함수형 setState가 reactjs 의 미래래요

https://www.vobour.com/%ED%95%A8%EC%88%98%ED%98%95-setstate%EA%B0%80-%EB%A6%AC%EC%95%A1%ED%8A%B8-react-%EC%9D%98-%EB%AF%B8%EB%9E%98%EC%9D%B4%EB%8B%A4-functiona