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.
This package provides the region monad transformer. Scarce resources like
files, memory pointers or USB devices for example can be opened in a
region. When the region terminates, all opened resources will be automatically
closed. The main advantage of regions is that the opened resources can not be
returned from the region which ensures no I/O with closed resources is
possible.
The primary technique used in this package is called "Lightweight monadic
regions" which was invented by Oleg Kiselyov and Chung-chieh Shan. See: