@hackage contravariant1.5.5

Contravariant functors

contravariant

Haskell 98 contravariant functors

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

Installation
In your cabal file:
Tested Compilers
Dependencies (8)
- base <5
- ghc-prim
- transformers >=0.3 && <0.7
- StateVar >=1.2.1 && <1.3
- semigroups >=0.18.5 && <1
- tagged >=0.8.6.1 && <1
Dependents (135)
@hackage/theatre, @hackage/monad-choice, @hackage/box, @hackage/sv, @hackage/invariant, @hackage/postgres-websockets, Show all…

tagged

(on by default)

You can disable the use of the tagged package using `-f-tagged`.

Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.

semigroups

(on by default)

You can disable the use of the semigroups package using `-f-semigroups`.

Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.

statevar

(on by default)

You can disable the use of the StateVar package using `-f-StateVar`.

Disabling this is an unsupported configuration, but it may be useful for accelerating builds in sandboxes for expert users.