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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/csoren66/medical-data-extraction

Medical data extraction from medical documents like prescription and patient details document using python and Regex

fastapi ocr-recognition opencv-python pdf2image pytesseract python regular-expression

Last synced: 30 Dec 2025

https://github.com/mafda/regex_101

A regular expression is a sequence of characters that define a search pattern.

python3 regex regular-expression

Last synced: 11 Sep 2025

https://github.com/jaynetics/regexp_property_values

Inspect property values supported by Ruby's regex engine

onigmo oniguruma regular-expression ruby unicode

Last synced: 18 Jul 2025

https://github.com/ziyi2/rugular

rugular学习笔记

reg regexp regular-expression

Last synced: 05 Jan 2026

https://github.com/rijalghodi/phone-number-validator

Javascript code to solve US phone number validator This code will return true if the passed string looks like US phone number and return flase if doesn't

javascript logic-programming regular-expression

Last synced: 22 May 2026

https://github.com/js-devtools/file-path-filter

Filters file paths using globs, regular expressions, or custom criteria

file-path filepath filesystem filter glob globstar javascript nodejs regular-expression

Last synced: 10 Jun 2025

https://github.com/lebrancworkshop/learn-javascript-regex

Learn Regular Expression on Javascript (Programming Language).

javascript regular-expression

Last synced: 11 Jun 2025

https://github.com/shinnn/tzdata-coordinate-regex

A regular expression for time zone coordinates in zone.tab format

iso6709 javascript regular-expression tz tzdata validation

Last synced: 24 Aug 2025

https://github.com/shinnn/changelog-filename-regex

A regular expression that matches a CHANGELOG filename

changelog javascript regexp regular-expression release-notes

Last synced: 28 Mar 2025

https://github.com/rangoo94/universal-lexer

Parse any text input to tokens, according to provided regular expressions.

lexer lexical-analysis parser parsing regular-expression scanner tokenizer

Last synced: 09 Sep 2025

https://github.com/coolcat467/idlealign

Idle Align - Emacs Align by Regular Expression as an IDLE Extension

align coolcat467 extension idle python python-idle python3 regex regular-expression regular-expressions tkinter-python

Last synced: 11 Apr 2025

https://github.com/bpdesilva/student-registration-system

Procedural Programming concepts with C++ first project of the first year.

c-plus-plus cpp procedural-programming regex regular-expression visualcplusplus visualcpp

Last synced: 24 Apr 2025

https://github.com/carlosstack/cleaning-data-in-r

:pick: :gem: Taking raw data and converting it to tidy data that can be used for later analysis

data-cleaning data-manipulation r-programming regular-expression

Last synced: 30 Jul 2025

https://github.com/tqma113/regular_grammar

A recognizer for strict Regular grammar.

recognizer regular regular-expression regular-expressions

Last synced: 28 Mar 2025

https://github.com/odeassis/regex

Destinado ao aprendizado de expressões regulares e sendo um tipo de "documentação" para iniciantes, e um guia de referência para os já iniciados.

regex regular-expression

Last synced: 20 Mar 2025

https://github.com/ahsankhan26/whatsapp-chat-parser

Takes a txt file of Whatsapp Group Chat and Parses it for analysis.

python regex regular-expression regular-expressions sql whatsapp-chat-parser

Last synced: 08 Apr 2025

https://github.com/ohorbatiuk/renamer

Use regular expressions for renaming files and folders on Synology servers.

docker docker-compose docker-image filter regular-expression rename-files synology synology-servers

Last synced: 13 Apr 2026

https://github.com/exuanbo/reglax

☕ Relax and write some Regex

regex regular-expression

Last synced: 11 Apr 2025

https://github.com/jens-duttke/tslint-filter

Suppress and extend TSLint warnings, before they get returned to the console or your code editor

errors exception extend-rules failures filter ignore modify predefined-rule-wrappers regular-expression rules tslint tslint-filter tslint-rules typescript warnings

Last synced: 08 Apr 2025

https://github.com/schwusch/ret.dart

Tokenizes a string that represents a regular expression.

dart regex regexp regular-expression

Last synced: 26 May 2026

https://github.com/jassielof/regex-zig

Regular expression library for Zig built on PCRE2 and Google’s RE2.

bindings library pcre2 re2 regex regular-expression regular-expressions zig

Last synced: 11 Mar 2026

https://github.com/buzzardgta/close_tabs_by_title

Firefox web extension that closes tabs whose titles match a specific regular expression.

close expression expressions extension firefox regex regular regular-expression regular-expressions tabs title

Last synced: 03 Apr 2025

https://github.com/anandhunv/-email_validation_regular_expression_js

JavaScript email validation using regex for accurate input verification, ensuring valid email formats. HTML form integrated with dynamic JS validation for robust user interaction.

basic basic-javascript css html html-css-javascript javascript regular-expression

Last synced: 17 Mar 2025

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

General purpose regular expressions for JavaScript

practice regexp regexp-validation regular-expression typescript

Last synced: 02 Apr 2025

https://github.com/sleepytariq/regex-filter

Replace matched strings in file names or file content with specified substitute using regular expressions

python3 regular-expression

Last synced: 05 Oct 2025

https://github.com/superb-man/automaton-solver

regex -> abstract syntax tree -> nfa -> dfa(minimized) conversion.

