Aer/tests/callback_function.aer

class Program {

	void main(string[] $args) {
		callback $y = void() {
			callback $a = 'printf';
			$a("I'm alive\n");
			var_dump($a);
		};
		$y();
		var_dump($y);
		string $a = 'printf';
		var_dump($a);
	}

}