The ability to dynamically generate code can greatly increase the expressiveness of developers. Repetitive code can be eliminated and complex decisions be pushed back to configuration files that can be changed by business analysts. In the past .NET developers built dynamic code using Reflection.Emit or CodeDom, but with LINQ Expressions a lightweight alternative has become available.
JRuby is built on Java - so it can make use of Java Web Start to make it easy to deploy JRuby apps. This article walks through the necessary steps for releasing a JRuby app with Java Web Start, including: how to handle signing, setting JRuby parameters and a look at using JRuby 1.1's coming AheadOfTime (AOT) compilation feature.