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RegExp

Regular expressions

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A RegEx (regular expression) is a text search pattern used to identify, extract, or replace specific patterns within strings of characters, widely used in programming and text processing for data validation and information filtering.

Articles
AlgorithmRegExpUI/UX

How does emoji search work on Slack?

Published on 05/08/2024

Slack implements "subsequence matching" for its emoji search. Let's discover how it works and how to...

RegExpJavaScript

The Hidden Secret of Regex in JavaScript That Drives You Crazy!

Published on 23/10/2023

Warning, once you’ve read this article, you won’t come out of it unscathed!

JavaScriptRegExpString

Using RegEx capture groups with replace() in JS

Published on 26/06/2023

The `replace()` method is natively designed to be used with regular expressions. Let's take a look a...

RegExpOptimization

How can I improve at writing RegExp?

Published on 18/03/2021

Creating a regular expression is the weak point of many developers, but how can you improve?