Lines Matching full:hash

22 template <class Hash, class Key, class Res = decltype(std::declval<Hash&>()(std::declval<Key>()))>
30 template <class Hash, class Key>
32   return can_hash_impl<Hash, Key>(0);
49 // Test that the specified Hash meets the requirements of an enabled hash
50 template <class Key, class Hash = std::hash<Key>>
52   static_assert(std::is_destructible<Hash>::value, "");
54   // Enabled hash requirements
55   static_assert(std::is_default_constructible<Hash>::value, "");
56   static_assert(std::is_copy_constructible<Hash>::value, "");
57   static_assert(std::is_move_constructible<Hash>::value, "");
58   static_assert(std::is_copy_assignable<Hash>::value, "");
59   static_assert(std::is_move_assignable<Hash>::value, "");
62   static_assert(std::is_swappable<Hash>::value, "");
64   static_assert(std::__is_swappable_v<Hash>, "");
68   static_assert(can_hash<Hash, Key&>(), "");
69   static_assert(can_hash<Hash, Key const&>(), "");
70   static_assert(can_hash<Hash, Key&&>(), "");
71   static_assert(can_hash<Hash const, Key&>(), "");
72   static_assert(can_hash<Hash const, Key const&>(), "");
73   static_assert(can_hash<Hash const, Key&&>(), "");
75   static_assert(can_hash<Hash, ConvertibleToSimple<Key>&>(), "");
76   static_assert(can_hash<Hash, ConvertibleToSimple<Key> const&>(), "");
77   static_assert(can_hash<Hash, ConvertibleToSimple<Key>&&>(), "");
79   static_assert(can_hash<Hash, ConvertibleTo<Key>&>(), "");
80   static_assert(can_hash<Hash, ConvertibleTo<Key> const&>(), "");
81   static_assert(can_hash<Hash, ConvertibleTo<Key>&&>(), "");
82   static_assert(can_hash<Hash, ConvertibleTo<Key> const&&>(), "");
84   const Hash h{};
88 // Test that the specified Hash meets the requirements of a disabled hash.
89 template <class Key, class Hash = std::hash<Key>>
91   // Disabled hash requirements
92   static_assert(!std::is_default_constructible<Hash>::value, "");
93   static_assert(!std::is_copy_constructible<Hash>::value, "");
94   static_assert(!std::is_move_constructible<Hash>::value, "");
95   static_assert(!std::is_copy_assignable<Hash>::value, "");
96   static_assert(!std::is_move_assignable<Hash>::value, "");
99       !std::is_function<typename std::remove_pointer<typename std::remove_reference<Hash>::type>::type>::value, "");
102   static_assert(!can_hash<Hash, Key&>(), "");
103   static_assert(!can_hash<Hash, Key const&>(), "");
104   static_assert(!can_hash<Hash, Key&&>(), "");
105   static_assert(!can_hash<Hash const, Key&>(), "");
106   static_assert(!can_hash<Hash const, Key const&>(), "");
107   static_assert(!can_hash<Hash const, Key&&>(), "");
109   static_assert(!can_hash<Hash, ConvertibleToSimple<Key>&>(), "");
110   static_assert(!can_hash<Hash, ConvertibleToSimple<Key> const&>(), "");
111   static_assert(!can_hash<Hash, ConvertibleToSimple<Key>&&>(), "");
113   static_assert(!can_hash<Hash, ConvertibleTo<Key>&>(), "");
114   static_assert(!can_hash<Hash, ConvertibleTo<Key> const&>(), "");
115   static_assert(!can_hash<Hash, ConvertibleTo<Key>&&>(), "");
116   static_assert(!can_hash<Hash, ConvertibleTo<Key> const&&>(), "");
123 // Each header that declares the std::hash template provides enabled
124 // specializations of std::hash for std::nullptr_t and all cv-unqualified
141 // Test that each of the library hash specializations for arithmetic types,