13 #include <string_view>
19 template<
class... args_t>
20 using basic_string_view = std::basic_string_view<args_t...>;
22 using cstring_view = basic_string_view<char>;
23 using wstring_view = basic_string_view<wchar_t>;
24 using string_view = basic_string_view<char_type>;