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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/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/hnx8/bregonigdotnet

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

bregonig csharp onigmo regular-expression

Last synced: 19 Oct 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/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/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/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/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/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/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/susji/mre

Toy regular expression library

regex regular-expression

Last synced: 02 Apr 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/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/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/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/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/ledsouza/extrator-url

Projeto sobre extração de informações de uma URL

regular-expression vitrinedev

Last synced: 11 May 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/coditheck/regex-tutorial

A regular expression or regular expression or pattern is a string of characters that describes, according to a character string that describes, according to a precise syntax, a set of possible possible strings.

regex regex-pattern regex-tutorial regexp regular-expression

Last synced: 05 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/terieyenike/userform

Type checking user form with Regex

bootstrap4 css html javascript regex regular-expression

Last synced: 07 May 2026

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/vstroebel/de-regex

Regular expression based deserialization for serde

regular-expression rust serde

Last synced: 26 Mar 2025

https://github.com/FaraazArsath/User-Registration-Login

This Python script provides a simple user registration system with username and password validation using regular expressions. It also includes a password recovery option.

filehandling if-else python regular-expression

Last synced: 26 Feb 2025

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/codedwells/regular-expressions

This repo contains some regex learning material.

javascript regex regexp regular-expression

Last synced: 31 Mar 2025

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/gpalleschi/jasciistat

A java line command tool to calculate statistic on ascii files new line terminated.

ascii extract-string regular-expression statistic

Last synced: 09 Jun 2026

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/mohamedsalem401/regex-wizard

A web-based application crafted for the sole purpose of testing and experimenting with regular expressions (regex).

react regex regular-expression regular-expressions typescript webapp

Last synced: 08 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/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/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: 20 Jun 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/gebv/strparam

parameterized pattern matching (faster alternative to golang regexp)

golang golang-library regular-expression string-matching

Last synced: 03 Apr 2025

https://github.com/faraazarsath/user-registration-login

This Python script provides a simple user registration system with username and password validation using regular expressions. It also includes a password recovery option.

filehandling if-else python regular-expression

Last synced: 29 Apr 2026

https://github.com/samliebl/regex-map-replace

Run a text string through an array of individual match-replace regular expressions.

map match regex regexp regular-expression replace replace-text string-formatter

Last synced: 14 Mar 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

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/0necontroller/regular-expressions

This repo contains some regex learning material.

javascript regex regexp regular-expression

Last synced: 28 Aug 2025

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/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/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/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/mrheer/regularcopy

copy files by recursion

copy python regular-expression

Last synced: 19 Mar 2025

https://github.com/ponlawat-w/thai-spelling-fix

การตรวจจับและแก้ไขการพิมพ์ที่ไม่เป็นไปตามหลัก (เช่น สระเอสองตัวแทนที่ควรจะเป็นสระแอ การันต์มาก่อนสระอุ เป็นต้น) โดยใช้นิพจน์ปรกติ (regular expression) | Detection and correction of Thai text common misspelling using regular expression

regular-expression spelling-correction thai thai-language

Last synced: 26 Aug 2025

https://github.com/pionl/match-replace-all

Finds strings by given match and replaces the content using callback function

javascript regular-expression replace-text

Last synced: 24 Aug 2025

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/andrewjbateman/vue-regex-project

:clipboard: App to highlight text in a string using vue-js and regular expressions, from Nic Raboy of X-Team.com. Do not update dependencies or it will not work, due to changes within Web-pack and Babel

css html5 javascript regexp regular-expression vue vuejs

Last synced: 19 Apr 2026

https://github.com/spaceshaman/deckard

Extract structured data from unstructured text — no AI, just regular expressions. 🔍

data-extraction extract extract-data regex regular-expression

Last synced: 22 Aug 2025

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/piotrpsz/ccregex

Regular expression tester. std/qt.pcre2

cpp20 pcre2 qt6 qt6-gui regular-expression

Last synced: 09 May 2026

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/sukanyadutta52/topic_modeling

