ЭЛЕКТРОННАЯ БИБЛИОТЕКА КОАПП |
Сборники Художественной, Технической, Справочной, Английской, Нормативной, Исторической, и др. литературы. |
7. Regular ExpressionsContents: 7.1 Concepts About Regular ExpressionsA Regular expressions are used by many programs, such as the UNIX commands, grep, sed, awk, ed, vi, emacs, and even the various shells. Each program has a different set of (mostly overlapping) template characters. Perl is a semantic superset of all of these tools: any regular expression that can be described in one of these tools can also be written in Perl, but not necessarily using exactly the same characters. |