10 Best Articles on Regex
The most useful articles on regex from around the web—beginners to advanced—curated by thought leaders and our community. We focus on timeless pieces and update the list whenever we discover new, must-read articles or videos—make sure to bookmark and revisit this page.
Top 5 Regex Articles
At a glance: these are the articles that have been most read, shared, and saved on regex by Refind users in 2023.
What is ...?
New to #regex? These articles make an excellent introduction.
(Don't Fear) The Regex: A Practical Introduction to Regular Expressions
Learn the answer to the question, "What are regular expressions, and why should I care?"
Short Articles
Short on time? Check out these useful short articles on regex—all under 10 minutes.
The regex [,-.]
I stumbled on this regex recently: \d{2}[,-.]\d{2}. The intention is clear enough: match two sets of two digits separated by a comma, a dash, or a period. Of course, it shouldn’t work. Dashes in…
Making a digital clock in Google Sheets
Using Google Sheets regex, conditional formatting and now() function to create a working digital clock. A great way to learn what Sheets can achieve!
Regex For Noobs (like me!)
This blog post is an illustrated guide to regex and aims to provide agentle introduction for people who never have fiddled with regex, wantto, but are kind of intimidated by the whole thing.
The 100% correct way to validate email addresses
Congratulations. From this day forward, you will no longer squander your time trying to work out the perfect regex to validate email…
Regular Expressions for Regular Folk
This is an experimental “book” about regular expressions. It is largely visual and example-based, as opposed to most regex resources I found while I was learning. I also attempted to choose test cases…
Long Articles
These are some of the most-read long-form articles on regex.
Animating Regular Expressions With Python and Graphviz
Peering into the internals of a regex engine
The Greatest Regex Trick Ever
So you're doubtful at the mention of a "best regex trick"? Fine. I'll concede right away that deciding what constitutes the best technique in any field is a curly matter. When you start out with…
7 Useful Tricks for Python Regex You Should Know
Write powerful and readable regex with them
You Should Learn Regex
Regular expressions (regex): one of the most powerful, widely applicable, and sometimes intimidating techniques in software engineering.
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