震惊，在 github 搜 “define private public” 能搜到三万条结果

https://github.com/search?q=%22define+private+public%22&type=Code

大部分都在注释旁边道歉/解释: this is real evil but/ugly but/sorry/egregious abuse/it leaves no other option

里面不乏使用广泛的代码比如 DOOM 3
https://github.com/id-Software/DOOM-3-BFG/blob/1caba1979589971b5ed44e315d9ead30b278d8b4/neo/d3xp/Game_local.h#L42