
fn replace_me(input: &str) -> String {
|
||||||
// TODO: Replace "cars" in the string with "balloons"!
|
// TODO: Replace "cars" in the string with "balloons"!
|
||||||
???
|
input.replace("cars", "balloons")
|
||||||
}
|
}
|
||||||
|
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
|
|
|
@ -7,7 +7,6 @@
|
||||||
//
|
//
|
||||||
// No hints this time!
|
// No hints this time!
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn string_slice(arg: &str) {
|
fn string_slice(arg: &str) {
|
||||||
println!("{}", arg);
|
println!("{}", arg);
|
||||||
|
@ -17,14 +16,14 @@ fn string(arg: String) {
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
???("blue");
|
string_slice("blue");
|
||||||
???("red".to_string());
|
string("red".to_string());
|
||||||
???(String::from("hi"));
|
string(String::from("hi"));
|
||||||
???("rust is fun!".to_owned());
|
string("rust is fun!".to_owned());
|
||||||
???("nice weather".into());
|
string_slice("nice weather".into());
|
||||||
???(format!("Interpolation {}", "Station"));
|
string(format!("Interpolation {}", "Station"));
|
||||||
???(&String::from("abc")[0..1]);
|
string_slice(&String::from("abc")[0..1]);
|
||||||
???(" hello there ".trim());
|
string_slice(" hello there ".trim());
|
||||||
???("Happy Monday!".to_string().replace("Mon", "Tues"));
|
string("Happy Monday!".to_string().replace("Mon", "Tues"));
|
||||||
???("mY sHiFt KeY iS sTiCkY".to_lowercase());
|
string("mY sHiFt KeY iS sTiCkY".to_lowercase());
|
||||||
}
|
}
|
||||||
|
|
|
@ -5,13 +5,14 @@
|
||||||
// Execute `rustlings hint structs1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint structs1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
struct ColorClassicStruct {
|
struct ColorClassicStruct {
|
||||||
// TODO: Something goes here
|
red: i32,
|
||||||
|
green: i32,
|
||||||
|
blue: i32,
|
||||||
}
|
}
|
||||||
|
|
||||||
struct ColorTupleStruct(/* TODO: Something goes here */);
|
struct ColorTupleStruct(i32, i32, i32);
|
||||||
|
|
||||||
#[derive(Debug)]
|
#[derive(Debug)]
|
||||||
struct UnitLikeStruct;
|
struct UnitLikeStruct;
|
||||||
|
@ -23,7 +24,10 @@ mod tests {
|
||||||
#[test]
|
#[test]
|
||||||
fn classic_c_structs() {
|
fn classic_c_structs() {
|
||||||
// TODO: Instantiate a classic c struct!
|
// TODO: Instantiate a classic c struct!
|
||||||
// let green =
|
let green = ColorClassicStruct{
|
||||||
|
red: 0,
|
||||||
|
green: 255,
|
||||||
|
blue: 0};
|
||||||
|
|
||||||
assert_eq!(green.red, 0);
|
assert_eq!(green.red, 0);
|
||||||
assert_eq!(green.green, 255);
|
assert_eq!(green.green, 255);
|
||||||
|
@ -33,7 +37,7 @@ mod tests {
|
||||||
#[test]
|
#[test]
|
||||||
fn tuple_structs() {
|
fn tuple_structs() {
|
||||||
// TODO: Instantiate a tuple struct!
|
// TODO: Instantiate a tuple struct!
|
||||||
// let green =
|
let green = ColorTupleStruct(0, 255, 0);
|
||||||
|
|
||||||
assert_eq!(green.0, 0);
|
assert_eq!(green.0, 0);
|
||||||
assert_eq!(green.1, 255);
|
assert_eq!(green.1, 255);
|
||||||
|
@ -43,7 +47,7 @@ mod tests {
|
||||||
#[test]
|
#[test]
|
||||||
fn unit_structs() {
|
fn unit_structs() {
|
||||||
// TODO: Instantiate a unit-like struct!
|
// TODO: Instantiate a unit-like struct!
|
||||||
// let unit_like_struct =
|
let unit_like_struct = UnitLikeStruct;
|
||||||
let message = format!("{:?}s are fun!", unit_like_struct);
|
let message = format!("{:?}s are fun!", unit_like_struct);
|
||||||
|
|
||||||
assert_eq!(message, "UnitLikeStructs are fun!");
|
assert_eq!(message, "UnitLikeStructs are fun!");
|
||||||
|
|
|
@ -5,7 +5,6 @@
|
||||||
// Execute `rustlings hint structs2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint structs2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[derive(Debug)]
|
#[derive(Debug)]
|
||||||
struct Order {
|
struct Order {
|
||||||
|
@ -38,7 +37,11 @@ mod tests {
|
||||||
fn your_order() {
|
fn your_order() {
|
||||||
let order_template = create_order_template();
|
let order_template = create_order_template();
|
||||||
// TODO: Create your own order using the update syntax and template above!
