W3cubDocs

/Haskell 8

Data.Functor.Const

Copyright Conor McBride and Ross Paterson 2005
License BSD-style (see the LICENSE file in the distribution)
Maintainer [email protected]
Stability experimental
Portability portable
Safe Haskell Trustworthy
Language Haskell2010

Description

newtype Const a b Source

The Const functor.

Constructors

Const

Fields

Instances
Generic1 (Const a :: k -> Type)
Instance details

Defined in Data.Functor.Const

Associated Types

type Rep1 (Const a) :: k -> Type Source

Methods

from1 :: Const a a0 -> Rep1 (Const a) a0 Source

to1 :: Rep1 (Const a) a0 -> Const a a0 Source

Show2 (Const :: Type -> Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftShowsPrec2 :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> (Int -> b -> ShowS) -> ([b] -> ShowS) -> Int -> Const a b -> ShowS Source

liftShowList2 :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> (Int -> b -> ShowS) -> ([b] -> ShowS) -> [Const a b] -> ShowS Source

Read2 (Const :: Type -> Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftReadsPrec2 :: (Int -> ReadS a) -> ReadS [a] -> (Int -> ReadS b) -> ReadS [b] -> Int -> ReadS (Const a b) Source

liftReadList2 :: (Int -> ReadS a) -> ReadS [a] -> (Int -> ReadS b) -> ReadS [b] -> ReadS [Const a b] Source

liftReadPrec2 :: ReadPrec a -> ReadPrec [a] -> ReadPrec b -> ReadPrec [b] -> ReadPrec (Const a b) Source

liftReadListPrec2 :: ReadPrec a -> ReadPrec [a] -> ReadPrec b -> ReadPrec [b] -> ReadPrec [Const a b] Source

Ord2 (Const :: Type -> Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftCompare2 :: (a -> b -> Ordering) -> (c -> d -> Ordering) -> Const a c -> Const b d -> Ordering Source

Eq2 (Const :: Type -> Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftEq2 :: (a -> b -> Bool) -> (c -> d -> Bool) -> Const a c -> Const b d -> Bool Source

Bifunctor (Const :: Type -> Type -> Type)

Since: base-4.8.0.0

Instance details

Defined in Data.Bifunctor

Methods

bimap :: (a -> b) -> (c -> d) -> Const a c -> Const b d Source

first :: (a -> b) -> Const a c -> Const b c Source

second :: (b -> c) -> Const a b -> Const a c Source

Bifoldable (Const :: Type -> Type -> Type)

Since: base-4.10.0.0

Instance details

Defined in Data.Bifoldable

Methods

bifold :: Monoid m => Const m m -> m Source

bifoldMap :: Monoid m => (a -> m) -> (b -> m) -> Const a b -> m Source

bifoldr :: (a -> c -> c) -> (b -> c -> c) -> c -> Const a b -> c Source

bifoldl :: (c -> a -> c) -> (c -> b -> c) -> c -> Const a b -> c Source

Bitraversable (Const :: Type -> Type -> Type)

Since: base-4.10.0.0

Instance details

Defined in Data.Bitraversable

Methods

bitraverse :: Applicative f => (a -> f c) -> (b -> f d) -> Const a b -> f (Const c d) Source

Functor (Const m :: Type -> Type)

Since: base-2.1

Instance details

Defined in Data.Functor.Const

Methods

fmap :: (a -> b) -> Const m a -> Const m b Source

(<$) :: a -> Const m b -> Const m a Source

Monoid m => Applicative (Const m :: Type -> Type)

Since: base-2.0.1

Instance details

Defined in Data.Functor.Const

Methods

pure :: a -> Const m a Source

(<*>) :: Const m (a -> b) -> Const m a -> Const m b Source

liftA2 :: (a -> b -> c) -> Const m a -> Const m b -> Const m c Source

(*>) :: Const m a -> Const m b -> Const m b Source

(<*) :: Const m a -> Const m b -> Const m a Source

Foldable (Const m :: Type -> Type)

