Function defer

OpenReservation/wwwroot/Scripts/angular.js:15953–15960

()

         * @returns {Deferred} Returns a new instance of deferred.
         */
        var defer = function () {
            var d = new Deferred();
            //Necessary to support unbound execution :/
            d.resolve = simpleBind(d, d.resolve);
            d.reject = simpleBind(d, d.reject);
            d.notify = simpleBind(d, d.notify);
            return d;
        };

        function Promise() {
            this.$$state = { status: 0 };