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Regular expression

A regular expression (shortened as regex or regexp), sometimes referred to as rational expression, is a sequence of characters that specifies a match pattern in text. Usually such patterns are used by string-searching algorithms for “find” or “find and replace” operations on strings, or for input validation.

Regular expression techniques are developed in theoretical computer science and formal language theory. They are used in search engines, in search and replace dialogs of word processors and text editors, in text processing utilities such as sed and AWK, and in lexical analysis. Regular expressions are also supported in many programming languages.

Different syntaxes for writing regular expressions have existed since the 1980s, one being the POSIX standard and another, widely used, being the Perl syntax.

https://github.com/s41r4j/simpex

[ 'simpex' -> "simple regex" ]: simplifies process of using regex for everyone

regex regex-engine regex-match regex-pattern regexp regexp-match regular-expression regular-expressions simplification simplified

Last synced: 08 Apr 2025

https://github.com/terieyenike/userform

Type checking user form with Regex

bootstrap4 css html javascript regex regular-expression

Last synced: 07 May 2026

https://github.com/codedwells/regular-expressions

This repo contains some regex learning material.

javascript regex regexp regular-expression

Last synced: 31 Mar 2025

https://github.com/loglux-lab/ip-extractor

ip-extractor.sh uses nano to extract IP addresses. Results are stored in 'hosts', with duplicates removed. Ideal for sifting through logs and data-rich files.

bash extract-data linux-shell nano regex regular-expression

Last synced: 25 Feb 2025

https://github.com/kkirby/regexp-escape

A super simple, zero dependency library to escape regular expressions.

nodejs regular-expression

Last synced: 12 Jan 2026

https://github.com/qu1etboy/regex-to-nfa

Group Assignment for 01418334(66-2) Compiler Techniques

frontend nextjs nfa regex-to-nfa regular-expression typescript

Last synced: 06 May 2026

https://github.com/twolodzko/rex

✂️ Use Regular Expressions to eXtract fields from a string

command-line command-line-tool regex regular-expression rust rust-lang

Last synced: 18 Jul 2025

https://github.com/University-Experience/Regex-AWK

Distributed Operation Systems Lab2

awk docker linux regex regular-expression ubuntu

Last synced: 17 Jul 2025

https://github.com/chriskonnertz/regex

Use methods to fluently create a regular expression in PHP

api expression fluent interface library oop php regex regex-string regular regular-expression

Last synced: 16 Mar 2025

https://github.com/smuecke/regextube

Firefox addon for filtering YouTube subscription feed using regular expressions

filter firefox-addon firefox-extension regex regular-expression youtube

Last synced: 18 May 2026

https://github.com/turbobasic/regexyouwillnotforget

Best practices for making complex regular expressions which you will understand half year later

best-practices powershell regex regular-expression

Last synced: 16 Mar 2025

https://github.com/mpolinowski/python-re

Python working with Regular Expressions

python regex-pattern regular-expression

Last synced: 17 Jun 2025

https://github.com/samarthhchinivar/python-basics

Python Basics learnt/excercised during RedTron Internship.

methods os python3 regular-expression

Last synced: 24 Feb 2025

https://github.com/ghostwriter/regex

Parse, analyze, and optimize regular expressions in PHP

ghostwriter regex regular-expression

Last synced: 18 Jul 2025

https://github.com/mohammadyounes/match-guard

Simplify pattern matching by guarding parts of the input string

regex regex-util regular-expression

Last synced: 18 May 2026

https://github.com/hygull/try-regex

A repository to work on regular expressions of different programming languages(basically Python, JavaScript, Golang etc.), trying different samples as per the need based on different requirements.

golang javascript python python3 regular-expression

Last synced: 09 May 2026

https://github.com/code4mk/lets-regex

Lets learn RegEx ( Regular Expression) with fun . 💗 code4mk

regex regular-expression

Last synced: 09 Mar 2026

https://github.com/radiopizza/android-software-development

This repository serves as a collection of laboratory assignments completed during the "Android Software Development" elective course

android android-studio kotlin oop regular-expression text-formatting

Last synced: 24 Mar 2025

https://github.com/stuarthicks/rextract

Simple shell regex capture extractor

cli go golang regex regular-expression regular-expressions

Last synced: 15 Jun 2026

https://github.com/jsumners/go-reggie

A wrapper on top of regexp.Regexp that provides utility methods for accessing named capture group results.

