When working with text or CSV data in Python, you may find yourself wanting to "extract only email addresses," "verify the ...

Some say a set of regular expressions comprises a domain-specific language, or DSL; essentially, a mini-programming language. A full-blown programming language like Java or Python can do many things, ...

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 they ...

How do you find out if a user has entered a valid email address? Do you check for an at-sign, or is it more complicated? For many developers the answer is a regular expression, a little bit of code ...

Take control of your data and filter out what doesn't help you to improve your search strategy. Learn how with this guide to regex for SEO. Perhaps you’ve heard of regex but aren’t quite sure how it ...

This article explains what regex (or regular expressions) is and how to get started using it with web crawlers, plus some interesting real-world use cases. One technology skill that is too-often ...

There are two types of people in the world: those who have no idea what a regular expression is, and those who not only know what they are but can compose them on the fly and tend to use them in ...

Imagine you are looking for a name in a telephone directory, but you can't remember its exact spelling. You can spend ages searching through all the possible combinations, unless you have a tool that ...

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: ...