Andreas Rossberg wrote:

> > [Also, it turns out monads are not general enough to write
> > web services in, which puts me off a bit]
> 
> The following tutorial gives quite a comprehensive explanation of how to
> integrate I/O, stateful computation, and stuff into a purely functional
> language using Monads. And coincidentally it uses a web server as a
> running example ;-)
> 
>         http://research.microsoft.com/Users/simonpj/#marktoberdorf

Thanks. Now, somewhere linked to the Haskell web site,
is an article about 'Arrows', which explains why it was found
Monads are inadequate. I recall the issue was related
to interfacing to CGI scripts and preserving state between
interactions. Sorry I don't have URL handy :-(

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