refnonref.cpp

C++ Templates 完全导引范例

/* The following code example is taken from the book
 * "C++ Templates - The Complete Guide"
 * by David Vandevoorde and Nicolai M. Josuttis, Addison-Wesley, 2002
 *
 * (C) Copyright David Vandevoorde and Nicolai M. Josuttis 2002.
 * Permission to copy, use, modify, sell and distribute this software
 * is granted provided this copyright notice appears in all copies.
 * This software is provided "as is" without express or implied
 * warranty, and with no claim as to its suitability for any purpose.
 */
#include <typeinfo>
#include <iostream>

template <typename T>
void ref (T const& x)
{
    std::cout << "x in ref(T const&): "  
              << typeid(x).name() << '\n';
}

template <typename T>
void nonref (T x)
{
    std::cout << "x in nonref(T):     "
              << typeid(x).name() << '\n';
}

int main()
{
    ref("hello");
    nonref("hello");
}