useCallback and useMemo are an attempt to bypass weak spots that come with the functional programming approach chosen with React hooks. In ... ... <看更多>

Example with useCallback. ... import React, {useState, useMemo, useCallback} from 'react';. function App() { ... const on_length_changed = useCallback((e) ... ... <看更多>

Although you can choose any name you like for these functions, by convention they are named varName and setVarName as seen in [value, setValue] , [colour, ... ... <看更多>

Hi, I would like to understand why the example for choice-list has a useCallback : const [selected, setSelected] = useState(['hidden']); ... ... <看更多>