State Transformer

[Eray Ozkural (exa)]

On Friday 11 January 2002 19:39, Jan-Willem Maessen wrote:
> The ST monad provides safer encapsulation of mutable references.  We
> can prove that references which escape a particular instance of ST are
> never side effected.  See the paper "Lazy Functional State Threads":
>
>   http://www.cse.ogi.edu/~jl/Papers/stateThreads.ps
>
> This allows us to construct functions which are certain to present a
> functional face to the world, but use mutation internally.  In this
> respect, ST is actually "better" than IO, albeit less well-supported.

So would writing for instance a GUI library, with abstract interfaces using 
ST be a good idea?

Thanks,

-- 
Eray Ozkural (exa) <erayo@cs.bilkent.edu.tr>
Comp. Sci. Dept., Bilkent University, Ankara
www: http://www.cs.bilkent.edu.tr/~erayo
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