TechnologyProfessionTest
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TechnologyProfessionTest
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3838
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21 questions
Easy
0 vote157 runs0 comment
Expert
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Hard
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Medium
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Hard
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Medium
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Medium
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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])); } } ```
Amine Bouchamat Sep 5, 2022
Easy
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Medium
0 vote121 runs0 comment
Medium
-1 vote137 runs2 comments
Why is it important to unsubscribe in RxJS?
Amine Bouchamat Sep 5, 2022