Module
Control.Category
- Package
- purescript-prelude
- Repository
- purescript/purescript-prelude
#Category Source
class (Semigroupoid a) <= Category a whereCategorys consist of objects and composable morphisms between them, and
as such are Semigroupoids, but unlike semigroupoids
must have an identity element.
Instances must satisfy the following law in addition to the
Semigroupoid law:
- Identity:
identity <<< p = p <<< identity = p
Members
identity :: forall t. a t t
Instances
Re-exports from Control.Semigroupoid
#Semigroupoid Source
class Semigroupoid a whereA Semigroupoid is similar to a Category but does not
require an identity element identity, just composable morphisms.
Semigroupoids must satisfy the following law:
- Associativity:
p <<< (q <<< r) = (p <<< q) <<< r
One example of a Semigroupoid is the function type constructor (->),
with (<<<) defined as function composition.
Members
compose :: forall d c b. a c d -> a b c -> a b d
Instances
- Modules
- Control.
Applicative - Control.
Apply - Control.
Bind - Control.
Category - Control.
Monad - Control.
Semigroupoid - Data.
Boolean - Data.
BooleanAlgebra - Data.
Bounded - Data.
CommutativeRing - Data.
DivisionRing - Data.
Eq - Data.
EuclideanRing - Data.
Field - Data.
Function - Data.
Functor - Data.
HeytingAlgebra - Data.
Monoid - Data.
Monoid. Additive - Data.
Monoid. Conj - Data.
Monoid. Disj - Data.
Monoid. Dual - Data.
Monoid. Endo - Data.
Monoid. Multiplicative - Data.
NaturalTransformation - Data.
Ord - Data.
Ord. Unsafe - Data.
Ordering - Data.
Ring - Data.
Semigroup - Data.
Semigroup. First - Data.
Semigroup. Last - Data.
Semiring - Data.
Show - Data.
Symbol - Data.
Unit - Data.
Void - Prelude
- Record.
Unsafe - Type.
Data. Row - Type.
Data. RowList