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Which of these is a valid way to use tap inside an observable pipe?

easy🧠 Conceptual Q2 of 15
Angular - RxJS Operators
Which of these is a valid way to use tap inside an observable pipe?
Aobservable$.tap(value => console.log(value))
Bobservable$.pipe(map(tap(value => console.log(value))))
Ctap(observable$, value => console.log(value))
Dobservable$.pipe(tap(value => console.log(value)))
Step-by-Step Solution
Solution:
  1. Step 1: Recall correct RxJS pipe usage

    Operators like tap must be used inside the pipe() method of an observable.
  2. Step 2: Identify correct syntax

    observable$.pipe(tap(value => console.log(value))) correctly uses tap inside pipe with a function to log values.
  3. Final Answer:

    observable$.pipe(tap(value => console.log(value))) -> Option D
  4. Quick Check:

    tap usage syntax = observable$.pipe(tap(...)) [OK]
Quick Trick: Always use tap inside pipe() for side effects [OK]
Common Mistakes:
MISTAKES
  • Calling tap directly on observable without pipe
  • Passing tap as argument to map
  • Using tap as a standalone function

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