forked from boostorg/algorithm
87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
/*
|
|
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 all_of.hpp
|
|
/// \brief Test ranges to see if all elements match a value or predicate.
|
|
/// \author Marshall Clow
|
|
|
|
#ifndef BOOST_ALGORITHM_ALL_OF_HPP
|
|
#define BOOST_ALGORITHM_ALL_OF_HPP
|
|
|
|
#include <algorithm> // for std::all_of, if available
|
|
#include <boost/range/begin.hpp>
|
|
#include <boost/range/end.hpp>
|
|
|
|
namespace boost { namespace algorithm {
|
|
|
|
/// \fn all_of ( InputIterator first, InputIterator last, Predicate p )
|
|
/// \return true if all 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
|
|
///
|
|
/// \note This function is part of the C++2011 standard library.
|
|
/// We will use the standard one if it is available,
|
|
/// otherwise we have our own implementation.
|
|
template<typename InputIterator, typename Predicate>
|
|
BOOST_CXX14_CONSTEXPR bool all_of ( InputIterator first, InputIterator last, Predicate p )
|
|
{
|
|
for ( ; first != last; ++first )
|
|
if ( !p(*first))
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
/// \fn all_of ( const Range &r, Predicate p )
|
|
/// \return true if all 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 all_of ( const Range &r, Predicate p )
|
|
{
|
|
return boost::algorithm::all_of ( boost::begin (r), boost::end (r), p );
|
|
}
|
|
|
|
/// \fn all_of_equal ( InputIterator first, InputIterator last, const T &val )
|
|
/// \return true if all 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 T>
|
|
BOOST_CXX14_CONSTEXPR bool all_of_equal ( InputIterator first, InputIterator last, const T &val )
|
|
{
|
|
for ( ; first != last; ++first )
|
|
if ( val != *first )
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
/// \fn all_of_equal ( const Range &r, const T &val )
|
|
/// \return true if all 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 T>
|
|
BOOST_CXX14_CONSTEXPR bool all_of_equal ( const Range &r, const T &val )
|
|
{
|
|
return boost::algorithm::all_of_equal ( boost::begin (r), boost::end (r), val );
|
|
}
|
|
|
|
}} // namespace boost and algorithm
|
|
|
|
#endif // BOOST_ALGORITHM_ALL_OF_HPP
|