License	BSD-style (see the file LICENSE)
Maintainer	sjoerd@w3future.com
Stability	experimental
Portability	non-portable
Safe Haskell	Safe
Language	Haskell2010

Data.Category.Unit

Description

Documentation

data Unit a b where Source #

Constructors

Unit :: Unit () ()

Instances

Category Unit Source #	`Unit` is the category with one object.
Instance details Defined in Data.Category.Unit Methods src :: Unit a b -> Obj Unit a Source # tgt :: Unit a b -> Obj Unit b Source # (.) :: Unit b c -> Unit a b -> Unit a c Source #
HasBinaryCoproducts Unit Source #	In the category of one object that object is its own coproduct.
Instance details Defined in Data.Category.Limit Associated Types type BinaryCoproduct Unit x y :: Type Source # Methods inj1 :: Obj Unit x -> Obj Unit y -> Unit x (BinaryCoproduct Unit x y) Source # inj2 :: Obj Unit x -> Obj Unit y -> Unit y (BinaryCoproduct Unit x y) Source # (\|\|\|) :: Unit x a -> Unit y a -> Unit (BinaryCoproduct Unit x y) a Source # (+++) :: Unit a1 b1 -> Unit a2 b2 -> Unit (BinaryCoproduct Unit a1 a2) (BinaryCoproduct Unit b1 b2) Source #
HasBinaryProducts Unit Source #	In the category of one object that object is its own product.
Instance details Defined in Data.Category.Limit Associated Types type BinaryProduct Unit x y :: Type Source # Methods proj1 :: Obj Unit x -> Obj Unit y -> Unit (BinaryProduct Unit x y) x Source # proj2 :: Obj Unit x -> Obj Unit y -> Unit (BinaryProduct Unit x y) y Source # (&&&) :: Unit a x -> Unit a y -> Unit a (BinaryProduct Unit x y) Source # (***) :: Unit a1 b1 -> Unit a2 b2 -> Unit (BinaryProduct Unit a1 a2) (BinaryProduct Unit b1 b2) Source #
HasInitialObject Unit Source #	The category of one object has that object as initial object.
Instance details Defined in Data.Category.Limit Associated Types type InitialObject Unit :: Type Source # Methods initialObject :: Obj Unit (InitialObject Unit) Source # initialize :: Obj Unit a -> Unit (InitialObject Unit) a Source #
HasTerminalObject Unit Source #	The category of one object has that object as terminal object.
Instance details Defined in Data.Category.Limit Associated Types type TerminalObject Unit :: Type Source # Methods terminalObject :: Obj Unit (TerminalObject Unit) Source # terminate :: Obj Unit a -> Unit a (TerminalObject Unit) Source #
CartesianClosed Unit Source #
Instance details Defined in Data.Category.CartesianClosed Associated Types type Exponential Unit y z :: Type Source # Methods apply :: Obj Unit y -> Obj Unit z -> Unit (BinaryProduct Unit (Exponential Unit y z) y) z Source # tuple :: Obj Unit y -> Obj Unit z -> Unit z (Exponential Unit y (BinaryProduct Unit z y)) Source # (^^^) :: Unit z1 z2 -> Unit y2 y1 -> Unit (Exponential Unit y1 z1) (Exponential Unit y2 z2) Source #
Category k => HasColimits Unit k Source #	The colimit of a single object is that object.
Instance details Defined in Data.Category.Limit Methods colimit :: Obj (Nat Unit k) f -> Cocone f (Colimit f) Source # colimitFactorizer :: Obj (Nat Unit k) f -> Cocone f n -> k (Colimit f) n Source #
Category k => HasLimits Unit k Source #	The limit of a single object is that object.
Instance details Defined in Data.Category.Limit Methods limit :: Obj (Nat Unit k) f -> Cone f (Limit f) Source # limitFactorizer :: Obj (Nat Unit k) f -> Cone f n -> k n (Limit f) Source #
type InitialObject Unit Source #
Instance details Defined in Data.Category.Limit type InitialObject Unit = ()
type TerminalObject Unit Source #
Instance details Defined in Data.Category.Limit type TerminalObject Unit = ()
type BinaryCoproduct Unit () () Source #
Instance details Defined in Data.Category.Limit type BinaryCoproduct Unit () () = ()
type BinaryProduct Unit () () Source #
Instance details Defined in Data.Category.Limit type BinaryProduct Unit () () = ()
type ColimitFam Unit k f Source #
Instance details Defined in Data.Category.Limit type ColimitFam Unit k f = f :% ()
type LimitFam Unit k f Source #
Instance details Defined in Data.Category.Limit type LimitFam Unit k f = f :% ()
type Exponential Unit () () Source #
Instance details Defined in Data.Category.CartesianClosed type Exponential Unit () () = ()