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1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <algorithm>
11 
12 // template<ForwardIterator Iter, Predicate<auto, Iter::value_type> Pred>
13 //   requires OutputIterator<Iter, RvalueOf<Iter::reference>::type>
14 //         && CopyConstructible<Pred>
15 //   Iter
16 //   remove_if(Iter first, Iter last, Pred pred);
17 
18 #include <algorithm>
19 #include <functional>
20 #include <cassert>
21 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
22 #include <memory>
23 #endif
24 
25 #include "test_iterators.h"
26 
27 template <class Iter>
28 void
test()29 test()
30 {
31     int ia[] = {0, 1, 2, 3, 4, 2, 3, 4, 2};
32     const unsigned sa = sizeof(ia)/sizeof(ia[0]);
33     int* r = std::remove_if(ia, ia+sa, std::bind2nd(std::equal_to<int>(), 2));
34     assert(r == ia + sa-3);
35     assert(ia[0] == 0);
36     assert(ia[1] == 1);
37     assert(ia[2] == 3);
38     assert(ia[3] == 4);
39     assert(ia[4] == 3);
40     assert(ia[5] == 4);
41 }
42 
43 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
44 
45 struct pred
46 {
operator ()pred47     bool operator()(const std::unique_ptr<int>& i) {return *i == 2;}
48 };
49 
50 template <class Iter>
51 void
test1()52 test1()
53 {
54     const unsigned sa = 9;
55     std::unique_ptr<int> ia[sa];
56     ia[0].reset(new int(0));
57     ia[1].reset(new int(1));
58     ia[2].reset(new int(2));
59     ia[3].reset(new int(3));
60     ia[4].reset(new int(4));
61     ia[5].reset(new int(2));
62     ia[6].reset(new int(3));
63     ia[7].reset(new int(4));
64     ia[8].reset(new int(2));
65     Iter r = std::remove_if(Iter(ia), Iter(ia+sa), pred());
66     assert(base(r) == ia + sa-3);
67     assert(*ia[0] == 0);
68     assert(*ia[1] == 1);
69     assert(*ia[2] == 3);
70     assert(*ia[3] == 4);
71     assert(*ia[4] == 3);
72     assert(*ia[5] == 4);
73 }
74 
75 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
76 
main()77 int main()
78 {
79     test<forward_iterator<int*> >();
80     test<bidirectional_iterator<int*> >();
81     test<random_access_iterator<int*> >();
82     test<int*>();
83 
84 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
85 
86     test1<forward_iterator<std::unique_ptr<int>*> >();
87     test1<bidirectional_iterator<std::unique_ptr<int>*> >();
88     test1<random_access_iterator<std::unique_ptr<int>*> >();
89     test1<std::unique_ptr<int>*>();
90 
91 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
92 }
93