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  1. header :: forall (name :: Symbol) val h (ts :: [Type]) . (Get h (RequestHeader 'Required 'Strict name val), ArrowChoice h) => h (With Request ts, Either HeaderNotFound HeaderParseError) Response -> Middleware h ts (RequestHeader 'Required 'Strict name val ': ts)

    webgear-core WebGear.Core.Trait.Header

    Extract a request header value and convert it to a value of type val. The associated trait attribute has type val. Example usage: 

    header @"Content-Length" @Integer errorHandler okHandler

  2. header :: Maybe Double -> Rect Double -> Markup -> Markup

    chart-svg Chart.Markup

    Create the classic SVG element 

    >>> header (Just 300) (Rect (-0.75) 0.75 (-0.5) 0.5) (element_ "foo" []) & markdown_ Compact Xml
"<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" width=\"450\" height=\"300\" viewBox=\"-0.75 -0.5 1.5 1.0\"><foo></foo></svg>"

  3. headerRow :: ByteString

    cointracking-imports Web.CoinTracking.Imports

    The CSV header row to prepend to the generated output.

  4. header :: DNSMessage -> !DNSHeader

    dns Network.DNS.Types

    Header with extended RCODE

  5. header :: [Sequence] -> ByteString

    elynx-seq ELynx.Sequence.Sequence

    A short description of the sequence.

  6. header :: EventLog -> Header

    ghc-events GHC.RTS.Events

    No documentation available.

  7. headerDateSpanCell :: Maybe Text -> [Text] -> DateSpan -> Cell () Text

    hledger Hledger.Cli.Anchor

    No documentation available.

  8. headDef :: a -> [a] -> a

    hledger Hledger.Cli.Script

    No documentation available.

  9. 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

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

    hledger Hledger.Cli.Script

    No documentation available.

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