module NewtypeZoo.Single
( Single(Single)
, _theSingle
, theSingle
) where
import Control.DeepSeq (NFData)
import Control.Monad.Fix (MonadFix)
import Control.Monad.Zip (MonadZip)
import Data.Bits (Bits,FiniteBits)
import Data.Copointed (Copointed)
import Data.Default (Default)
import Data.Functor.Classes (Eq1, Ord1, Read1, Show1)
import Data.Functor.Identity
import Data.Ix (Ix)
import Data.Profunctor (Profunctor, dimap)
import Data.Pointed (Pointed)
import Data.String (IsString)
import Data.Typeable (Typeable)
import Foreign.Storable (Storable)
import GHC.Generics (Generic, Generic1)
import System.Random (Random)
import Test.QuickCheck (Arbitrary)
newtype Single a = Single a
deriving ( Eq
, Ord
, Read
, Show
, NFData
, Foldable
, Traversable
, Functor
, Default
, Monoid
, Semigroup
, Typeable
, Generic
, Generic1
, Random
, Arbitrary
, Bounded
, Enum
, Floating
, Fractional
, Integral
, Num
, Real
, RealFloat
, RealFrac
, Ix
, IsString
, Bits
, FiniteBits
)
deriving ( Eq1
, Ord1
, Read1
, Show1
, Pointed
, Copointed
, Applicative
, MonadFix
, Monad
, MonadZip
)
via Identity
_theSingle :: Single x -> x
_theSingle (Single !x) = x
{-# INLINE _theSingle #-}
theSingle :: forall a b p f. (Profunctor p, Functor f) => p a (f b) -> p (Single a) (f (Single b))
theSingle = dimap _theSingle (fmap Single)
{-# INLINE theSingle #-}