| 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 | // For more information, see http://www.boost.org/libs/range/ |
| 9 | // |
| 10 | #ifndef BOOST_RANGE_ALGORITHM_EXT_IOTA_HPP_INCLUDED |
| 11 | #define BOOST_RANGE_ALGORITHM_EXT_IOTA_HPP_INCLUDED |
| 12 | |
| 13 | #include <boost/range/config.hpp> |
| 14 | #include <boost/range/concepts.hpp> |
| 15 | #include <boost/range/iterator.hpp> |
| 16 | #include <boost/range/begin.hpp> |
| 17 | #include <boost/range/end.hpp> |
| 18 | |
| 19 | namespace boost |
| 20 | { |
| 21 | namespace range |
| 22 | { |
| 23 | |
| 24 | template< class ForwardRange, class Value > |
| 25 | inline ForwardRange& iota( ForwardRange& rng, Value x ) |
| 26 | { |
| 27 | BOOST_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); |
| 28 | typedef BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type iterator_t; |
| 29 | |
| 30 | iterator_t last_target = ::boost::end(rng); |
| 31 | for (iterator_t target = ::boost::begin(rng); target != last_target; ++target, ++x) |
| 32 | *target = x; |
| 33 | |
| 34 | return rng; |
| 35 | } |
| 36 | |
| 37 | template< class ForwardRange, class Value > |
| 38 | inline const ForwardRange& iota( const ForwardRange& rng, Value x ) |
| 39 | { |
| 40 | BOOST_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); |
| 41 | typedef BOOST_DEDUCED_TYPENAME range_iterator<const ForwardRange>::type iterator_t; |
| 42 | |
| 43 | iterator_t last_target = ::boost::end(rng); |
| 44 | for (iterator_t target = ::boost::begin(rng); target != last_target; ++target, ++x) |
| 45 | *target = x; |
| 46 | |
| 47 | return rng; |
| 48 | } |
| 49 | |
| 50 | } // namespace range |
| 51 | using range::iota; |
| 52 | } // namespace boost |
| 53 | |
| 54 | #endif // include guard |
| 55 |