123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051 |
- // 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/typeof/typeof.hpp>
- #include BOOST_TYPEOF_INCREMENT_REGISTRATION_GROUP()
- #include <boost/detail/lightweight_test.hpp>
- #include <vector>
- #include <algorithm>
- struct adder;
- BOOST_TYPEOF_REGISTER_TYPE(adder) // Register before `bind this_` below.
- //[add_this
- struct adder {
- adder() : sum_(0) {}
- int sum(const std::vector<int>& nums, const int factor = 10) {
- void BOOST_LOCAL_FUNCTION(const bind factor, bind this_, int num) {
- this_->sum_ += factor * num; // Use `this_` instead of `this`.
- } 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
|