pybind11/tests/test_virtual_functions.cpp

279     class OverrideTest {
284         explicit OverrideTest(const std::string &v) : v{v} {}
289         virtual ~OverrideTest() = default;
292     class PyOverrideTest : public OverrideTest {
294         using OverrideTest::OverrideTest;
295         std::string str_value() override { PYBIND11_OVERLOAD(std::string, OverrideTest, str_value); }
298 //      std::string &str_ref() override { PYBIND11_OVERLOAD(std::string &, OverrideTest, str_ref); }
302         std::string str_ref_helper() { PYBIND11_OVERLOAD(std::string, OverrideTest, str_ref); }
306         A A_value() override { PYBIND11_OVERLOAD(A, OverrideTest, A_value); }
307         A &A_ref() override { PYBIND11_OVERLOAD(A &, OverrideTest, A_ref); }
310     py::class_<OverrideTest::A>(m, "OverrideTest_A")
311         .def_readwrite("value", &OverrideTest::A::value);
312     py::class_<OverrideTest, PyOverrideTest>(m, "OverrideTest")
314         .def("str_value", &OverrideTest::str_value)
315 //      .def("str_ref", &OverrideTest::str_ref)
316         .def("A_value", &OverrideTest::A_value)
317         .def("A_ref", &OverrideTest::A_ref);