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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <base data-ice="baseUrl" href="../../../"> <title data-ice="title">es6/operator/race.js | RxJS API Document</title> <link type="text/css" rel="stylesheet" href="css/style.css"> <link type="text/css" rel="stylesheet" href="css/prettify-tomorrow.css"> <script src="script/prettify/prettify.js"></script> <script src="script/manual.js"></script> <script data-ice="userScript" src="user/script/0-Rx.js"></script> <script data-ice="userScript" src="user/script/1-devtools-welcome.js"></script> <script data-ice="userScript" src="user/script/2-custom-manual-styles.js"></script> <script data-ice="userScript" src="user/script/3-decision-tree-widget.min.js"></script> <script data-ice="userScript" src="user/script/4-theme-toggler.js"></script> <link data-ice="userStyle" rel="stylesheet" href="user/css/0-main.css"> </head> <body class="layout-container" data-ice="rootContainer"> <header> <a href="./">Home</a> <a href="./manual/index.html" 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data-ice="name"><span><a href="typedef/index.html#static-typedef-Rx.Symbol">Rx.Symbol</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">observable</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-ConnectableObservable">ConnectableObservable</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">observable/dom</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-AjaxError">AjaxError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-AjaxResponse">AjaxResponse</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-AjaxTimeoutError">AjaxTimeoutError</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">operator</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-GroupedObservable">GroupedObservable</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">scheduler</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-Action">Action</a></span></span></li> <li data-ice="doc"><div data-ice="dirPath" class="nav-dir-path">util</div><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-ArgumentOutOfRangeError">ArgumentOutOfRangeError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-EmptyError">EmptyError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-ObjectUnsubscribedError">ObjectUnsubscribedError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-TimeoutError">TimeoutError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-UnsubscriptionError">UnsubscriptionError</a></span></span></li> <li data-ice="doc"><span data-ice="kind" class="kind-variable">V</span><span data-ice="name"><span><a href="variable/index.html#static-variable-root">root</a></span></span></li> </ul> </div> </nav> <div class="content" data-ice="content"><h1 data-ice="title">es6/operator/race.js</h1> <pre class="source-code line-number raw-source-code"><code class="prettyprint linenums" data-ice="content">import { isArray } from &apos;../util/isArray&apos;; import { ArrayObservable } from &apos;../observable/ArrayObservable&apos;; import { OuterSubscriber } from &apos;../OuterSubscriber&apos;; import { subscribeToResult } from &apos;../util/subscribeToResult&apos;; /* tslint:disable:max-line-length */ export function race() { var observables = []; for (var _i = 0; _i &lt; arguments.length; _i++) { observables[_i - 0] = arguments[_i]; } // if the only argument is an array, it was most likely called with // `pair([obs1, obs2, ...])` if (observables.length === 1 &amp;&amp; isArray(observables[0])) { observables = observables[0]; } return this.lift.call(raceStatic.apply(void 0, [this].concat(observables))); } export function raceStatic() { var observables = []; for (var _i = 0; _i &lt; arguments.length; _i++) { observables[_i - 0] = arguments[_i]; } // if the only argument is an array, it was most likely called with // `pair([obs1, obs2, ...])` if (observables.length === 1) { if (isArray(observables[0])) { observables = observables[0]; } else { return observables[0]; } } return new ArrayObservable(observables).lift(new RaceOperator()); } export var RaceOperator = (function () { function RaceOperator() { } RaceOperator.prototype.call = function (subscriber, source) { return source._subscribe(new RaceSubscriber(subscriber)); }; return RaceOperator; }()); /** * We need this JSDoc comment for affecting ESDoc. * @ignore * @extends {Ignored} */ export var RaceSubscriber = (function (_super) { __extends(RaceSubscriber, _super); function RaceSubscriber(destination) { _super.call(this, destination); this.hasFirst = false; this.observables = []; this.subscriptions = []; } RaceSubscriber.prototype._next = function (observable) { this.observables.push(observable); }; RaceSubscriber.prototype._complete = function () { var observables = this.observables; var len = observables.length; if (len === 0) { this.destination.complete(); } else { for (var i = 0; i &lt; len; i++) { var observable = observables[i]; var subscription = subscribeToResult(this, observable, observable, i); if (this.subscriptions) { this.subscriptions.push(subscription); this.add(subscription); } } this.observables = null; } }; RaceSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) { if (!this.hasFirst) { this.hasFirst = true; for (var i = 0; i &lt; this.subscriptions.length; i++) { if (i !== outerIndex) { var subscription = this.subscriptions[i]; subscription.unsubscribe(); this.remove(subscription); } } this.subscriptions = null; } this.destination.next(innerValue); }; return RaceSubscriber; }(OuterSubscriber)); //# sourceMappingURL=race.js.map</code></pre> </div> <footer class="footer"> Generated by <a href="https://esdoc.org">ESDoc<span data-ice="esdocVersion">(0.4.8)</span></a> </footer> <script src="script/search_index.js"></script> <script 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