Method operator()

include/pybind11/functional.h:51–55

struct func_wrapper : func_wrapper_base {
    using func_wrapper_base::func_wrapper_base;
    Return operator()(Args... args) const { // NOLINT(performance-unnecessary-value-param)
        gil_scoped_acquire acq;
        // casts the returned object as a rvalue to the return type
        return hfunc.f(std::forward<Args>(args)...).template cast<Return>();
    }
};

PYBIND11_NAMESPACE_END(type_caster_std_function_specializations)