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When should we use Observer and Observable?

An interviewer asked me: What is Observer and Observable and when should we use them? I wasn’t aware of these terms, so when ...

May 29, 2022
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Return an empty Observable

The function more() is supposed to return an Observable from a get request export class Collection { public more = (): Observable<Response> => ...

May 24, 2022
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Delegation: EventEmitter or Observable in Angular

I am trying to implement something like a delegation pattern in Angular. When the user clicks on a nav-item, I would like to ...

May 19, 2022
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Angular/RxJS When should I unsubscribe from `Subscription`

When should I store the Subscription instances and invoke unsubscribe() during the ngOnDestroy life cycle and when can I simply ignore them? Saving ...

April 17, 2022
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