Martin v. Löwis wrote: >> That's why I'd like my alternative proposal (int as ABC and two >> subclasses that may remain anonymous to the Python user); it'll save >> the alignment waste for short ints and will let us use a smaller int >> type for the size for long ints (if we care about the latter). > > I doubt they can remain anonymous. People often dispatch by type > (e.g. pickle, xmlrpclib, ...), and need to put the type into a > dictionary. If the type is anonymous, they will do > > dispatch[type(0)] = marshal_int > dispatch[type(sys.maxint+1)] = marshal_int
"may remain anonymous" may also mean that type(v) is type(int) for all integers. but I think isinstance(v, int) should be good enough for Py3K; I really hope all the talk about typing and multimethods and stuff results in tools that can be used to implement explicit dispatch machineries such as the one in XML-RPC (why not turn all the marshal methods into a single multimethod?) </F>
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