macro_rules! swap_mut {
($($a:ident, $b:ident);* $(;)?) => { ... };
}
Expand description
Swaps two variables’ value.
Principles
Shadowing by two mutable variables.
Examples
use aoko::swap_mut;
let (a, b, c, d) = (1, 2, 3, 4);
swap_mut!(a, b; c, d;);
assert_eq!((a, b, c, d), (2, 1, 4, 3));
a = 10; b = 20; c = 30; d = 40;
assert_eq!((a, b, c, d), (10, 20, 30, 40));