【React】そろそろ技術ブログで setCount(count + 1) と書くのはやめませんかconst [count, setCount] = useState(0); const increment = () => setCount(count + 1); const decrement = () => setCount(count - 1); const [count, setCount] = useState(0); const increment = () => setCount((prevCount) => prevCount + 1); const decrement = () => setCount((prevCount) => prevCount - 1);
