How to use and implement useContext()

 Using useCallback in React is helpful for optimizing performance by memoizing callback functions, especially when passing them as props to child components. Here's a guide on how to use and implement useCallback, and when it's appropriate to do so . 

When to Use useCallback:

• Memoizing Callback Functions: Use useCallback when you want to memoize callback functions, especially those being passed down to child components as props, to prevent unnecessary re-renders.

• Optimizing Performance:Use useCallback to optimize performance in scenarios where you have expensive callback creation or want to prevent unnecessary re-renders caused by new function references.

How to Use useCallback:

• Import the Hook: Import the useCallback hook from React.

• Define the Callback Function: Define the callback function that you want to memoize.

Here's an example of how to use useCallback to memoize a callback function:

import React, { useState, useCallback } from 'react';

const CallbackComponent = () => {
  const [count, setCount] = useState(0);

  const increment = useCallback(() => {
    setCount(count + 1);
  }, [count]);

  return (
    <div>
      <p>Count: {count}</p>
      <button onClick={increment}>Increment</button>
    </div>
  );
};

export default CallbackComponent;