[Haskell-cafe] Abuse of the monad

Colin Paul Adams colin at colina.demon.co.uk
Thu Mar 12 10:44:31 EDT 2009

> That's interesting.
> I recently used parsec 3. I wrote using the monadic interface because
> I could understand (just about) how to do so. I was looking at the
> examples in RWH, and I could follow the explanation of the monadic
> interface much easier.
> Perhaps this was because RWH shows how to write using the monadic
> interface, and then shows how to convert this to the applicative
> interface.
> It's hard to follow a tutorial that shows you how to convert from
> something you aren't starting with.

>>I suspect that this is an interesting corner case of both my two
>>reasons – firstly, Monads are too powerful here, and secondly, you
>>perhaps found it easier to think about the operational aspects of the
>>parser than to think about the denotation of what the parser should

>>Is that somewhere accurate?

I don't know.
Colin Adams
Preston Lancashire

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