Hackage :: [Package]

kan-extensions: Kan extensions, Kan lifts, various forms of the Yoneda lemma, and (co)density (co)monads

[ bsd3, comonads, data-structures, functors, library, monads ] [ Propose Tags ] [ Report a vulnerability ]

Kan extensions, Kan lifts, various forms of the Yoneda lemma, and (co)density (co)monads

[Skip to Readme]

Downloads

Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

Maintainer's Corner

Package maintainers

For package maintainers and hackage trustees

Candidates

  • No Candidates
Versions [RSS] 0.1, 0.1.1, 0.1.2, 0.2, 0.2.1, 0.2.2, 0.5.0, 0.5.1, 1.8.0, 1.9.0, 2.0.0, 2.0.0.1, 2.0.0.2, 2.0.0.3, 2.0.1, 2.0.2, 2.1, 2.1.2, 2.2, 2.3, 2.4, 2.4.0.1, 2.5, 2.6, 2.7, 3.0, 3.1, 3.1.0.1, 3.1.0.2, 3.1.1, 3.1.2, 3.4, 3.5, 3.5.1, 3.6, 3.6.2, 3.7, 4.0, 4.0.1, 4.0.2, 4.0.3, 4.1, 4.1.0.1, 4.1.1, 4.2, 4.2.1, 4.2.2, 4.2.3, 5, 5.0.1, 5.0.2, 5.1, 5.2, 5.2.1, 5.2.2, 5.2.3, 5.2.4, 5.2.5, 5.2.6, 5.2.7, 5.2.8
Change log CHANGELOG.markdown
Dependencies adjunctions (>=3.0.0.1 && <4), array (>=0.3.0.2 && <0.5), base (>=4.4 && <5), comonad (>=3 && <4), comonad-transformers (>=3 && <4), comonads-fd (>=3 && <4), containers (>=0.4 && <0.6), contravariant (>=0.2.0.1 && <1), distributive (>=0.2.2 && <1), free (>=3 && <4), keys (>=3 && <4), mtl (>=2.0.1 && <2.2), pointed (>=3 && <4), representable-functors (>=3.0.0.1 && <4), semigroupoids (>=3 && <4), speculation (>=1.4.1 && <2), transformers (>=0.2 && <0.4) [details]
License BSD-3-Clause
Copyright Copyright (C) 2008-2013 Edward A. Kmett
Author Edward A. Kmett
Maintainer Edward A. Kmett <ekmett@gmail.com>
Uploaded by EdwardKmett at 2013-08-07T17:59:39Z
Revised Revision 1 made by HerbertValerioRiedel at 2015-01-08T11:59:27Z
Category Data Structures, Monads, Comonads, Functors
Home page http://github.com/ekmett/kan-extensions/
Bug tracker http://github.com/ekmett/kan-extensions/issues
Source repo head: git clone git://github.com/ekmett/kan-extensions.git
Distributions Arch:5.2.7, Debian:5.2, Fedora:5.2.6, FreeBSD:4.2.2, LTSHaskell:5.2.8, NixOS:5.2.7, Stackage:5.2.8, openSUSE:5.2.7
Reverse Dependencies 50 direct, 8560 indirect [details]
Downloads 151250 total (226 in the last 30 days)
Rating 2.25 (votes: 3) [estimated by Bayesian average]
Your Rating
  • λ
  • λ
  • λ
Status Docs uploaded by user
Build status unknown [no reports yet]

Readme for kan-extensions-3.6.2

[back to package description]

kan-extensions

Build Status

This package provides tools for working with various Kan extensions and Kan lifts in Haskell.

Among the interesting bits included are:

  • Right and left Kan extensions (Ran and Lan)
  • Right and left Kan lifts (Rift and Lift)
  • Multiple forms of the Yoneda lemma (Yoneda)
  • The Codensity monad, which can be used to improve the asymptotic complexity of code over free monads (Codensity, Density)
  • A "comonad to monad-transformer transformer" that is a special case of a right Kan lift. (CoT, Co)

Contact Information

Contributions and bug reports are welcome!

Please feel free to contact me through github or on the #haskell IRC channel on irc.freenode.net.

-Edward Kmett