====== swap() ======
''any, any swap(any a, any b)''

[[new:multiple_return_values|Returns two variables]] in reverse order. This function exists to improve readability when swapping the values of two variables.

==== Examples ====
Without ''swap()'':
<code>
int tmp = x;
x = y;
y = tmp;
</code>

With ''swap()'':
<code>
swap(x, y);
x = r1;
y = r2;
</code>