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Regular Expressions are how you match text and patterns of text in a programming language, and once you learn it, it’s useful in many languages. Regular Expression Cheat Sheet RegExr is an online tool to learn, build, & test Regular Expressions CROSSWORDS ...

This article is meant to be a companion to the regular expressions resources article. Instead of telling you how to do certain things, this article aims to answer, “why would I want to do that?”Character classesSyntax: [aeiou] or [0-9]Matches a single characte...