What are the most pressing concerns regarding ‘Climate Change’ among tweeters according to Topic Modeling?

climate-change gensim matplotlib nltk numpy pandas pyldavis regular-expression spacy

Last synced: 09 Apr 2026

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/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/tiaanduplessis/codebar-regex

Regular expression for matching codebar barcode

barcode codebar regex regular-expression

Last synced: 08 Aug 2025

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/rabestro/jetbrains-academy-smart-calculator

Calculators are a very helpful tool that we all use on a regular basis. Why not create one yourself, and make it really special? In this project, you will write a calculator that not only adds, subtracts, and multiplies, but is also smart enough to remember your previous calculations.

arraydeque calculator calculator-application enum hashmap interface-java jetbrains-academy lambda-expressions lambda-functions list mathematics polish-notation postfix-notation regular-expression stack stream student-project

Last synced: 08 Nov 2025

https://github.com/basemax/url-validator-nodejs

This is a simple module for validating urls in nodejs and javascript that help you to extract urls from a text, check if a text has a url, check if a text has a specific url, and check if a text is excatly a url.

javascript js nodejs regex regular-expression regular-expression-parser regular-expressions url-validate url-validator validate validator

Last synced: 19 Jun 2026

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/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/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/jelhamm/regression-algorithms

"This repository serves as a comprehensive resource for understanding and applying Regression techniques in achine learning and statistical modeling."

achine-learning builder-pattern decision-tree decision-tree-classifier design-pattern factory-pattern linear-regression python random-forest random-forest-classifier regression regression-models regular-expression statistical-models

Last synced: 31 Jul 2025

https://github.com/archetipo95/esercizi-automi-e-linguaggi-formali

Raccolta esercizi svolti in jflap 8 beta durante il corso di Automi e Linguaggi Formali.

alf automata esercizi jflap pushdown-automaton regular-expression turing-machine

Last synced: 23 Sep 2025

https://github.com/marceloboeira/grab

👋🏼 like grep, but simpler

bash grep regular-expression shell

Last synced: 07 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/gehad-ahmed30/tweets_sentiment_analysis_lstm

Twitter Sentiment Analysis web app using a Bidirectional LSTM model. Predicts whether tweets are Positive, Negative, Neutral, or Irrelevant.

ai bidirectional-lstm deep-learning lstm nlp regular-expression tokenization tweets-sentiments

Last synced: 19 Sep 2025

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/adam-marianowski/regex-form-example

Simple form built in JavaScript and HTML with Bootstrap using regular expressions for input validation

form-validation javascript regular-expression

Last synced: 27 Jul 2025

https://github.com/lfmramos/tool-coh-piah

The COH-PIAH Detector is a Python program that analyses linguistic patterns to identify similarities between texts.

python regular-expression

Last synced: 26 Jul 2025

https://github.com/university-experience/regex-awk

Distributed Operation Systems Lab2

awk docker linux regex regular-expression ubuntu

Last synced: 19 May 2026

https://github.com/jet-logic/renx

command-line utility for batch renaming files and directories with advanced pattern matching and transformation capabilities

command-line-tool filesystem python regex regular-expression rename-files unicode-characters

Last synced: 09 Apr 2026

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/dizys/nyu-nlp-homework-2

Develop regular expressions

nlp nyu regular-expression

Last synced: 16 Sep 2025

https://github.com/inc0g-repoz/profanityfilter

An easy to use profanities filter that uses regular expressions to indicate swearings in text messages.

java java-8 java8 regex regex-match regex-pattern regexes regexp regular-expression regular-expressions

Last synced: 03 Jan 2026

Regular expression Awesome Lists
Computer-Science-Resources 51 awesome-regex 153
Regular expression Categories
Content 63 Regex engines 44 JavaScript regex evolution 24 JavaScript regex libraries 22 Testers 21 Performance 15 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