a regular expression is simply a string of characters that defines a pattern used to search for a matching string. Many languages, including Perl, PHP, Python, JavaScript, and JScript, now support ...

A full-blown programming language like Java or Python can do many things, but regex does one thing only: match text against patterns. An individual regular expression is expressed as a string of ...

You can use a special group of functions and CALL routines to match or change data according to a specific pattern that you specify. By using these functions and CALL routines, you can determine ...

a regular expression, which is displayed in large, easily readable type. As you type your expression, Patterns dynamically highlights matching text in the Search Text pane. Patterns’s find-and ...

Tools like grep use regular expressions to create search patterns. I might write [Hh]ack ?a ?[Dd]ay as a regular expression to match things like “HackaDay” and “Hack a day” and ...

A regular expression typically includes a combination of text that will match exactly ... such as JavaScript, allow the inclusion of ‘flags’ after the regex pattern itself, and these can ...

This group consists of CALL RXCHANGE, CALL RXFREE, CALL RXSUBSTR, RXMATCH, and RXPARSE, and comprises the character string matching category for functions and CALL routines. For a description, see ...