https://github.com/basvandijk/regions

Provides the region monad for safely opening and working with scarce resources
https://github.com/basvandijk/regions

haskell

Last synced: 10 days ago
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Provides the region monad for safely opening and working with scarce resources

• Host: GitHub
• URL: https://github.com/basvandijk/regions
• Owner: basvandijk
• License: other
• Created: 2011-04-17T15:35:55.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2015-02-24T11:21:08.000Z (over 9 years ago)
• Last Synced: 2024-10-11T23:43:58.851Z (25 days ago)
• Topics: haskell
• Language: Haskell
• Homepage:
• Size: 356 KB
• Stars: 30
• Watchers: 5
• Forks: 7
• Open Issues: 6
• Metadata Files:
  • Readme: README.markdown
  • License: LICENSE

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README

        
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][1] by Oleg Kiselyov and

Chung-chieh Shan.

Also see the [regions-mtl] and [regions-monadstf] packages which

provide instances for the classes in the respected monad transformers

packages.

For an example on how to use this library see the

[safer-file-handles], [usb-safe] or [regional-pointers] packages.

[1]: http://okmij.org/ftp/Haskell/regions.html#light-weight

[regions-mtl]:        http://hackage.haskell.org/package/regions-mtl

[regions-monadstf]:   http://hackage.haskell.org/package/regions-monadstf

[safer-file-handles]: http://hackage.haskell.org/package/safer-file-handles

[usb-safe]:           http://hackage.haskell.org/package/usb-safe

[regional-pointers]:  http://hackage.haskell.org/package/regional-pointers