useMemo and useCallback | React Hooks Tutorial #9

In this episode of my React Hooks Tutorial, we will learn about the useMemo and useCallback hooks. All those hooks do is improve our application performance by using memoization. While the useMemo hook is used to memoize a value, the useCallback hooks allows us to memoize a function (a callback) that we can pass as a prop to PureComponent to prevent excessive component re-rendering and therefore improve performance.

Starting repository:

Ending repository:

Timestamps:

►0:00 Introduction
►0:16 Purpose of the useMemo hook
►0:55 Implementing the useMemo hook
►3:09 Purpose of the useCallback hook
►3:49 Implementing the useCallback hook
►5:52 Ending

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