You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
1.5 KiB
39 lines
1.5 KiB
"use strict"; |
|
var mergeScan_1 = require('../operators/mergeScan'); |
|
/** |
|
* Applies an accumulator function over the source Observable where the |
|
* accumulator function itself returns an Observable, then each intermediate |
|
* Observable returned is merged into the output Observable. |
|
* |
|
* <span class="informal">It's like {@link scan}, but the Observables returned |
|
* by the accumulator are merged into the outer Observable.</span> |
|
* |
|
* @example <caption>Count the number of click events</caption> |
|
* const click$ = Rx.Observable.fromEvent(document, 'click'); |
|
* const one$ = click$.mapTo(1); |
|
* const seed = 0; |
|
* const count$ = one$.mergeScan((acc, one) => Rx.Observable.of(acc + one), seed); |
|
* count$.subscribe(x => console.log(x)); |
|
* |
|
* // Results: |
|
* 1 |
|
* 2 |
|
* 3 |
|
* 4 |
|
* // ...and so on for each click |
|
* |
|
* @param {function(acc: R, value: T): Observable<R>} accumulator |
|
* The accumulator function called on each source value. |
|
* @param seed The initial accumulation value. |
|
* @param {number} [concurrent=Number.POSITIVE_INFINITY] Maximum number of |
|
* input Observables being subscribed to concurrently. |
|
* @return {Observable<R>} An observable of the accumulated values. |
|
* @method mergeScan |
|
* @owner Observable |
|
*/ |
|
function mergeScan(accumulator, seed, concurrent) { |
|
if (concurrent === void 0) { concurrent = Number.POSITIVE_INFINITY; } |
|
return mergeScan_1.mergeScan(accumulator, seed, concurrent)(this); |
|
} |
|
exports.mergeScan = mergeScan; |
|
//# sourceMappingURL=mergeScan.js.map
|