sam a écrit : > > Some time ago (2004) there were talks about prototype-based languages > and Prothon emerged. > > Can someone tell me why class-based OO is better that Prototype based,
For which definition of "better" ?-) > especially in scripting langage with dynamic types as Python is? > > > Here are some links: > > http://c2.com/cgi/wiki?PrototypeBasedProgramming Most of the arguments in favor of prototypes seems to come to, mainly: 1/ it lets you customize behaviour on a per-object base 2/ it removes the mental overhead of inheritance, classes etc Point 1. is a non-problem in Python, since you can already add/replace methods on a per-objec basis (ok, with a couple restrictions wrt/ __magic__ methods and such). Point 2. is not (IMHO) such a problem in Python, where inheritance is mainly an implementation detail (it's not needed for polymorphic dispatch to work) and class hierarchy tend to be very flat, when they even exist. Mainly, Python's object system is actually quite close to javascript here. That is, you get more or less the same flexibility. And a couple of powerful features you don't have with javascript (like hooks in the attribute lookup mechanism), too. -- http://mail.python.org/mailman/listinfo/python-list