submitted 4 months ago by azdle@news.idlestate.org to c/rust@programming.dev

25 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[-] TehPers@beehaw.org 1 points 3 months ago

That's not an alternative, it's removing let-else entirely. It's equivalent to this:

let i = if let Some(i) = opt_number {
    i
} else {
    return 0;
};

let-else is specifically a feature that allows you to use a refutable pattern to deconstruct a value by providing a diverging else branch.

[-] soc@programming.dev 1 points 3 months ago* (last edited 3 months ago)

Removing let-else is the whole point of the linked article series:

Being able to do to everything Rust does, but without Rust's zoo of if-then-else, match, if-let, let-else etc.

this post was submitted on 01 Sep 2025

31 points (94.3% liked)

Rust

7634 readers

128 users here now

Welcome to the Rust community! This is a place to discuss about the Rust programming language.

Credits

The icon is a modified version of the official rust logo (changing the colors to a gradient and black background)

founded 2 years ago

MODERATORS