Regex

Regular expressions provide a declarative language to match patterns within strings. They are commonly used for string validation, parsing, and transformation. Since regular expressions are not fully standardized, all questions with this tag should also include a tag specifying the applicable programming language or tool.

10 practical examples of regex with grep - JournalDev

Using regex with grep allows for some complex search and return operations in Linux. In this tutorial, we'll learn how to use regular expressions with ....

Learn Regex (Regular Expressions) : A Beginner's Guide

Learn regex (regular expressions) in our beginner's guide, including how they work and how to use them in a range of common scenarios. You’ll be able to apply regex solutions in most scenarios that call for it in your web development work.

How to Count the Number of Matches for a Regex?

we'll take a look at how to use regular expressions to count the number of matches in some text.. We'll take a look at how to use regular expressions to count the number of matches in some text.

Split IP and port in JavaScript with regular expressions

Learn how to split a string with both an IP address and a port number in JavaScript using regular expressions. Most scripts out there don't handle ports.

RegEx Cheat Sheet - Python

RegEx Cheat Sheet - Python . Upgrade your searching method with RegEx!

Breaking Down a Complex RegEx

While learning multiple ways to create a Pig Latinizer, I struggled to understand how a complex regex (regular expression) works its magic inside a .split method.

Web Scraping Job Boards: How to apply for the best jobs first

We’ve all heard it: Looking for a job is a full-time job! So, if I will claim to bring efficiency to my future role, let me start with the…

Regular Expression Complete Guide

Regular Expression Complete Guide - Regular expressions or regex puts a lot of people off, just because of its look at first glance. But once you master this it will open a…

An Introduction to Regex In JavaScript

What’s Regex? In JavaScript, a regular expression is simply a type of object that is used to match character combinations in strings. Here are some basic regex rules and syntax to know: Regex Methods to find matching patterns, Syntax & Flags, Wildcard & Anchor,

How To Build A JavaScript Password Strength Meter With Regex

In this video I am going to build a password strength tester in JavaScript which heavily utilizes Regex to make checking password security much easier.

Regular Expressions (RegEx) Crash Course in 20 Minutes

Regular Expressions (RegEx) Crash Course - Regex are a tool for finding patterns within a string of text. Almost every programming language implements regular expressions. What is Regex? Regular expressions can be difficult to learn because it literally looks like gibberish to beginners. The syntax is also not very intuitive. But if you take the time to understand and learn it, not only feel like you are decoding a German cipher, but you'll also see how powerful regular expressions can be.

JavaScript Best Practices — ES6 Features and Regex

Clearer ways to call methods on regex and returning things in arrow functions can be tricky.

Regex in Python — A-Z

A RegEx, or Regular Expression, is a sequence of characters that forms a search pattern with a formal syntax. This tutorial is quite unique because it not only explains the regex in theory but also describes in detail how the regex methods/attributes actually go about its work in Python

How to Use Regular Expressions (RegEx) in 100 Seconds

Learn how to use Regular Expressions, or RegEx, in 100 Seconds.

Tutorial: Python Regex (Regular Expressions) for Data Scientists

In this Python regex tutorial, learn how to use regular expressions and the pandas library to manage large data sets during data analysis.

How to Validate Different Formats of Phone Numbers using Java Regex

Learn how to validate different formats of phone numbers using regular expressions. Validate Phone Numbers With Java Regex

Regular Expressions: Regexes in Python (Part 1)

In this Python Regular Expressions (RegEx) tutorial, you’ll explore regular expressions, also known as regexes, in Python. A regex is a special sequence of characters that defines a pattern for complex string-matching functionality.

How To Build a Password Strength Meter With JavaScript and Regex

In this JavaScript tutorial, you'll learn how to build a password strength tester in JavaScript which heavily utilizes Regex to make checking password security much easier. I am going to show you a bunch of really cool Regex tricks and clean coding tips which will make working with Regex in JavaScript much easier.

The Ultimate Guide to Regex (Regular Expressions) in Python

In this Python tutorial, we’ll learning about Regex (Regular Expressions) in Python. Learn how Python regex works, and be able to use the basic patterns and functions in Python’s regex module, re, for to analyze text strings.