· The main advantage of subscribe comparing to promise then - you can notify changes using observer.next(data) many times and your subscribers will react on each change. .subscribe is not an Angular2 thing. It's a method that comes from rxjs library which Angular is using internally. If you can imagine yourself subscribing to a newsletter, every time there is a … · The subscribe() command is used to get the results of an Observable, and it returns a Subscription. A Subscription is not the same thing as an Observable, which is why … Is it good way to call subscribe inside subscribe? tl;dr No it is not good to call a subscribe inside a subscribe. Why? Well because this is not how functional programming is supposed to work. … · How does subscribe method work when http client requests data from endpoint? Does it work as single request http? What if source in endpoint has new data, subscribe shows … · The pipe method is for chaining observable operators, and the subscribe is for activating the observable and listening for emitted values. The pipe method was added to … · this.service.method().subscribe(response)... Whenever this.service is typed and auto suggestion appears, in suggestion , method name is suggested and once suggestion is … · I am learning angular and i got confuse in these observable, observer and subscribe thing. So please explain. · The main difference is that subscribe() just "starts the whole computation" and doesn't wait (by contract) for its result. The computation may run in any other thread or even … · I have seen three ways to "listen" for changes to a value via an observable / call APIs to fetch data from the backend. One of these ways has …
