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Within LTS Haskell 24.3 (ghc-9.10.2)

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1. head :: Infinite a -> a

   ghc	GHC.Data.List.Infinite

   No documentation available.

2. head :: HasCallStack => [a] -> a

   ghc	GHC.Prelude.Basic

   No documentation available.

3. head :: Monad m => Producer a m () -> m (Maybe a)

   pipes	Pipes.Prelude

   Retrieve the first element from a Producer

4. head :: Fold a (Maybe a)

   foldl	Control.Foldl

   Get the first element of a container or return Nothing if the container is empty

5. head :: Fold ByteString (Maybe Word8)

   foldl	Control.Foldl.ByteString

   Get the first byte of a byte stream or return Nothing if the stream is empty

6. head :: Fold1 a a

   foldl	Control.Foldl.NonEmpty

   Get the first element of a non-empty container

7. head :: Fold Text (Maybe Char)

   foldl	Control.Foldl.Text

   Get the first character of a text stream or return Nothing if the stream is empty

8. head :: ShortText -> Char

   text-short	Data.Text.Short.Partial

   Returns first character of a non-empty ShortText

   >>> head "abcd"
   'a'
   

   Note: Will throw an error exception for empty ShortTexts. Consider using the total functions uncons or indexMaybe instead.

9. head :: T (f :: Type -> Type) a -> a

   non-empty	Data.NonEmpty

   No documentation available.

10. head :: MonoFoldable mono => NonNull mono -> Element mono

    mono-traversable	Data.NonNull

    Return the first element of a monomorphic container. Safe version of headEx, only works on monomorphic containers wrapped in a NonNull.

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