OneTuple-0.3.1: Singleton Tuple

Safe Haskell | Safe
Language | Haskell98

Data.Tuple.Solo

Description

`Solo` fills the tuple gap with a singleton tuple.

`Solo` does not support the usual parenthesized tuple syntax.

`Solo`

- has the expected laziness properties
- can be pattern-matched
- ships with instances for several standard type classes, including all those supported by H98-standard tuples
- requires no language extensions, except for hierarchical modules

Note: on GHC-9.0 `getSolo` is not a record selector.

Synopsis

- data Solo a = Solo a
- getSolo :: Solo a -> a

# Documentation

data Solo a #

Solo is the singleton tuple data type.

Constructors

Solo a |

#### Instances

Instances details

Monad Solo # |
Instance details Defined in Data.Tuple.Solo Methods (>>=) :: Solo a -> (a -> Solo b) -> Solo b # (>>) :: Solo a -> Solo b -> Solo b # return :: a -> Solo a #
Functor Solo # |
Instance details Defined in Data.Tuple.Solo Methods fmap :: (a -> b) -> Solo a -> Solo b # (<$) :: a -> Solo b -> Solo a #
MonadFix Solo # |
Instance details Defined in Data.Tuple.Solo Methods mfix :: (a -> Solo a) -> Solo a #
Applicative Solo # |
Instance details Defined in Data.Tuple.Solo Methods pure :: a -> Solo a # (<*>) :: Solo (a -> b) -> Solo a -> Solo b # liftA2 :: (a -> b -> c) -> Solo a -> Solo b -> Solo c # (*>) :: Solo a -> Solo b -> Solo b # (<*) :: Solo a -> Solo b -> Solo a #
Foldable Solo # |
Instance details Defined in Data.Tuple.Solo Methods fold :: Monoid m => Solo m -> m # foldMap :: Monoid m => (a -> m) -> Solo a -> m # foldMap' :: Monoid m => (a -> m) -> Solo a -> m # foldr :: (a -> b -> b) -> b -> Solo a -> b # foldr' :: (a -> b -> b) -> b -> Solo a -> b # foldl :: (b -> a -> b) -> b -> Solo a -> b # foldl' :: (b -> a -> b) -> b -> Solo a -> b # foldr1 :: (a -> a -> a) -> Solo a -> a # foldl1 :: (a -> a -> a) -> Solo a -> a # toList :: Solo a -> [a] # null :: Solo a -> Bool # length :: Solo a -> Int # elem :: Eq a => a -> Solo a -> Bool # maximum :: Ord a => Solo a -> a # minimum :: Ord a => Solo a -> a # sum :: Num a => Solo a -> a # product :: Num a => Solo a -> a #
Traversable Solo # |
Instance details Defined in Data.Tuple.Solo Methods traverse :: Applicative f => (a -> f b) -> Solo a -> f (Solo b) # sequenceA :: Applicative f => Solo (f a) -> f (Solo a) # mapM :: Monad m => (a -> m b) -> Solo a -> m (Solo b) # sequence :: Monad m => Solo (m a) -> m (Solo a) #
Eq1 Solo # |
Instance details Defined in Data.Tuple.Solo Methods liftEq :: (a -> b -> Bool) -> Solo a -> Solo b -> Bool #
Ord1 Solo # |
Instance details Defined in Data.Tuple.Solo Methods liftCompare :: (a -> b -> Ordering) -> Solo a -> Solo b -> Ordering #
Read1 Solo # |
Instance details Defined in Data.Tuple.Solo Methods liftReadsPrec :: (Int -> ReadS a) -> ReadS [a] -> Int -> ReadS (Solo a) # liftReadList :: (Int -> ReadS a) -> ReadS [a] -> ReadS [Solo a] # liftReadPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec (Solo a) # liftReadListPrec :: ReadPrec a -> ReadPrec [a] -> ReadPrec [Solo a] #
Show1 Solo # |
Instance details Defined in Data.Tuple.Solo Methods liftShowsPrec :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> Int -> Solo a -> ShowS # liftShowList :: (Int -> a -> ShowS) -> ([a] -> ShowS) -> [Solo a] -> ShowS #
MonadZip Solo # |
Instance details Defined in Data.Tuple.Solo Methods mzip :: Solo a -> Solo b -> Solo (a, b) # mzipWith :: (a -> b -> c) -> Solo a -> Solo b -> Solo c # munzip :: Solo (a, b) -> (Solo a, Solo b) #
Hashable1 Solo # | Since: 0.3.1
Instance details Defined in Data.Tuple.Solo Methods liftHashWithSalt :: (Int -> a -> Int) -> Int -> Solo a -> Int #
Bounded a => Bounded (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods minBound :: Solo a # maxBound :: Solo a #
Enum a => Enum (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods succ :: Solo a -> Solo a # pred :: Solo a -> Solo a # toEnum :: Int -> Solo a # fromEnum :: Solo a -> Int # enumFrom :: Solo a -> [Solo a] # enumFromThen :: Solo a -> Solo a -> [Solo a] # enumFromTo :: Solo a -> Solo a -> [Solo a] # enumFromThenTo :: Solo a -> Solo a -> Solo a -> [Solo a] #
Eq a => Eq (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods (==) :: Solo a -> Solo a -> Bool # (/=) :: Solo a -> Solo a -> Bool #
Data a => Data (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Solo a -> c (Solo a) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Solo a) # toConstr :: Solo a -> Constr # dataTypeOf :: Solo a -> DataType # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Solo a)) # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Solo a)) # gmapT :: (forall b. Data b => b -> b) -> Solo a -> Solo a # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Solo a -> r # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Solo a -> r # gmapQ :: (forall d. Data d => d -> u) -> Solo a -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> Solo a -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Solo a -> m (Solo a) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Solo a -> m (Solo a) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Solo a -> m (Solo a) #
Ord a => Ord (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods compare :: Solo a -> Solo a -> Ordering # (<) :: Solo a -> Solo a -> Bool # (<=) :: Solo a -> Solo a -> Bool # (>) :: Solo a -> Solo a -> Bool # (>=) :: Solo a -> Solo a -> Bool # max :: Solo a -> Solo a -> Solo a # min :: Solo a -> Solo a -> Solo a #
Read a => Read (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods readsPrec :: Int -> ReadS (Solo a) # readList :: ReadS [Solo a] # readPrec :: ReadPrec (Solo a) # readListPrec :: ReadPrec [Solo a] #
Show a => Show (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods showsPrec :: Int -> Solo a -> ShowS # show :: Solo a -> String # showList :: [Solo a] -> ShowS #
Ix a => Ix (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods range :: (Solo a, Solo a) -> [Solo a] # index :: (Solo a, Solo a) -> Solo a -> Int # unsafeIndex :: (Solo a, Solo a) -> Solo a -> Int # inRange :: (Solo a, Solo a) -> Solo a -> Bool # rangeSize :: (Solo a, Solo a) -> Int # unsafeRangeSize :: (Solo a, Solo a) -> Int #
Generic (Solo a) # |
Instance details Defined in Data.Tuple.Solo Associated Types type Rep (Solo a) :: Type -> Type # Methods from :: Solo a -> Rep (Solo a) x # to :: Rep (Solo a) x -> Solo a #
Semigroup a => Semigroup (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods (<>) :: Solo a -> Solo a -> Solo a # sconcat :: NonEmpty (Solo a) -> Solo a # stimes :: Integral b => b -> Solo a -> Solo a #
Monoid a => Monoid (Solo a) # |
Instance details Defined in Data.Tuple.Solo Methods mempty :: Solo a # mappend :: Solo a -> Solo a -> Solo a # mconcat :: [Solo a] -> Solo a #
Hashable a => Hashable (Solo a) # | Since: 0.3.1
Instance details Defined in Data.Tuple.Solo Methods hashWithSalt :: Int -> Solo a -> Int # hash :: Solo a -> Int #
Generic1 Solo # |
Instance details Defined in Data.Tuple.Solo Associated Types type Rep1 Solo :: k -> Type # Methods from1 :: forall (a :: k). Solo a -> Rep1 Solo a # to1 :: forall (a :: k). Rep1 Solo a -> Solo a #
type Rep (Solo a) # |
Instance details Defined in Data.Tuple.Solo type Rep (Solo a) = D1 ('MetaData "Solo" "Data.Tuple.Solo" "OneTuple-0.3.1-9wEK0rLDy4T3SqWiDGaGFs" 'False) (C1 ('MetaCons "Solo" 'PrefixI 'True) (S1 ('MetaSel ('Just "getSolo") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)))
type Rep1 Solo # |
Instance details Defined in Data.Tuple.Solo type Rep1 Solo = D1 ('MetaData "Solo" "Data.Tuple.Solo" "OneTuple-0.3.1-9wEK0rLDy4T3SqWiDGaGFs" 'False) (C1 ('MetaCons "Solo" 'PrefixI 'True) (S1 ('MetaSel ('Just "getSolo") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) Par1))

getSolo :: Solo a -> a #