49 lines
2.0 KiB
JavaScript
49 lines
2.0 KiB
JavaScript
"use strict";
|
|
var bufferCount_1 = require('../operators/bufferCount');
|
|
/**
|
|
* Buffers the source Observable values until the size hits the maximum
|
|
* `bufferSize` given.
|
|
*
|
|
* <span class="informal">Collects values from the past as an array, and emits
|
|
* that array only when its size reaches `bufferSize`.</span>
|
|
*
|
|
* <img src="./img/bufferCount.png" width="100%">
|
|
*
|
|
* Buffers a number of values from the source Observable by `bufferSize` then
|
|
* emits the buffer and clears it, and starts a new buffer each
|
|
* `startBufferEvery` values. If `startBufferEvery` is not provided or is
|
|
* `null`, then new buffers are started immediately at the start of the source
|
|
* and when each buffer closes and is emitted.
|
|
*
|
|
* @example <caption>Emit the last two click events as an array</caption>
|
|
* var clicks = Rx.Observable.fromEvent(document, 'click');
|
|
* var buffered = clicks.bufferCount(2);
|
|
* buffered.subscribe(x => console.log(x));
|
|
*
|
|
* @example <caption>On every click, emit the last two click events as an array</caption>
|
|
* var clicks = Rx.Observable.fromEvent(document, 'click');
|
|
* var buffered = clicks.bufferCount(2, 1);
|
|
* buffered.subscribe(x => console.log(x));
|
|
*
|
|
* @see {@link buffer}
|
|
* @see {@link bufferTime}
|
|
* @see {@link bufferToggle}
|
|
* @see {@link bufferWhen}
|
|
* @see {@link pairwise}
|
|
* @see {@link windowCount}
|
|
*
|
|
* @param {number} bufferSize The maximum size of the buffer emitted.
|
|
* @param {number} [startBufferEvery] Interval at which to start a new buffer.
|
|
* For example if `startBufferEvery` is `2`, then a new buffer will be started
|
|
* on every other value from the source. A new buffer is started at the
|
|
* beginning of the source by default.
|
|
* @return {Observable<T[]>} An Observable of arrays of buffered values.
|
|
* @method bufferCount
|
|
* @owner Observable
|
|
*/
|
|
function bufferCount(bufferSize, startBufferEvery) {
|
|
if (startBufferEvery === void 0) { startBufferEvery = null; }
|
|
return bufferCount_1.bufferCount(bufferSize, startBufferEvery)(this);
|
|
}
|
|
exports.bufferCount = bufferCount;
|
|
//# sourceMappingURL=bufferCount.js.map
|