HORIZON HASKELLDocslts/ghc-10.0.xfc4e5982026-10-11Search names, modules, packages, or :: a typeCtrl K

GHC 10.0.0.20260917 · lts/ghc-10.0.x · fc4e598 · 2026-10-11

Modulesemigroupoids-6.0.2Haskell2010

Data.Groupoid

  • 1 class
classclass Semigroupoid k => Groupoid (k :: k1 -> k1 -> Type) where
#

semigroupoid with inverses. This technically should be a category with inverses, except we need to use Ob to define the valid objects for the category

Methods

  • inv :: k a b -> k b a
Instances5Groupoid