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What is the main purpose of using createSelector in Angular state management?

easy📝 Conceptual Q11 of 15
Angular - State Management
What is the main purpose of using createSelector in Angular state management?
ATo dispatch actions to the store
BTo directly modify the state values
CTo compute derived data from the state efficiently
DTo subscribe to HTTP requests
Step-by-Step Solution
Solution:

  1. Step 1: Understand what createSelector does

    createSelector is used to create selectors that compute derived data from the state without modifying it.

  2. Step 2: Differentiate from other store operations

    Modifying state or dispatching actions are done by reducers and actions, not selectors.

  3. Final Answer:

    To compute derived data from the state efficiently -> Option C

  4. Quick Check:

    Derived data = createSelector [OK]
Quick Trick: Remember: selectors read and compute, not modify state [OK]
Common Mistakes:
  • Confusing selectors with actions or reducers
  • Thinking selectors modify state
  • Assuming selectors handle side effects

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