1 // Boost.Function library examples 2 3 // Copyright Douglas Gregor 2001-2003. Use, modification and 4 // distribution is subject to the Boost Software License, Version 5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at 6 // http://www.boost.org/LICENSE_1_0.txt) 7 8 // For more information, see http://www.boost.org 9 10 #include <iostream> 11 #include <boost/function.hpp> 12 13 struct int_div { operator ()int_div14 float operator()(int x, int y) const { return ((float)x)/y; }; 15 }; 16 17 int main()18main() 19 { 20 boost::function<float (int, int)> f; 21 f = int_div(); 22 23 std::cout << f(5, 3) << std::endl; // 1.66667 24 25 return 0; 26 } 27