How to use the regular expression functions provided by the ‘re’ library to match, search, and replace text in your Python programs. Regular expressions, or “regex,” is a system for finding complex ...

A quick run down on how you can use regular expressions in your own programs to give you more power over searching and substituting text. Perl has long been an extremely popular choice for text ...

The String.split methods can be very convenient for easily splitting a provided String based on a provided regular expression String. The only trick is figuring out a regular expression token to use ...

Regular expressions give Tim Patrick the creeps, but he overcame his fears by discovering specially crafted regex patterns can access data in a way that’s actually kind of cool. I've always been ...

These are the formal rules for forming basic UNIX regular expressions. For some simple examples, skip to Simple Examples. The rules come from the Solaris 7 regexp(5) manual page. The I2A2 reflector ...

Granted, that single line RegEx looks like a random garble of characters at first glance. In reality, it is a carefully constructed set of rules to dictate a pattern match on a string. As a primer, ...

I have to admit that I've never really understood regular expressions. But if there was any reason that I was going to learn to use them, it would be when doing searches in Visual Studio. For one ...

When working with regular expressions in a shell script the norm is to use grep or sed or some other external command/program. Since version 3 of bash (released in 2004) there is another option: ...

When using the MPF you can use regular expressions to add functionality. You see this in application policies that let you filter file names and such. I came up with the idea for this post after I ...

basically it needs to be a consistent 8 character date string with leading zeros for single digit values. I'm sure I can figure this out, but I'd like to do it with the least amount of code possible.