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- // Boost.Range library
- //
- // Copyright Neil Groves 2009. Use, modification and
- // distribution is subject to the Boost Software License, Version
- // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- //
- //
- // For more information, see http://www.boost.org/libs/range/
- //
- //[transformed_example
- #include <boost/range/adaptor/transformed.hpp>
- #include <boost/range/algorithm/copy.hpp>
- #include <boost/assign.hpp>
- #include <iterator>
- #include <iostream>
- #include <vector>
- //<-
- #include <boost/test/test_tools.hpp>
- #include <boost/test/unit_test.hpp>
- #include <boost/range/algorithm_ext/push_back.hpp>
- namespace
- {
- //->
- struct double_int
- {
- typedef int result_type;
- int operator()(int x) const { return x * 2; }
- };
- //<-
- void transformed_example_test()
- //->
- //=int main(int argc, const char* argv[])
- {
- using namespace boost::adaptors;
- using namespace boost::assign;
- std::vector<int> input;
- input += 1,2,3,4,5,6,7,8,9,10;
-
- boost::copy(
- input | transformed(double_int()),
- std::ostream_iterator<int>(std::cout, ","));
- //= return 0;
- //=}
- //]
- std::vector<int> reference;
- reference += 2,4,6,8,10,12,14,16,18,20;
- std::vector<int> test;
- boost::push_back(test, input | transformed(double_int()));
- BOOST_CHECK_EQUAL_COLLECTIONS( reference.begin(), reference.end(),
- test.begin(), test.end() );
- }
- }
- boost::unit_test::test_suite*
- init_unit_test_suite(int argc, char* argv[])
- {
- boost::unit_test::test_suite* test
- = BOOST_TEST_SUITE( "RangeTestSuite.adaptor.transformed_example" );
- test->add( BOOST_TEST_CASE( &transformed_example_test ) );
- return test;
- }
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