1 /*=============================================================================
2 Copyright (c) 2001-2007 Joel de Guzman
3
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 ==============================================================================*/
7 #include <iostream>
8 #include <cmath>
9 #include <algorithm>
10 #include <vector>
11
12 #include <boost/detail/lightweight_test.hpp>
13 #include <boost/phoenix/core.hpp>
14 #include <boost/phoenix/operator.hpp>
15 #include <boost/phoenix/scope.hpp>
16 #include <boost/phoenix/function.hpp>
17
18 namespace boost { namespace phoenix
19 {
20 struct for_each_impl
21 {
22 template <typename C, typename F>
23 struct result
24 {
25 typedef void type;
26 };
27
28 template <typename C, typename F>
operator ()boost::phoenix::for_each_impl29 void operator()(C& c, F f) const
30 {
31 std::for_each(c.begin(), c.end(), f);
32 }
33 };
34
35 function<for_each_impl> const for_each = for_each_impl();
36
37 struct push_back_impl
38 {
39 template <typename C, typename T>
40 struct result
41 {
42 typedef void type;
43 };
44
45 template <typename C, typename T>
operator ()boost::phoenix::push_back_impl46 void operator()(C& c, T& x) const
47 {
48 c.push_back(x);
49 }
50 };
51
52 function<push_back_impl> const push_back = push_back_impl();
53 }}
54
55 using namespace boost::phoenix;
56 using namespace boost::phoenix::arg_names;
57 using namespace boost::phoenix::local_names;
58 using namespace std;
59
60 struct zzz {};
61
62 int
main()63 main()
64 {
65 {
66 using boost::phoenix::for_each;
67
68 int init[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
69 std::vector<int> v(init, init+10);
70
71 int x = 0;
72 for_each(_1, lambda(_a = _2)[_a += _1])(v, x);
73 BOOST_TEST(x == 55);
74 }
75
76 {
77 using boost::phoenix::for_each;
78 using boost::phoenix::push_back;
79
80 int x = 10;
81 std::vector<std::vector<int> > v(10);
82
83 for_each(_1, lambda(_a = _2)[push_back(_1, _a)])(v, x);
84
85 int y = 0;
86 for_each(arg1, lambda[ref(y) += _1[0]])(v);
87 BOOST_TEST(y == 100);
88 }
89 return boost::report_errors();
90 }
91
92