acme-timemachine

An easy way to perform and unperform IO and other stateful actions.

Latest on Hackage:

0.0.1.0

This package is not currently in any snapshots. If you're interested in using it, we recommend adding it to Stackage Nightly. Doing so will make builds more reliable, and allow stackage.org to host generated Haddocks.

BSD-3-Clause licensed by mniip

Maintained by [email protected]

When doing some computations with side effects, one might regret the decision to change the state of the universe. This package provides an undo function for such cases, and universe suspension/resuming functions for finer control.