Crista Lopes discusses the idea of using constraints to define styles of programming and architecture. Also: large scale static analysis of open source code, Open Simulator and VR, and much more.
Miles Sabin explains dependent typing in Scala, the Shapeless project that demonstrates these concepts, static typing improvements in Scala and Scala Macros.
Dick Wall explores the state and future of Java, his reasons for switching to programming in Scala, the SubCut Dependency Injection library for Scala, Scala Compiler Plugins and much more.
Ryan Davis, known as "zenspider", is one of the highest-profile Rubyists in the world, and arguably one of the most influential ones. He is the author of a number of valuable Ruby open-source tools, including RubyInline and ZenTest. In this exclusive InfoQ interview, Ryan gives us a glimpse into how he has been pushing the envelope of what's possible with the Ruby language and runtime since 2000.