42 lines
1.7 KiB
JavaScript
42 lines
1.7 KiB
JavaScript
"use strict";
|
|
var exhaust_1 = require('../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
|
|
*/
|
|
function exhaust() {
|
|
return exhaust_1.exhaust()(this);
|
|
}
|
|
exports.exhaust = exhaust;
|
|
//# sourceMappingURL=exhaust.js.map
|