let test = 2

& loop ([1, 2, 3]) with {
& 	([]) -> false
& 	([x]) -> eq? (x, test)
& 	([x, ...xs]) -> {
& 		let foo = :bar
& 		when {
& 			eq? (x, test) -> true
& 			:else -> recur (xs)
& 		}
& 	}
& }

fn not {
    (false) -> true
    (nil) -> true
    (_) -> false
}

loop ([1, 2, 3]) with {
	([]) -> false
	([x]) -> eq? (x, test)
	([x, ...xs]) -> if not (eq? (x, test))
		then recur (xs)
		else true
	
}