5.6. Summary

Congratulations! You’ve just reached the end of our discussion about implementing internal DSLs in dynamically typed languages. I chose Ruby, Groovy, and Clojure as the three implementation languages mainly because of the variety that they offer as residents of the JVM.

JRuby is the Java implementation of Ruby that provides a bridge for it to interoperate with the Java object model. It comes with the strength of Ruby metaprogramming and adds to it the power of Java interoperability. Groovy is known as the Java DSL and shares the same object model as Java. Clojure, despite being implemented on top of the Java object model, offers the strong functional programming paradigm of Lisp.