"test:main" {
	let x: score = val 7s;
	if eq %x, 7s: say "hello";
	let y: score = null;
	if exi %y:
		if not eq 5s, %y:
			set %x, 3s;

	ife pred "foo:bar" {
		say "True";
	} {
		say "False";
	};
}