string_view = basic_string_view!(char, char_traits!char).basic_string_view;u16string_view = basic_string_view!(wchar, char_traits!wchar).basic_string_view;u32string_view = basic_string_view!(dchar, char_traits!dchar).basic_string_view;wstring_view = basic_string_view!(dchar, char_traits!dchar).basic_string_view;char_traits(CharT);basic_string_view(T, Traits = char_traits!T);npos;size_type = size_t;difference_type = ptrdiff_t;value_type = T;pointer = T*;const_pointer = const(T)*;toString = as_array;str);length = size;opDollar = length;size() const;empty() const;data() const;as_array() const;at(size_typei) const;front() const;back() const;