either: Combinators for working with sums

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Combinators for working with sums.

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Versions0.1, 0.2.1, 0.2.2,,,, 0.2.3,, 0.3,, 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,,, 4.3.1, 4.3.2,, 4.3.3,,, 4.3.4,, 4.4, 4.4.1,, 4.5, 5, 5, 5.0.1,
Change logCHANGELOG.markdown
Dependenciesbase (==4.*), bifunctors (>=4 && <6), mtl (>=2.0 && <2.3), profunctors (>=4 && <6), semigroupoids (>=4 && <6), semigroups (>= && <1) [details]
CopyrightCopyright (C) 2008-2017 Edward A. Kmett
AuthorEdward A. Kmett
MaintainerEdward A. Kmett <ekmett@gmail.com>
CategoryControl, Monads
Home pagehttp://github.com/ekmett/either/
Bug trackerhttp://github.com/ekmett/either/issues
Source repositoryhead: git clone git://github.com/ekmett/either.git
UploadedTue Nov 21 03:04:21 UTC 2017 by EdwardKmett




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Readme for either-5

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Hackage Build Status

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