It is a common Ruby misconception that certain argument handling techniques are faster than others, as well as using constants will increase the performance of your app compared to that of using locally scoped literals for regular expressions, strings, etc.

So simple and easy I do not even need to speak in this screencast!

So you discovered Ruby's Rack 'web framework framework', and would like to know how to extend it, this is done using Rack middleware.

Ruby is packed with confusing metaprogramming and reflection features, this article was written to end any confusion that Ruby programmers may have about metaclasses, also known as singleton or eigen classes.

Extend existing ruby methods to add your own functionality while retaining previous functionality.

Common conventions used for module mixins.

Speed up your program using ruby threads.

Utilize the method_missing method to create dynamic methods at runtime.

Quick yet effective way to clean up simplistic blocks.

The facets gem is packed full of common functionality that is certainly welcome along-side of the standard library. If you are not using it, chances are you SHOULD be.