go golang regex regular-expression

Last synced: 30 Oct 2025

https://github.com/lexhouk/goit-algo-hw-03

Модуль 3. Робота з датою, часом та розширена робота з рядками

goit goit-algo-hw-03 python-datetime python-random python-regex regex regular-expression regular-expressions studying

Last synced: 11 May 2025

https://github.com/muhammadawaisshaikh/remove-spaces-regexr

remove spaces using Regular Expression

regex regular-expression typescript

Last synced: 18 May 2026

https://github.com/turbolent/regex

An implementation of Rob Pike's Virtual Machine-based regular expression engine

regex regexp regular-expression regular-expression-engine regular-expressions swift virtual-machine vm

Last synced: 28 Mar 2025

https://github.com/thgossler/replacepdfhyperlinks

A CLI tool for Windows and Linux to search and replace hyperlinks in PDF documents with regular expressions.

cli hyperlinks pdf regular-expression replace

Last synced: 25 Mar 2025

https://github.com/zhangshyue/webscrapper-for-imdb-and-data-visualization

A scrapy webscrapper that can scrape information about the IMDb top box office films and use pandas and matplotlib to visualize the data

json matplotlib mongodb pandas python3 regular-expression scrapy webscrapper

Last synced: 05 Apr 2026

https://github.com/equation-man/webscraping

Programmatically extracting content from the web via scraping.

beautifulsoup4 python3 regular-expression webscraping

Last synced: 09 Apr 2025

https://github.com/dubniczky/regex-collection

Collection of regular expressions for matching strings

python regex regular-expression

Last synced: 31 Mar 2025

https://github.com/bdusell/jitsu-wrap

Object-oriented wrappers for PHP strings, arrays, and regexes

array method-chaining oop php regex regular-expression string web-development

Last synced: 09 Apr 2025

https://github.com/ahmedelwerdany/deregex

Delete Lines from a file with regex

filesystem regex regexp regular-expression

Last synced: 11 Jun 2026

https://github.com/memgonzales/regex-tweet-tokenizer

General-purpose regex-based tweet tokenizer that employs pattern matching with a single regular expression

natural-language-processing natural-language-understanding nlp regex regular-expression tokenization tokenizer tweet-preprocessing tweets

Last synced: 05 Jul 2025

https://github.com/radiopizza/tpu-labs-android-development

This repository serves as a collection of laboratory assignments completed during the "Android Software Development" elective course

android android-studio constraintlayout coroutines dialogs fragments-layout gridlayout intents kotlin listener livedata navigation oop recyclerview regular-expression resources seekbar unit-testing viewmodel xml

Last synced: 17 May 2026

https://github.com/juan-medina/regexp-dsl

expressive regular expressions with a domain specific language written in Kotlin

domain-specific-language dsl kotlin regex regex-pattern regexes regexp regexpr regular-expression regular-expressions

Last synced: 11 Jun 2026

https://github.com/nicktheodoro/area-code

Validate and categorize phone numbers by area code. Given valid area codes and a list of numbers, output the count of valid numbers per area code, adhering to specified validation rules.

go golang regular-expression unit-testing validation

Last synced: 15 Jul 2025

https://github.com/rustkas/introducing-regular-expressions-by-erlang

The examples implemented here are inspired by the book's source code - https://learning.oreilly.com/library/view/introducing-regular-expressions/9781449338879/

erlang regular-expression

Last synced: 14 Jun 2025

https://github.com/seasawher/regular-expression-derivatives-re-examined

論文を機械翻訳しただけのリポジトリ

japanese machine-translation paper regular-expression

Last synced: 05 Feb 2026

https://github.com/apsrcreatix/regex

Learning Regular Expressions 🙂 [ALPHA]

regex regular-expression regular-expressions

Last synced: 22 Jun 2025

https://github.com/adnanrahin/nlp-with-disaster-tweets

Kaggle Competition: Predict which Tweets are about real disasters and which ones are not. Natural Language Processing.

data-analysis data-science data-visualization kaggle-competition machine-learning natural-language-processing regular-expression tweets

Last synced: 21 Jun 2025

https://github.com/davidfstr/renameregex

Renames files in bulk using regular expressions.

