1 2 // Copyright (C) 2009-2012 Lorenzo Caminiti 3 // Distributed under the Boost Software License, Version 1.0 4 // (see accompanying file LICENSE_1_0.txt or a copy at 5 // http://www.boost.org/LICENSE_1_0.txt) 6 // Home at http://www.boost.org/libs/local_function 7 8 #include <boost/config.hpp> 9 #ifdef BOOST_NO_CXX11_VARIADIC_MACROS 10 # error "variadic macros required" 11 #else 12 13 #include <boost/local_function.hpp> 14 #include <boost/function.hpp> 15 #include <boost/detail/lightweight_test.hpp> 16 inc(int & value)17boost::function<int (void)> inc(int& value) { 18 int BOOST_LOCAL_FUNCTION(bind& value) { 19 return ++value; 20 } BOOST_LOCAL_FUNCTION_NAME(i) 21 return i; 22 } 23 main(void)24int main(void) { 25 int value1 = 0; // Reference valid in scope where closure is used. 26 boost::function<int (void)> inc1 = inc(value1); 27 int value2 = 0; 28 boost::function<int (void)> inc2 = inc(value2); 29 30 BOOST_TEST(inc1() == 1); 31 BOOST_TEST(inc1() == 2); 32 BOOST_TEST(inc2() == 1); 33 BOOST_TEST(inc1() == 3); 34 return boost::report_errors(); 35 } 36 37 #endif // VARIADIC_MACROS 38 39