either: Haskell 98 either monad transformer

[ bsd3, control, library, monads ] [ Propose Tags ]

Haskell 98 either monad transformer


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Versions [faq] 0.1, 0.2.1, 0.2.2, 0.2.2.1, 0.2.2.2, 0.2.2.3, 0.2.3, 0.2.3.1, 0.3, 0.3.0.1, 3.0, 3.0.1, 3.0.2, 3.0.3, 3.1, 3.2, 3.3, 3.4, 3.4.1, 3.4.2, 4.0, 4.1, 4.1.1, 4.1.2, 4.3, 4.3.0.1, 4.3.0.2, 4.3.1, 4.3.2, 4.3.2.1, 4.3.3, 4.3.3.1, 4.3.3.2, 4.3.4, 4.3.4.1, 4.4, 4.4.1, 4.4.1.1, 4.5, 5, 5.0.1, 5.0.1.1
Dependencies base (==4.*), semigroupoids (==3.0.*), semigroups (>=0.8.3.1 && <0.9), transformers (>=0.2 && <0.4) [details]
License BSD-3-Clause
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/either/
Bug tracker http://github.com/ekmett/either/issues
Source repo head: git clone git://github.com/ekmett/either.git
Uploaded by EdwardKmett at Sat Jul 14 02:37:21 UTC 2012
Distributions Arch:5.0.1.1, Debian:5.0.1, FreeBSD:4.4.1, LTSHaskell:5.0.1.1, NixOS:5.0.1.1, Stackage:5.0.1.1, openSUSE:5.0.1.1
Downloads 95257 total (850 in the last 30 days)
Rating 2.0 (votes: 1) [estimated by rule of succession]
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Readme for either-3.0.2

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either

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This provides an either monad transformer that unlike ErrorT is unencumbered by a constraint on its left hand argument. This is needed for a number of applications of this monad transformer, notably in recursion schemes.

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