setstate not updating react code example

Example 1: react state not updating immediately

//In case of hooks, you should use useEffect hook.
const [fruit, setFruit] = useState('');

setFruit('Apple');

useEffect(() => {
  console.log('Fruit', fruit);
}, [fruit])

Example 2: setstate not updating state immediately

this.setState({pencil:!this.state.pencil}, myFunction)