Data.Tuple.Solo

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.

Documentation

data Solo a

Solo is the singleton tuple data type.

Constructors

Solo a

Instances

Monad Solo

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

Defined in Data.Tuple.Solo

Methods

fmap :: (a -> b) -> Solo a -> Solo b

(<$) :: a -> Solo b -> Solo a

MonadFix Solo

Defined in Data.Tuple.Solo

Methods

mfix :: (a -> Solo a) -> Solo a

Applicative Solo

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

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

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

Defined in Data.Tuple.Solo

Methods

liftEq :: (a -> b -> Bool) -> Solo a -> Solo b -> Bool

Ord1 Solo

Defined in Data.Tuple.Solo

Methods

liftCompare :: (a -> b -> Ordering) -> Solo a -> Solo b -> Ordering

Read1 Solo

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

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

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

Defined in Data.Tuple.Solo

Methods

liftHashWithSalt :: (Int -> a -> Int) -> Int -> Solo a -> Int

Bounded a => Bounded (Solo a)

Defined in Data.Tuple.Solo

Methods

minBound :: Solo a

maxBound :: Solo a

Enum a => Enum (Solo a)

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)

Defined in Data.Tuple.Solo

Methods

(==) :: Solo a -> Solo a -> Bool

(/=) :: Solo a -> Solo a -> Bool

Data a => Data (Solo a)

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)

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)

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)

Defined in Data.Tuple.Solo

Methods

showsPrec :: Int -> Solo a -> ShowS

show :: Solo a -> String

showList :: [Solo a] -> ShowS

Ix a => Ix (Solo a)

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)

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)

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)

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

Defined in Data.Tuple.Solo

Methods

hashWithSalt :: Int -> Solo a -> Int

hash :: Solo a -> Int

Generic1 Solo

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)

Defined in Data.Tuple.Solo

type Rep (Solo a) = D1 ('MetaData "Solo" "Data.Tuple.Solo" "OneTuple-0.3.1-FIEyMlNX7m4TCEoFJ1XmK" 'False) (C1 ('MetaCons "Solo" 'PrefixI 'True) (S1 ('MetaSel ('Just "getSolo") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 a)))

type Rep1 Solo

Defined in Data.Tuple.Solo

type Rep1 Solo = D1 ('MetaData "Solo" "Data.Tuple.Solo" "OneTuple-0.3.1-FIEyMlNX7m4TCEoFJ1XmK" 'False) (C1 ('MetaCons "Solo" 'PrefixI 'True) (S1 ('MetaSel ('Just "getSolo") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) Par1))

getSolo :: Solo a -> a