swap in core::mem - Rust
Description: Swaps the values at two mutable locations, without deinitializing either one.
Keywords: rust, rustlang, rust-lang, swap

# Function core::mem::swap
1.0.0[−][src]

    pub fn swap<T>(x: &mut T, y: &mut T)

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);

Run