Since: base-4.7.0.0

Instance details

Defined in Data.Functor.Const

Methods

fold :: Monoid m0 => Const m m0 -> m0 Source

foldMap :: Monoid m0 => (a -> m0) -> Const m a -> m0 Source

foldr :: (a -> b -> b) -> b -> Const m a -> b Source

foldr' :: (a -> b -> b) -> b -> Const m a -> b Source

foldl :: (b -> a -> b) -> b -> Const m a -> b Source

foldl' :: (b -> a -> b) -> b -> Const m a -> b Source

foldr1 :: (a -> a -> a) -> Const m a -> a Source

foldl1 :: (a -> a -> a) -> Const m a -> a Source

toList :: Const m a -> [a] Source

null :: Const m a -> Bool Source

length :: Const m a -> Int Source

elem :: Eq a => a -> Const m a -> Bool Source

maximum :: Ord a => Const m a -> a Source

minimum :: Ord a => Const m a -> a Source

sum :: Num a => Const m a -> a Source

product :: Num a => Const m a -> a Source

Traversable (Const m :: Type -> Type)

Since: base-4.7.0.0

Instance details

Defined in Data.Traversable

Methods

traverse :: Applicative f => (a -> f b) -> Const m a -> f (Const m b) Source

sequenceA :: Applicative f => Const m (f a) -> f (Const m a) Source

mapM :: Monad m0 => (a -> m0 b) -> Const m a -> m0 (Const m b) Source

sequence :: Monad m0 => Const m (m0 a) -> m0 (Const m a) Source

Show a => Show1 (Const a :: Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftShowsPrec :: (Int -> a0 -> ShowS) -> ([a0] -> ShowS) -> Int -> Const a a0 -> ShowS Source

liftShowList :: (Int -> a0 -> ShowS) -> ([a0] -> ShowS) -> [Const a a0] -> ShowS Source

Read a => Read1 (Const a :: Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftReadsPrec :: (Int -> ReadS a0) -> ReadS [a0] -> Int -> ReadS (Const a a0) Source

liftReadList :: (Int -> ReadS a0) -> ReadS [a0] -> ReadS [Const a a0] Source

liftReadPrec :: ReadPrec a0 -> ReadPrec [a0] -> ReadPrec (Const a a0) Source

liftReadListPrec :: ReadPrec a0 -> ReadPrec [a0] -> ReadPrec [Const a a0] Source

Ord a => Ord1 (Const a :: Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftCompare :: (a0 -> b -> Ordering) -> Const a a0 -> Const a b -> Ordering Source

Eq a => Eq1 (Const a :: Type -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Classes

