Happstack
| Original author(s) | Alex Jacobson |
|---|---|
| Stable release | 7.0 / March 29, 2012 |
| Development status | Beta |
| Operating system | Portable (requires GHC and libraries) |
| Platform | Portable |
| Available in | Haskell |
| Type | Application server |
| License | BSD-3 |
| Website | http://www.happstack.com/ |
Happstack (Haskell Application Stack) is a free application server for websites written in the functional programming language Haskell. It integrates handling Web, persistence, XML/XSLT, and templating functionality.[1]
It makes use of a number of Haskell libraries and systems such as Parsec, Cabal, Template Haskell, and monad transformers ("Your app then is just a set of state transformer functions (in the MACID Monad) that take an event and state as input and that evaluate to a new state, a response, and a (possibly null) set of sideeffects."[1]) among others.
Relation to HAppS
Happstack is the continuation of the HAppS project.[2] The project name was changed to highlight the transition to a more open development model and a change in project leadership. The transition was made with the blessing of Alex Jacobson, and the HAppS developers are still involved in the coding.
See also
References
External links
- Happstack Maintained, current version
- HAppS homepage
- Author of HAppS Alex Jacobson presenting HAppS to the Bay Area Functional Programmers group (video & slides)
- Haskell Application Server - HAppS
- "Case Study: Using Haskell and HAppS for Openomy API v2.0"
- Self-Demoing Cabal Installable HAppS Tutorial