Macro aoko::swap

macro_rules! swap {
    ($($a : ident, $b : ident) ; * $(;) ?) => { ... };
}

Swaps two variables’ value.

Principles

Shadowing by two immutable variables.

Examples

use aoko::swap;
 
let (a, b, c, d) = (1, 2, 3, 4);
swap!(a, b; c, d;);
assert_eq!((a, b, c, d), (2, 1, 4, 3));