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53 lines
2.3 KiB
53 lines
2.3 KiB
"use strict"; |
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var mergeMap_1 = require('./mergeMap'); |
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var identity_1 = require('../util/identity'); |
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/** |
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* Converts a higher-order Observable into a first-order Observable which |
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* concurrently delivers all values that are emitted on the inner Observables. |
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* |
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* <span class="informal">Flattens an Observable-of-Observables.</span> |
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* |
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* <img src="./img/mergeAll.png" width="100%"> |
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* |
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* `mergeAll` subscribes to an Observable that emits Observables, also known as |
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* a higher-order Observable. Each time it observes one of these emitted inner |
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* Observables, it subscribes to that and delivers all the values from the |
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* inner Observable on the output Observable. The output Observable only |
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* completes once all inner Observables have completed. Any error delivered by |
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* a inner Observable will be immediately emitted on the output Observable. |
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* |
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* @example <caption>Spawn a new interval Observable for each click event, and blend their outputs as one Observable</caption> |
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* var clicks = Rx.Observable.fromEvent(document, 'click'); |
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* var higherOrder = clicks.map((ev) => Rx.Observable.interval(1000)); |
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* var firstOrder = higherOrder.mergeAll(); |
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* firstOrder.subscribe(x => console.log(x)); |
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* |
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* @example <caption>Count from 0 to 9 every second for each click, but only allow 2 concurrent timers</caption> |
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* var clicks = Rx.Observable.fromEvent(document, 'click'); |
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* var higherOrder = clicks.map((ev) => Rx.Observable.interval(1000).take(10)); |
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* var firstOrder = higherOrder.mergeAll(2); |
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* firstOrder.subscribe(x => console.log(x)); |
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* |
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* @see {@link combineAll} |
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* @see {@link concatAll} |
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* @see {@link exhaust} |
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* @see {@link merge} |
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* @see {@link mergeMap} |
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* @see {@link mergeMapTo} |
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* @see {@link mergeScan} |
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* @see {@link switch} |
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* @see {@link zipAll} |
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* |
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* @param {number} [concurrent=Number.POSITIVE_INFINITY] Maximum number of inner |
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* Observables being subscribed to concurrently. |
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* @return {Observable} An Observable that emits values coming from all the |
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* inner Observables emitted by the source Observable. |
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* @method mergeAll |
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* @owner Observable |
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*/ |
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function mergeAll(concurrent) { |
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if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; } |
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return mergeMap_1.mergeMap(identity_1.identity, null, concurrent); |
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} |
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exports.mergeAll = mergeAll; |
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//# sourceMappingURL=mergeAll.js.map
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