monad-statevar

Concise, overloaded accessors for IORef, STRef, TVar.

Overloaded get and put for state variables (IORef, STRef, TVar) to make reading and writing more concise.

Inspired by the StateVar package by Sven Panne, with the following differences:

• Supports variables in other monads besides IO (e.g. TVar, STRef).

• Provides non-infix put, modify, etc.

• Does not provide concrete state variables (i.e. ones where you supply get and put callbacks). If you want this feature, please submit an issue.

• Named "Control.Monad.StateVar" instead of "Data.StateVar", to avoid a module naming conflict.