HAppS Experiences

Last year I was working on a series on how to use HAppS, a haskell web applications framework, to build simple webapps. I was basing that series on my experiences developing the new version of the Openomy apis, which we finally launched a few weeks ago!

HAppS is a pretty nice framework.. even though its meant to be for generic web apps, I really think that building REST apis is its sweet spot: it's really good at generating xml out of your haskell types, and the HaXml xml parsing library is one of the nicest ones I've ever used (using combinators really beats hand rolling a SAX parser or hammering out an XSD).

Unfortunately, HAppS is moving very very quickly. The posts I wrote last March are almost completely obsolete now. We ended up having to rewrite a sizable chunk of the API service when we upgraded to the much nicer HAppS 0.9.1.

Ian wrote up some more details about our experience on the Openomy blog.