peek_nth
Description:
Example: Peek nth:
public static int main () {
	Queue<int> queue = new Queue<int> ();
	queue.push_tail (1);
	queue.push_tail (2);
	queue.push_tail (3);
	// Output: ``pop: 2; size: 3``
	int i = queue.peek_nth (1);
	print ("peek: %d; size: %u\n", i, queue.get_length ());
	return 0;
}
    
    valac --pkg glib-2.0 GLib.Queue.peek_nth.vala