Even if you're a seasoned pro at the language of your choice, cheat sheets still come in handy as a quick reference guide, so head on over and grab what you need. Some sheets are image or PDF ...

Python is a powerful programming language, enabling even junior developers to accomplish quite a lot—as is the case for practically everything in computer science, there is an xkcd for that.

Apple's Swift has far-reaching effects on all platforms, not just iOS, OS X, watchOS and tvOS. Learn why Swift matters, how to use the programming language and how it differs from Objective-C.