ekmett/contravariant

Haskell 98 contravariant functors

Haskell

74

201 commits

updated Jan 10, 2026

hackage.haskell.org/package/contravariant

README

contravariant

Haskell 98 contravariant functors

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

Contributors

110 commits

59 commits

8 commits

3 commits

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ekmett/contravariant

Haskell 98 contravariant functors

Haskell

74

201 commits

updated Jan 10, 2026

hackage.haskell.org/package/contravariant

README

contravariant

Haskell 98 contravariant functors

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

Similar repos

ekmett/profunctors

Haskell 98 Profunctors

72

ekmett/bifunctors

Haskell 98 bifunctors, bifoldables and bitraversables

59

ekmett/constraints

Tools for programming with ConstraintKinds in GHC

77

ekmett/either

the EitherT monad transformer

60

ekmett/free

free monads

190

ekmett/hask

Category theory for Haskell with a lens flavor (you need GHC 7.8.3, not 7.8.2 to build this!)

163

ekmett/distributive

Dual Traversable

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ekmett/algebra

constructive abstract algebra

106

Contributors

110 commits

59 commits

8 commits

3 commits

Languages

Haskell

100.0%