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Author SHA1 Message Date
frogtd
d75759e829
fix(move_semantics5): change &mut *y to &mut x (#814) 
Instead of having to explain why 
```rs
let mut x = 100; 
let y = &mut x;
let mut z_owned = *y;
let z = &mut z_owned;
*y += 100;
*z += 1000;
```
and 
```rs
let mut x = 100; 
let y = &mut x;
let z = &mut *y;
*y += 100;
*z += 1000;
```
are different, you still get the point across about having only one mutable reference.
As it stands, this exercise does too much (dereferencing and having only one mutable reference), and by doing so confuses people.

Example of someone being confused by this:
<https://discord.com/channels/273534239310479360/273541522815713281/872689531428692040>
 2021-09-25 10:52:18 +02:00
Weilet
0a11bad714
feat(quiz1): add default function name in comment (#838) 2021-09-21 10:43:44 +02:00
granddaifuku
1c3beb0a59
fix(modules2): fix typo (#835) 2021-09-06 16:32:39 +02:00
anuk909
dfd2fab4f3
feat(modules): update exercises, add modules3 (#822) 
Co-authored-by: diannasoriel <mokou@fastmail.com>
 2021-09-03 10:41:12 +02:00
diannasoriel
96fc301764
chore(quiz1): revert wording 2021-08-26 10:30:18 +02:00
Damian
03131a3d35
fix(quiz1): Fix inconsistent wording (#826) 
The second test expects the function to return 80 when there is an order of 40 apples, but the current wording implies returning 40 will pass as well
 2021-08-24 10:48:51 +02:00
ana
df25684cb7 fix(move_semantics5): Clarify instructions 2021-07-29 12:37:15 +02:00
fmoko
8e313cffaa
Merge pull request #732 from apogeeoak/iterators5 
chore(iterators5): Minor formatting improvements.
 2021-07-09 12:24:42 +02:00
fmoko
6948905716
Merge pull request #737 from ghost/correct-small-typo 
Correct small typo in exercises/conversions/from_str.rs
 2021-07-08 11:07:21 +02:00
Rakshit Sinha
d876649616
fix(quiz1): Updated question description (#794) 
Co-authored-by: Rakshit Sinha <rakshit.sinha@oracle.com>
 2021-07-07 22:18:33 +02:00
lauralindzey
8774e47dc3
docs: Update collections README with HashMap link 2021-07-06 01:31:27 -07:00
Laura Lindzey
e422ab1507 docs: Update exercise to chapter mapping for HashMap 2021-07-05 23:07:34 -07:00
Taylor Yu
2dc93cadda fix(from_str, try_from_into): custom error types 
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
marisa
a3ea37b76e
Merge pull request #771 from tlyu/iterators5-trait-tweak 
fix(iterators5): derive Clone, Copy
 2021-06-24 14:17:05 +02:00
marisa
ec63cadadb
Merge pull request #772 from tlyu/errors-rework 
feature: improve error_handling exercises
 2021-06-24 14:12:34 +02:00
Taylor Yu
b7ddd09fab address review feedback 
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
ZC
48ffcbd2c4
fix(variables5): confine the answer further 
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
Taylor Yu
68d3ac567c feature: improve error_handling exercises 
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
Taylor Yu
50ab289da6 fix: rename result1 to errors4 
