11 // <variant>
13 // template <class ...Types> class variant;
15 // template <class T> constexpr variant(T&&) noexcept(see below);
20 #include <variant>
53     using V = std::variant<Dummy, NoThrowT>;  in test_T_ctor_noexcept()
57     using V = std::variant<Dummy, ThrowsT>;  in test_T_ctor_noexcept()
64     using V = std::variant<long, long long>;  in test_T_ctor_sfinae()
68     using V = std::variant<std::string, std::string>;  in test_T_ctor_sfinae()
72     using V = std::variant<std::string, void*>;  in test_T_ctor_sfinae()
76     using V = std::variant<std::string, float>;  in test_T_ctor_sfinae()
80     using V = std::variant<std::unique_ptr<int>, bool>;  in test_T_ctor_sfinae()
93     using V = std::variant<X>;  in test_T_ctor_sfinae()
97     using V = std::variant<AnyConstructible, NoConstructible>;  in test_T_ctor_sfinae()
105     constexpr std::variant<int> v(42);  in test_T_ctor_basic()
110     constexpr std::variant<int, long> v(42l);  in test_T_ctor_basic()
115     constexpr std::variant<unsigned, long> v(42);  in test_T_ctor_basic()
120     std::variant<std::string, bool const> v = "foo";  in test_T_ctor_basic()
125     std::variant<bool, std::unique_ptr<int>> v = nullptr;  in test_T_ctor_basic()
130     std::variant<bool const, int> v = true;  in test_T_ctor_basic()
135     std::variant<RValueConvertibleFrom<int>> v1 = 42;  in test_T_ctor_basic()
139     std::variant<RValueConvertibleFrom<int>, AnyConstructible> v2 = x;  in test_T_ctor_basic()
152   using V = std::variant<int, BoomOnAnything>;  in test_no_narrowing_check_for_class_types()
161   using V = std::variant<int, Bar, Baz, int, Baz, int, int>;  in test_construction_with_repeated_types()
171   std::variant<bool, int> v = vec[0];  in test_vector_bool()