String manipulation is always resource-intensive, but compiled regex in Python and Java can help keep performance issues at bay.

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.

How to use the regular expression functions provided by the ‘re’ library to match, search, and replace text in your Python programs.

Whether you are parsing logs or validating input, using regular expressions is a great way to accomplish both of these things. The problem is: regular expressions can be hard and that will only grow ...

Let's say we need a JavaScript function that will take a string of tagged text (that is, it contains Extensible Markup Language (XML) markup) and return only the tags (and not the text that the ...

Instead, we can use pattern matching, or something known as “regular expressions.” (By the way, UNIX geeks may refer to it as GREP, which stands for global/regular expression/print.) ...

Regular expressions come in handy for all varieties of text processing, but are often misunderstood--even by veteran developers. Here's a look at intermediate-level regular expressions and what ...

Peter's beginning a self-improvement course in using regular expressions, at least when doing searches in Visual Studio. As part of achieving that goal, he's decided that the Find Files option is his ...

This article demonstrates some useful ways to use regular expressions with PPC, by adding new dimensions to our typical Account/Campaign/AdGroup hierarchy of data. Another use for regular ...

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: ...