Benefits of useCallback Hook in React Hooks

• Performance Optimization: useCallback is used to optimize performance by memoizing functions. This prevents unnecessary re-creation of functions on every render, especially in scenarios where functions are passed down to child components.
• Prevents Unnecessary Re-renders: By memoizing functions with useCallback, React ensures that the same function instance is reused unless its dependencies change. This prevents child components from re-rendering when their props haven’t changed.
• Dependency Tracking: React tracks dependencies specified in the dependency array of useCallback. If any of these dependencies change, React will recreate the memoized function, ensuring that it always has the latest values.
• Usage with React.memo: useCallback is often used in conjunction with React.memo to optimize functional components. By memoizing both the function and the component, unnecessary re-renders can be minimized, improving overall performance.
• Ideal for Event Handlers and Callbacks: useCallback is particularly useful for memoizing event handlers and callbacks that are passed as props to child components. It helps in avoiding unnecessary re-renders of child components triggered by parent component updates.

`useCallback` in React memorizes functions, only recreating them if their dependencies change, preventing unnecessary rerenders and boosting efficiency.

The useCallback hook in React Hooks is used to optimize the performance of your React applications. It’s helpful when you have a function that you want to pass down to child components, but you don’t want those child components to re-render unnecessarily every time the parent component re-renders.