class Foo {
	public void f () {
		stdout.printf ("Hello, world!\n");
	}
}

Foo? newf () {
	return new Foo ();
}

void fff (string [] s) {
	stdout.printf ("%s\n", s[0]);
}

class AA11 {
	public enum Enum1 {
		E1 = 1,
		E2 = 2
	}

	public uint i;
	public string s { get; set; default = "AA11"; }
	public Enum1 enum1 { get; set; default = Enum1.E2; }
}

class BB11 {
	public AA11 aa11 = new AA11 ();
	public List<int> list = new List<int> ();
	public Node<int> node = new Node<int> ();
	public Gee.ArrayList<int> alist { get; set; default = new Gee.ArrayList<int> (); }
}

void main () {
	var foo = newf ();

	foo.f();

	string [] s = {"Unowned string"};
	unowned string [] us = s;
	fff (us);

	string str = "Hello, world!";
	stdout.printf ("%s\n", str.substring(3));

	var a = new AA11 ();
	stdout.printf ("-----------\n");
	stdout.printf ("%s, %u, %u\n", a.s, a.i, a.enum1);

	var b = new BB11 ();
	stdout.printf ("-----------\n");
	stdout.printf ("%s, %u, %u\n", b.aa11.s, b.aa11.i, b.aa11.enum1);
	b.list.append (3);
	b.list.append (3);
	b.list.append (3);
	b.list.append (3);
	b.node.insert (0, new Node<int> (3));
	b.node.insert (0, new Node<int> (3));
	stdout.printf ("%u\n", b.alist.size);
	stdout.printf ("%u, %u\n", b.list.length(), b.node.n_nodes(TraverseFlags.ALL));

	List<int> l = new List<int> ();
	l.append (3);

	var tmp = "";
}