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Original author(s)Alex Jacobson
Stable release
7.0 / March 29, 2012 (2012-03-29)
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Operating systemPortable (requires GHC and libraries)
Available inHaskell
TypeApplication server

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[edit | edit source]

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[edit | edit source]

Others articles of the Topic Free software : MediaWiki, ArkhamJS, RandR, JQuarks, Open-source model, wmii, IPFire
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References[edit | edit source]

External links[edit | edit source]

This article "Happstack" is from Wikipedia. The list of its authors can be seen in its historical and/or the page Edithistory:Happstack. Articles copied from Draft Namespace on Wikipedia could be seen on the Draft Namespace of Wikipedia and not main one.

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