42 class StringView {
52   StringView() = default;
55   StringView(std::nullptr_t) = delete;
58   StringView(const char* str) : data_(str) {  in StringView()  function
64   StringView(const char* str, size_t length) : data_(str), length_(length) {  in StringView()  function
69   StringView(const string& str) : data_(str.data()), length_(str.length()) {}  in StringView()  function
79   int compare(StringView rhs) const {  in compare()
90 inline bool operator==(StringView lhs, StringView rhs) {
94 inline bool operator!=(StringView lhs, StringView rhs) {
98 inline bool operator<(StringView lhs, StringView rhs) {
102 inline bool operator>(StringView lhs, StringView rhs) {
106 inline std::ostream& operator<<(std::ostream& os, StringView s) {