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// 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_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
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