|
// TODO: Create your own order using the update syntax and template above!
|
||||||
// let your_order =
|
let your_order = Order {
|
||||||
|
name: String::from("Hacker in Rust"),
|
||||||
|
count: 1,
|
||||||
|
..order_template
|
||||||
|
};
|
||||||
assert_eq!(your_order.name, "Hacker in Rust");
|
assert_eq!(your_order.name, "Hacker in Rust");
|
||||||
assert_eq!(your_order.year, order_template.year);
|
assert_eq!(your_order.year, order_template.year);
|
||||||
assert_eq!(your_order.made_by_phone, order_template.made_by_phone);
|
assert_eq!(your_order.made_by_phone, order_template.made_by_phone);
|
||||||
|
|
|
@ -7,7 +7,6 @@
|
||||||
// Execute `rustlings hint structs3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint structs3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[derive(Debug)]
|
#[derive(Debug)]
|
||||||
struct Package {
|
struct Package {
|
||||||
|
@ -31,12 +30,14 @@ impl Package {
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
fn is_international(&self) -> ??? {
|
fn is_international(&self) -> bool {
|
||||||
// Something goes here...
|
if self.sender_country != self.recipient_country{
|
||||||
|
true
|
||||||
|
} else { false }
|
||||||
}
|
}
|
||||||
|
|
||||||
fn get_fees(&self, cents_per_gram: u32) -> ??? {
|
fn get_fees(&self, cents_per_gram: u32) -> u32 {
|
||||||
// Something goes here...
|
self.weight_in_grams * cents_per_gram
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -10,12 +10,11 @@
|
||||||
// Execute `rustlings hint tests1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint tests1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
mod tests {
|
mod tests {
|
||||||
#[test]
|
#[test]
|
||||||
fn you_can_assert() {
|
fn you_can_assert() {
|
||||||
assert!();
|
assert!(true);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
@ -6,12 +6,11 @@
|
||||||
// Execute `rustlings hint tests2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint tests2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
mod tests {
|
mod tests {
|
||||||
#[test]
|
#[test]
|
||||||
fn you_can_assert_eq() {
|
fn you_can_assert_eq() {
|
||||||
assert_eq!();
|
assert_eq!(1,1);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
@ -7,7 +7,6 @@
|
||||||
// Execute `rustlings hint tests3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint tests3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
pub fn is_even(num: i32) -> bool {
|
pub fn is_even(num: i32) -> bool {
|
||||||
num % 2 == 0
|
num % 2 == 0
|
||||||
|
@ -19,11 +18,11 @@ mod tests {
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn is_true_when_even() {
|
fn is_true_when_even() {
|
||||||
assert!();
|
assert!(is_even(2));
|
||||||
}
|
}
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn is_false_when_odd() {
|
fn is_false_when_odd() {
|
||||||
assert!();
|
assert!(!is_even(5));
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
@ -5,7 +5,6 @@
|
||||||
// Execute `rustlings hint tests4` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint tests4` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
struct Rectangle {
|
struct Rectangle {
|
||||||
width: i32,
|
width: i32,
|
||||||
|
@ -30,17 +29,19 @@ mod tests {
|
||||||
fn correct_width_and_height() {
|
fn correct_width_and_height() {
|
||||||
// This test should check if the rectangle is the size that we pass into its constructor
|
// This test should check if the rectangle is the size that we pass into its constructor
|
||||||
let rect = Rectangle::new(10, 20);
|
let rect = Rectangle::new(10, 20);
|
||||||
assert_eq!(???, 10); // check width
|
assert_eq!(rect.width, 10); // check width
|
||||||
assert_eq!(???, 20); // check height
|
assert_eq!(rect.height, 20); // check height
|
||||||
}
|
}
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
|
#[should_panic]
|
||||||
fn negative_width() {
|
fn negative_width() {
|
||||||
// This test should check if program panics when we try to create rectangle with negative width
|
// This test should check if program panics when we try to create rectangle with negative width
|
||||||
let _rect = Rectangle::new(-10, 10);
|
let _rect = Rectangle::new(-10, 10);
|
||||||
}
|
}
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
|
#[should_panic]
|
||||||
fn negative_height() {
|
fn negative_height() {
|
||||||
// This test should check if program panics when we try to create rectangle with negative height
|
// This test should check if program panics when we try to create rectangle with negative height
|
||||||
let _rect = Rectangle::new(10, -10);
|
let _rect = Rectangle::new(10, -10);
|
||||||
|
|
|
@ -7,7 +7,6 @@
|
||||||
// Execute `rustlings hint traits1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint traits1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
trait AppendBar {
|
trait AppendBar {
|
||||||
fn append_bar(self) -> Self;
|
fn append_bar(self) -> Self;
|
||||||
|
@ -15,6 +14,9 @@ trait AppendBar {
|
||||||
|
|
||||||
impl AppendBar for String {
|
impl AppendBar for String {
|
||||||
// TODO: Implement `AppendBar` for type `String`.
