react-native useMemo

React Native's `useMemo` hook is a hook that allows you to memoize the value of a function or an object, preventing unnecessary re-computation of that value on subsequent renders.

Here's an example of how you can use `useMemo` in React Native:

import React, { useMemo } from 'react';
import { View, Text } from 'react-native';

const MyComponent = ({ data }) => {
  const processedData = useMemo(() => {
    // Expensive computation or transformation logic here
    return data.map(item => item * 2);
  }, [data]);

  return (
    <View>
      <Text>{processedData}</Text>
    </View>
  );
};

export default MyComponent;

In the above example, the `processedData` value will only be re-computed if the `data` prop changes. If the `data` prop remains the same between renders, the memoized value will be returned from a cache, avoiding unnecessary computations.

By using `useMemo`, you can optimize your component's performance by preventing unnecessary re-renders when the dependencies haven't changed.