1 | // Copyright Neil Groves 2009. Use, modification and |
2 | // distribution is subject to the Boost Software License, Version |
3 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
4 | // http://www.boost.org/LICENSE_1_0.txt) |
5 | // |
6 | // |
7 | // For more information, see http://www.boost.org/libs/range/ |
8 | // |
9 | #ifndef BOOST_RANGE_ALGORITHM_FILL_N_HPP_INCLUDED |
10 | #define BOOST_RANGE_ALGORITHM_FILL_N_HPP_INCLUDED |
11 | |
12 | #include <boost/assert.hpp> |
13 | #include <boost/concept_check.hpp> |
14 | #include <boost/range/begin.hpp> |
15 | #include <boost/range/end.hpp> |
16 | #include <boost/range/concepts.hpp> |
17 | #include <algorithm> |
18 | |
19 | namespace boost |
20 | { |
21 | namespace range |
22 | { |
23 | |
24 | /// \brief template function fill_n |
25 | /// |
26 | /// range-based version of the fill_n std algorithm |
27 | /// |
28 | /// \pre ForwardRange is a model of the ForwardRangeConcept |
29 | /// \pre n <= std::distance(boost::begin(rng), boost::end(rng)) |
30 | template< class ForwardRange, class Size, class Value > |
31 | inline ForwardRange& fill_n(ForwardRange& rng, Size n, const Value& val) |
32 | { |
33 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); |
34 | BOOST_ASSERT( static_cast<Size>(std::distance(boost::begin(rng), boost::end(rng))) >= n ); |
35 | std::fill_n(boost::begin(rng), n, val); |
36 | return rng; |
37 | } |
38 | |
39 | /// \overload |
40 | template< class ForwardRange, class Size, class Value > |
41 | inline const ForwardRange& fill_n(const ForwardRange& rng, Size n, const Value& val) |
42 | { |
43 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); |
44 | BOOST_ASSERT( static_cast<Size>(std::distance(boost::begin(rng), boost::end(rng))) >= n ); |
45 | std::fill_n(boost::begin(rng), n, val); |
46 | return rng; |
47 | } |
48 | |
49 | } // namespace range |
50 | using range::fill_n; |
51 | } // namespace boost |
52 | |
53 | #endif // include guard |
54 | |