// Function library

// Copyright (C) 2001-2003 Douglas Gregor

// 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/

#if defined(__clang__) && defined(__has_warning)

# if __has_warning( "-Wdeprecated-declarations" )

# pragma clang diagnostic ignored "-Wdeprecated-declarations"

# endif

#endif

#if defined(__GNUC__) && __GNUC__ >= 12

# pragma GCC diagnostic ignored "-Wdeprecated-declarations"

#endif

#include <boost/function.hpp>

#include <iostream>

#include <functional>

struct X {

int foo(int);

};

int X::foo(int x) { return -x; }

int main()

{

#ifndef BOOST_NO_CXX98_BINDERS

boost::function<int (int)> f;

X x;

f = std::bind1st(

std::mem_fun(&X::foo), &x);

f(5); // Call x.foo(5)

#endif

return 0;

}