Function operator=

include/pybind11/pytypes.h:1084–1084

accessor overload required to override default assignment operator (templates are not allowed to replace default compiler-generated assignments).

    // accessor overload required to override default assignment operator (templates are not
    // allowed to replace default compiler-generated assignments).
    void operator=(const accessor &a) && { std::move(*this).operator=(handle(a)); }
    void operator=(const accessor &a) & { operator=(handle(a)); }

    template <typename T>