  /**
   * Continues an observable sequence that is terminated normally or by an exception with the next observable sequence.
   * 
   * @example
   * 1 - res = Rx.Observable.onErrorResumeNext(xs, ys, zs);
   * 1 - res = Rx.Observable.onErrorResumeNext([xs, ys, zs]);
   * @returns {Observable} An observable sequence that concatenates the source sequences, even if a sequence terminates exceptionally.   
   */
  var onErrorResumeNext = Observable.onErrorResumeNext = function () {
    var sources = argsOrArray(arguments, 0);
    return new AnonymousObservable(function (observer) {
      var pos = 0, subscription = new SerialDisposable(),
      cancelable = immediateScheduler.scheduleRecursive(function (self) {
        var current, d;
        if (pos < sources.length) {
          current = sources[pos++];
          isPromise(current) && (current = observableFromPromise(current));
          d = new SingleAssignmentDisposable();
          subscription.setDisposable(d);
          d.setDisposable(current.subscribe(observer.onNext.bind(observer), self, self));
        } else {
          observer.onCompleted();
        }
      });
      return new CompositeDisposable(subscription, cancelable);
    });
  };
