If you export an abstract class, create an object from python and call its virtual from C++ it should not work without the default implementation.
On Mon, Aug 17, 2015 at 8:03 AM, Stefan Seefeld <ste...@seefeld.name> wrote: > Hi, > > I'm reviewing the Boost.Python tutorial, and I'm stumbling over the > section on "Virtual Functions with Default implementations" > ( > http://boostorg.github.io/python/doc/html/tutorial/tutorial/exposing.html#tutorial.exposing.virtual_functions_with_default_i > ). > It mentions the need to provide a separate default implementation > function as third argument to "def()", without explaining why that is > needed. > In fact, I'm trying various alternatives (abstract, non-abstract), and I > can't find a need for it. All my tests work fine without it. > > Does anyone know why this is needed, and could perhaps even provide a > little test case ? > > Thanks, > Stefan > > -- > > ...ich hab' noch einen Koffer in Berlin... > > _______________________________________________ > Cplusplus-sig mailing list > Cplusplus-sig@python.org > https://mail.python.org/mailman/listinfo/cplusplus-sig >
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