[Solved] Which of the following correctly defines an impure pipe in Angular? — Ans: @Pipe({name: 'examplePipe', pure: false}) | Angular

Angular - Pipes

Which of the following correctly defines an impure pipe in Angular?

A@Pipe({name: 'examplePipe', pure: false})

B@Pipe({name: 'examplePipe', pure: true})

C@Pipe({name: 'examplePipe', impure: true})

D@Pipe({name: 'examplePipe', pure: 'false'})

Step-by-Step Solution

Solution:

Step 1: Recall pipe purity syntax
Angular uses the 'pure' property set to false to mark a pipe as impure.
Step 2: Evaluate options
@Pipe({name: 'examplePipe', pure: false}) correctly sets pure: false. @Pipe({name: 'examplePipe', pure: true}) is pure. @Pipe({name: 'examplePipe', impure: true}) uses an invalid property 'impure'. @Pipe({name: 'examplePipe', pure: 'false'}) incorrectly uses a string instead of boolean.
Final Answer:
@Pipe({name: 'examplePipe', pure: false}) -> Option A
Quick Check:
Impure pipes use pure: false boolean flag [OK]

Quick Trick: Impure pipes: pure property set to false boolean [OK]

Common Mistakes:

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Which of the following correctly defines an impure pipe in Angular?