> One could imagine writing a fancy converter that would allow the first > form by making a temporary std::vector, passing that to the C++ > function, and then copying the elements in the vector back into the > Python list. But that's potentially a very expensive sequence of > operations, and it's actually impossible to do that through a registered > converter in Boost.Python.
In some cases, such a converter makes sense, I wrote one (see http://bazaar.launchpad.net/~eudoxos/+junk/tr2/view/head:/py/wrapper/customConverters.cpp#L142, then its specializations for various types below). Where std::vector<containedType> arg is expected, it will check whether the python object is a sequence and then convert is to the c++ vector. Of course the objects are being copied, not referenced, unless those objects are shared_ptr's, in which case you get reference semantics you asked for. Cheers, vaclav _______________________________________________ Cplusplus-sig mailing list Cplusplus-sig@python.org http://mail.python.org/mailman/listinfo/cplusplus-sig
