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Within LTS Haskell 24.4 (ghc-9.10.2)

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Exact lookup

1. head :: Positive n => T n a -> a

   fixed-length	Data.FixedLength

   No documentation available.

2. head :: forall v a (as :: [Type]) . (HVector v, Elems v ~ (a ': as), Arity as) => v -> a

   fixed-vector-hetero	Data.Vector.HFixed

   Head of the vector

   >>> head ('a',"ABC")
   'a'
   

3. head :: forall (xs :: [Type]) x . Arity xs => ContVec (x ': xs) -> x

   fixed-vector-hetero	Data.Vector.HFixed.Cont

   Head of vector

4. head :: FMList a -> a

   fmlist	Data.FMList

   No documentation available.

5. head :: Fact (IsCons xs) => ([a] ~~ xs) -> a ~~ Head xs

   gdp	Theory.Lists

   Extract the first element from a non-empty list.

6. head :: BinfoInfo -> !BinfoBlockInfo

   haskoin-store-data	Haskoin.Store.Data

   No documentation available.

7. head :: Head v => v -> Elem v

   hw-prim	HaskellWorks.Data.Head

   No documentation available.

8. head :: Monad m => Stream m a -> m (Maybe a)

   leveldb-haskell	Data.Stream.Monadic

   Unlike head, this function does not diverge if the Stream is empty. Instead, Nothing is returned.

9. head :: HasCallStack => Text -> Char

   miso	Miso.String

   O(1) Returns the first character of a Text, which must be non-empty. This is a partial function, consider using uncons instead.

10. head :: NonEmptyText -> Char

    non-empty-text	Data.NonEmptyText

    O(1) Return the first of the NonEmptyText As opposed to head, this is guaranteed to succeed, as the the text is never empty.

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