boost/algorithm/cxx11/none_of.hpp
/*
Copyright (c) Marshall Clow 2008-2012.
Distributed under 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)
*/
/// \file none_of.hpp
/// \brief Test ranges to see if no elements match a value or predicate.
/// \author Marshall Clow
#ifndef BOOST_ALGORITHM_NONE_OF_HPP
#define BOOST_ALGORITHM_NONE_OF_HPP
#include <boost/range/begin.hpp>
#include <boost/range/end.hpp>
namespace boost { namespace algorithm {
/// \fn none_of ( InputIterator first, InputIterator last, Predicate p )
/// \return true if none of the elements in [first, last) satisfy the predicate 'p'
/// \note returns true on an empty range
///
/// \param first The start of the input sequence
/// \param last One past the end of the input sequence
/// \param p A predicate for testing the elements of the sequence
///
template<typename InputIterator, typename Predicate>
BOOST_CXX14_CONSTEXPR bool none_of ( InputIterator first, InputIterator last, Predicate p )
{
for ( ; first != last; ++first )
if ( p(*first))
return false;
return true;
}
/// \fn none_of ( const Range &r, Predicate p )
/// \return true if none of the elements in the range satisfy the predicate 'p'
/// \note returns true on an empty range
///
/// \param r The input range
/// \param p A predicate for testing the elements of the range
///
template<typename Range, typename Predicate>
BOOST_CXX14_CONSTEXPR bool none_of ( const Range &r, Predicate p )
{
return boost::algorithm::none_of (boost::begin (r), boost::end (r), p );
}
/// \fn none_of_equal ( InputIterator first, InputIterator last, const V &val )
/// \return true if none of the elements in [first, last) are equal to 'val'
/// \note returns true on an empty range
///
/// \param first The start of the input sequence
/// \param last One past the end of the input sequence
/// \param val A value to compare against
///
template<typename InputIterator, typename V>
BOOST_CXX14_CONSTEXPR bool none_of_equal ( InputIterator first, InputIterator last, const V &val )
{
for ( ; first != last; ++first )
if ( val == *first )
return false;
return true;
}
/// \fn none_of_equal ( const Range &r, const V &val )
/// \return true if none of the elements in the range are equal to 'val'
/// \note returns true on an empty range
///
/// \param r The input range
/// \param val A value to compare against
///
template<typename Range, typename V>
BOOST_CXX14_CONSTEXPR bool none_of_equal ( const Range &r, const V & val )
{
return boost::algorithm::none_of_equal (boost::begin (r), boost::end (r), val);
}
}} // namespace boost and algorithm
#endif // BOOST_ALGORITHM_NONE_OF_HPP