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// Boost.Range library
//
// Copyright Thorsten Ottosen 2003-2004. Use, modification and
// distribution is subject to the Boost Software License, Version
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// For more information, see http://www.boost.org/libs/range/
//
#include <iostream>
namespace A
{
namespace detail
{
template< typename T >
int f( const T& x )
{
// Default:
std::cout << 1 << std::endl;
return 1;
}
template< typename T >
int adl_f2( const T& x, int* )
{
return f( x );
}
template< typename T >
int adl_f( const T& x )
{
return adl_f2( x, 0 );
}
}
template< typename T >
int f( const T& x )
{
return detail::adl_f( x );
}
template< typename T >
int adl_f2( const T& x, int )
{
return detail::f( x );
}
//--------------------------------
class C {};
/*
// Optional:
int f( const C& x )
{
std::cout << 2 << std::endl;
}
*/
template< typename T >
class D {};
/*
// Optional:
template< typename T >
int f( const D< T >& x )
{
std::cout << 3 << std::endl;
}
*/
}
namespace B
{
class C {};
// Optional:
/* int f( const C& )
{
std::cout << 4 << std::endl;
}
*/
template< typename T >
class D {};
/*
// Optional:
template< typename T >
int f( const D< T >& x )
{
std::cout << 5 << std::endl;
}
*/
}
int main()
{
A::f( 42 );
A::C ac;
A::f( ac );
A::D< int > ad;
A::f( ad );
B::C bc;
A::f( bc );
B::D< int > bd;
A::f( bd );
}
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