Also put it in the ERROR HANDLING section where it probably belongs.
 2021-06-06 23:08:54 -05:00
Taylor Yu
91fc9e3118 fix(iterators5): derive Clone, Copy 
To allow more flexibility in solutions, derive `Clone` and `Copy`
for `Progress`.
 2021-06-06 17:38:02 -05:00
Taylor Yu
1b85828548 fix: move_semantics5 hints 
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
Sateesh
399ab328d8
feat: Add move_semantics5 exercise. (#746) 
* 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
Juan Pablo Ramirez
4d4fa77459 fix: remove trailing whitespaces from iterators1 2021-05-12 10:20:07 -05:00
Juan Pablo Ramirez
3145794084 fix: add hints to generics1 and generics2 exercises 2021-05-11 14:50:05 -05:00
Juan Pablo Ramirez
d9b69bd1a0 fix: remove trailing whitespace 2021-05-09 17:58:54 -05:00
Pi Delport
9569c9a9e7
style(standard_library_types): stray line break 2021-04-29 23:31:26 +02:00
Martin HART
86cc85295a fix: Correct small typo in exercises/conversions/from_str.rs 2021-04-27 21:11:40 +02:00
apogeeoak
9b8de65525
fix(intro1): Add compiler error explanation. 2021-04-26 20:28:17 -04:00
Maarten Tibau
650b1dee54
chore: Update quiz1.rs add explicit test for 40 2021-04-25 19:02:50 +02:00
apogeeoak
21c9f44168 feat(intro): Add intro section. 2021-04-24 13:15:34 -04:00
apogeeoak
7f0d2c2bf0 chore(iterators5): Minor formatting improvements. 2021-04-24 12:42:06 -04:00
Zerotask
4a384cae4a
docs(option): improve further information 2021-04-24 12:12:49 +02:00
Zerotask
249ad44cc0
docs(exercises): updated all exercises readme files 
all exercises readme files now have a unified structure and a description
 2021-04-23 19:54:31 +02:00
marisa
54804e344d
Merge pull request #721 from Zerotask/add-further-help-for-generics3 
docs(generics): add bounds help
 2021-04-23 15:05:00 +02:00
Zerotask
f253103a31
docs(generics): add bounds help 
add help for bounds provided by the rust by example book
 2021-04-22 22:11:04 +02:00
Zerotask
1120db57a6
docs(errors): add additional help for Result/Boxing 
add additional help information provided by the rust by example book
 2021-04-22 21:32:29 +02:00
Brandon Macer
81be404487
feat(arc1): Add more details to description and hint (#710) 
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
marisa
79cc657917
Merge pull request #646 from apogeeoak/iterator 
Added iterators5.rs exercise.
 2021-04-21 10:10:50 +02:00
apogeeoak
9c88ea9126 Improved iterators5.rs explanation. 2021-04-20 18:55:04 -04:00
marisa
2b766ef9f9
Merge pull request #648 from apogeeoak/iterator2 
Moved iterators2.rs errors out of tests.
 2021-04-20 11:24:10 +02:00
marisa
bd3d9ac9d5
Merge pull request #649 from apogeeoak/iterator3 
Enabled iterators3.rs to run without commented out tests.
 2021-04-20 11:22:39 +02:00
Shao Yang Hong
6bd791f2f4
fix(structs): Add 5.3 to structs/README (#652) 
Co-authored-by: Shao Yang Hong <shaoyang.hong@ninjavan.co>
 2021-04-20 11:19:24 +02:00
k12ish
b4de659438
fix(option2): Rename uninformative variables (#675) 
