I'm having trouble declaring a template class. I've tried an number of ill-readable and non-sensical combinations.

template <class C, class M >
class BlockCipherGenerator : public KeyGenerator
{ ... private: M < C > m_cipher;
};

And

template <class C, class M >
class BlockCipherGenerator : public KeyGenerator
{ typedef typename C::value_type CIPHER; typedef typename M::value_type MODE; private: MODE < CIPHER > m_cipher;
};

1 Answer

It's what it says.

Your template parameter list says that M is a class, not a template.

If you say that it's a class template, then everything's fine:

template <class C, template <class C> class M>
class BlockCipherGenerator : public KeyGenerator
{ M<C> m_cipher;
};

---

Remember, something like std::vector is not a class, but a class template. Something like std::vector<int> is a class (type).

2

Your Answer

Sign up or log in

Sign up using Google Sign up using Facebook Sign up using Email and Password Submit

Post as a guest

Post Your Answer Discard

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.