I just made Ruby++

made by xuuso, submitted by nicholasbs
A guide to patching the Ruby interpreter's parser to add an increment (e.g., i++) operator.

Buggy calendar systems

made by xuuso, submitted by rachel
It's not every day that you uncover a 16th-century calendar bug in Ruby!

Multi-language crackle pop

made and submitted by xuuso
The popular crackle pop program implemented in two languages but one single file. Useless & funny!