2dc93cadda
fix(from_str, try_from_into): custom error types
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Remove the use of trait objects as errors from `from_str` and
`try_from_into`; they seem to have caused a lot of confusion in
practice. (Also, it's considered best practice to use custom error
types instead of boxed errors in library code.) Instead, use custom
error enums, and update hints accordingly. Hints also provide
some guidance about converting errors, which could be covered
more completely in a future advanced errors section.
Also move from_str to directly after the similar exercise `from_into`,
for the sake of familiarity when solving.
2021-06-24 21:33:41 -05:00
a3ea37b76e
Merge pull request #771 from tlyu/iterators5-trait-tweak
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fix(iterators5): derive Clone, Copy
2021-06-24 14:17:05 +02:00
ec63cadadb
Merge pull request #772 from tlyu/errors-rework
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feature: improve error_handling exercises
2021-06-24 14:12:34 +02:00
b7ddd09fab
address review feedback
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Adjust error text and naming to conform with best practices.
Use `map_err()` instead of `or()`. Wrap lower-level errors instead of
ignoring their details.
Also, don't "cheat" by bypassing the `new()` function in tests.
Fix a dangling reference in the try_from_into hints.
2021-06-09 23:27:53 -05:00
48ffcbd2c4
fix(variables5): confine the answer further
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let mut number = 3; can lead to a correct answer, so the comment helps to direct the users to the intended answer.
2021-06-07 18:22:55 +08:00
68d3ac567c
feature: improve error_handling exercises
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Add new exercises errors5 and errors6, to introduce boxed errors and
custom error enums more gently. Delete errorsn, because it tried to do
too much too soon.
2021-06-06 23:08:57 -05:00
50ab289da6
fix: rename result1 to errors4
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Also put it in the ERROR HANDLING section where it probably belongs.
2021-06-06 23:08:54 -05:00
91fc9e3118
fix(iterators5): derive Clone, Copy
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To allow more flexibility in solutions, derive `Clone` and `Copy`
for `Progress`.
2021-06-06 17:38:02 -05:00
1b85828548
fix: move_semantics5 hints
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Improve the hints for move_semantics5, as well as the explanatory
comments in the code.
Previously, it was not clear what possible changes were allowed.
It seems that reordering the statements might be the intended solution.
The previous comment about not "adding newlines" doesn't make sense,
so treating it as "adding new lines" makes it more clear.
2021-05-22 22:09:58 -05:00
399ab328d8
feat: Add move_semantics5 exercise. ( #746 )
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* feat: Add move_semantics5 exercise.
* feat: Add option3 exercise
* Address review comments. Fix typos, sentence formatting.
* Remove unwanted newline.
* Address review comments: make comment inline, fix format in print.
2021-05-17 14:10:40 +02:00
4d4fa77459
fix: remove trailing whitespaces from iterators1
2021-05-12 10:20:07 -05:00
3145794084
fix: add hints to generics1 and generics2 exercises
2021-05-11 14:50:05 -05:00
d9b69bd1a0
fix: remove trailing whitespace
2021-05-09 17:58:54 -05:00
9569c9a9e7
style(standard_library_types): stray line break
2021-04-29 23:31:26 +02:00
650b1dee54
chore: Update quiz1.rs add explicit test for 40
2021-04-25 19:02:50 +02:00
249ad44cc0
docs(exercises): updated all exercises readme files
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all exercises readme files now have a unified structure and a description
2021-04-23 19:54:31 +02:00
54804e344d
Merge pull request #721 from Zerotask/add-further-help-for-generics3
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docs(generics): add bounds help
2021-04-23 15:05:00 +02:00
f253103a31
docs(generics): add bounds help
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add help for bounds provided by the rust by example book
2021-04-22 22:11:04 +02:00
1120db57a6
docs(errors): add additional help for Result/Boxing
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add additional help information provided by the rust by example book
2021-04-22 21:32:29 +02:00
81be404487
feat(arc1): Add more details to description and hint ( #710 )
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Co-authored-by: bmacer <bmacer@cisco.com>
Co-authored-by: marisa <mokou@fastmail.com>
Co-authored-by: Roberto Vidal <vidal.roberto.j@gmail.com>
2021-04-21 14:50:03 +02:00
79cc657917
Merge pull request #646 from apogeeoak/iterator
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Added iterators5.rs exercise.
2021-04-21 10:10:50 +02:00
9c88ea9126
Improved iterators5.rs explanation.
2021-04-20 18:55:04 -04:00
2b766ef9f9
Merge pull request #648 from apogeeoak/iterator2
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Moved iterators2.rs errors out of tests.
2021-04-20 11:24:10 +02:00
bd3d9ac9d5
Merge pull request #649 from apogeeoak/iterator3
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Enabled iterators3.rs to run without commented out tests.
