| 3246 | bool is_space() const noexcept { return !empty() && contains_only(whitespaces_set()); } |
| 3247 | bool is_upper() const noexcept { return !empty() && contains_only(ascii_uppercase_set()); } |
| 3248 | bool is_printable() const noexcept { return empty() || contains_only(ascii_printables_set()); } |
| 3249 | bool is_internal() const noexcept { return sz_string_is_on_stack(&string_); } |
| 3250 | |
| 3251 | #pragma region Character Set Arguments |