Why does C++ not let baseclasses implement a derived class' inherited interface?

Question

Here is what I am talking about

// some guy wrote this, used as a Policy with templates
struct MyWriter {
  void write(std::vector const& dat         


        

Answer 1

Just make MyWriter derive from IWriter, eliminate the IWriter derivation in MyOwnClass, and move on with life. This should resolve the problem and should not interfere with the template code.