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_REMOVE_IF_HPP_INCLUDED
10 #define BOOST_RANGE_ALGORITHM_REMOVE_IF_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
19 namespace boost
20 {
21 namespace range
22 {
23
24 /// \brief template function remove_if
25 ///
26 /// range-based version of the remove_if std algorithm
27 ///
28 /// \pre ForwardRange is a model of the ForwardRangeConcept
29 /// \pre UnaryPredicate is a model of the UnaryPredicateConcept
30 template< class ForwardRange, class UnaryPredicate >
31 inline BOOST_DEDUCED_TYPENAME boost::range_iterator<ForwardRange>::type
remove_if(ForwardRange & rng,UnaryPredicate pred)32 remove_if(ForwardRange& rng, UnaryPredicate pred)
33 {
34 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
35 return std::remove_if(boost::begin(rng), boost::end(rng), pred);
36 }
37
38 /// \overload
39 template< class ForwardRange, class UnaryPredicate >
40 inline BOOST_DEDUCED_TYPENAME boost::range_iterator<const ForwardRange>::type
remove_if(const ForwardRange & rng,UnaryPredicate pred)41 remove_if(const ForwardRange& rng, UnaryPredicate pred)
42 {
43 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
44 return std::remove_if(boost::begin(rng), boost::end(rng), pred);
45 }
46
47 // range_return overloads
48
49 /// \overload
50 template< range_return_value re, class ForwardRange, class UnaryPredicate >
51 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type
remove_if(ForwardRange & rng,UnaryPredicate pred)52 remove_if(ForwardRange& rng, UnaryPredicate pred)
53 {
54 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
55 return range_return<ForwardRange,re>::pack(
56 std::remove_if(boost::begin(rng), boost::end(rng), pred),
57 rng);
58 }
59
60 /// \overload
61 template< range_return_value re, class ForwardRange, class UnaryPredicate >
62 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type
remove_if(const ForwardRange & rng,UnaryPredicate pred)63 remove_if(const ForwardRange& rng, UnaryPredicate pred)
64 {
65 BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
66 return range_return<const ForwardRange,re>::pack(
67 std::remove_if(boost::begin(rng), boost::end(rng), pred),
68 rng);
69 }
70
71 } // namespace range
72 using range::remove_if;
73 } // namespace boost
74
75 #endif // include guard
76