regular-expression regular-expressions rename rename-files renamer renames

Last synced: 16 May 2026

https://github.com/brenofariasdasilva/regular-expressions

My Most Commonly used Regular Expressions.

regex regular-expression

Last synced: 03 Jan 2026

https://github.com/gening/seq_re

2-dimensional Sequence Regular Expression (SEQ RE)

2d-array matrix n-tuple n-vector regex regular-expression seq sequence token

Last synced: 07 Apr 2026

https://github.com/joiceo/manipulacao-de-textos-usando-o-r

Exercícios do curso "Introdução à Manipulação de Textos Usando o R", da UFJF, feito entre 24/05 e 02/06/2021

r regex regular-expression

Last synced: 12 Jun 2026

https://github.com/szirocica/world-database-cli-crud

Cli CRUD application in perl

cli mysql perl perl5 regular-expression

Last synced: 07 Apr 2026

https://github.com/harishkataria/patterns

Simplifying pattern building in Swift

pattern-matching regular-expression search swift

Last synced: 11 Oct 2025

https://github.com/davidje13/revexp

Given a regular expression, solves for possible matching input strings

regular-expression

Last synced: 17 May 2026

https://github.com/edwinm/typed-re

Template literal types for regular expression capturing groups

capturing-groups regular-expression template-literal-types

Last synced: 22 Jan 2026

https://github.com/mikeludemann/regular-expressions-helper

Simple regular expressions for many rules on websites and more

regular-expression regular-expressions

Last synced: 17 Feb 2026

https://github.com/raghavendranhp/cardify_extracting_business_card_data_and_management

Cardify is a Streamlit application that simplifies the process of extracting and managing business card data. With Cardify, users can easily upload business card images, extract relevant information using OCR, and manage the extracted data efficiently.

easyocr ocr ocr-text-reader opencv python regular-expression sqlite3 streamlit

Last synced: 08 May 2026

https://github.com/gpalleschi/reponere

Reponere is a bash utility script to replace values in ascii files, the name is latin translation of english word "replace".

bash command-line-tool lc regular-expression replace script utility

Last synced: 16 Apr 2026

https://github.com/hnx8/bregonigdotnet

make bregonig.dll "Onigmo" regular expression available from C#.

bregonig csharp onigmo regular-expression

Last synced: 19 Oct 2025

https://github.com/sukanyadutta52/emojis-_influence

The Influence of Fan Age, on Online Discourse; Examining the Facebook Comments, on Taylor Swifts Page

bag-of-words emoji langdetect pandas regular-expression

Last synced: 16 May 2026

https://github.com/tttardigrado/hsderiv

Haskell implementation of Brzozowski derivatives for regular expressions.

brzozowski-derivative functional-programming haskell regex regex-matcher regular-expression theory-of-computation

Last synced: 03 Apr 2025

https://github.com/urbanjost/m_regex

Fortran interface to the POSIX 1003.2 regular expression library

fortran fortran-package-manager fpm regular-expression

Last synced: 24 Jan 2026

https://github.com/carjizo/telegram-bot-gpt2

Telegram bot with gtp2

gpt-2 python regular-expression

Last synced: 17 Mar 2025

https://github.com/switchcat/range-regex

Utility package for generating a regular expression matching numeric ranges

php php74 regex regex-pattern regexp regular-expression regular-expressions switchcat-framework

Last synced: 25 Feb 2026

https://github.com/jhadida/nxp

Natural eXpression Parsing — A Python 3 parsing library.

library parser-generator parsing python3 regular-expression

Last synced: 26 Feb 2026

https://github.com/prakashjha1/whatsapp-chat-analyzer

WhatsApp Analyzer means we are analyzing our WhatsApp group activities. It tracks our conversation and analyses how much time we are spending or saying it as “wasting” on WhatsApp.

data-analysis data-science natural-language-processing pandas pyhton regular-expression

Last synced: 15 May 2026

https://github.com/rotemdan/regexp-composer

Easy-to-use regular expression builder, using a composable, function-oriented style. Supports all regular expression patterns accepted by the JavaScript RegExp engine.

