本课内容目前为英文。
Write it once, use it everywhere
Turning points into a level, formatting a date, checking a username: each is a job you will do again and again. A function packs a job under a name.
本课内容目前为英文。
Turning points into a level, formatting a date, checking a username: each is a job you will do again and again. A function packs a job under a name.