Hi John Sorry, I don't think I really grasp your problem?
I think you're mixing two things: a) which data type to use to store whatever you like? * http://haskell.org/haskellwiki/Existential_type * Typable and Data.Dynamic etc.. b) Which container to use to put in stuff, return an identifier so that it can be removed by id again? There are many ways. Probably something like Data.Map or finger trees will do very well.. (use Int as key type and use max + 1 when inserting a new one or such?) I hope I've helped you in some way.. Sincerly Marc Weber _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
