| /* |
| 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) |
| |
| For more information, see http://www.boost.org |
| */ |
| |
| /// \file |
| /// \brief Test ranges to see if any elements match a value or predicate. |
| /// \author Marshall Clow |
| |
| #ifndef BOOST_ALGORITHM_ANY_OF_HPP |
| #define BOOST_ALGORITHM_ANY_OF_HPP |
| |
| #include <algorithm> // for std::any_of, if available |
| #include <boost/range/begin.hpp> |
| #include <boost/range/end.hpp> |
| |
| namespace boost { namespace algorithm { |
| |
| /// \fn any_of ( InputIterator first, InputIterator last, Predicate p ) |
| /// \return true if any of the elements in [first, last) satisfy the predicate |
| /// \note returns false 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> |
| bool any_of ( InputIterator first, InputIterator last, Predicate p ) |
| { |
| for ( ; first != last; ++first ) |
| if ( p(*first)) |
| return true; |
| return false; |
| } |
| |
| /// \fn any_of ( const Range &r, Predicate p ) |
| /// \return true if any elements in the range satisfy the predicate 'p' |
| /// \note returns false 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> |
| bool any_of ( const Range &r, Predicate p ) |
| { |
| return boost::algorithm::any_of (boost::begin (r), boost::end (r), p); |
| } |
| |
| /// \fn any_of_equal ( InputIterator first, InputIterator last, const V &val ) |
| /// \return true if any of the elements in [first, last) are equal to 'val' |
| /// \note returns false 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> |
| bool any_of_equal ( InputIterator first, InputIterator last, const V &val ) |
| { |
| for ( ; first != last; ++first ) |
| if ( val == *first ) |
| return true; |
| return false; |
| } |
| |
| /// \fn any_of_equal ( const Range &r, const V &val ) |
| /// \return true if any of the elements in the range are equal to 'val' |
| /// \note returns false on an empty range |
| /// |
| /// \param r The input range |
| /// \param val A value to compare against |
| /// |
| template<typename Range, typename V> |
| bool any_of_equal ( const Range &r, const V &val ) |
| { |
| return boost::algorithm::any_of_equal (boost::begin (r), boost::end (r), val); |
| } |
| |
| }} // namespace boost and algorithm |
| |
| #endif // BOOST_ALGORITHM_ANY_OF_HPP |