pub fn swap<T>(x: &mut T, y: &mut T)
Available on crate feature
std
only.Expand description
Swaps the values at two mutable locations, without deinitializing either one.
- If you want to swap with a default or dummy value, see
take
. - If you want to swap with a passed value, returning the old value, see
replace
.
§Examples
use std::mem;
let mut x = 5;
let mut y = 42;
mem::swap(&mut x, &mut y);
assert_eq!(42, x);
assert_eq!(5, y);