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.
37 lines
1.5 KiB
37 lines
1.5 KiB
import { Observable } from '../Observable'; |
|
import { MonoTypeOperatorFunction } from '../interfaces'; |
|
/** |
|
* Emits the most recently emitted value from the source Observable whenever |
|
* another Observable, the `notifier`, emits. |
|
* |
|
* <span class="informal">It's like {@link sampleTime}, but samples whenever |
|
* the `notifier` Observable emits something.</span> |
|
* |
|
* <img src="./img/sample.png" width="100%"> |
|
* |
|
* Whenever the `notifier` Observable emits a value or completes, `sample` |
|
* looks at the source Observable and emits whichever value it has most recently |
|
* emitted since the previous sampling, unless the source has not emitted |
|
* anything since the previous sampling. The `notifier` is subscribed to as soon |
|
* as the output Observable is subscribed. |
|
* |
|
* @example <caption>On every click, sample the most recent "seconds" timer</caption> |
|
* var seconds = Rx.Observable.interval(1000); |
|
* var clicks = Rx.Observable.fromEvent(document, 'click'); |
|
* var result = seconds.sample(clicks); |
|
* result.subscribe(x => console.log(x)); |
|
* |
|
* @see {@link audit} |
|
* @see {@link debounce} |
|
* @see {@link sampleTime} |
|
* @see {@link throttle} |
|
* |
|
* @param {Observable<any>} notifier The Observable to use for sampling the |
|
* source Observable. |
|
* @return {Observable<T>} An Observable that emits the results of sampling the |
|
* values emitted by the source Observable whenever the notifier Observable |
|
* emits value or completes. |
|
* @method sample |
|
* @owner Observable |
|
*/ |
|
export declare function sample<T>(notifier: Observable<any>): MonoTypeOperatorFunction<T>;
|
|
|