You want to optimize an Angular app that uses a pipe transforming a large array frequently updated in place. Which pipe type should you use and why?

hard📝 Application Q8 of 15

Angular - Pipes

AUse a pure pipe but force new array references on updates.

BUse an impure pipe to recalculate on every change detection cycle.

CUse an impure pipe and cache results manually.

DUse a pure pipe to avoid unnecessary recalculations when array reference is unchanged.

Step-by-Step Solution

Solution:

Step 1: Understand array update behavior
Updating array in place does not change reference, so pure pipes won't recalc unless reference changes.
Step 2: Choose best optimization
Using pure pipe with new array references on updates avoids unnecessary recalculations and improves performance.
Final Answer:
Use a pure pipe but force new array references on updates. -> Option A
Quick Check:
Pure pipes + new references optimize performance [OK]

Quick Trick: Use pure pipes with new references for large arrays [OK]

Common Mistakes:

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