54 lines
1.7 KiB
Plaintext
54 lines
1.7 KiB
Plaintext
|
// Copyright Neil Groves 2009. Use, modification and
|
||
|
|
// distribution is subject to 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)
|
||
|
|
//
|
||
|
|
//
|
||
|
|
// For more information, see http://www.boost.org/libs/range/
|
||
|
|
//
|
||
|
|
#ifndef BOOST_RANGE_ALGORITHM_FILL_N_HPP_INCLUDED
|
||
|
|
#define BOOST_RANGE_ALGORITHM_FILL_N_HPP_INCLUDED
|
||
|
|
|
||
|
|
#include <boost/assert.hpp>
|
||
|
|
#include <boost/concept_check.hpp>
|
||
|
|
#include <boost/range/begin.hpp>
|
||
|
|
#include <boost/range/end.hpp>
|
||
|
|
#include <boost/range/concepts.hpp>
|
||
|
|
#include <algorithm>
|
||
|
|
|
||
|
|
namespace boost
|
||
|
|
{
|
||
|
|
namespace range
|
||
|
|
{
|
||
|
|
|
||
|
|
/// \brief template function fill_n
|
||
|
|
///
|
||
|
|
/// range-based version of the fill_n std algorithm
|
||
|
|
///
|
||
|
|
/// \pre ForwardRange is a model of the ForwardRangeConcept
|
||
|
|
/// \pre n <= std::distance(boost::begin(rng), boost::end(rng))
|
||
|
|
template< class ForwardRange, class Size, class Value >
|
||
|
|
inline ForwardRange& fill_n(ForwardRange& rng, Size n, const Value& val)
|
||
|
|
{
|
||
|
|
BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
|
||
|
|
BOOST_ASSERT( static_cast<Size>(std::distance(boost::begin(rng), boost::end(rng))) >= n );
|
||
|
|
std::fill_n(boost::begin(rng), n, val);
|
||
|
|
return rng;
|
||
|
|
}
|
||
|
|
|
||
|
|
/// \overload
|
||
|
|
template< class ForwardRange, class Size, class Value >
|
||
|
|
inline const ForwardRange& fill_n(const ForwardRange& rng, Size n, const Value& val)
|
||
|
|
{
|
||
|
|
BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
|
||
|
|
BOOST_ASSERT( static_cast<Size>(std::distance(boost::begin(rng), boost::end(rng))) >= n );
|
||
|
|
std::fill_n(boost::begin(rng), n, val);
|
||
|
|
return rng;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace range
|
||
|
|
using range::fill_n;
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
#endif // include guard
|