dummy.cpp

	struct DummyBase
	{
		DummyBase() : val(5) {}
		DummyBase(int newVal) : val(newVal) {}

		void set_val(int newVal) { val = newVal; }
		int get_val() const { return val; }
	private:
		int val;
	};

	struct RealDummy : public DummyBase
	{
		using DummyBase::DummyBase;
		string to_string() const { return "MAGIC!"; }
	};

	auto bcs = py::class_<DummyBase>(m,"DummyBase")
		.def(py::init<>())
		.def(py::init<int>())
		.def("setVal",[](DummyBase* tgt, int newVal) -> DummyBase* { tgt->set_val(newVal); return tgt; },py::return_value_policy::reference)
		.def("getVal",[](const DummyBase& tgt) -> int { return tgt.get_val(); });

	auto dum = py::class_<RealDummy>(m,"RealDummy",bcs)
		.def(py::init<>())
		.def(py::init<int>())
		.def("__str__",[](const RealDummy& tgt) { return tgt.to_string(); });