Ready for some functional thinking? While at NDC in Sydney, Carl and Richard chatted with Daniel Chambers about his experiences in functional programming, starting with F# and moving to Haskell. Daniel talks about how F# serves as the gateway drug for functional programming, living within Visual Studio and still interoperating nicely with the object-oriented world. But sometimes you want pure functional, and Haskell can help you - communicating with it via web service models, you write purely functional, immutable code. The tooling is a bit different, but the benefits are significant!