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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// 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
19namespace boost
20{
21 namespace range
22 {
23
24template< class ForwardRange, class Value >
25inline 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
37template< class ForwardRange, class Value >
38inline 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