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66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/*
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Copyright (c) Marshall Clow 2008-2012.
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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/// \file iota.hpp
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/// \brief Generate an increasing series
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/// \author Marshall Clow
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#ifndef BOOST_ALGORITHM_IOTA_HPP
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#define BOOST_ALGORITHM_IOTA_HPP
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#include <boost/range/begin.hpp>
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#include <boost/range/end.hpp>
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namespace boost { namespace algorithm {
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/// \fn iota ( ForwardIterator first, ForwardIterator last, T value )
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/// \brief Generates an increasing sequence of values, and stores them in [first, last)
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///
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/// \param first The start of the input sequence
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/// \param last One past the end of the input sequence
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/// \param value The initial value of the sequence to be generated
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/// \note This function is part of the C++2011 standard library.
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template <typename ForwardIterator, typename T>
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void iota ( ForwardIterator first, ForwardIterator last, T value )
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{
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for ( ; first != last; ++first, ++value )
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*first = value;
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}
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/// \fn iota ( Range &r, T value )
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/// \brief Generates an increasing sequence of values, and stores them in the input Range.
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///
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/// \param r The input range
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/// \param value The initial value of the sequence to be generated
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///
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template <typename Range, typename T>
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void iota ( Range &r, T value )
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{
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boost::algorithm::iota (boost::begin(r), boost::end(r), value);
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}
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/// \fn iota_n ( OutputIterator out, T value, std::size_t n )
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/// \brief Generates an increasing sequence of values, and stores them in the input Range.
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///
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/// \param out An output iterator to write the results into
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/// \param value The initial value of the sequence to be generated
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/// \param n The number of items to write
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///
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template <typename OutputIterator, typename T>
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OutputIterator iota_n ( OutputIterator out, T value, std::size_t n )
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{
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for ( ; n > 0; --n, ++value )
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*out++ = value;
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return out;
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}
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}}
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#endif // BOOST_ALGORITHM_IOTA_HPP
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