Selector Memoization Basics

quiz
medium
state
10 min
state-selectors
mark done

What is the primary purpose of using reselect’s createSelector?

What is the primary purpose of using reselect's createSelector?

A To automatically persist state to localStorage
B To derive computed data from the store while avoiding expensive recalculations
C To dispatch actions asynchronously
D To bind action creators to component props

Which of the following will cause a memoized selector to recompute even if its input selectors return the same references?

Which of the following will cause a memoized selector to recompute even if its input selectors return the same references?

A The state tree is deeply cloned but leaf values are unchanged
B A parent component re-renders due to a context change
C The selector's result function is invoked with different arguments
D The store is replaced with a new instance but has the same shape

Reading: Selectors · State Basics
Agent Skill: state-selectors