2021-04-20 11:22:39 +02:00
6bd791f2f4
fix(structs): Add 5.3 to structs/README ( #652 )
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Co-authored-by: Shao Yang Hong <shaoyang.hong@ninjavan.co>
2021-04-20 11:19:24 +02:00
b4de659438
fix(option2): Rename uninformative variables ( #675 )
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Renaming uninformative names like `optional_value`, `value`, `optional_values_vec` and `value` helps users distinguish between the two parts of the task.
2021-04-20 11:18:05 +02:00
72aaa15e6a
fix(hashmap2): Update incorrect assertion ( #660 )
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The test description says "at least five types of fruit", but the test itself is checking for exactly five types of fruit, which was a bit misleading for newcomers like me :)
A simple change from "==" to ">=" should do the trick and successfully check for the "at least" condition.
2021-04-20 11:15:49 +02:00
f2ad3a6a0b
Merge pull request #697 from WowSuchRicky/main
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Rename 'Lichi' to 'Lychee' in the fruit example
2021-04-13 10:40:07 -04:00
caf921a01f
Merge pull request #674 from Morsicus/fix/collections-exercises-naming
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Update collections exercises naming
2021-04-13 10:39:18 -04:00
b790bafc02
Rename lichi to lychee in the fruit example
2021-04-09 14:08:02 -07:00
c3e7b83178
fix: use trait objects for from_str
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Use `Box<dyn error::Error>` to allow solutions to use `?` to propagate
errors.
2021-04-04 18:56:10 -05:00
2e93a588e0
fix: use trait objects for try_from_into
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Use `Box<dyn error::Error>` to allow solutions to use `?` to propagate
errors. In the tests, explicitly check `is_ok()` instead of trying to
force the error type to `String` (or other `PartialEq` type) using
`assert_eq!()`.
2021-04-04 12:41:32 -05:00
a6509cc4d5
fix(functions3): improve function argument type ( #687 )
2021-04-04 09:43:25 +02:00
3df094713f
chore: capitalize `c` letter
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By capitalizing the `c` letter it makes clear that we're talking about the C programming language.
2021-03-20 21:12:49 +01:00
ab9995e76e
doc: Update collections exercises instruction to match the standard naming
2021-03-18 19:11:15 +01:00
bef39b1259
fix(collections): Naming exercises for vectors and hashmap
2021-03-18 19:11:04 +01:00
0d894e6ff7
fix(quiz3): Force an answer to Q2 ( #672 )
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Add also an example of unimplemented!() macro.
2021-03-16 10:14:25 +01:00
3bce2ef8d6
chore: clarify collections documentation
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C++ `map` is more like BTreeMap.
`unordered_map` in C++(11) is the equivalent of `HashMap` in Rust.
(+ additional like for references).
2021-03-15 09:14:12 +01:00
9f3e8c2dde
fix(structs3): reword heading comment ( #664 )
2021-03-13 12:14:02 +01:00
05a753fe63
fix: add check to prevent naive implementation of is_international
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* fix(structs3): Add check to prevent naive implementation
* chore(structs3): Add a missed newline after the test I added
2021-03-12 18:36:35 +01:00
5f7c89f85d
fix(from_str): Correct typos
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typos in the comments
2021-02-21 21:50:17 +01:00
c6712dfccd
fix(iterators3): Enabled iterators3.rs to run without commented out tests.
2021-02-12 15:36:53 -05:00
baf4ba175b
fix(iterators2): Moved errors out of tests.
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Closes #359
2021-02-11 21:24:32 -05:00
b29ea17ea9
feat: Added iterators5.rs exercise.
2021-02-10 18:03:29 -05:00
cc266d7d80
fix(move_semantics4): Remove redundant "instead" ( #640 )
2021-02-07 12:22:13 +01:00
15e71535f3
fix(from_str): test for error instead of unwrap/should_panic
2021-01-21 07:55:22 -05:00
4f1374a6e7
feat(from_into) : add test for checking unnecessary trailing value
2021-01-09 00:08:38 +09:00
5a0521e92c
feat(from_str) : add test for checking unnecessary trailing value
2021-01-09 00:07:13 +09:00
7857b0a689
fix(threads1): line number correction
2021-01-06 13:47:20 +01:00
10965920fb
fix(move_semantics4): Small readbility improvement ( #617 )
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* Small readbility improvement move_semantics4 doc
* Remove `an` as it refers to the argument
2021-01-06 10:12:33 +01:00
Taylor Yu
marisa
ZC
Sateesh
Juan Pablo Ramirez
Pi Delport
Maarten Tibau
Zerotask
Brandon Macer
apogeeoak
Shao Yang Hong
k12ish
Pete Pavlovski
Abdou Seck
WowSuchRicky
Ignacio Le Fluk
Rod Elias
Mickael Fortunato
Pascal H
Darius Wiles
cadolphs
Jirka Kremser
Tal
Jean-Francois Chevrette
Sang-Heon Jeon
Christian Zeller
Marius Ungureanu