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
template<typename T> // a namespace scope class template
class Data {
public:
static constexpr bool copyable = true;
//...
};
template<typename T> // a namespace scope function template
void log (T x) {
//...
}
template<typename T> // a namespace scope variable template (since C++14)
T zero = 0;
template<typename T> // a namespace scope variable template (since C++14)
bool dataCopyable = Data<T>::copyable;
template<typename T> // a namespace scope alias template
using DataList = Data<T*>;