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https://github.com/jberryman/cofunctor

A small haskell module implementing contravariant functors
https://github.com/jberryman/cofunctor

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A small haskell module implementing contravariant functors

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README

        

*DEPRECATED*: please use the 'contravariant' package, here:
http://hackage.haskell.org/package/contravariant

This is a simple Haskell library providing a contravariant functor class
implementation, a useful construction for type that act as "sinks" or expose the
left-hand side of a function.

Can be installed with:

cabal install cofunctor

See docs here: http://hackage.haskell.org/package/cofunctor