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 ...

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 ...

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 ...

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 ...