category-extras-0.53.5: Various modules and constructs inspired by category theorySource codeContentsIndex
Control.Functor.Contra
Portabilityportable
Stabilityexperimental
MaintainerEdward Kmett <ekmett@gmail.com>
Description
Documentation
class ContraFunctor f whereSource
Methods
contramap :: (a -> b) -> f b -> f aSource
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newtype ContraF a b Source
Constructors
ContraF
runContraF :: b -> a
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