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
Pete Pavlovski
72aaa15e6a
fix(hashmap2): Update incorrect assertion (#660) 
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
Abdou Seck
f2ad3a6a0b
Merge pull request #697 from WowSuchRicky/main 
Rename 'Lichi' to 'Lychee' in the fruit example
 2021-04-13 10:40:07 -04:00
Abdou Seck
caf921a01f
Merge pull request #674 from Morsicus/fix/collections-exercises-naming 
Update collections exercises naming
 2021-04-13 10:39:18 -04:00
WowSuchRicky
b790bafc02 Rename lichi to lychee in the fruit example 2021-04-09 14:08:02 -07:00
Taylor Yu
c3e7b83178 fix: use trait objects for from_str 
Use `Box<dyn error::Error>` to allow solutions to use `?` to propagate 
errors.
 2021-04-04 18:56:10 -05:00
Taylor Yu
2e93a588e0 fix: use trait objects for try_from_into 
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
Ignacio Le Fluk
a6509cc4d5
fix(functions3): improve function argument type (#687) 2021-04-04 09:43:25 +02:00
Rod Elias
3df094713f
chore: capitalize c letter 
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
Mickael Fortunato
ab9995e76e doc: Update collections exercises instruction to match the standard naming 2021-03-18 19:11:15 +01:00
Mickael Fortunato
bef39b1259 fix(collections): Naming exercises for vectors and hashmap 2021-03-18 19:11:04 +01:00
Pascal H
0d894e6ff7
fix(quiz3): Force an answer to Q2 (#672) 
Add also an example of unimplemented!() macro.
 2021-03-16 10:14:25 +01:00
Pascal H
3bce2ef8d6
chore: clarify collections documentation 
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
Darius Wiles
9f3e8c2dde
fix(structs3): reword heading comment (#664) 2021-03-13 12:14:02 +01:00
cadolphs
05a753fe63
fix: add check to prevent naive implementation of is_international 
* 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
Jirka Kremser
5f7c89f85d
fix(from_str): Correct typos 
typos in the comments
 2021-02-21 21:50:17 +01:00
apogeeoak
c6712dfccd fix(iterators3): Enabled iterators3.rs to run without commented out tests. 2021-02-12 15:36:53 -05:00
apogeeoak
baf4ba175b fix(iterators2): Moved errors out of tests. 
Closes #359
 2021-02-11 21:24:32 -05:00
apogeeoak
b29ea17ea9 feat: Added iterators5.rs exercise. 2021-02-10 18:03:29 -05:00
Tal
cc266d7d80
fix(move_semantics4): Remove redundant "instead" (#640) 2021-02-07 12:22:13 +01:00
Jean-Francois Chevrette
15e71535f3 fix(from_str): test for error instead of unwrap/should_panic 2021-01-21 07:55:22 -05:00
Sang-Heon Jeon
4f1374a6e7 feat(from_into) : add test for checking unnecessary trailing value 2021-01-09 00:08:38 +09:00
Sang-Heon Jeon
5a0521e92c feat(from_str) : add test for checking unnecessary trailing value 2021-01-09 00:07:13 +09:00
Christian Zeller
7857b0a689
fix(threads1): line number correction 2021-01-06 13:47:20 +01:00
Marius Ungureanu
10965920fb
fix(move_semantics4): Small readbility improvement (#617) 
* Small readbility improvement move_semantics4 doc

