最初的《毁灭战士》拥有一个带有静态墙壁的引擎，但却不能移动;结果，所有的门都是垂直打开的;任何东西都不可能水平移动。当源代码发布后，我在查看代码时，在处理门的源文件中看到了这个，在一大块注释掉的代码的开头:

// UNUSED
// Separate into p_slidoor.c?

#if 0           // ABANDONED TO THE MISTS OF TIME!!!
//
// EV_SlidingDoor : slide a door horizontally
// (animate midtexture, then set noblocking line)
//

#define SHIT_HAPPENED (BASE + 1)   /* generic shit happened */

try {

}
catch (SQLException ex) {
    // Basically, without saying too much, you're screwed. Royally and totally.
}
catch(Exception ex)
{
    //If you thought you were screwed before, boy have I news for you!!!
}

我经常发现这个

// fix it!

/*
    FIXME:  why the fuck did anyone ever think this kind of expensive iteration
                    was a good idea?

What do you think you're doing, Dave?