License	BSD-style (see the LICENSE file in the distribution)
Maintainer	libraries@haskell.org
Stability	experimental
Portability	not portable
Safe Haskell	Trustworthy
Language	Haskell2010

Data.Kind

Description

Basic kinds

Since: base-4.9.0.0

Synopsis

type Type = Type
data Constraint
data FUN

Documentation

type Type = Type Source #

The kind of types with lifted values. For example Int :: Type.

data Constraint Source #

The kind of constraints, like Show a

data FUN Source #

The builtin function type, written in infix form as a # m -> b. Values of this type are functions taking inputs of type a and producing outputs of type b. The multiplicity of the input is m.

Note that FUN m a b permits levity-polymorphism in both a and b, so that types like Int# -> Int# can still be well-kinded.

Instances

Instances details

Category (->) #	Since: base-3.0
Instance details Defined in Control.Category Methods id :: forall (a :: k). a -> a Source # (.) :: forall (b :: k) (c :: k) (a :: k). (b -> c) -> (a -> b) -> a -> c Source #
Show (a -> b) #	Since: base-2.1
Instance details Defined in Text.Show.Functions Methods showsPrec :: Int -> (a -> b) -> ShowS Source # show :: (a -> b) -> String Source # showList :: [a -> b] -> ShowS Source #
Semigroup b => Semigroup (a -> b) #	Since: base-4.9.0.0
Instance details Defined in GHC.Base Methods (<>) :: (a -> b) -> (a -> b) -> a -> b Source # sconcat :: NonEmpty (a -> b) -> a -> b Source # stimes :: Integral b0 => b0 -> (a -> b) -> a -> b Source #
Monoid b => Monoid (a -> b) #	Since: base-2.1
Instance details Defined in GHC.Base Methods mempty :: a -> b Source # mappend :: (a -> b) -> (a -> b) -> a -> b Source # mconcat :: [a -> b] -> a -> b Source #
ArrowLoop (->) #	Since: base-2.1
Instance details Defined in Control.Arrow Methods loop :: ((b, d) -> (c, d)) -> b -> c Source #
ArrowApply (->) #	Since: base-2.1
Instance details Defined in Control.Arrow Methods app :: (b -> c, b) -> c Source #
ArrowChoice (->) #	Since: base-2.1
Instance details Defined in Control.Arrow Methods left :: (b -> c) -> Either b d -> Either c d Source # right :: (b -> c) -> Either d b -> Either d c Source # (+++) :: (b -> c) -> (b' -> c') -> Either b b' -> Either c c' Source # (\|\|\|) :: (b -> d) -> (c -> d) -> Either b c -> d Source #
Arrow (->) #	Since: base-2.1
Instance details Defined in Control.Arrow Methods arr :: (b -> c) -> b -> c Source # first :: (b -> c) -> (b, d) -> (c, d) Source # second :: (b -> c) -> (d, b) -> (d, c) Source # (***) :: (b -> c) -> (b' -> c') -> (b, b') -> (c, c') Source # (&&&) :: (b -> c) -> (b -> c') -> b -> (c, c') Source #
(PrintfArg a, HPrintfType r) => HPrintfType (a -> r) #	Since: base-2.1
Instance details Defined in Text.Printf Methods hspr :: Handle -> String -> [UPrintf] -> a -> r
(PrintfArg a, PrintfType r) => PrintfType (a -> r) #	Since: base-2.1
Instance details Defined in Text.Printf Methods spr :: String -> [UPrintf] -> a -> r
Monad ((->) r) #	Since: base-2.1
Instance details Defined in GHC.Base Methods (>>=) :: (r -> a) -> (a -> r -> b) -> r -> b Source # (>>) :: (r -> a) -> (r -> b) -> r -> b Source # return :: a -> r -> a Source #
Functor ((->) r) #	Since: base-2.1
Instance details Defined in GHC.Base Methods fmap :: (a -> b) -> (r -> a) -> r -> b Source # (<$) :: a -> (r -> b) -> r -> a Source #
MonadFix ((->) r) #	Since: base-2.1
Instance details Defined in Control.Monad.Fix Methods mfix :: (a -> r -> a) -> r -> a Source #
Applicative ((->) r) #	Since: base-2.1
Instance details Defined in GHC.Base Methods pure :: a -> r -> a Source # (<>) :: (r -> (a -> b)) -> (r -> a) -> r -> b Source # liftA2 :: (a -> b -> c) -> (r -> a) -> (r -> b) -> r -> c Source # (>) :: (r -> a) -> (r -> b) -> r -> b Source # (<*) :: (r -> a) -> (r -> b) -> r -> a Source #