|
// TODO: Implement `AppendBar` for type `String`.
|
||||||
|
fn append_bar(self) -> Self {
|
||||||
|
format!("{self}Bar")
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
|
|
|
@ -8,13 +8,18 @@
|
||||||
//
|
//
|
||||||
// Execute `rustlings hint traits2` or use the `hint` watch subcommand for a hint.
|
// Execute `rustlings hint traits2` or use the `hint` watch subcommand for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
trait AppendBar {
|
trait AppendBar {
|
||||||
fn append_bar(self) -> Self;
|
fn append_bar(self) -> Self;
|
||||||
}
|
}
|
||||||
|
|
||||||
// TODO: Implement trait `AppendBar` for a vector of strings.
|
// TODO: Implement trait `AppendBar` for a vector of strings.
|
||||||
|
impl AppendBar for Vec<String> {
|
||||||
|
fn append_bar(mut self) -> Self {
|
||||||
|
self.push("Bar".to_string());
|
||||||
|
self
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
mod tests {
|
mod tests {
|
||||||
|
|
|
@ -8,10 +8,11 @@
|
||||||
// Execute `rustlings hint traits3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint traits3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
pub trait Licensed {
|
pub trait Licensed {
|
||||||
fn licensing_info(&self) -> String;
|
fn licensing_info(&self) -> String{
|
||||||
|
format!("Some information")
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
struct SomeSoftware {
|
struct SomeSoftware {
|
||||||
|
|
|
@ -7,7 +7,6 @@
|
||||||
// Execute `rustlings hint traits4` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint traits4` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
pub trait Licensed {
|
pub trait Licensed {
|
||||||
fn licensing_info(&self) -> String {
|
fn licensing_info(&self) -> String {
|
||||||
|
@ -23,7 +22,7 @@ impl Licensed for SomeSoftware {}
|
||||||
impl Licensed for OtherSoftware {}
|
impl Licensed for OtherSoftware {}
|
||||||
|
|
||||||
// YOU MAY ONLY CHANGE THE NEXT LINE
|
// YOU MAY ONLY CHANGE THE NEXT LINE
|
||||||
fn compare_license_types(software: ??, software_two: ??) -> bool {
|
fn compare_license_types <T: Licensed, U: Licensed>(software: T, software_two: U) -> bool {
|
||||||
software.licensing_info() == software_two.licensing_info()
|
software.licensing_info() == software_two.licensing_info()
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -7,7 +7,6 @@
|
||||||
// Execute `rustlings hint traits5` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint traits5` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
pub trait SomeTrait {
|
pub trait SomeTrait {
|
||||||
fn some_function(&self) -> bool {
|
fn some_function(&self) -> bool {
|
||||||
|
@ -30,7 +29,7 @@ impl SomeTrait for OtherStruct {}
|
||||||
impl OtherTrait for OtherStruct {}
|
impl OtherTrait for OtherStruct {}
|
||||||
|
|
||||||
// YOU MAY ONLY CHANGE THE NEXT LINE
|
// YOU MAY ONLY CHANGE THE NEXT LINE
|
||||||
fn some_func(item: ??) -> bool {
|
fn some_func<T: SomeTrait + OtherTrait>(item: T) -> bool {
|
||||||
item.some_function() && item.other_function()
|
item.some_function() && item.other_function()
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -5,9 +5,8 @@
|
||||||
// Execute `rustlings hint variables1` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint variables1` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
x = 5;
|
let x = 5;
|
||||||
println!("x has the value {}", x);
|
println!("x has the value {}", x);
|
||||||
}
|
}
|
||||||
|
|
|
@ -3,10 +3,9 @@
|
||||||
// Execute `rustlings hint variables2` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint variables2` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let x;
|
let x: isize = 10;
|
||||||
if x == 10 {
|
if x == 10 {
|
||||||
println!("x is ten!");
|
println!("x is ten!");
|
||||||
} else {
|
