Problem Statement
Why should you use memoized selectors from reselect?
Explanation
Memoized selectors from reselect cache their results and only recalculate when their input selectors return different values, preventing expensive computations from running unnecessarily on every state change or render. This is crucial for derived data like filtered or sorted lists, aggregations, or complex transformations that would be costly to recalculate frequently. Reselect uses shallow equality checking on inputs to determine if recalculation is needed, significantly improving performance in large applications.
