| import { exhaust as higherOrder } from '../operators/exhaust'; |
| /** |
| * Converts a higher-order Observable into a first-order Observable by dropping |
| * inner Observables while the previous inner Observable has not yet completed. |
| * |
| * <span class="informal">Flattens an Observable-of-Observables by dropping the |
| * next inner Observables while the current inner is still executing.</span> |
| * |
| * <img src="./img/exhaust.png" width="100%"> |
| * |
| * `exhaust` subscribes to an Observable that emits Observables, also known as a |
| * higher-order Observable. Each time it observes one of these emitted inner |
| * Observables, the output Observable begins emitting the items emitted by that |
| * inner Observable. So far, it behaves like {@link mergeAll}. However, |
| * `exhaust` ignores every new inner Observable if the previous Observable has |
| * not yet completed. Once that one completes, it will accept and flatten the |
| * next inner Observable and repeat this process. |
| * |
| * @example <caption>Run a finite timer for each click, only if there is no currently active timer</caption> |
| * var clicks = Rx.Observable.fromEvent(document, 'click'); |
| * var higherOrder = clicks.map((ev) => Rx.Observable.interval(1000).take(5)); |
| * var result = higherOrder.exhaust(); |
| * result.subscribe(x => console.log(x)); |
| * |
| * @see {@link combineAll} |
| * @see {@link concatAll} |
| * @see {@link switch} |
| * @see {@link mergeAll} |
| * @see {@link exhaustMap} |
| * @see {@link zipAll} |
| * |
| * @return {Observable} An Observable that takes a source of Observables and propagates the first observable |
| * exclusively until it completes before subscribing to the next. |
| * @method exhaust |
| * @owner Observable |
| */ |
| export function exhaust() { |
| return higherOrder()(this); |
| } |
| //# sourceMappingURL=exhaust.js.map |
