I've tried learning #rust via the Rust book, rust by example, O'reilly's rust. I've always bounced off. Just started #Rustlings and this is slick. I won't say I'll get through it all, but this is definitely more my style, attempting to #troubleshoot code. Poking around to learn what something like the r in the following line does:

println!(r" // ");

#rustLang #programming #learning

Continued thread

**Grégoire Locqueville** @glocq@mathstodon.xyz · Jan 15

Jan 15

Grégoire Locqueville @glocq@mathstodon.xyz

Ok here's a first question I encountered while working on the #rustlings :

When defining a function, what does it mean to put the `mut` keyword in front of the argument's *name* vs. in front the the argument's *type*? E.g. what's the difference between the following two lines:

```
fn some_function(mut some_arg: SomeType) {
fn some_function(some_arg: mut SomeType) {
```

#rust

**Feoh** @feoh@oldbytes.space · Dec 18, 2024

Dec 18, 2024

Feoh @feoh@oldbytes.space

I think maybe I need to put #rustlings aside for a bit and read up a bit more.

I'm hitting the point where I am perma-stumped on some of the exercises.

Like, I really don't understand map_err or why I would want it. The examples aren't making much sense yet.

Not giving up, just changing tactics :)

My latest sticking point:

https://github.com/rust-lang/rustlings/blob/main/exercises/13_error_handling/errors6.rs

GitHubrustlings/exercises/13_error_handling/errors6.rs at main · rust-lang/rustlings:crab: Small exercises to get you used to reading and writing Rust code! - rust-lang/rustlings

**Kimimaru** @Kimimaru@mastodon.gamedev.place · Dec 15, 2024

Dec 15, 2024

Kimimaru @Kimimaru@mastodon.gamedev.place

I've really been enjoying learning #rust with #rustlings! I'm 2/3 of the way through so far. Major props to the Rust community for such a nice tutorial. I learn better by example, and I love how it even links to the relevant sections of the online book.

#coding #programming #freesoftware

**TrannusAran** @pinjontall@sfba.social · Dec 7, 2024

Dec 7, 2024

TrannusAran @pinjontall@sfba.social

Hey, if any of y'all are interested in learning #C, I made a project in the spirit of #rustlings and #ziglings: Ceilings! It's still a WIP, but if you know #cprogramming, and there are any improvements to be made, pls open an issue (or better yet, fork)! I'm making the exercises as I learn C myself, following along with my old copy of K&R and a PDF of C Programming: A Modern Approach

https://github.com/Pinjontall94/ceilings

GitHubGitHub - Pinjontall94/ceilings: Ceilings - Rustlings and Ziglings for C!Ceilings - Rustlings and Ziglings for C! Contribute to Pinjontall94/ceilings development by creating an account on GitHub.

**Paweł Szczur** @pawelszczur@pol.social · Nov 22, 2024 *

Nov 22, 2024 *

Paweł Szczur @pawelszczur@pol.social

I've finally made it, started learning Rust, read most of the book and finished rustlings.

Now looking around for interesting projects to quickly ramp up my skill ;-)

I had few approaches to Rust but never enough space to master it. But now it looks that a lot of work in a space i'm good at (data processing and databases) is written in Rust. E.g. #ParadeDB or #NeonDB they're both written in it.

#rust #rustlang #rustlings

**Depleted Veteran** @sgtnasty@mastodon.social · Nov 4, 2024

Nov 4, 2024

Depleted Veteran @sgtnasty@mastodon.social

Anyone who has finished the #rustlings course for #rust language, I have an open question on the discourse board that I could really use an explanation for
https://users.rust-lang.org/t/lost-on-how-to-proceed-with-rustlings-exercise-on-errors/120703

Rust · Nov 4, 2024Lost on how to proceed with rustlings exercise on errorsIm lost here how to fix this to pass the test. I am not even sure how to phrase the question. fn parse(s: &str) -> Result<Self, ParsePosNonzeroError> { // TODO: change this to return an appropriate error instead of panicking // when `parse()` returns an error. let x: i64 = s.parse().unwrap(); Self::new(x).map_err(ParsePosNonzeroError::from_creation) } This is the test result: thread 'test::test_parse_error' panicked at exercises/13_error_handling/errors...

**galvao|galvaoetibr@bsky.social** @galvao@phpc.social · Aug 7, 2024

Aug 7, 2024

galvao|galvaoetibr@bsky.social @galvao@phpc.social

Current Status: Literally reading the book on #rust

* Selecting interesting/relevant parts;
* Exporting them as Joplin notes via it's web clipper[1];
* Doing code examples

#todo solve more #rustlings exercises (solved a few already)

[1] Will eventually compile and organize my notes and share them on my Github

**Mo Bitar** @mo8it@fosstodon.org · Jul 23, 2024

Jul 23, 2024

Mo Bitar @mo8it@fosstodon.org

Free #Rust Course in Mainz, Germany

I am happy to announce that I will offer my Rust course for the third time

Where: In person at the university of Mainz #JGUMainz
When: 26.08. - 30.08.2024 from 10 until 17 o'clock
️ Content: My modified version of #ComprehensiveRust and #Rustlings: https://comprehensive-rust.mo8it.com
More info and free registration: https://fachschaft.physik.uni-mainz.de/rust (scroll down for the English version)
Language: English