Learning Rust and Lemmy

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A collaborative space for people to work together on learning Rust, learning about the Lemmy code base, discussing whatever confusions or difficulties we're having in these endeavours, and solving problems, including, hopefully, some contributions back to the Lemmy code base.

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Rust 101 - 4: Exercises for module A1 (diode.zone)

submitted 9 months ago by [email protected] to c/[email protected]

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cross-posted from: https://diode.zone/videos/watch/9766d1f1-6018-48ec-ad67-e971758f8a3a

Going through some exercises on basic Rust syntax and ownership.

Links:

Exercises: https://101-rs.tweede.golf/A1-language-basics/mod.html

Slides: http://artificialworlds.net/presentations/rust-101/A1-intro-to-rust

Rust 101 is a series of videos explaining how to write programs in Rust. The course materials for this series are developed by tweede golf. You can find more information at https://github.com/tweedegolf/101-rs and you can sponsor the work at https://github.com/sponsors/tweedegolf . They are released under the Creative Commons Attribution Share Alike 4.0 International license.

This series of videos is copyright 2023 Andy Balaam and the tweede golf contributors and is released under the Creative Commons Attribution Share Alike 4.0 International license.

These videos are roughly on track with the Reading Club apparently, so this video belongs here this week, I think.

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[–] [email protected] 3 points 9 months ago* (last edited 9 months ago) (1 children)

Shouldn't we be able to do something like

let bar : [f32; 5] = [Default::default(); 5];

I'm on mobile and too lazy to try whipping up a rust playground example to test this out myself.

[–] [email protected] 3 points 9 months ago* (last edited 9 months ago)

I'll do you one better!

let foo: [u8; 10] = Default::default();

(pretty sure the above only works reliably after they finally were able to derive traits on n-sized arrays but that's been in for a while now)

And as you suggested:

let foo: [u8; 10] = [Default::default(); 10];