Alfonso Acosta wrote:
How about using a state monad as a logger?You store the transformation sequence in the state while processing the tree, then you simply retrieve the state and print it out.
Mmm... that could work... I'll investigate. Thanks. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
