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/local_function.hpp> 9 #include <boost/typeof/typeof.hpp> 10 #include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP() 11 #include <boost/detail/lightweight_test.hpp> 12 #include <vector> 13 #include <algorithm> 14 15 struct adder; 16 BOOST_TYPEOF_REGISTER_TYPE(adder) // Register before `bind this_` below. 17 18 struct adder { adderadder19 adder() : sum_(0) {} 20 sumadder21 int sum(const std::vector<int>& nums, const int factor = 10) { 22 23 void BOOST_LOCAL_FUNCTION( (const bind factor) (bind this_) 24 (int num) ) { 25 this_->sum_ += factor * num; 26 } BOOST_LOCAL_FUNCTION_NAME(add) 27 28 std::for_each(nums.begin(), nums.end(), add); 29 return sum_; 30 } 31 32 private: 33 int sum_; 34 }; 35 main(void)36int main(void) { 37 std::vector<int> v(3); 38 v[0] = 1; v[1] = 2; v[2] = 3; 39 40 BOOST_TEST(adder().sum(v) == 60); 41 return boost::report_errors(); 42 } 43 44