binary-tagged: Tagged binary serialisation.

[ bsd3, library, web ] [ Propose Tags ]

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Dependencies aeson (>=0.8 && <0.11), array (==0.5.*), base (>=4.7 && <4.9), binary (==0.7.*), bytestring (==0.10.*), containers (==0.5.*), generics-sop (>=0.1 && <, hashable (==1.2.*), scientific (==0.3.*), SHA (==1.6.*), tagged (>=0.7 && <0.9), text (==1.2.*), time (>=1.4 && <1.6), unordered-containers (==0.2.*), vector (>=0.10 && <0.12) [details]
License BSD-3-Clause
Author Oleg Grenrus <>
Maintainer Oleg Grenrus <>
Revised Revision 1 made by phadej at Mon Dec 5 09:43:42 UTC 2016
Category Web
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Uploaded by phadej at Sat Oct 24 06:42:41 UTC 2015
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Build Status Hackage Stackage LTS 2 Stackage LTS 3 Stackage Nightly

Structurally tag binary serialisation stream.

Say you have:

data Record = Record
  { _recordFields :: HM.HashMap Text (Integer, ByteString)
  , _recordEnabled :: Bool
  deriving (Eq, Show, Generic)

instance Binary Record
instance HasStructuralInfo Record
instance HasSemanticVersion Record

then you can serialise and deserialise Record values with a structure tag by simply

encodeTaggedFile "cachefile" record
decodeTaggedFile "cachefile" :: IO Record

If structure of Record changes in between, deserialisation will fail early.

The overhead is next to non-observable, see a simple benchmark and the results.