forEach

Applies the given function to each element in the deque, from first to last.

Example:

    var deque = new Deque<string> (GLib.str_equal);
    deque.addLast ("a");
    deque.addLast ("b");
    deque.forEach ((s) => {
        print ("%s\n", s);
    });

Parameters:

func	the function to apply to each element.