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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 <vector>
- #include <iostream>
- #include <iterator>
- #include <functional>
- #include <algorithm>
- #include <boost/iterator/indirect_iterator.hpp>
- int main(int, char*[])
- {
- char characters[] = "abcdefg";
- const int N = sizeof(characters)/sizeof(char) - 1; // -1 since characters has a null char
- char* pointers_to_chars[N]; // at the end.
- for (int i = 0; i < N; ++i)
- pointers_to_chars[i] = &characters[i];
- // Example of using indirect_iterator
-
- boost::indirect_iterator<char**, char>
- indirect_first(pointers_to_chars), indirect_last(pointers_to_chars + N);
- std::copy(indirect_first, indirect_last, std::ostream_iterator<char>(std::cout, ","));
- std::cout << std::endl;
-
- // Example of making mutable and constant indirect iterators
- char mutable_characters[N];
- char* pointers_to_mutable_chars[N];
- for (int j = 0; j < N; ++j)
- pointers_to_mutable_chars[j] = &mutable_characters[j];
- boost::indirect_iterator<char* const*> mutable_indirect_first(pointers_to_mutable_chars),
- mutable_indirect_last(pointers_to_mutable_chars + N);
- boost::indirect_iterator<char* const*, char const> const_indirect_first(pointers_to_chars),
- const_indirect_last(pointers_to_chars + N);
- std::transform(const_indirect_first, const_indirect_last,
- mutable_indirect_first, std::bind1st(std::plus<char>(), 1));
- std::copy(mutable_indirect_first, mutable_indirect_last,
- std::ostream_iterator<char>(std::cout, ","));
- std::cout << std::endl;
-
- // Example of using make_indirect_iterator()
- std::copy(boost::make_indirect_iterator(pointers_to_chars),
- boost::make_indirect_iterator(pointers_to_chars + N),
- std::ostream_iterator<char>(std::cout, ","));
- std::cout << std::endl;
-
- return 0;
- }
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