overloading friend operator<< for template class

Question

I have read couple of the questions regarding my problem on StackOverflow.com now, and none of it seems to solve my problem. Or I maybe have done it wrong... The overloaded

Answer 1

You can't declare a friend like that, you need to specify a different template type for it.

template 
friend ostream& operator<< (ostream & os, const D& rhs);

note SclassT so that it doesn't shadow classT. When defining

template 
ostream& operator<< (ostream & os, const D& rhs)
{
  // body..
}