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Avi Bryant talks about the iterative process that led to Trendly (http://trendly.com/ ), using Javascript, Ruby and Java in the process. He goes on to give his view on the state of Smalltalk and Squeak and talks about his experiments with writing a Smalltalk that compiles to idiomatic Javascript to make use of all the modern Javascript VMs.
Venkat Subramaniam explains what DSLs are good for, then he demos the creation of a DSL in Java, starting with a grammar and a parser, with an emphasis on useful patterns to be used along the way.
Irony is a framework created by Roman Ivantsov and used to write internal DSLs or entire new languages that run on .NET, the grammar being written in C#.
LESS and Sass are Ruby tools that allow to reduce redundancy in CSS files by introducing variables, mixins, and other time proven language features into CSS. We take a look at how the two tools work and what they offer.
A port of the popular code coverage tool rcov is now available for JRuby. Ola Bini started a Hibernate-based library for persisting Ruby objects named Ribs. And finally, JRuby trunk contains a new MBean for analysing parse times.
