// TODO - Comment this function

//Dear future me. Please forgive me. 
//I can't even begin to express how sorry I am.  

我今天刚发现了这个:

//private instance variable for storing age
public static int age;

// TODO: not this

上面写了一个同事迫切需要优化的查询。替他说句话，当时我们几个月都是每周工作70个小时……

#!/usr/bin/sh
#       Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
#         All Rights Reserved

#       THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T
#       The copyright notice above does not evidence any
#       actual or intended publication of such source code.

#ident  "@(#)false.sh   1.6     93/01/11 SMI"   /* SVr4.0 1.3   */
exit 255

从SunOS 5.9即Solaris 9获取(/usr/bin/false)

我最喜欢的是这样的

 # commented out
 ...
 ### end of the formerly uncommented #2001-02-22 John Doe

// simply copied from another code