$rootScope candy

gistfile1.txt

   $rootScope.$safeApply = function (fn) { #safe apply can be accessed from any $scope
      var phase;
      phase = this.$root.$$phase;
      if (phase === '$apply' || phase === '$digest') {
        if (fn) {
          fn();
        }
      } else {
        this.$apply(fn);
      }
      return true;
    };
    $rootScope.$once = function (event, fn) { #once can be accessed from any scope
      var killListener, self;
      self = this;
      killListener = self.$on(event, function (event, parameters) {
        self.$safeApply(function () {
          fn(event, parameters);
          killListener();
          return true;
        });
        return true;
      });
      return killListener;
    };