* Remove `an` as it refers to the argument
 2021-01-06 10:12:33 +01:00
Axel Viala
0ef95947cc
fix(functions2): Change signature to trigger precise error message: (#605) 
Now trigger this error:
```
error: expected type, found `)`
  --> exercises/functions/functions2.rs:10:16
   |
10 | fn call_me(num:) {
   |                ^ expected type

```
 2020-12-27 12:36:38 +01:00
seancad
bcf14cf677
fix: update structs README 2020-12-15 08:32:46 +01:00
JuliaCao
90cfb6ff28 fix: added missing exercises to info.toml 2020-12-12 10:34:59 -08:00
Peter N
30644c9a06
fix: gives a bit more context to magic number 2020-12-08 10:08:25 +01:00
JuliaCao
033bf1198f
feat: match exercise order to book chapters (#541) 
Added exercise to book chapter mapping table to exercise README
 2020-12-07 15:37:19 +01:00
fmoko
cdc7d92e57
Merge pull request #592 from tinkhauser/vec1_bugfix 
fix(vec1): Have test compare every element in a and v
 2020-12-06 15:09:45 +01:00
Christos Kontas
04f1d079aa feat(try_from_into): remove duplicate annotation 2020-12-03 17:51:30 +01:00
Jacob Tinkhauser
9b6c629397
fix(vec1): Have test compare every element in a and v 
The previous test would stop comparing elements in array a and vec v upon reaching the last element of either. This resulted in the test passing even if v did not contain all the elements in a. This change to the test fixes that bug and should only pass if all the elements in a and v are present and equal.
 2020-11-29 01:35:14 +00:00
Wei Hu
4f4cfcf3c3 fix(try_from_into): type error 2020-11-11 21:02:00 -08:00
JP
96347df9df
fix(try_from_into): Update description (#584) 
Description update
 2020-11-08 19:30:40 +01:00
fiplox
95ccd92616
feat(try_from_into): Add tests (#571) 
Co-authored-by: Volodymyr Patuta <6977238-fiplox@users.noreply.gitlab.com>
 2020-11-07 14:01:39 +01:00
JP
197d3a3d89
fix(iterators2): Update description (#578) 
grammar fix in the description
 2020-11-07 13:54:14 +01:00
sazid
633c00cf80 feat: Add HashMap exercises 2020-10-31 01:11:04 +06:00
sazid
0c12fa31c5 feat: Add Vec exercises 2020-10-31 01:10:49 +06:00
Matthew Smillie
472d8592d6 fix(primitive_types6): remove 'unused doc comment' warning 2020-10-13 23:20:17 -07:00
Matthew Smillie
4fb230daf1 fix(primitive_types6): missing comma in test 2020-10-13 23:18:41 -07:00
Axel Viala
2b1fb2b739
feat(primitive_types6): Add a test (#548) 
Co-authored-by: Annika <56906084+AnnikaCodes@users.noreply.github.com>
Co-authored-by: fmoko <mokou@posteo.de>
 2020-10-10 16:04:19 +02:00
Ryan McQuen
18e0bfef1d
fix(quiz3): Second test is for odd numbers, not even. (#553) 2020-10-10 13:11:57 +02:00
fmoko
69fc9ce10e
Merge pull request #545 from YJDoc2/main 2020-10-01 12:17:05 +02:00
Yashodhan Joshi
2ec0bdfd99 fix(variables5) : make shadowing more prominent 
closes #375
 2020-10-01 08:31:42 +05:30
fmoko
2a682abeef
Merge pull request #522 from calvinbrown085/adding-test-for-false-case 2020-09-27 17:05:42 +02:00
Greg Leonard
2933f51949
chore: Change point to comma in from_into.rs 
A typo in the fn test_bad_age() hint message had a point rather than comma

Prev:
// Test that "Mark.twenty"

Current:
// Test that "Mark,twenty"
 2020-09-25 13:39:52 +02:00
Calvin Brown
bec97b6c76
Fixing test3 to have enough tests to make sure we test all cases 2020-09-21 15:23:19 -05:00
Jannek Squar
114b54cbdb
fix(structs3): Small adjustment of variable name 
Co-authored-by: Jannek <squar@informatik.uni-hamburg.de>
 2020-09-19 21:22:56 +02:00
fmoko
0f16463794
Merge pull request #489 from mukundbhudia/iterators1 2020-09-18 15:23:28 +02:00
Ryan McQuen
3286c5ec19
fix(using_as): Add test so that proper type is returned. (#512) 2020-09-07 19:09:27 +02:00
Koalab99
ee7cdc66b3
chore: Removed extra whitespaces 
Co-authored-by: Corentin ARNOULD <corentin.arn@gmail.com>
 2020-08-27 19:51:19 +02:00
Samuel Batista
6bb0b48b10
Make macros4 not compile by default 
Did you mean this? I'm new to rust and this test passed right away, so unsure what the intention was.
 2020-08-26 22:17:03 -04:00
Antoine Barthelemy
101072ab9f fix(exercises): adding question mark to quiz2 
Question marks added for consistency.

closes #496
 2020-08-25 16:38:41 +02:00
John Heath
dd54ccf677
Make comments on example clearer 
I actually struggled because I overlooked the fact that I needed to change the 2.1 to "A+". 

So I wanted to make things clearer for future rustlings.
 2020-08-24 22:37:31 +01:00
seeplusplus
b4062ef699 fix(arc1): index mod should equal thread count 2020-08-16 20:55:50 -04:00
Étienne Barrié
3144d3ae63 chore: Run rustfmt on exercises 2020-08-10 10:24:21 -04:00
Mukund Bhudia
9642f5a3f6 feat: Added iterators1.rs exercise 2020-08-04 12:57:01 +01:00