Angular - Signals
How can you optimize a computed signal that depends on multiple signals but only needs to update when one specific signal changes?
How can you optimize a computed signal that depends on multiple signals but only needs to update when one specific signal changes?
hard📝 Conceptual Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Understand computed signals update on all dependencies
Computed signals recalculate when any signal they call changes.Step 2: Use separate computed signals to isolate dependencies
By splitting dependencies into separate computed signals, you can control which parts update when specific signals change.Final Answer:
Create separate computed signals for each dependency and combine them -> Option CQuick Check:
Split computed signals to optimize updates [OK]
Quick Trick: Split computed signals to isolate dependency updates [OK]
Common Mistakes:
- Trying to conditionally skip recalculation inside computed
- Using signals instead of computed for derived values
- Assuming computed signals can selectively ignore dependencies
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