Snap (web framework)

Snap is a web development framework written in the Haskell programming language.[3][4]

Snap
Original author(s)Gregory Collins, Doug Beardsley[1]
Developer(s)Snap Team
Initial releaseMay 2010
Stable release
1.1.3.0[2] / May 7, 2020 (2020-05-07)
RepositorySnap Repository
Written inHaskell
Operating systemCross-platform
TypeWeb framework
LicenseBSD License
Websitewww.snapframework.com

Overview

The Snap framework comprises:

  • 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 completely 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 such as 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 and *nix platforms. Snap uses the Iteratee I/O model,[11] As of version 1.0, its i/o is implemented with io-streams.

Usage

It is used by Silk,[12] JanRain,[13][14] Racemetric,[15] www.lpaste.net,[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

References
  1. Team, The Snap Framework. "Snap: A Haskell Web Framework: About". snapframework.com.
  2. Team, The Snap Framework. "Snap: A Haskell Web Framework: Github: Release: Snap 1.1.3.0". github.com.
  3. Collins, Gregory; Beardsley, Doug (Jan–Feb 2011). "The Snap Framework: A Web Toolkit for Haskell" (PDF). IEEE Internet Computing. 15 (1): 84–87. doi:10.1109/mic.2011.21.
  4. Biscardi, Chris (2014). Snap for Beginners. Gumroad.
  5. "snap-core". www.hackage.org.
  6. "snap-server". www.hackage.org.
  7. "Snap 0.3 benchmarks with GHC 7.0.1". www.snapframework.com. Retrieved 2014-03-02.
  8. Team, The Snap Framework. "Snap: A Haskell Web Framework: Heist Tutorial". snapframework.com.
  9. Team, The Snap Framework. "Snap: A Haskell Web Framework: Snaplet Directory". snapframework.com.
  10. "Snap.Core". hackage.haskell.org.
  11. "InfoQ Interview: Gregory Collins on High Performance Web Apps with Snap and Haskell". Sep 12, 2011.
  12. "FP Complete Case Study - Silk -- Structured Content Management" (PDF). FP Complete. Retrieved 2014-03-02.
  13. "FP Complete Case Study - JanRain -- User Management System" (PDF). FP Complete. Retrieved 2014-03-02.
  14. "Blog tutorial on Snap and PostgreSQL". JanRain. Retrieved 2014-03-02.
  15. "Haskell Snap App in Production". Luke Hoersten. Retrieved 2014-03-02.
  16. "New paste". www.lpaste.net.
  17. "lpaste source code". Chris Done. Retrieved 2014-03-02.
  18. "Hakyll - Home". jaspervdj.be.
  19. "scotty: Haskell web framework inspired by Ruby's Sinatra, using WAI and Warp". Hackage.
  20. "Spock: Another Haskell web framework for rapid development". Hackage.
  21. "MFlow: stateful, RESTful web framework". Hackage.
  22. "miso: A tasty Haskell front-end framework". Hackage.
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