insert_sorted
Description:
Inserts data into this using func to determine the new position.
Example: Insert sorted:
public static int main () {
	Queue<string> queue = new Queue<string> ();
	bool asc = true;
	CompareDataFunc<string> cmpfunc = (a, b) => {
		return (asc)? strcmp (a, b) : strcmp (b, a);
	};
	queue.insert_sorted ("2", cmpfunc);
	queue.insert_sorted ("1", cmpfunc);
	queue.insert_sorted ("3", cmpfunc);
	// Output: ``1 2 3 ``
	string item = null;
	while ((item = queue.pop_head ()) != null) {
		print ("%s ", item);
	}
	print ("\n");
	return 0;
}valac --pkg glib-2.0 GLib.Queue.insert_sorted.valaParameters:
| this | a Queue | 
| data | the data to insert | 
| func | the CompareDataFunc used to compare elements in the queue. It is  
            called with two elements of the this and  | 
| user_data | user data passed to  |