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lookAheadM :: Get (Maybe a) -> Get (Maybe a)binary Data.Binary.Get.Internal Run the given decoder, and only consume its input if it returns Just. If Nothing is returned, the input will be unconsumed. If the given decoder fails, then so will this function.
lookAhead :: Parser i a -> Parser i aattoparsec Data.Attoparsec.Combinator Apply a parser without consuming any input.
type
RequestHeaders = [Header]http-types Network.HTTP.Types A list of Headers. Same type as ResponseHeaders, but useful to differentiate in type signatures.
type
ResponseHeaders = [Header]http-types Network.HTTP.Types A list of Headers. Same type as RequestHeaders, but useful to differentiate in type signatures.
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http-types Network.HTTP.Types HEAD Method
requestHeaderFieldsTooLarge431 :: Statushttp-types Network.HTTP.Types Request Header Fields Too Large 431 (RFC 6585)
type
RequestHeaders = [Header]http-types Network.HTTP.Types.Header A list of Headers. Same type as ResponseHeaders, but useful to differentiate in type signatures.
type
ResponseHeaders = [Header]http-types Network.HTTP.Types.Header A list of Headers. Same type as RequestHeaders, but useful to differentiate in type signatures.
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http-types Network.HTTP.Types.Method HEAD Method
requestHeaderFieldsTooLarge431 :: Statushttp-types Network.HTTP.Types.Status Request Header Fields Too Large 431 (RFC 6585)