Copyright	(c) Ross Paterson 2014
License	BSD-style (see the file LICENSE)
Maintainer	libraries@haskell.org
Stability	experimental
Portability	portable
Safe Haskell	Safe
Language	Haskell2010

Data.Functor.Sum

Description

Sums, lifted to functors.

Since: base-4.9.0.0

Synopsis

data Sum f g a
- = InL (f a)
- | InR (g a)

Documentation

data Sum f g a Source #

Lifted sum of functors.

Constructors

InL (f a)
InR (g a)

Instances

Instances details

Generic1 (Sum f g :: k -> Type) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Associated Types type Rep1 (Sum f g) :: k -> Type Source # Methods from1 :: forall (a :: k0). Sum f g a -> Rep1 (Sum f g) a Source # to1 :: forall (a :: k0). Rep1 (Sum f g) a -> Sum f g a Source #
(Functor f, Functor g) => Functor (Sum f g) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods fmap :: (a -> b) -> Sum f g a -> Sum f g b Source # (<$) :: a -> Sum f g b -> Sum f g a Source #
(Foldable f, Foldable g) => Foldable (Sum f g) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods fold :: Monoid m => Sum f g m -> m Source # foldMap :: Monoid m => (a -> m) -> Sum f g a -> m Source # foldMap' :: Monoid m => (a -> m) -> Sum f g a -> m Source # foldr :: (a -> b -> b) -> b -> Sum f g a -> b Source # foldr' :: (a -> b -> b) -> b -> Sum f g a -> b Source # foldl :: (b -> a -> b) -> b -> Sum f g a -> b Source # foldl' :: (b -> a -> b) -> b -> Sum f g a -> b Source # foldr1 :: (a -> a -> a) -> Sum f g a -> a Source # foldl1 :: (a -> a -> a) -> Sum f g a -> a Source # toList :: Sum f g a -> [a] Source # null :: Sum f g a -> Bool Source # length :: Sum f g a -> Int Source # elem :: Eq a => a -> Sum f g a -> Bool Source # maximum :: Ord a => Sum f g a -> a Source # minimum :: Ord a => Sum f g a -> a Source # sum :: Num a => Sum f g a -> a Source # product :: Num a => Sum f g a -> a Source #
(Traversable f, Traversable g) => Traversable (Sum f g) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods traverse :: Applicative f0 => (a -> f0 b) -> Sum f g a -> f0 (Sum f g b) Source # sequenceA :: Applicative f0 => Sum f g (f0 a) -> f0 (Sum f g a) Source # mapM :: Monad m => (a -> m b) -> Sum f g a -> m (Sum f g b) Source # sequence :: Monad m => Sum f g (m a) -> m (Sum f g a) Source #
(Show1 f, Show1 g) => Show1 (Sum f g) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods liftShowsPrec :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> Int -> Sum f g a -> ShowS Source # liftShowList :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> [Sum f g a] -> ShowS Source #
(Read1 f, Read1 g) => Read1 (Sum f g) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods liftReadsPrec :: (Int -> ReadS a) -> ReadS [a] -> Int -> ReadS (Sum f g a) Source # liftReadList :: (Int -> ReadS a) -> ReadS [a] -> ReadS [Sum f g a] Source # liftReadPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec (Sum f g a) Source # liftReadListPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec [Sum f g a] Source #
(Ord1 f, Ord1 g) => Ord1 (Sum f g) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods liftCompare :: (a -> b -> Ordering) -> Sum f g a -> Sum f g b -> Ordering Source #
(Eq1 f, Eq1 g) => Eq1 (Sum f g) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods liftEq :: (a -> b -> Bool) -> Sum f g a -> Sum f g b -> Bool Source #
(Contravariant f, Contravariant g) => Contravariant (Sum f g) Source #
Instance details Defined in Data.Functor.Contravariant Methods contramap :: (a -> b) -> Sum f g b -> Sum f g a Source # (>$) :: b -> Sum f g b -> Sum f g a Source #
(Eq1 f, Eq1 g, Eq a) => Eq (Sum f g a) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods (==) :: Sum f g a -> Sum f g a -> Bool Source # (/=) :: Sum f g a -> Sum f g a -> Bool Source #
(Typeable a, Typeable f, Typeable g, Typeable k, Data (f a), Data (g a)) => Data (Sum f g a) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g0. g0 -> c g0) -> Sum f g a -> c (Sum f g a) Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Sum f g a) Source # toConstr :: Sum f g a -> Constr Source # dataTypeOf :: Sum f g a -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Sum f g a)) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Sum f g a)) Source # gmapT :: (forall b. Data b => b -> b) -> Sum f g a -> Sum f g a Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Sum f g a -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Sum f g a -> r Source # gmapQ :: (forall d. Data d => d -> u) -> Sum f g a -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> Sum f g a -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Sum f g a -> m (Sum f g a) Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Sum f g a -> m (Sum f g a) Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Sum f g a -> m (Sum f g a) Source #
(Ord1 f, Ord1 g, Ord a) => Ord (Sum f g a) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods compare :: Sum f g a -> Sum f g a -> Ordering Source # (<) :: Sum f g a -> Sum f g a -> Bool Source # (<=) :: Sum f g a -> Sum f g a -> Bool Source # (>) :: Sum f g a -> Sum f g a -> Bool Source # (>=) :: Sum f g a -> Sum f g a -> Bool Source # max :: Sum f g a -> Sum f g a -> Sum f g a Source # min :: Sum f g a -> Sum f g a -> Sum f g a Source #
(Read1 f, Read1 g, Read a) => Read (Sum f g a) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods readsPrec :: Int -> ReadS (Sum f g a) Source # readList :: ReadS [Sum f g a] Source # readPrec :: ReadPrec (Sum f g a) Source # readListPrec :: ReadPrec [Sum f g a] Source #
(Show1 f, Show1 g, Show a) => Show (Sum f g a) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Methods showsPrec :: Int -> Sum f g a -> ShowS Source # show :: Sum f g a -> String Source # showList :: [Sum f g a] -> ShowS Source #
Generic (Sum f g a) Source #	Since: base-4.9.0.0
Instance details Defined in Data.Functor.Sum Associated Types type Rep (Sum f g a) :: Type -> Type Source # Methods from :: Sum f g a -> Rep (Sum f g a) x Source # to :: Rep (Sum f g a) x -> Sum f g a Source #
type Rep1 (Sum f g :: k -> Type) Source #
Instance details Defined in Data.Functor.Sum type Rep1 (Sum f g :: k -> Type) = D1 ('MetaData "Sum" "Data.Functor.Sum" "base" 'False) (C1 ('MetaCons "InL" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec1 f)) :+: C1 ('MetaCons "InR" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec1 g)))
type Rep (Sum f g a) Source #
Instance details Defined in Data.Functor.Sum type Rep (Sum f g a) = D1 ('MetaData "Sum" "Data.Functor.Sum" "base" 'False) (C1 ('MetaCons "InL" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (f a))) :+: C1 ('MetaCons "InR" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (g a))))