Yesod is a Haskell web framework for productive development of type-safe, RESTful, high performance web applications. March 22, 2016By Michael SnoymanView source on Github This blog post came out of some discussions I had with my coworkers at FP Complete. I realized I have a number of reasons I prefer working with a typeclass based libraries (such as classy-prelude) that I've never put down in wri