Таблицы POSIX совместимых символьных классов
Вечно забываю как пишется тот или иной класс, а нагуглить с первого раза не всегда получается:(
Взято с wikibooks
| POSIX class | similar to | meaning |
|---|---|---|
| [:upper:] | [A-Z] | uppercase letters |
| [:lower:] | [a-z] | lowercase letters |
| [:alpha:] | [[:upper:][:lower:]] | upper- and lowercase letters |
| [:alnum:] | [[:alpha:][:digit:]] | digits, upper- and lowercase letters |
| [:digit:] | [0-9] | digits |
| [:xdigit:] | [0-9A-Fa-f] | hexadecimal digits |
| [:punct:] | [.,!?:…] | punctuation |
| [:blank:] | [ \t] | space and TAB characters only |
| [:space:] | [ \t\n\r\f\v] | blank (whitespace) characters |
| [:cntrl:] | control characters | |
| [:graph:] | [^ \t\n\r\f\v] | printed characters |
| [:print:] | [^\t\n\r\f\v]</> | printed characters and space |
Опубликовано
08.12.2018