[Solved] Consider the following Angular RxJS code:import { of } from 'rxjs';... of(2, 3, 5, 8).pipe( filter(num => num > 3), map(num => num + 1) ).subscribe(console.log);What will be the output? | Angular

Angular - RxJS Operators

Consider the following Angular RxJS code:

import { of } from 'rxjs';
import { map, filter } from 'rxjs/operators';

of(2, 3, 5, 8).pipe(
  filter(num => num > 3),
  map(num => num + 1)
).subscribe(console.log);

What will be the output?

A6, 9

B3, 5, 9

C4, 6, 9

D5, 6, 9

Step-by-Step Solution

Solution:

Step 1: Apply filter
Filter keeps numbers greater than 3: 5 and 8.
Step 2: Apply map
Map adds 1 to each: 5 + 1 = 6, 8 + 1 = 9.
Step 3: Output
The output is 6 and 9.
Final Answer:
6, 9 -> Option A
Quick Check:
Filter then map transforms stream correctly [OK]

Quick Trick: Filter first, then map to transform values [OK]

Common Mistakes:

MISTAKES

Applying map before filter
Including numbers not passing filter
Misunderstanding operator order

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Consider the following Angular RxJS code:

Step 1: Apply filter

Step 2: Apply map

Step 3: Output

Final Answer:

Quick Check:

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