this post was submitted on 08 Mar 2025
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Rust Programming

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Which is faster? (lemmings.world)
submitted 1 week ago* (last edited 1 week ago) by [email protected] to c/[email protected]
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let mut variable: Type;
loop {
    variable = value;
}

or

loop {
    let variable: Type = value;
}
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[–] [email protected] 2 points 1 week ago

Without context, there's no reason to compare the performance of these. The compiler is complex enough that what you do in the loop and after the loop matters with regards to optimizations.

Do you have more context? What's actually happening in the code?