Efficient Way To Binding a Templated Function

[WeihangGuo]

I am trying to bind the function void func(const A<>&, const A<>&). To handle templates, I used def_submodule() to explicitly create instances like A<B>, A<C>, etc. Now, what is the best way to bind func?

I found this link: Nanobind - Tag-based Polymorphism, which suggests using a switch statement. However, since there could be hundreds of combinations, is there a more efficient way to handle this automatically?

Thank you so much for your help!

[oremanj]

You will need to provide a different binding for each template argument you want to support. You can express them as an overload set so that nanobind will select the right one for the type of object you pass. For example:

mymod
    .def("func", &func<A>)
    .def("func", &func<B>)
    .def("func", &func<C>);

Tag-based polymorphism is for when you have an inheritance hierarchy where a base class member tells you what the derived type is. It's unlikely to be relevant in this situation.