managed

A monad for managed values

Version on this page:1.0.6
LTS Haskell 12.22:1.0.6
Stackage Nightly 2018-12-15:1.0.6
Latest on Hackage:1.0.6

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BSD3 licensed by Gabriel Gonzalez
Maintained by Gabriel439@gmail.com

Module documentation for 1.0.6

In Haskell you very often acquire values using the with... idiom using functions of type (a -> IO r) -> IO r. This idiom forms a Monad, which is a special case of the ContT monad (from transformers) or the Codensity monad (from kan-extensions). The main purpose behind this package is to provide a restricted form of these monads specialized to this unusually common case.

The reason this package defines a specialized version of these types is to:

  • be more beginner-friendly,

  • simplify inferred types and error messages, and:

  • provide some additional type class instances that would otherwise be orphan instances

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