1// Copyright Neil Groves 2009. Use, modification and
2// distribution is subject to the Boost Software License, Version
3// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
4// http://www.boost.org/LICENSE_1_0.txt)
5//
6//
7// For more information, see http://www.boost.org/libs/range/
8//
9#ifndef BOOST_RANGE_ALGORITHM_FIND_HPP_INCLUDED
10#define BOOST_RANGE_ALGORITHM_FIND_HPP_INCLUDED
11
12#include <boost/concept_check.hpp>
13#include <boost/range/begin.hpp>
14#include <boost/range/end.hpp>
15#include <boost/range/concepts.hpp>
16#include <boost/range/detail/range_return.hpp>
17#include <algorithm>
18
19namespace boost
20{
21 namespace range
22 {
23
24/// \brief template function find
25///
26/// range-based version of the find std algorithm
27///
28/// \pre SinglePassRange is a model of the SinglePassRangeConcept
29template< class SinglePassRange, class Value >
30inline BOOST_DEDUCED_TYPENAME disable_if<
31 is_const<SinglePassRange>,
32 BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange>::type
33>::type
34find( SinglePassRange& rng, const Value& val )
35{
36 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange> ));
37 return std::find(boost::begin(rng), boost::end(rng), val);
38}
39
40/// \overload
41template< class SinglePassRange, class Value >
42inline BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange>::type
43find( const SinglePassRange& rng, const Value& val )
44{
45 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange> ));
46 return std::find(boost::begin(rng), boost::end(rng), val);
47}
48
49// range_return overloads
50
51/// \overload
52template< range_return_value re, class SinglePassRange, class Value >
53inline BOOST_DEDUCED_TYPENAME disable_if<
54 is_const<SinglePassRange>,
55 BOOST_DEDUCED_TYPENAME range_return<SinglePassRange,re>::type
56>::type
57find( SinglePassRange& rng, const Value& val )
58{
59 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange> ));
60 return range_return<SinglePassRange,re>::
61 pack(std::find(boost::begin(rng), boost::end(rng), val),
62 rng);
63}
64
65/// \overload
66template< range_return_value re, class SinglePassRange, class Value >
67inline BOOST_DEDUCED_TYPENAME range_return<const SinglePassRange,re>::type
68find( const SinglePassRange& rng, const Value& val )
69{
70 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange> ));
71 return range_return<const SinglePassRange,re>::
72 pack(std::find(boost::begin(rng), boost::end(rng), val),
73 rng);
74}
75
76 } // namespace range
77 using range::find;
78}
79
80#endif // include guard
81

source code of boost/libs/range/include/boost/range/algorithm/find.hpp