编码原则 : DRY, KISS, YAGNI, S.O.L.I.D

Dont Repeat Yourself. Keep is Simple, Stupid. You Ain't Gonna Need It. 你不需要它 ( 不试图添加你认为以后可能需要的代码，适可而止 ) S.O.L.I.D SRP OCP LSP ISP DIP Link：https://www