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12 lines
387 B
TypeScript
12 lines
387 B
TypeScript
import { Observable } from '../Observable';
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/**
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* If the source Observable is empty it returns an Observable that emits true, otherwise it emits false.
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*
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* <img src="./img/isEmpty.png" width="100%">
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*
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* @return {Observable} An Observable that emits a Boolean.
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* @method isEmpty
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* @owner Observable
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*/
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export declare function isEmpty<T>(this: Observable<T>): Observable<boolean>;
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