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47 lines
2.1 KiB
47 lines
2.1 KiB
2 years ago
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"use strict";
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var combineAll_1 = require('../operators/combineAll');
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/**
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* Converts a higher-order Observable into a first-order Observable by waiting
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* for the outer Observable to complete, then applying {@link combineLatest}.
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*
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* <span class="informal">Flattens an Observable-of-Observables by applying
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* {@link combineLatest} when the Observable-of-Observables completes.</span>
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*
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* <img src="./img/combineAll.png" width="100%">
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*
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* Takes an Observable of Observables, and collects all Observables from it.
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* Once the outer Observable completes, it subscribes to all collected
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* Observables and combines their values using the {@link combineLatest}
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* strategy, such that:
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* - Every time an inner Observable emits, the output Observable emits.
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* - When the returned observable emits, it emits all of the latest values by:
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* - If a `project` function is provided, it is called with each recent value
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* from each inner Observable in whatever order they arrived, and the result
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* of the `project` function is what is emitted by the output Observable.
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* - If there is no `project` function, an array of all of the most recent
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* values is emitted by the output Observable.
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*
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* @example <caption>Map two click events to a finite interval Observable, then apply combineAll</caption>
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* var clicks = Rx.Observable.fromEvent(document, 'click');
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* var higherOrder = clicks.map(ev =>
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* Rx.Observable.interval(Math.random()*2000).take(3)
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* ).take(2);
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* var result = higherOrder.combineAll();
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* result.subscribe(x => console.log(x));
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*
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* @see {@link combineLatest}
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* @see {@link mergeAll}
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*
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* @param {function} [project] An optional function to map the most recent
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* values from each inner Observable into a new result. Takes each of the most
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* recent values from each collected inner Observable as arguments, in order.
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* @return {Observable} An Observable of projected results or arrays of recent
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* values.
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* @method combineAll
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* @owner Observable
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*/
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function combineAll(project) {
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return combineAll_1.combineAll(project)(this);
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}
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exports.combineAll = combineAll;
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//# sourceMappingURL=combineAll.js.map
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