[Solved] What is the main difference between a pure pipe and an impure pipe in Angular? — Ans: Pure pipes run only when input references change, impure pipes run every change... | Angular

Angular - Pipes

What is the main difference between a pure pipe and an impure pipe in Angular?

APure pipes can modify input data, impure pipes cannot.

BPure pipes run every change detection cycle, impure pipes run only when input references change.

CPure pipes run only when input references change, impure pipes run every change detection cycle.

DPure pipes are slower than impure pipes.

Step-by-Step Solution

Solution:

Step 1: Understand pure pipe behavior
Pure pipes execute only when the input reference changes, meaning they do not run on every change detection cycle.
Step 2: Understand impure pipe behavior
Impure pipes run on every change detection cycle regardless of input changes, which can impact performance.
Final Answer:
Pure pipes run only when input references change, impure pipes run every change detection cycle. -> Option C
Quick Check:
Pure vs impure pipe execution = A [OK]

Quick Trick: Pure pipes run less often; impure pipes run every cycle [OK]

Common Mistakes:

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