This group is for anyone interested in the Haskell programming language (or functional programming in general). Come join us, whether you're just getting started or eat, sleep, and breathe Haskell! Events include talks as well as hack sessions and social hours. Our goal is to create a community of D.C. area Haskellers who share with and learn from each other.
I recently started a new prototype called reactive institutions. I have some working Haskell code that I can show. Institutions were first specified by Goguen and Burstall and serve as excellent application of category theory. Institutions have a small but dedicated following. Reactive institutions use arrows and functional reactive programming to simulate institutions. The prototype is still very small, but worth checking out.