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 <iostream>
#include <typeinfo>
#include <type_traits>
#include "decay.hpp"
template<typename T>
void printDecayedType()
{
using A = typename DecayT<T>::Type;
std::cout << "Parameter type: " << typeid(A).name() << '\n';
std::cout << "- is int: " << std::is_same<A,int>::value << '\n';
std::cout << "- is const: " << std::is_const<A>::value << '\n';
std::cout << "- is pointer: " << std::is_pointer<A>::value << '\n';
}
int main()
{
printDecayedType<int>();
printDecayedType<int const>();
printDecayedType<int[7]>();
printDecayedType<int(int)>();
}