[Haskell-cafe] Mutable data within a (non-IO) monad

[Henning Thielemann]

On Fri, 2 Oct 2009, Gregory Crosswhite wrote:

> Do you all have any thoughts on ways to solve this problem, and/or a 
> high-level explanation of what is going behind the scenes with STRefs and 
> MArrays?

http://www.haskell.org/haskellwiki/Monad/ST