Method get_buffer

tests/test_buffers.cpp:536–543

Exercises def_buffer(Return (Class::*)(Args...) & noexcept)

        ~OneDBufferLRefNoexcept() { delete[] m_data; }
        // Exercises def_buffer(Return (Class::*)(Args...) & noexcept)
        py::buffer_info get_buffer() & noexcept {
            return py::buffer_info(m_data,
                                   sizeof(float),
                                   py::format_descriptor<float>::format(),
                                   1,
                                   {m_n},
                                   {(py::ssize_t) sizeof(float)});
        }
    };
    py::class_<OneDBufferLRefNoexcept>(m, "OneDBufferLRefNoexcept", py::buffer_protocol())
        .def(py::init<py::ssize_t>())