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Within LTS Haskell 24.58 (ghc-9.10.3)

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Exact lookup

1. getHeadersHList :: Headers ls a -> HList ls

   gogol-core	Gogol.Prelude

   HList of headers.

2. lookupResponseHeader :: forall (h :: Symbol) a (headers :: [Type]) r . HasResponseHeader h a headers => Headers headers r -> ResponseHeader h a

   gogol-core	Gogol.Prelude

   Look up a specific ResponseHeader, without having to know what position it is in the HList.

   >>> let example1 = addHeader 5 "hi" :: Headers '[Header "someheader" Int] String
   
   >>> let example2 = addHeader True example1 :: Headers '[Header "1st" Bool, Header "someheader" Int] String
   
   >>> lookupResponseHeader example2 :: ResponseHeader "someheader" Int
   Header 5
   

   >>> lookupResponseHeader example2 :: ResponseHeader "1st" Bool
   Header True
   

   Usage of this function relies on an explicit type annotation of the header to be looked up. This can be done with type annotations on the result, or with an explicit type application. In this example, the type of header value is determined by the type-inference, we only specify the name of the header:

   >>> :set -XTypeApplications
   
   >>> case lookupResponseHeader @"1st" example2 of { Header b -> b ; _ -> False }
   True
   

3. noHeader :: forall (h :: Symbol) v orig new . AddHeader '[Optional, Strict] h v orig new => orig -> new

   gogol-core	Gogol.Prelude

   Deliberately do not add a header to a value.

   >>> let example1 = noHeader "hi" :: Headers '[Header "someheader" Int] String
   
   >>> getHeaders example1
   []
   

4. noHeader' :: forall (mods :: [Type]) (h :: Symbol) v orig new . AddHeader mods h v orig new => orig -> new

   gogol-core	Gogol.Prelude

   Same as noHeader but works with Header', so it's possible to use any mods.

5. parseHeader :: FromHttpApiData a => ByteString -> Either Text a

   gogol-core	Gogol.Prelude

   Parse HTTP header value.

6. toHeader :: ToHttpApiData a => a -> ByteString

   gogol-core	Gogol.Prelude

   Convert to HTTP header value.

7. _rqHeaders :: Request -> !DList (HeaderName, ByteString)

   gogol-core	Gogol.Types

   No documentation available.

8. _serializeHeaders :: SerializeError -> [Header]

   gogol-core	Gogol.Types

   No documentation available.

9. _serviceHeaders :: ServiceError -> ![Header]

   gogol-core	Gogol.Types

   No documentation available.

10. appendHeader :: Request -> HeaderName -> Maybe Text -> Request

    gogol-core	Gogol.Types

    No documentation available.

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