algorithm/cxx11/find_if_not.hpp

0001 /*
0002    Copyright (c) Marshall Clow 2011-2012.
0003
0004    Distributed under the Boost Software License, Version 1.0. (See accompanying
0005    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0006 */
0007
0008 /// \file  find_if_not.hpp
0009 /// \brief Find the first element in a sequence that does not satisfy a predicate.
0010 /// \author Marshall Clow
0011
0012 #ifndef BOOST_ALGORITHM_FIND_IF_NOT_HPP
0013 #define BOOST_ALGORITHM_FIND_IF_NOT_HPP
0014
0015 #include <boost/config.hpp>
0016 #include <boost/range/begin.hpp>
0017 #include <boost/range/end.hpp>
0018
0019 namespace boost { namespace algorithm {
0020
0021 /// \fn find_if_not(InputIterator first, InputIterator last, Predicate p)
0022 /// \brief Finds the first element in the sequence that does not satisfy the predicate.
0023 /// \return         The iterator pointing to the desired element.
0024 ///
0025 /// \param first    The start of the input sequence
0026 /// \param last     One past the end of the input sequence
0027 /// \param p        A predicate for testing the elements of the range
0028 /// \note           This function is part of the C++2011 standard library.
0029 template<typename InputIterator, typename Predicate>
0030 BOOST_CXX14_CONSTEXPR InputIterator find_if_not ( InputIterator first, InputIterator last, Predicate p )
0031 {
0032     for ( ; first != last; ++first )
0033         if ( !p(*first))
0034             break;
0035     return first;
0036 }
0037
0038 /// \fn find_if_not ( const Range &r, Predicate p )
0039 /// \brief Finds the first element in the sequence that does not satisfy the predicate.
0040 /// \return         The iterator pointing to the desired element.
0041 ///
0042 /// \param r        The input range
0043 /// \param p        A predicate for testing the elements of the range
0044 ///
0045 template<typename Range, typename Predicate>
0046 BOOST_CXX14_CONSTEXPR typename boost::range_iterator<const Range>::type find_if_not ( const Range &r, Predicate p )
0047 {
0048     return boost::algorithm::find_if_not (boost::begin (r), boost::end(r), p);
0049 }
0050
0051 }}
0052 #endif  // BOOST_ALGORITHM_FIND_IF_NOT_HPP