Re: [Haskell-cafe] Transformation sequence

I know that this is a resolved question, but wouldn't Huet's Zipper also work for this On Oct 20, 2007, at 5:26 PM, Alfonso Acosta wrote:

On 10/20/07, Mads Lindstrøm wrote:

...

I am not a monad-expect, so I may be wrong, but wouldn't a writer monad be more appropriate?

You are at least more monad-expert than myself . I knew the existence of the writer monad but not really how it works. After checking its documentation I must say you and Brandon are right. Using the Writer Monad makes sense. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe