Copyright | (C) 2007-2015 Edward Kmett |
---|---|
License | BSD-style (see the file LICENSE) |
Maintainer | Edward Kmett <ekmett@gmail.com> |
Stability | provisional |
Portability | portable |
Safe Haskell | Safe |
Language | Haskell2010 |
Data.Semigroupoid.Dual
Description
A semigroupoid satisfies all of the requirements to be a Category except for the existence of identity arrows.
Documentation
Instances
Category k2 => Category (Dual k2 :: k1 -> k1 -> Type) # | |
Groupoid k2 => Groupoid (Dual k2 :: k1 -> k1 -> Type) # | |
Defined in Data.Groupoid | |
Semigroupoid k2 => Semigroupoid (Dual k2 :: k1 -> k1 -> Type) # | |