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Within LTS Haskell 24.58 (ghc-9.10.3)

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1. LHead :: Text -> Attribute

   graphviz	Data.GraphViz.Attributes.Complete

   Valid for: E; Default: ""; Notes: Dot only

2. SameHead :: Text -> Attribute

   graphviz	Data.GraphViz.Attributes.Complete

   Valid for: E; Default: ""; Notes: Dot only

3. addHeaderBorders :: [Cell () text] -> [Cell NumLines text]

   hledger-lib	Hledger.Write.Spreadsheet

   No documentation available.

4. addRowSpanHeader :: Cell border text -> [[Cell border text]] -> [[Cell border text]]

   hledger-lib	Hledger.Write.Spreadsheet

   No documentation available.

5. getHeader :: Response -> ByteString -> Maybe ByteString

   http-streams	Network.Http.Client

   Lookup a header in the response. HTTP header field names are case-insensitive, so you can specify the name to lookup however you like. If the header is not present Nothing will be returned.

   let n = case getHeader p "Content-Length" of
   Just x' -> read x' :: Int
   Nothing -> 0
   

   which of course is essentially what goes on inside the client library when it receives a response from the server and has to figure out how many bytes to read. There is a fair bit of complexity in some of the other HTTP response fields, so there are a number of specialized functions for reading those values where we've found them useful.

6. getHeaders :: HttpType τ => τ -> Headers

   http-streams	Network.Http.Client

   Get the Headers from a Request or Response.y

7. getHeadersFull :: Connection -> Request -> Headers

   http-streams	Network.Http.Client

   Get the headers that will be sent with this request. You likely won't need this but there are some corner cases where people need to make calculations based on all the headers before they go out over the wire. If you'd like the request headers as an association list, import the header functions:

   import Network.Http.Types
   

   then use retreiveHeaders as follows:

   >>> let kvs = retreiveHeaders $ getHeadersFull c q
   
   >>> :t kvs
   :: [(ByteString, ByteString)]
   

8. getRequestHeaders :: Connection -> Request -> [(ByteString, ByteString)]

   http-streams	Network.Http.Client

   Deprecated: use retrieveHeaders . getHeadersFull instead

9. setHeader :: ByteString -> ByteString -> RequestBuilder ()

   http-streams	Network.Http.Client

   Set a generic header to be sent in the HTTP request. The other methods in the RequestBuilder API are expressed in terms of this function, but we recommend you use them where offered for their stronger types.

10. data JWEHeader p

    jose	Crypto.JOSE.JWE

    No documentation available.

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