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6.9 KiB
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It can\n * be used for composing with other Observables, such as with {@link concat}.\n * By default, it uses a `null` IScheduler, which means the `next`\n * notifications are sent synchronously, although with a different IScheduler\n * it is possible to determine when those notifications will be delivered.\n *\n * @example <caption>Emit 10, 20, 30, then 'a', 'b', 'c', then start ticking every second.</caption>\n * var numbers = Rx.Observable.of(10, 20, 30);\n * var letters = Rx.Observable.of('a', 'b', 'c');\n * var interval = Rx.Observable.interval(1000);\n * var result = numbers.concat(letters).concat(interval);\n * result.subscribe(x => console.log(x));\n *\n * @see {@link create}\n * @see {@link empty}\n * @see {@link never}\n * @see {@link throw}\n *\n * @param {...T} values Arguments that represent `next` values to be emitted.\n * @param {Scheduler} [scheduler] A {@link IScheduler} to use for scheduling\n * the emissions of the `next` notifications.\n * @return {Observable<T>} An Observable that emits each given input value.\n * @static true\n * @name of\n * @owner Observable\n */\n static of<T>(...array: Array<T | IScheduler>): Observable<T> {\n let scheduler = <IScheduler>array[array.length - 1];\n if (isScheduler(scheduler)) {\n array.pop();\n } else {\n scheduler = null;\n }\n\n const len = array.length;\n if (len > 1) {\n return new ArrayObservable<T>(<any>array, scheduler);\n } else if (len === 1) {\n return new ScalarObservable<T>(<any>array[0], scheduler);\n } else {\n return new EmptyObservable<T>(scheduler);\n }\n }\n\n static dispatch(state: any) {\n\n const { array, index, count, subscriber } = state;\n\n if (index >= count) {\n subscriber.complete();\n return;\n }\n\n subscriber.next(array[index]);\n\n if (subscriber.closed) {\n return;\n }\n\n state.index = index + 1;\n\n (<any> this).schedule(state);\n }\n\n // value used if Array has one value and _isScalar\n value: any;\n\n constructor(private array: T[], private scheduler?: IScheduler) {\n super();\n if (!scheduler && array.length === 1) {\n this._isScalar = true;\n this.value = array[0];\n }\n }\n\n /** @deprecated internal use only */ _subscribe(subscriber: Subscriber<T>): TeardownLogic {\n let index = 0;\n const array = this.array;\n const count = array.length;\n const scheduler = this.scheduler;\n\n if (scheduler) {\n return scheduler.schedule(ArrayObservable.dispatch, 0, {\n array, index, count, subscriber\n });\n } else {\n for (let i = 0; i < count && !subscriber.closed; i++) {\n subscriber.next(array[i]);\n }\n subscriber.complete();\n }\n }\n}\n"]} |