how to return an empty observable

Question

according to this answer How to return an empty observable in rxjs i have tried all of it but it did not work for me

here is my code

post(url):Obser         


        

Answer 1

In angular 2 you can return empty observable by using this :

import {EmptyObservable} from 'rxjs/EmptyObservable';
    return new EmptyObservable();