Example 1: distinct without selector
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// RxJS v6+import { of } from 'rxjs';import { distinct } from 'rxjs/operators';of(1, 2, 3, 4, 5, 1, 2, 3, 4, 5).pipe(distinct())// OUTPUT: 1,2,3,4,5.subscribe(console.log);
Example 2: distinct with key selector
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// RxJS v6+import { from } from 'rxjs';import { distinct } from 'rxjs/operators';const obj1 = { id: 3, name: 'name 1' };const obj2 = { id: 4, name: 'name 2' };const obj3 = { id: 3, name: 'name 3' };const vals = [obj1, obj2, obj3];from(vals).pipe(distinct(e => e.id)).subscribe(console.log);/*OUTPUT:{id: 3, name: "name 1"}{id: 4, name: "name 2"}*/
distinct 📰 - Official docs
📁 Source Code: https://github.com/ReactiveX/rxjs/blob/master/src/internal/operators/distinct.ts