What is the point of using SubSink instead of a Subscriptions array

Question

I just watched a ngConf video of John Papa talking about SubSink as a best practice in order to unsubscribe from obversables.

I was actually using Subscriptions[] then push subscriptions into it then forEach unsubscribe at cmp destroy.

Is their something I missed or is it just a readability improvment to use SubSink ?

Answer 1

Another way, without installing third party libraries is to group subscriptions up with .add() method

export class CustomerComponent implements OnInit, OnDestroy {
  constructor(
    private dataService: DataService
  ){}

  private subs = new Subscription();

  ngOnInit() {
    this.subs.add(this.dataService.getCustomer().subscribe());
    this.subs.add(this.dataService.getProducts().subscribe());
  }

  ngOnDestroy() {
    this.subs.unsubscribe();
  }
}