Hello Mauricio, Monday, September 30, 2002, 7:16:57 PM, you wrote: MF> Even w/ dynamic typing, method dispatching can be made quite fast: look MF> at Psyco, the specializing Python compiler. Not as relevant to AST tree MF> walks as to bytecode interpretation, though. well, i think that we can combine hashing and offsets for method dispatching - just analyze the program and create offset entry in all classes for all method names we found -- Best regards, Bulat mailto:bulatz / integ.ru