Chris@16
|
1 /*
|
Chris@16
|
2 Copyright (c) Marshall Clow 2008-2012.
|
Chris@16
|
3
|
Chris@16
|
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
|
Chris@16
|
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
Chris@16
|
6
|
Chris@16
|
7 For more information, see http://www.boost.org
|
Chris@16
|
8 */
|
Chris@16
|
9
|
Chris@16
|
10 /// \file
|
Chris@16
|
11 /// \brief Test ranges to see if any elements match a value or predicate.
|
Chris@16
|
12 /// \author Marshall Clow
|
Chris@16
|
13
|
Chris@16
|
14 #ifndef BOOST_ALGORITHM_ANY_OF_HPP
|
Chris@16
|
15 #define BOOST_ALGORITHM_ANY_OF_HPP
|
Chris@16
|
16
|
Chris@16
|
17 #include <algorithm> // for std::any_of, if available
|
Chris@16
|
18 #include <boost/range/begin.hpp>
|
Chris@16
|
19 #include <boost/range/end.hpp>
|
Chris@16
|
20
|
Chris@16
|
21 namespace boost { namespace algorithm {
|
Chris@16
|
22
|
Chris@16
|
23 /// \fn any_of ( InputIterator first, InputIterator last, Predicate p )
|
Chris@16
|
24 /// \return true if any of the elements in [first, last) satisfy the predicate
|
Chris@16
|
25 /// \note returns false on an empty range
|
Chris@16
|
26 ///
|
Chris@16
|
27 /// \param first The start of the input sequence
|
Chris@16
|
28 /// \param last One past the end of the input sequence
|
Chris@16
|
29 /// \param p A predicate for testing the elements of the sequence
|
Chris@16
|
30 ///
|
Chris@16
|
31 template<typename InputIterator, typename Predicate>
|
Chris@16
|
32 bool any_of ( InputIterator first, InputIterator last, Predicate p )
|
Chris@16
|
33 {
|
Chris@16
|
34 for ( ; first != last; ++first )
|
Chris@16
|
35 if ( p(*first))
|
Chris@16
|
36 return true;
|
Chris@16
|
37 return false;
|
Chris@16
|
38 }
|
Chris@16
|
39
|
Chris@16
|
40 /// \fn any_of ( const Range &r, Predicate p )
|
Chris@16
|
41 /// \return true if any elements in the range satisfy the predicate 'p'
|
Chris@16
|
42 /// \note returns false on an empty range
|
Chris@16
|
43 ///
|
Chris@16
|
44 /// \param r The input range
|
Chris@16
|
45 /// \param p A predicate for testing the elements of the range
|
Chris@16
|
46 ///
|
Chris@16
|
47 template<typename Range, typename Predicate>
|
Chris@16
|
48 bool any_of ( const Range &r, Predicate p )
|
Chris@16
|
49 {
|
Chris@16
|
50 return boost::algorithm::any_of (boost::begin (r), boost::end (r), p);
|
Chris@16
|
51 }
|
Chris@16
|
52
|
Chris@16
|
53 /// \fn any_of_equal ( InputIterator first, InputIterator last, const V &val )
|
Chris@16
|
54 /// \return true if any of the elements in [first, last) are equal to 'val'
|
Chris@16
|
55 /// \note returns false on an empty range
|
Chris@16
|
56 ///
|
Chris@16
|
57 /// \param first The start of the input sequence
|
Chris@16
|
58 /// \param last One past the end of the input sequence
|
Chris@16
|
59 /// \param val A value to compare against
|
Chris@16
|
60 ///
|
Chris@16
|
61 template<typename InputIterator, typename V>
|
Chris@16
|
62 bool any_of_equal ( InputIterator first, InputIterator last, const V &val )
|
Chris@16
|
63 {
|
Chris@16
|
64 for ( ; first != last; ++first )
|
Chris@16
|
65 if ( val == *first )
|
Chris@16
|
66 return true;
|
Chris@16
|
67 return false;
|
Chris@16
|
68 }
|
Chris@16
|
69
|
Chris@16
|
70 /// \fn any_of_equal ( const Range &r, const V &val )
|
Chris@16
|
71 /// \return true if any of the elements in the range are equal to 'val'
|
Chris@16
|
72 /// \note returns false on an empty range
|
Chris@16
|
73 ///
|
Chris@16
|
74 /// \param r The input range
|
Chris@16
|
75 /// \param val A value to compare against
|
Chris@16
|
76 ///
|
Chris@16
|
77 template<typename Range, typename V>
|
Chris@16
|
78 bool any_of_equal ( const Range &r, const V &val )
|
Chris@16
|
79 {
|
Chris@16
|
80 return boost::algorithm::any_of_equal (boost::begin (r), boost::end (r), val);
|
Chris@16
|
81 }
|
Chris@16
|
82
|
Chris@16
|
83 }} // namespace boost and algorithm
|
Chris@16
|
84
|
Chris@16
|
85 #endif // BOOST_ALGORITHM_ANY_OF_HPP
|