map_keys_example.cpp 1.5 KB

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  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. //[map_keys_example
  12. #include <boost/range/adaptor/map.hpp>
  13. #include <boost/range/algorithm/copy.hpp>
  14. #include <boost/assign.hpp>
  15. #include <iterator>
  16. #include <iostream>
  17. #include <map>
  18. #include <vector>
  19. //<-
  20. #include <boost/test/test_tools.hpp>
  21. #include <boost/test/unit_test.hpp>
  22. #include <boost/range/algorithm_ext/push_back.hpp>
  23. namespace
  24. {
  25. void map_keys_example_test()
  26. //->
  27. //=int main(int argc, const char* argv[])
  28. {
  29. using namespace boost::assign;
  30. using namespace boost::adaptors;
  31. std::map<int,int> input;
  32. for (int i = 0; i < 10; ++i)
  33. input.insert(std::make_pair(i, i * 10));
  34. boost::copy(
  35. input | map_keys,
  36. std::ostream_iterator<int>(std::cout, ","));
  37. //= return 0;
  38. //=}
  39. //]
  40. std::vector<int> reference;
  41. reference += 0,1,2,3,4,5,6,7,8,9;
  42. std::vector<int> test;
  43. boost::push_back(test, input | map_keys);
  44. BOOST_CHECK_EQUAL_COLLECTIONS( reference.begin(), reference.end(),
  45. test.begin(), test.end() );
  46. }
  47. }
  48. boost::unit_test::test_suite*
  49. init_unit_test_suite(int argc, char* argv[])
  50. {
  51. boost::unit_test::test_suite* test
  52. = BOOST_TEST_SUITE( "RangeTestSuite.adaptor.map_keys_example" );
  53. test->add( BOOST_TEST_CASE( &map_keys_example_test ) );
  54. return test;
  55. }