regular-expression

Last synced: 02 Apr 2026

https://github.com/susji/mre

Toy regular expression library

regex regular-expression

Last synced: 02 Apr 2025

https://github.com/mahmoudaliaboelhassan/tasks-list

This project is a task list web application designed to help users keep track of their daily tasks. The project uses HTML, CSS, and JavaScript to create a visually appealing and interactive interface

alert css-flexbox css3 font-awesome google-fonts html5 js json local-storage media-queries object-oriented-programming regular-expression

Last synced: 16 Apr 2026

https://github.com/php-standard-library/regex

Type-safe regular expressions with typed capture groups and proper error handling

preg regex regular-expression

Last synced: 23 May 2026

https://github.com/tahmid-tanzim/regular-expression

Learning Regular Expressions by Kevin Skoglund

pattern-matching regex regex-pattern regular-expression

Last synced: 19 Jan 2026

https://github.com/mrheer/regularcopy

copy files by recursion

copy python regular-expression

Last synced: 19 Mar 2025

https://github.com/aburdulescu/cl

Color text lines using regular expressions

command-line-tool golang regular-expression

Last synced: 17 Apr 2026

https://github.com/sujilnt/directoryreportgenerator

Genarating a Report of overview of the files under a given directory. It prints filename , user and the size .

directory-analyzer linux-app perl perl-scripti perl-task regular-expression shell-scripting

Last synced: 18 Apr 2026

https://github.com/caioambro/desafiostringunica

Projeto do Desafio da String Única utilizando RegEx

desafio desafio-python expressao-regular python regex regular-expression

Last synced: 18 Apr 2026

https://github.com/gruhn/regex-utils

TypeScript library for regex intersection, complement and other utilities that go beyond string matching.

javascript regex regexp regular-expression regular-expressions typescript

Last synced: 19 Apr 2026

https://github.com/gpalleschi/csvutil

CSVutil.sh is a very simple but effective bash shell to manage csv files by command line and generate output on stdout or file.

bash bash-script csv csv-format csv-parsing csv-reader extract regular-expression shell-script tool utility

Last synced: 04 Jun 2026

https://github.com/gakurualex/seasons

CS50's Introduction to Programming with Python Problem Set 8. Calculate how old a person is in minutes.

cs50problemsets datetime inflect pytest python regular-expression timedelta

Last synced: 20 Apr 2026

https://github.com/boywithkeyboard-archive/js-imports

The most complete regular expressions for matching, parsing and validating JavaScript/TypeScript imports.

exports imports javascript regex regular-expression regular-expressions typescript

Last synced: 24 Apr 2026

https://github.com/jaid/match-array

Returns an array of all found named groups matched with given RegExp and string.

array library match node node-js regex regexp regular-expression regular-expressions string strings util utility

Last synced: 25 Apr 2026

https://github.com/gautamjuyal/base-apparel-coming-soon

Base apparel coming soon page from frontendmentor.io Form validated using JavaScript regular expression.

javascript mixins regular-expression scss

Last synced: 27 Apr 2026

https://github.com/moronixproduct3/grofit

Discord bot that checks if a text messages follows a format

bot discord grofit regex regular-expression

Last synced: 01 May 2026

https://github.com/plandes/recrepl

Recursively find and/or replace text with PERL regular expressions.

perl regular-expression text

Last synced: 03 May 2026

https://github.com/zeeshan2k2/daraz-web-scraper

A Python script to filter out the most rated products and display it alongside it's name, price and review count.

beautifulsoup4 pandas python regular-expression selenium selenium-webdriver

Last synced: 07 May 2026

https://github.com/0necontroller/regular-expressions

This repo contains some regex learning material.

javascript regex regexp regular-expression

Last synced: 28 Aug 2025

https://github.com/bdusell/jitsu-regex

A better API for PHP's regular expression functions

helper-functions php regex regular-expression

Last synced: 30 Aug 2025

https://github.com/roneetkumar/renamer

Build a tool used to rename files with a common pattern.

go golang regular-expression rename-files tool

Last synced: 15 Jun 2026

Regular expression Awesome Lists
Computer-Science-Resources 51 awesome-regex 153
Regular expression Categories
Content 64 Regex engines 51 JavaScript regex evolution 24 JavaScript regex libraries 22 Testers 21 Performance 17 Tutorials 11 Grep-like tools 7 Visualizers 6 About 5 Syntax-free regex builders 4 Articles 3 Books 3 Miscellaneous 3 Communities 2 Collections of patterns 2 Miscelaneous 1