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Why use RxJS ?
Author: Amine BouchamStatus: PublishedQuestion passed 95 times
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How is this way of doing called?
```ts
interface UserData {
[key: string]: any;
}
class UserDataService {
private userData: BehaviorSubject<UserData> = new BehaviorSubject({});
private userData$: Observable<UserData> = this.userData.asObservable();
public setUserData(userData: UserData) {
this.userData.next(userData);
}
public getUserData(): Observable<UserData> {
return this.userData$;
}
public getUserDataByKey(key: string) {
return this.userData$.pipe(map((userData) => userData[key]));
}
}
```0
What is an Observable?