libghc-stateref-dev - 0.3-8+b2 main

A collection of type-classes generalizing the read/write/modify
operations for stateful variables provided by things like IORef,
TVar, &c. Note that The interface has changed a bit from the 0.2.*
version. "*Ref" functions are now called "*Reference" and new "*Ref"
function exist with simpler signatures. The new Ref existential type
provides a convenient monad-indexed reference type, and the HasRef
class indicates monads for which there is a default reference type
for every referent.
.
This package provides a library for the Haskell programming language.
See http://www.haskell.org/ for more information on Haskell.