Overloading virtual () with __call__

[ipcamit]

I am trying to port a purely virtual overloaded operator () , such that it can be defined over python side by defining __call__ method.

As per the documentation I define a trampoline function with operator signature

...
double operator()(const Vector3d& vec) const override {PYBIND11_OVERRIDE_PURE_NAME(
        double,
        MethodUser,
        "__call__",
        vec
    );}
...
m.def("test_user_op", [](const Vector3d& vec, MethodUser &mu){
        auto r = mu( vec);
        return r;
    });

then extend it on python side as:

class MU(MethodUser):
     def __call__(self, x):
         return x
mu = MU()
test_user_op(x, mu)

As expected, when I access this class on C++ side , I get the following error:

TypeError: __call__() missing 1 required positional argument: 'x'

Is what I am trying possible? Can we turn a purely virtual () operator to python __call__ ?

Any comments are welcome

[ipcamit]

I figured it out, my syntax was wrong. I thought PYBIND11_OVERRIDE_PURE and PYBIND11_OVERRIDE_PURE_NAME had same syntax. It is working now