What are some practical uses for Domain Specific Languages? And how do you go about designing DSLs, implementing them in Groovy, creating tests for your models and evolving the structure of the languages over time? In this fast paced session we'll look at a real world Groovy DSL, how it was designed and implemented, the testing strategies employed and the options for evolving the structure (grammar) of the DSL. If you've built DSLs but want to go further, or if you've still not figured out how a DSL might help you to build better, more maintainable apps more quickly and easily, come along and learn more about creating practical, maintainable DSLs for your projects.

Bio: Peter Bell presents internationally and writes extensively on Domain Specific Languages, Software Product Lines, Agile Development and dynamic languages on the JVM. He is creator of the SystemsForge software product line that has been presented at ooPSLA and is mentioned in an upcoming issue of IEEE Software Magazine and is on the program committee for Code Generation, the Domain Specific Modeling Workshop at SPLASH (was ooPSLA) and the British Computer Society Software Practices Advancement conference in London. He lives and works in New York.