The following code example is taken from the book
C++ Templates - The Complete Guide, 2nd Edition
by David Vandevoorde, Nicolai M. Josuttis, and Douglas Gregor,
Addison-Wesley, 2017
© Copyright David Vandevoorde, Nicolai M. Josuttis, Douglas Gregor 2017
#include "objectcounter.hpp"
#include <iostream>
template<typename CharT>
class MyString : public ObjectCounter<MyString<CharT>> {
//...
};
int main()
{
MyString<char> s1, s2;
MyString<wchar_t> ws;
std::cout << "num of MyString<char>: "
<< MyString<char>::live() << '\n';
std::cout << "num of MyString<wchar_t>: "
<< ws.live() << '\n';
}