prologue-3.2.2: Better, more general Prelude exporting common utilities.

Safe HaskellNone
LanguageHaskell2010

Prologue.Data.Bifunctor

Documentation

mapFirst :: Bifunctor p => (a -> b) -> p a c -> p b c Source #

mapSecond :: Bifunctor p => (b -> c) -> p a b -> p a c Source #