Person = {name: String, age: int, sayHello: Callable};

fun newPerson(name: String, age: int)
	return {
		name: name, 
		age: age,
		fun sayHello(self)
			print("Hello from ", self.name, "!\n");
	};

me = newPerson("Francesco", 24);
me->sayHello();

assert(istypeof(Person, me));