Bulat Ziganshin <[EMAIL PROTECTED]> writes: | Hello John, | | Friday, August 18, 2006, 5:16:45 AM, you wrote: | | > There is a major difference though, in C++ (or java, or sather, or c#, | > etc..) the dictionary is always attached to the value, the actual class | > data type you pass around. in haskell, the dictionary is passed | > separately and the appropriae one is infered by the type system. | | your letter is damn close to that i wrote in | http://haskell.org/haskellwiki/OOP_vs_type_classes | although i mentioned not only pluses but also drawbacks of type | classes: lack of record extension mechanisms (such at that implemented | in O'Haskell) and therefore inability to reuse operation | implementation in an derived data type, lack of downcasting mechanism | (which bites me all the way), requirement to rebuild dictionaries in | polymorphic operations what is slow enough
I would appreciate if you could revise the comparison based on the material I just sent, that illustrates my earlier comments. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
