Promiseのresolve( )に該当するのが、Observableのnext( )になる。 Observable.create((observer) => { setTimeout(() => { observer.next(1) }, 1000) }) .pipe( map(val => Number(val) + 2), map(val => Number(val) * 3), ) .subscribe(val => { console…

ObservableもPromiseも、似たようなもんだと思ってます。 import { from as fromPromise } from 'rxjs'; const foo = this.http.get('http://localhost:3000/') console.log(foo) // Observable foo.subscribe(res => console.log(1, res)) const bar = foo.…

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