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/* 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 <iostream>
namespace X {
template<typename T> void f(T);
}
namespace N {
using namespace X;
enum E { e1 };
void f(E) {
std::cout << "N::f(N::E) called\n";
}
}
void f(int)
{
std::cout << "::f(int) called\n";
}
int main()
{
::f(N::e1); // qualified function name: no ADL
f(N::e1); // ordinary lookup finds ::f() and ADL finds N::f(),
} // the latter is preferred
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