A few weeks ago, I showed you the best cheat sheets for web designers. Following that post, many of you showed interest in having cheat sheets to help you write code. That is no surprise since the skill set of many web designers today go beyond visual design. So whether you are a seasoned programmer or just starting to learn how to code, these cheat sheets are going to be a big help to you.
Ruby on Rails
The people at Dzone have some more great cheat sheets for developers that you may want to check out:
Here's some other articles that you will definitely find useful.