The free package
Free monads are useful for many tree-like structures and domain specific languages.
A Monad n is a free Monad for f if every Monad homomorphism from n to another monad m is equivalent to a natural transformation from f to m.
Cofree comonads provide convenient ways to talk about branching streams and rose-trees, and can be used to annotate syntax trees.
A Comonad v is a cofree Comonad for f if every Comonad homomorphism another comonad w to v is equivalent to a natural transformation from w to f.
Properties
| Versions | 0.1.0, 0.1.1, 0.2.0, 0.2.1, 0.2.2, 0.2.3, 1.8.0, 1.8.0.1, 1.8.0.3, 1.8.0.4, 2.0, 2.0.1, 2.0.1.1, 2.0.2, 2.0.3, 2.1, 2.1.1, 2.1.1.1, 2.2, 3.0, 3.1, 3.1.1, 3.2, 3.3, 3.3.0.1, 3.3.0.2, 3.3.1, 3.4, 3.4.1, 3.4.2, 4.0, 4.1, 4.2, 4.4, 4.5, 4.6, 4.6.1, 4.7, 4.7.1, 4.8, 4.8.0.1, 4.9, 4.10.0.1, 4.11, 4.12, 4.12.1, 4.12.2, 4.12.3, 4.12.4 |
|---|---|
| Dependencies | base (>=4 && <4.7), bifunctors (==3.0.*), comonad (==3.0.*), comonad-transformers (==3.0.*), comonads-fd (==3.0.*), distributive (>=0.2.1 && <0.3), mtl (>=2.0.1.0 && <2.2), semigroupoids (==3.0.*), semigroups (>=0.8.3.1 && <0.9), transformers (>=0.2.0 && <0.4) [details] |
| License | BSD3 |
| Copyright | Copyright (C) 2008-2012 Edward A. Kmett |
| Author | Edward A. Kmett |
| Maintainer | Edward A. Kmett <ekmett@gmail.com> |
| Category | Control, Monads |
| Home page | http://github.com/ekmett/free/ |
| Bug tracker | http://github.com/ekmett/free/issues |
| Source repository | head: git clone git://github.com/ekmett/free.git |
| Uploaded | Wed Aug 15 00:31:28 UTC 2012 by EdwardKmett |
| Updated | Tue May 12 18:13:55 UTC 2015 by AdamBergmark to revision 1 |
| Distributions | Arch:4.12.4, Debian:4.12.1, FreeBSD:4.12.1, LTSHaskell:4.12.4, NixOS:4.12.4, Stackage:4.12.4, Tumbleweed:4.12.4 |
| Downloads | 123541 total (4777 in the last 30 days) |
| Votes | |
| Status | Docs uploaded by user Build status unknown [no reports yet] Hackage Matrix CI |
Downloads
- free-3.1.tar.gz [browse] (Cabal source package)
- Package description (included in the package)