BSD3 licensed and maintained by Toshio Ito

Module documentation for


A simple stopwatch utility for Haskell.

How to run tests

cabal configure --enable-tests && cabal build && cabal test

Important test flag

  • test_delay_upper_bound: Default: False. If True, the test checks the return value of stopWatch with upper bounds. If False, it doesn't check upper bounds. It checks lower bounds only.


Toshio Ito


Revision history for stopwatch -- 2018-03-14

  • Confirmed test with hspec-2.5.0. Remove its dependency upper bound, because I think it's stable enough. -- 2017-01-24

  • Confirmed build with hspec-2.4.0. -- 2016-10-09

  • Confirmed build with hspec-2.3.0. -- 2016-05-22

  • Dependency version range for base was too wide. -- 2016-05-03

  • Expand dependency version ranges for transformers and clock.

  • Loosen the test. Now it checks only lower bounds of the measured delay, not upper bounds. This is because in some environments, it's difficult to ensure the upper bounds.

0.1.0 -- 2015-09-13

  • First version. Released on an unsuspecting world.
Depends on 3 packages:
Used by 1 package:
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