Snap (web framework)

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Snap
Original authorsGregory Collins, Doug Beardsley[1]
DeveloperSnap Team
Initial releaseMay 2010; 15 years ago (2010-05)
Stable release
1.1.3.2[2] / July 19, 2023; 2 years ago (2023-07-19)
Repositorygithub.com/snapframework
Written inHaskell
Engine
    Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value).
    Operating systemCross-platform: Unix, Unix-like, macOS; Windows NT
    PlatformIA-32, x86-64
    Available inEnglish
    TypeWeb framework
    LicenseBSD
    Websitesnapframework.com

    Snap is a web framework for developing web applications written in the functional programming language Haskell.[3][4]

    Overview

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    The Snap framework consists of the following:

    • snap-core,[5] a generic Haskell web server API.
    • snap-server,[6] a fast[7] HTTP server that implements the snap-core interface.
    • Heist,[8] an HTML-based templating system for generating pages that allows you to bind Haskell functionality to HTML tags for a clean separation of view and backend code, much like Lift's snippets. Heist is self-contained and can be used independently.
    • Snaplets,[9] a high-level system for building modular web applications.
    • Built-in snaplets for templating, session management, and authentication.
    • Third party snaplets for features including file uploads, database connectivity (PostgreSQL, MongoDB, etc.), generation of JavaScript from Haskell code, and more.
    • The Snap monad for stateful access to HTTP requests and responses.[10]

    Snap runs on both Windows NT and Unix-like platforms. Snap uses the Iteratee input/output (I/O) model,[11] As of version 1.0, its I/O is implemented with io-streams.

    Usage

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    Snap is used by Silk,[12] JanRain,[13][14] Racemetric,[15] Lee Paste's Financial Blog,[16][17] SooStone Inc, and Group Commerce. Snap is also used as a lightweight, standalone Haskell server. The static site generator Hakyll uses Snap for its preview mode.[18]

    Other Haskell web frameworks

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    References

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