Hello, I have a few doubts and questions I haven't found answer googling here and there. I hope you can help me with them.
1. When exposing C++ objects to python using Boost, instance dictionaries are created only "on demand", the first time the instance's __dict__ attribute is accessed [http://wiki.python.org/moin/boost.python/InternalDataStructures] Some Python scripts make use of __dict__, and here dicts are created only after assigning a value to non-existent (non-c++-defined) members. Is there any way to overcome this? 2. Is it possible to expose variadic functions to Python? Like: inline int printInts(int num, ...); 3. Is there a way to pass a list or dict object with all the arguments to a function as a single parameter? This is possible in Python C when calling a function and might be sometimes very useful. 4. The docs regarding the mutable copying problem are very misleading. Following Python and Boost scripts do not produce the same results: b = a = [] c = list(a) a.append("s1") print a.count("s1"), b.count("s1"), c.count("s1") #1 1 0 list a, b, c; b = a; c = list(a); a.append("s1"); list d = extract<list>(a); printf("%i %i %i %i\n", a.count("s1"), b.count("s1"), c.count("s1"), d.count("s1")); //1 1 1 1 expected 1 1 0 1 according to Pythonic behaviour. This is in confilct with example provided in the tutorial. 5. BOOST_PYTHON_FUNCTION_OVERLOADS and friends on my MSVC10 produce errors C2246 and C2892. 6. Is it ok to expose to Python just some properties/methods of a c++ class? As long as all classes, that the mentioned class inherits after, are defined in boost python, I assume there is no risk that objects created in Python are not complete and compatible (i.e. might not work properly when extracted back to C++). Is this assumption valid? I can provide an example if my intentions are not clear to you. thanks _______________________________________________ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
