PriorityQueue

Creates an empty PriorityQueue with the given comparison function.

The comparator determines priority: the element for which comparator returns the smallest value is dequeued first.

The optional equal_func is used by contains() and remove() for element comparison. For string elements, pass GLib.str_equal. If null, pointer equality is used.

Example:

    var pq = new PriorityQueue<string> ((a, b) => {
        return strcmp (a, b);
    }, GLib.str_equal);
    assert (pq.isEmpty ());

Parameters:

comparator	the comparison function for ordering.
equal_func	the equality function for element comparison, or null for pointer equality.