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pairwise
signature: pairwise(): Observable<Array>
pairwise(): Observable<Array>Emit the previous and current values as an array.
Examples
Example 1:
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// RxJS v6+
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import { pairwise, take } from 'rxjs/operators';
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import { interval } from 'rxjs';
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//Returns: [0,1], [1,2], [2,3], [3,4], [4,5]
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interval(1000)
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.pipe(pairwise(), take(5))
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.subscribe(console.log);
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Additional Resources
Last modified 2yr ago