A JSON parsing and encoding library optimized for ease of use and high performance. To get started, see the documentation for the Data.Aeson module below. Parsing performance on a late 2013 MacBook Pro (2.6GHz Core i7), running 64-bit GHC 7.10.1, for mostly-English tweets from Twitter's JSON search API: 6.4 KB payloads, English: 7570 msg/sec (47.6 MB/sec) 14.6 KB payloads, Japanese: 3261 msg/sec (46.6 MB/sec) Encoding performance on the same machine and data: 6.4 KB payloads, English: 22738 msg/sec (142.9 MB/sec) 14.6 KB payloads, Japanese: 15911 msg/sec (227.4 MB/sec) (A note on naming: in Greek mythology, Aeson was the father of Jason.)

bsd3, json, library, text, web, Propose Tags , Data.Aeson, Data.Aeson.Encode, Data.Aeson.Encoding, Data.Aeson.Encoding.Internal, Data.Aeson.Internal, Data.Aeson.Internal.Time, Data.Aeson.Parser, Data.Aeson.Parser.Internal, Data.Aeson.TH, Data.Aeson.Text, Data.Aeson.Types, github issue tracker, git repository, https://github.com/bos/aeson/blob/master/changelog.md, bos@serpentine.com
cabal install aeson-


Bryan O'Sullivan Adam Bergmark Bas van Dijk Oleg Grenrus Xia Li-yao Nicolas Seriot Ryan Scott Andrew Martin Andrew Martin Herbert Valerio Riedel Leon P Smith Matt Parsons fisx Daniel Díaz Jeremy Fitzhardinge Simon Meier Roel van Dijk Ben Weitzman Artyom Kazak JP winterland Lennart Spitzner Eduard Sergeev Jared Hance

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Welcome to aeson Hackage Build Status

aeson is a fast Haskell library for working with JSON data.

Join in!

We are happy to receive bug reports, fixes, documentation enhancements, and other improvements.

Please report bugs via the github issue tracker.

Master git repository:

  • git clone git://github.com/bos/aeson.git

See what's changed in recent (and upcoming) releases:

(You can create and contribute changes using either git or Mercurial.)


This library is written and maintained by Bryan O'Sullivan, bos@serpentine.com.