hyperloglog

An approximate streaming (constant space) unique object counter

http://github.com/analytics/hyperloglog

Version on this page:0.3.1@rev:1
LTS Haskell 24.17:0.5
Stackage Nightly 2025-10-30:0.5
Latest on Hackage:0.5

See all snapshots hyperloglog appears in

BSD-3-Clause licensed by Edward A. Kmett
Maintained by Edward A. Kmett
This version can be pinned in stack with:hyperloglog-0.3.1@sha256:9656873f269cef1f68eaa95e106bb49f6f5f5538bef06d82244d566e344c3ef6,3208

Module documentation for 0.3.1

hyperloglog

Build Status

This package provides a working implementation of HyperLogLog.

Contact Information

Contributions and bug reports are welcome!

Please feel free to contact me through github or on the #haskell IRC channel on irc.freenode.net.

-Edward Kmett

Changes

0.3.1

  • Added insertHash. This enables users of the 0.2 era version of hyperloglog to manually pick the hash used and load their old data.
  • Builds warning-free on GHC 7.10

0.3.0.1

  • Constraint bumps for lens and generic-deriving

0.3

  • Switched to SipHash, so the package actually works.

0.2.3.2

  • More #ifdef bugfixes

0.2.3.1

  • #ifdef bugfix

0.2.3

  • GHC 7.8 compatibility
  • Bumped cereal dependency.

0.2.1

  • Exported insert from Data.HyperLogLog.

0.2

  • Made compatible with lens 4

0.1

  • Ported Data.Analytics.Approximate.HyperLogLog from analytics into a separate package.