Hello John, Tuesday, January 30, 2007, 2:57:04 PM, you wrote:
> mergeForest2 = > map pairToNode . > Map.toList . > Map.map mergeForest2 . > Map.fromListWith (++) . > map nodeToPair > My problem I guess is being able to write the code this way when > the need arises or even just recognising when and where it's an > option, both of which to me is considerably harder. i guess that it's just imperative style of thought that you can't easily scrap out. the whole idea of functional programming is that you make data *transformations*. you start with one data representation, then transform it into another, then you can make some sub-transformations with sub-elements of your data (using various "map"s), then you may glue data together using various folds and so on. there are real difference between imperative style do-it-after-that and functional style "map original data into result" btw, are you seen http://haskell.org/haskellwiki/Simple_unix_tools ? :) -- Best regards, Bulat mailto:[EMAIL PROTECTED] _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
