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/spirit/include/phoenix.hpp>
9 #include <boost/detail/lightweight_test.hpp>
10 #include <algorithm>
11 #include <iostream>
12
13 //[add_phoenix
main(void)14 int main(void) {
15 using boost::phoenix::let;
16 using boost::phoenix::local_names::_f;
17 using boost::phoenix::cref;
18 using boost::phoenix::ref;
19 using boost::phoenix::arg_names::_1;
20
21 int sum = 0, factor = 10;
22 int nums[] = {1, 2, 3};
23
24 // Passed to template, `factor` by constant, and defined in expression.
25 std::for_each(nums, nums + 3, let(_f = cref(factor))[
26 // Unfortunately, body cannot use C++ statement syntax.
27 ref(sum) += _f * _1, _1 // Access `sum` by reference.
28 ]);
29
30 BOOST_TEST(sum == 60);
31 return boost::report_errors();
32 }
33 //]
34
35