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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/detail/lightweight_test.hpp>
#include <algorithm>
//[add_global_functor
// Unfortunately, cannot be defined locally (so not a real alternative).
struct global_add { // Unfortunately, boilerplate code to program the class.
global_add(int& _sum, int _factor): sum(_sum), factor(_factor) {}
inline void operator()(int num) { // Body uses C++ statement syntax.
sum += factor * num;
}
private: // Unfortunately, cannot bind so repeat variable types.
int& sum; // Access `sum` by reference.
const int factor; // Make `factor` constant.
};
int main(void) {
int sum = 0, factor = 10;
global_add add(sum, factor);
add(1);
int nums[] = {2, 3};
std::for_each(nums, nums + 2, add); // Passed as template parameter.
BOOST_TEST(sum == 60);
return boost::report_errors();
}
//]
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