monad-control: Lift control operations, like exception catching, through monad transformers

The monad-control package

[Tags:bsd3, library]

This package defines the type class MonadBaseControl, a subset of MonadBase into which generic control operations such as catch can be lifted from IO or any other base monad. Instances are based on monad transformers in MonadTransControl, which includes all standard monad transformers in the transformers library except ContT.

See the lifted-base package which uses monad-control to lift IO operations from the base library (like catch or bracket) into any monad that is an instance of MonadBase or MonadBaseControl.

Note that this package is a rewrite of Anders Kaseorg's monad-peel library. The main difference is that this package provides CPS style operators and exploits the RankNTypes and TypeFamilies language extensions to simplify and speedup most definitions.

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Properties

Versions 0.1, 0.2, 0.2.0.1, 0.2.0.2, 0.2.0.3, 0.3, 0.3.0.1, 0.3.1, 0.3.1.1, 0.3.1.2, 0.3.1.3, 0.3.1.4, 0.3.2, 0.3.2.1, 0.3.2.2, 0.3.2.3, 0.3.3.0, 0.3.3.1, 1.0.0.0, 1.0.0.1, 1.0.0.2, 1.0.0.3, 1.0.0.4, 1.0.0.5, 1.0.1.0
Change log CHANGELOG
Dependencies base (>=4.5 && <5), stm (>=2.3 && <3), transformers (>=0.2 && <0.6), transformers-base (>=0.4.4 && <0.5), transformers-compat (>=0.3 && <0.6) [details]
License BSD3
Copyright (c) 2011 Bas van Dijk, Anders Kaseorg
Author Bas van Dijk, Anders Kaseorg
Maintainer Bas van Dijk <[email protected]>
Stability Unknown
Category Control
Home page https://github.com/basvandijk/monad-control
Bug tracker https://github.com/basvandijk/monad-control/issues
Source repository head: git clone git://github.com/basvandijk/monad-control.git
Uploaded Tue Apr 5 22:54:51 UTC 2016 by BasVanDijk
Distributions Arch:1.0.1.0, Debian:1.0.0.4, Fedora:1.0.1.0, FreeBSD:1.0.0.4, LTSHaskell:1.0.1.0, NixOS:1.0.1.0, Stackage:1.0.1.0, Tumbleweed:1.0.1.0
Downloads 169258 total (118 in the last 30 days)
Votes
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Status Docs available [build log]
Last success reported on 2016-04-05 [all 1 reports]

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Readme for monad-control

Readme for monad-control-1.0.1.0

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This package defines the type class MonadControlIO, a subset of MonadIO into which generic control operations such as catch can be lifted from IO. Instances are based on monad transformers in MonadTransControl, which includes all standard monad transformers in the transformers library except ContT.

Note that this package is a rewrite of Anders Kaseorg's monad-peel library. The main difference is that this package provides CPS style operators and exploits the RankNTypes language extension to simplify most definitions.

The package includes a copy of the monad-peel testsuite written by Anders Kaseorg The tests can be performed by using cabal test.

This criterion based benchmark shows that monad-control is on average about 2.5 times faster than monad-peel.