Methods

liftEq :: (a0 -> b -> Bool) -> Const a a0 -> Const a b -> Bool Source

Contravariant (Const a :: Type -> Type)
Instance details

Defined in Data.Functor.Contravariant

Methods

contramap :: (a0 -> b) -> Const a b -> Const a a0 Source

(>$) :: b -> Const a b -> Const a a0 Source

Bounded a => Bounded (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

minBound :: Const a b Source

maxBound :: Const a b Source

Enum a => Enum (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

succ :: Const a b -> Const a b Source

pred :: Const a b -> Const a b Source

toEnum :: Int -> Const a b Source

fromEnum :: Const a b -> Int Source

enumFrom :: Const a b -> [Const a b] Source

enumFromThen :: Const a b -> Const a b -> [Const a b] Source

enumFromTo :: Const a b -> Const a b -> [Const a b] Source

enumFromThenTo :: Const a b -> Const a b -> Const a b -> [Const a b] Source

Eq a => Eq (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

(==) :: Const a b -> Const a b -> Bool Source

(/=) :: Const a b -> Const a b -> Bool Source

Floating a => Floating (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

pi :: Const a b Source

exp :: Const a b -> Const a b Source

log :: Const a b -> Const a b Source

sqrt :: Const a b -> Const a b Source

(**) :: Const a b -> Const a b -> Const a b Source

logBase :: Const a b -> Const a b -> Const a b Source

sin :: Const a b -> Const a b Source

cos :: Const a b -> Const a b Source

tan :: Const a b -> Const a b Source

asin :: Const a b -> Const a b Source

acos :: Const a b -> Const a b Source

atan :: Const a b -> Const a b Source

sinh :: Const a b -> Const a b Source

cosh :: Const a b -> Const a b Source

tanh :: Const a b -> Const a b Source

asinh :: Const a b -> Const a b Source

acosh :: Const a b -> Const a b Source

atanh :: Const a b -> Const a b Source

log1p :: Const a b -> Const a b Source

expm1 :: Const a b -> Const a b Source

log1pexp :: Const a b -> Const a b Source

log1mexp :: Const a b -> Const a b Source

Fractional a => Fractional (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

(/) :: Const a b -> Const a b -> Const a b Source

recip :: Const a b -> Const a b Source

fromRational :: Rational -> Const a b Source

Integral a => Integral (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

quot :: Const a b -> Const a b -> Const a b Source

rem :: Const a b -> Const a b -> Const a b Source

div :: Const a b -> Const a b -> Const a b Source

mod :: Const a b -> Const a b -> Const a b Source

quotRem :: Const a b -> Const a b -> (Const a b, Const a b) Source

divMod :: Const a b -> Const a b -> (Const a b, Const a b) Source

toInteger :: Const a b -> Integer Source

(Typeable k, Data a, Typeable b) => Data (Const a b)

Since: base-4.10.0.0

Instance details

Defined in Data.Data

Methods

gfoldl :: (forall d b0. Data d => c (d -> b0) -> d -> c b0) -> (forall g. g -> c g) -> Const a b -> c (Const a b) Source

gunfold :: (forall b0 r. Data b0 => c (b0 -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Const a b) Source

toConstr :: Const a b -> Constr Source

dataTypeOf :: Const a b -> DataType Source

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Const a b)) Source

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Const a b)) Source

gmapT :: (forall b0. Data b0 => b0 -> b0) -> Const a b -> Const a b Source

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Const a b -> r Source

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Const a b -> r Source

gmapQ :: (forall d. Data d => d -> u) -> Const a b -> [u] Source

gmapQi :: Int -> (forall d. Data d => d -> u) -> Const a b -> u Source

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Const a b -> m (Const a b) Source

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Const a b -> m (Const a b) Source

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Const a b -> m (Const a b) Source

Num a => Num (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

(+) :: Const a b -> Const a b -> Const a b Source

(-) :: Const a b -> Const a b -> Const a b Source

(*) :: Const a b -> Const a b -> Const a b Source

negate :: Const a b -> Const a b Source

abs :: Const a b -> Const a b Source

signum :: Const a b -> Const a b Source

fromInteger :: Integer -> Const a b Source

Ord a => Ord (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

compare :: Const a b -> Const a b -> Ordering Source

(<) :: Const a b -> Const a b -> Bool Source

(<=) :: Const a b -> Const a b -> Bool Source

(>) :: Const a b -> Const a b -> Bool Source

(>=) :: Const a b -> Const a b -> Bool Source

max :: Const a b -> Const a b -> Const a b Source

min :: Const a b -> Const a b -> Const a b Source

Read a => Read (Const a b)

This instance would be equivalent to the derived instances of the Const newtype if the runConst field were removed

Since: base-4.8.0.0

Instance details

Defined in Data.Functor.Const

Real a => Real (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

toRational :: Const a b -> Rational Source

RealFloat a => RealFloat (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

RealFrac a => RealFrac (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

properFraction :: Integral b0 => Const a b -> (b0, Const a b) Source

truncate :: Integral b0 => Const a b -> b0 Source

round :: Integral b0 => Const a b -> b0 Source

ceiling :: Integral b0 => Const a b -> b0 Source

floor :: Integral b0 => Const a b -> b0 Source

Show a => Show (Const a b)

This instance would be equivalent to the derived instances of the Const newtype if the runConst field were removed

Since: base-4.8.0.0

Instance details

Defined in Data.Functor.Const

Methods

showsPrec :: Int -> Const a b -> ShowS Source

show :: Const a b -> String Source

showList :: [Const a b] -> ShowS Source

Ix a => Ix (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

range :: (Const a b, Const a b) -> [Const a b] Source

index :: (Const a b, Const a b) -> Const a b -> Int Source

unsafeIndex :: (Const a b, Const a b) -> Const a b -> Int

inRange :: (Const a b, Const a b) -> Const a b -> Bool Source

rangeSize :: (Const a b, Const a b) -> Int Source

unsafeRangeSize :: (Const a b, Const a b) -> Int

IsString a => IsString (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.String

Methods

fromString :: String -> Const a b Source

Generic (Const a b)
Instance details

Defined in Data.Functor.Const

Associated Types

type Rep (Const a b) :: Type -> Type Source

Methods

from :: Const a b -> Rep (Const a b) x Source

to :: Rep (Const a b) x -> Const a b Source

Semigroup a => Semigroup (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

(<>) :: Const a b -> Const a b -> Const a b Source

sconcat :: NonEmpty (Const a b) -> Const a b Source

stimes :: Integral b0 => b0 -> Const a b -> Const a b Source

Monoid a => Monoid (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

mempty :: Const a b Source

mappend :: Const a b -> Const a b -> Const a b Source

mconcat :: [Const a b] -> Const a b Source

FiniteBits a => FiniteBits (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Bits a => Bits (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

(.&.) :: Const a b -> Const a b -> Const a b Source

(.|.) :: Const a b -> Const a b -> Const a b Source

xor :: Const a b -> Const a b -> Const a b Source

complement :: Const a b -> Const a b Source

shift :: Const a b -> Int -> Const a b Source

rotate :: Const a b -> Int -> Const a b Source

zeroBits :: Const a b Source

bit :: Int -> Const a b Source

setBit :: Const a b -> Int -> Const a b Source

clearBit :: Const a b -> Int -> Const a b Source

complementBit :: Const a b -> Int -> Const a b Source

testBit :: Const a b -> Int -> Bool Source

bitSizeMaybe :: Const a b -> Maybe Int Source

bitSize :: Const a b -> Int Source

isSigned :: Const a b -> Bool Source

shiftL :: Const a b -> Int -> Const a b Source

unsafeShiftL :: Const a b -> Int -> Const a b Source

shiftR :: Const a b -> Int -> Const a b Source

unsafeShiftR :: Const a b -> Int -> Const a b Source

rotateL :: Const a b -> Int -> Const a b Source

rotateR :: Const a b -> Int -> Const a b Source

popCount :: Const a b -> Int Source

Storable a => Storable (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

sizeOf :: Const a b -> Int Source

alignment :: Const a b -> Int Source

peekElemOff :: Ptr (Const a b) -> Int -> IO (Const a b) Source

pokeElemOff :: Ptr (Const a b) -> Int -> Const a b -> IO () Source

peekByteOff :: Ptr b0 -> Int -> IO (Const a b) Source

pokeByteOff :: Ptr b0 -> Int -> Const a b -> IO () Source

peek :: Ptr (Const a b) -> IO (Const a b) Source

poke :: Ptr (Const a b) -> Const a b -> IO () Source

type Rep1 (Const a :: k -> Type)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

type Rep1 (Const a :: k -> Type) = D1 (MetaData "Const" "Data.Functor.Const" "base" True) (C1 (MetaCons "Const" PrefixI True) (S1 (MetaSel (Just "getConst") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 a)))
type Rep (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

type Rep (Const a b) = D1 (MetaData "Const" "Data.Functor.Const" "base" True) (C1 (MetaCons "Const" PrefixI True) (S1 (MetaSel (Just "getConst") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 a)))

© The University of Glasgow and others
Licensed under a BSD-style license (see top of the page).
https://downloads.haskell.org/~ghc/8.6.1/docs/html/libraries/base-4.12.0.0/Data-Functor-Const.html