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|Original author(s)||Alex Jacobson|
7.0 / March 29, 2012
|Operating system||Portable (requires GHC and libraries)|
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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.
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.") among others.
Relation to HAppS
Happstack is the continuation of the HAppS project. 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.
Other articles of the topic Free software : OpenSIPS, Open-source-software movement, DHTMLX, RDUINOScope, AliSQL, ZenCash (cryptocurrency), Pigment (software)
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- Staged event-driven architecture (SEDA)
- 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
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