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- // (C) Copyright Jeremy Siek 2000-2004.
- // Distributed under 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)
- #include <boost/config.hpp>
- #include <algorithm>
- #include <iostream>
- #include <iterator>
- #include <vector>
- #include <boost/iterator/counting_iterator.hpp>
- #include <boost/iterator/indirect_iterator.hpp>
- #include <boost/cstdlib.hpp>
- int main(int, char*[])
- {
- // Example of using counting_iterator
- std::cout << "counting from 0 to 4:" << std::endl;
- boost::counting_iterator<int> first(0), last(4);
- std::copy(first, last, std::ostream_iterator<int>(std::cout, " "));
- std::cout << std::endl;
- // Example of using counting iterator to create an array of pointers.
- int N = 7;
- std::vector<int> numbers;
- typedef std::vector<int>::iterator n_iter;
- // Fill "numbers" array with [0,N)
- std::copy(
- boost::counting_iterator<int>(0)
- , boost::counting_iterator<int>(N)
- , std::back_inserter(numbers));
- std::vector<std::vector<int>::iterator> pointers;
- // Use counting iterator to fill in the array of pointers.
- // causes an ICE with MSVC6
- std::copy(boost::make_counting_iterator(numbers.begin()),
- boost::make_counting_iterator(numbers.end()),
- std::back_inserter(pointers));
- // Use indirect iterator to print out numbers by accessing
- // them through the array of pointers.
- std::cout << "indirectly printing out the numbers from 0 to "
- << N << std::endl;
- std::copy(boost::make_indirect_iterator(pointers.begin()),
- boost::make_indirect_iterator(pointers.end()),
- std::ostream_iterator<int>(std::cout, " "));
- std::cout << std::endl;
-
- return boost::exit_success;
- }
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