pairwise.md

pairwise

signature: pairwise(): Observable<Array>

Emit the previous and current values as an array.

Examples

Example 1:

( jsBin | jsFiddle )

var interval = Rx.Observable.interval(1000);

//Returns: [0,1], [1,2], [2,3], [3,4], [4,5]
interval.pairwise()
	.take(5)
	.subscribe(console.log);

Additional Resources

• pairwise 📰 - Official docs

---

📁 Source Code: https://github.com/ReactiveX/rxjs/blob/master/src/operator/pairwise.ts