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 <string>
#include <iostream>
class C {
public:
C() = default;
C (C const&) {
std::cout << "copy constructor\n";
}
C (C&&) {
std::cout << "move constructor\n";
}
template<typename T>
C (T&&) {
std::cout << "template constructor\n";
}
};
int main()
{
C x;
C x2{x}; // prints: template constructor
C x3{std::move(x)}; // prints: move constructor
C const c;
C x4{c}; // prints: copy constructor
C x5{std::move(c)}; // prints: template constructor
}