mdds
ref_pair.hpp
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28 
29 #ifndef INCLUDED_MDDS_REF_PAIR_HPP
30 #define INCLUDED_MDDS_REF_PAIR_HPP
31 
32 #include <type_traits>
33 
34 namespace mdds { namespace detail {
35 
36 template<typename T1, typename T2>
37 struct ref_pair
38 {
39  using first_type = typename std::add_lvalue_reference<T1>::type;
40  using second_type = typename std::add_lvalue_reference<T2>::type;
41 
42  first_type first;
43  second_type second;
44 
45  ref_pair(first_type _first, second_type _second) :
46  first(_first), second(_second) {}
47 
48  ref_pair(const ref_pair& other) = default;
49 
50  bool operator== (const std::pair<typename std::decay<T1>::type, typename std::decay<T2>::type>& other) const
51  {
52  return first == other.first && second == other.second;
53  }
54 
55  bool operator!= (const std::pair<typename std::decay<T1>::type, typename std::decay<T2>::type>& other) const
56  {
57  return !operator==(other);
58  }
59 
60  bool operator== (const ref_pair& other) const
61  {
62  return first == other.first && second == other.second;
63  }
64 
65  bool operator!= (const ref_pair& other) const
66  {
67  return !operator==(other);
68  }
69 
70  ref_pair* operator->()
71  {
72  return this;
73  }
74 };
75 
76 }}
77 
78 
79 #endif
80 
81 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
Definition: ref_pair.hpp:37
Definition: flat_segment_tree.hpp:46