} else {
|
||||||
|
|
|
@ -3,9 +3,8 @@
|
||||||
// Execute `rustlings hint variables3` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint variables3` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let x: i32;
|
let x: i32 = 1;
|
||||||
println!("Number {}", x);
|
println!("Number {}", x);
|
||||||
}
|
}
|
||||||
|
|
|
@ -3,10 +3,9 @@
|
||||||
// Execute `rustlings hint variables4` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint variables4` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let x = 3;
|
let mut x = 3;
|
||||||
println!("Number {}", x);
|
println!("Number {}", x);
|
||||||
x = 5; // don't change this line
|
x = 5; // don't change this line
|
||||||
println!("Number {}", x);
|
println!("Number {}", x);
|
||||||
|
|
|
@ -3,11 +3,10 @@
|
||||||
// Execute `rustlings hint variables5` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint variables5` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
let number = "T-H-R-E-E"; // don't change this line
|
let number = "T-H-R-E-E"; // don't change this line
|
||||||
println!("Spell a Number : {}", number);
|
println!("Spell a Number : {}", number);
|
||||||
number = 3; // don't rename this variable
|
let number = 3; // don't rename this variable
|
||||||
println!("Number plus two is : {}", number + 2);
|
println!("Number plus two is : {}", number + 2);
|
||||||
}
|
}
|
||||||
|
|
|
@ -3,9 +3,8 @@
|
||||||
// Execute `rustlings hint variables6` or use the `hint` watch subcommand for a
|
// Execute `rustlings hint variables6` or use the `hint` watch subcommand for a
|
||||||
// hint.
|
// hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
const NUMBER = 3;
|
const NUMBER: isize = 3;
|
||||||
fn main() {
|
fn main() {
|
||||||
println!("Number {}", NUMBER);
|
println!("Number {}", NUMBER);
|
||||||
}
|
}
|
||||||
|
|
|
@ -7,12 +7,10 @@
|
||||||
//
|
//
|
||||||
// Execute `rustlings hint vecs1` or use the `hint` watch subcommand for a hint.
|
// Execute `rustlings hint vecs1` or use the `hint` watch subcommand for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn array_and_vec() -> ([i32; 4], Vec<i32>) {
|
fn array_and_vec() -> ([i32; 4], Vec<i32>) {
|
||||||
let a = [10, 20, 30, 40]; // a plain array
|
let a = [10, 20, 30, 40]; // a plain array
|
||||||
let v = // TODO: declare your vector here with the macro for vectors
|
let v: Vec<i32> = a.to_vec();
|
||||||
|
|
||||||
(a, v)
|
(a, v)
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -7,13 +7,12 @@
|
||||||
//
|
//
|
||||||
// Execute `rustlings hint vecs2` or use the `hint` watch subcommand for a hint.
|
// Execute `rustlings hint vecs2` or use the `hint` watch subcommand for a hint.
|
||||||
|
|
||||||
// I AM NOT DONE
|
|
||||||
|
|
||||||
fn vec_loop(mut v: Vec<i32>) -> Vec<i32> {
|
fn vec_loop(mut v: Vec<i32>) -> Vec<i32> {
|
||||||
for element in v.iter_mut() {
|
for element in v.iter_mut() {
|
||||||
// TODO: Fill this up so that each element in the Vec `v` is
|
// TODO: Fill this up so that each element in the Vec `v` is
|
||||||
// multiplied by 2.
|
// multiplied by 2.
|
||||||
???
|
*element *= 2;
|
||||||
}
|
}
|
||||||
|
|
||||||
// At this point, `v` should be equal to [4, 8, 12, 16, 20].
|
// At this point, `v` should be equal to [4, 8, 12, 16, 20].
|
||||||
|
@ -24,7 +23,7 @@ fn vec_map(v: &Vec<i32>) -> Vec<i32> {
|
||||||
v.iter().map(|element| {
|
v.iter().map(|element| {
|
||||||
// TODO: Do the same thing as above - but instead of mutating the
|
// TODO: Do the same thing as above - but instead of mutating the
|
||||||
// Vec, you can just return the new number!
|
// Vec, you can just return the new number!
|
||||||
???
|
2 * element
|
||||||
}).collect()
|
}).collect()
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue