Function all

test/angular/1.2/angular.js:11976–11998

* @ngdoc method * @name $q#all * @kind function * * @description * Combines multiple promises into a single promise that is resolved when all of the input * promises are resolved. * * @param {Array. |Object. } promises An array or hash of promises. * @retur

(promises)

   *   with the same rejection value.
   */
  function all(promises) {
    var deferred = defer(),
        counter = 0,
        results = isArray(promises) ? [] : {};

    forEach(promises, function(promise, key) {
      counter++;
      ref(promise).then(function(value) {
        if (results.hasOwnProperty(key)) return;
        results[key] = value;
        if (!(--counter)) deferred.resolve(results);
      }, function(reason) {
        if (results.hasOwnProperty(key)) return;
        deferred.reject(reason);
      });
    });

    if (counter === 0) {
      deferred.resolve(results);
    }

    return deferred.promise;
  }

  return {
    defer: defer,