# Swap function with call-by-pointer
fp.swap = ($[aPtr], $[bPtr]) -> {
	$tmp = $*aPtr
	$*aPtr = $*bPtr
	$*bPtr = $tmp
}

$a = 42
$b = A short text

fn.println($a, $b)

fp.swap($a, $b)

fn.println($a, $b)