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GHC 9.10.3 · lts/ghc-9.10.x · 248f8f0 · 2026-10-05

Modulesemigroupoids-6.0.1Haskell2010

Data.Semigroupoid

A semigroupoid satisfies all of the requirements to be a Category except for the existence of identity arrows.

  • 2 types
  • 1 class
classclass Semigroupoid (c :: k -> k -> Type) where
#

Category sans id

Methods

  • o :: c j k1 -> c i j -> c i k1
Instances16Semigroupoid, …