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1. headErr :: Partial => [a] -> a

   hledger	Hledger.Cli.Script

   Identical to head, namely that fails on an empty list. Useful to avoid the x-partial warning introduced in GHC 9.8.

   headErr [] = error "Prelude.head: empty list"
   headErr [1,2,3] = 1
   

2. headMay :: [a] -> Maybe a

   hledger	Hledger.Cli.Script

   No documentation available.

3. headNote :: Partial => String -> [a] -> a

   hledger	Hledger.Cli.Script

   No documentation available.

4. header :: forall s (m :: Type -> Type) u a . Stream s m Char => String -> ParsecT s u m a -> ParsecT s u m a

   hsemail	Text.Parsec.Rfc2822

   Construct a parser for a message header line from the header's name and a parser for the body.

5. headerFormatter :: Formatter -> FormatM ()

   hspec-api	Test.Hspec.Api.Formatters.V1

   No documentation available.

6. headS :: StringLike a => a -> Char

   hxt-regex-xmlschema	Text.Regex.XMLSchema.Generic.StringLike

   No documentation available.

7. headM :: Monad m => NonEmptyVector a -> m a

   nonempty-vector	Data.Vector.NonEmpty

   O(1) First element of a non-empty vector in a monad. See indexM for an explanation of why this is useful. Note that this function defers to unsafeHeadM since head is gauranteed to be safe by construction.

   >>> headM @[] (unsafeFromList [1..10])
   [1]
   

8. header :: MsgType -> Builder

   opentelemetry	OpenTelemetry.Eventlog_Internal

   No documentation available.

9. headerSize :: Int

   opentelemetry	OpenTelemetry.Eventlog_Internal

   No documentation available.

10. header :: Html -> Html

    xhtml	Text.XHtml.Frameset

    No documentation available.

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