The useMemo hook is used to memoize a value, preventing unnecessary recalculations and improving performance.
Solution Code
React Native
-- Example Code --
import React, { useState, useMemo } from "react";
import { View, Text, Button } from "react-native";
const App = () => {
const [count, setCount] = useState(0);
const memoizedValue = useMemo(() => {
return count * 2;
}, [count]);
return (
<View>
<Text>Count: {count}</Text>
<Text>Memoized Value: {memoizedValue}</Text>
<Button title="Increment" onPress={() => setCount(count + 1)} />
</View>
);
};
export default App;Explanation
This code demonstrates how to use the useMemo hook to memoize a value.Guided Hints
{'hint': 'Use useMemo to memoize values.'}
{'hint': 'It prevents unnecessary recalculations.'}