1 // Boost.Range library
2 //
3 // Copyright Neil Groves 2009. Use, modification and
4 // distribution is subject to the Boost Software License, Version
5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt)
7 //
8 //
9 // For more information, see http://www.boost.org/libs/range/
10 //
11 //[transformed_example
12 #include <boost/range/adaptor/transformed.hpp>
13 #include <boost/range/algorithm/copy.hpp>
14 #include <boost/assign.hpp>
15 #include <iterator>
16 #include <iostream>
17 #include <vector>
18
19 //<-
20 #include <boost/test/test_tools.hpp>
21 #include <boost/test/unit_test.hpp>
22
23 #include <boost/range/algorithm_ext/push_back.hpp>
24
25 namespace
26 {
27 //->
28 struct double_int
29 {
30 typedef int result_type;
operator ()__anona0d336490111::double_int31 int operator()(int x) const { return x * 2; }
32 };
33
34 //<-
transformed_example_test()35 void transformed_example_test()
36 //->
37 //=int main(int argc, const char* argv[])
38 {
39 using namespace boost::adaptors;
40 using namespace boost::assign;
41
42 std::vector<int> input;
43 input += 1,2,3,4,5,6,7,8,9,10;
44
45 boost::copy(
46 input | transformed(double_int()),
47 std::ostream_iterator<int>(std::cout, ","));
48
49 //= return 0;
50 //=}
51 //]
52 std::vector<int> reference;
53 reference += 2,4,6,8,10,12,14,16,18,20;
54
55 std::vector<int> test;
56 boost::push_back(test, input | transformed(double_int()));
57
58 BOOST_CHECK_EQUAL_COLLECTIONS( reference.begin(), reference.end(),
59 test.begin(), test.end() );
60 }
61 }
62
63 boost::unit_test::test_suite*
init_unit_test_suite(int argc,char * argv[])64 init_unit_test_suite(int argc, char* argv[])
65 {
66 boost::unit_test::test_suite* test
67 = BOOST_TEST_SUITE( "RangeTestSuite.adaptor.transformed_example" );
68
69 test->add( BOOST_TEST_CASE( &transformed_example_test ) );
70
71 return test;
72 }
73