Question

How to swap two values in Rust

Answer 1

fn main() {
    let a = 345;
    let b = 8;

    let (a, b) = (b, a);

    println!("a = {} b = {}", a, b);
}




/*
run:

a = 8 b = 345

*/

 

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Answer 2

fn main() {
    let mut a = 345;
    let mut b = 8;

    std::mem::swap(&mut a, &mut b);

    println!("a = {} b = {}", a, b);
}




/*
run:

a = 8 b = 345

*/

 

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