You want to log each value emitted by an HTTP request observable without changing the data. Which is the best way to do this using tap? Consider this code:

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Angular - RxJS Operators

You want to log each value emitted by an HTTP request observable without changing the data. Which is the best way to do this using tap? Consider this code:

this.http.get('/api/data').pipe(
  // What goes here?
).subscribe(data => this.process(data));

Asubscribe(data => console.log('Received:', data))

Bmap(data => { console.log('Received:', data); return data; })

Ctap(data => console.log('Received:', data))

Dfilter(data => { console.log('Received:', data); return true; })

Step-by-Step Solution

Solution:

Step 1: Understand the goal
You want to log data without changing it before passing it to subscribe.
Step 2: Choose the operator that logs without modifying
tap is designed for side effects like logging without altering data. map transforms data, filter filters it, and logging inside subscribe happens after pipe.
Final Answer:
tap(data => console.log('Received:', data)) -> Option C
Quick Check:
tap logs side effects without data change [OK]

Quick Trick: Use tap inside pipe for logging without data change [OK]

Common Mistakes:

MISTAKES

Using map for logging (changes data)
Logging inside subscribe instead of pipe
Using filter which may drop data

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More Angular Quizzes

You want to log each value emitted by an HTTP request observable without changing the data. Which is the best way to do this using tap? Consider this code:

Step 1: Understand the goal

Step 2: Choose the operator that logs without modifying

Final Answer:

Quick Check:

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