Metaprogramming in a nutshell is writing code that writes code. Here’s a really simple example:

Ryan Bates recently released a Railscast on Dynamic Page Caching. This technique caches each page and then updates the page’s dynamic content using Javascript.

For Mac users, TextMate is powerful tool for writing code. But having a great tool is pretty pointless unless you know how to use it. By spending a few hours learning about TextMate’s features you can almost half the time it takes you to write code. This tutorial will walk...

The flash hash is designed to carry a message from one action to the next. Here’s a simple example:

One of the fundamental principles in Ruby is DRY: Don’t Repeat Yourself; which makes sense. Why waste time and effort re-writing code when you can simply reuse code you’ve already written? It also means if you ever need to change your code, you only have to change it in one...