12 #include <string_view> 13 #include <type_traits> 32 struct is_string<std::string_view> : std::true_type {};
A type trait that adds const to a given type if it is a pointer or a reference.
typename add_const< T >::type add_const_t
A type trait that checks if a given type is a string type.
constexpr bool is_string_v