Wrapping C++ template function/method in Cython

Question

I'm trying to wrap some C++ Code with Cython. I have a class that utilizes a template method, but is not a template itself.

class SomeClass {
    template <class T> SomeClass(T& spam);
};

As the class is not a template but only the Constructor, I cannot declare the class as a template in Cython like this.

# wrong!
cdef extern from "SomeClass.h":
    cppclass SomeClass [T]:
        SomeClass(T& spam)

How can I wrap the template-method?

Answer 1

For a non-constructor template method, using the following non-template class:

class SomeClass {
    template <class T> void other(T& spam);
};

I was able to get this to work:

cdef extern from "someclass.h":
    cppclass SomeClass:
        void other[T](T &spam)

That may not help you if you specifically need a constructor template method, but it does appear that Cython's support for template methods has improved at least slightly since the time when this question was originally asked.