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-Wall ain't all (lemmy.world)
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[-] Perroboc@lemmy.world 56 points 1 year ago

int unused_variable = 0;

Dude wtf is your problem don’t just leave things lying about there don’t you know how to code I mean what the- I don’t go to your house and leave shit on the floor and just—

int _unused_variable = 0;

Ok. We cool.

[-] lseif@sopuli.xyz 1 points 11 months ago

sometimes you need an unused variable. some uses in rust:

// destructuring
let (width, _height) = get_dimensions();

// trait implementations (i couldnt think of a better example for this)
impl Into for AlwaysZero {
    fn into(_value: Self) -> {
        return 0;
    }
}

// some types (eg. Result) must be 'used'
// assigned to a variable if we dont care about the return value
let _ = returns_result("foo");
this post was submitted on 13 Oct 2023
332 points (95.9% liked)

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