| |
| // Copyright (C) 2009-2012 Lorenzo Caminiti |
| // Distributed under the Boost Software License, Version 1.0 |
| // (see accompanying file LICENSE_1_0.txt or a copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| // Home at http://www.boost.org/libs/local_function |
| |
| #include <boost/config.hpp> |
| #ifdef BOOST_NO_CXX11_VARIADIC_MACROS |
| # error "variadic macros required" |
| #else |
| |
| #include <boost/local_function.hpp> |
| #include <boost/detail/lightweight_test.hpp> |
| #include <vector> |
| #include <algorithm> |
| |
| //[add_typed |
| struct adder { |
| adder(void) : sum_(0) {} |
| |
| int sum(const std::vector<int>& nums, const int& factor = 10) { |
| // Explicitly specify bound variable and return types (no type-of). |
| BOOST_LOCAL_FUNCTION(const bind(const int&) factor, |
| bind(adder*) this_, int num, return int) { |
| return this_->sum_ += factor * num; |
| } BOOST_LOCAL_FUNCTION_NAME(add) |
| |
| std::for_each(nums.begin(), nums.end(), add); |
| return sum_; |
| } |
| |
| private: |
| int sum_; |
| }; |
| //] |
| |
| int main(void) { |
| std::vector<int> v(3); |
| v[0] = 1; v[1] = 2; v[2] = 3; |
| |
| BOOST_TEST(adder().sum(v) == 60); |
| return boost::report_errors(); |
| } |
| |
| #endif // VARIADIC_MACROS |
| |