cyk-algorithm dfa dfa-minimization dotfiles json moore-minimization nfa parser regular-expression x-33

Last synced: 06 Oct 2025

https://github.com/yxnan/syntax-for-sublime-text

Syntax highlighting for some languages that are not officially supported by Sublime Text

highlighting regular-expression sublime-text syntax

Last synced: 21 Jan 2026

https://github.com/dzenis-h/js_practice

This repo contains various Vanilla JS applications made with only the sole purpose of sharpening my existing skills, practicing and implementing them, and, of course, learning new ones. If you take a closer look, it's obvious that I've extended this repo to include other (not vanilla JS) technologies, but still based on JavaScript.

ecmascript2017 es6 expressjs javascript nodejs reactjs redux regular-expression vanilla-javascript

Last synced: 11 Apr 2026

https://github.com/ralphtheninja/match-sink

Pipe data to a stream and react to single or multiple matches

regular-expression stream

Last synced: 14 Oct 2025

https://github.com/jnylen/string-matcher

An Elixir Library to run several regular expressions on a string and get values back.

elixir elixir-lang elixir-library regex regular-expression string-matching string-parsing

Last synced: 27 Jan 2026

https://github.com/schonfinkel/regexplay

Readings from "A Play on Regular Expressions", 2010

haskell regular-expression

Last synced: 19 Jul 2026

https://github.com/ilyachvanov/change-style-of-naming

This program changes style of naming variables, functions and classes

gui qt regular-expression

Last synced: 31 Jan 2026

https://github.com/vaeth/mv_perl

mv_perl - A collection of perl scripts (replacement in files, syncing dirs etc)

compare perl-script recursive regular-expression rename renaming-files replace replace-in-files replace-text timestamp touch

Last synced: 25 Feb 2026

https://github.com/shinnn/outdated-pod-regex

Create a regex that matches the Pod list generated with `pod outdated`

cocoapods javascript npm-package regular-expression xcode

Last synced: 15 Apr 2026

https://github.com/hazimavdal/regex

A library for parsing and operating on formal regular expressions

brzozowski-derivative formal-languages parsing regular-expression regular-expressions smlnj

Last synced: 28 Feb 2026

https://github.com/erikplachta/cs-regex-reference-guide

A general reference guide on how to understand and use regex.

computer-science cs guide reference regex regular-expression regular-expressions

Last synced: 04 Mar 2026

https://github.com/schonfinkel/RegexPlay

Readings from "A Play on Regular Expressions", 2010

haskell regular-expression

Last synced: 10 Apr 2025

https://github.com/jmeaster30/vore

VerbOse Regular Expressions - Regular Expression Engine with Verbose English-like Syntax

programming-language regex regular-expression

Last synced: 05 Apr 2026

https://github.com/sukanyadutta52/sentiment-analysis

An Analysis of How Machine Perceives Women and How Women Feel about Themselves As a Result of This Perception: Sentiment Analysis

flair matplotlib nltk-library pandas regular-expression sentiment-analysis spacy textblob vader-sentiment-analysis women-beauty-standard

Last synced: 20 Apr 2026

https://github.com/robertpi/indieregex

A port of .NET 7.0 regex to other .NET versions.

dotnet regex regular-expression

Last synced: 20 Apr 2026

https://github.com/miroslav-reiter/kurz_ako_sa_stat_db_analytikom

📈 Ako sa stať Databázovým ANALYTIKom - Materiály, zdroje, skripty k večernému online školeniu Ako sa stať Databázovým Analytikom pre Robime.it (Mentor Partners)

analytics analytik db dbms mysql regex regex-pattern regular-expression regular-expressions reiter sql

Last synced: 24 Apr 2026

https://github.com/kstenschke/grepc

Grep Chart: List strings that match a pattern in file(s), with and sorted by the amount of occurrences.

cli cli-tool find find-in-files gplv3 grep linux regex regular-expression

Last synced: 27 Apr 2026

https://github.com/themysterysolver/java_basics

This repository contains basic Java concepts with reference to "Head First Java" and weekly lab questions.It covers collections and javafx basics too!

awt basic-java collections docs gui head-first-java java java-learning javafx jdbc-mysql lab-exercise regular-expression servlets-jsp-html-css swing

Last synced: 28 Apr 2026

https://github.com/dreitier/conditional-regex-search-and-replace-action

Executes conditional search and replace operations on a set of files. Strings are replaced by matching regular expressions.

argocd continuous-delivery continuous-deployment continuous-integration github-action github-actions gitops glob regex regular-expression search-and-replace structure

Last synced: 29 Apr 2026

https://github.com/acaciaman/acacia-regex

Many regular expressions python search engine

bus cloud engine oci oracle osb regex regular-expression service terraform

Last synced: 29 Apr 2026

https://github.com/hex7c0/grunt-safer-regex

detect possibly exponential-time regular expressions

grunt-plugins nodejs regex regular-expression

Last synced: 01 May 2026

https://github.com/crispengari/regex-validator

this is a javascript package that validate the validity of common strings. It check if the basic strings like email, password, username are valid.

javascript regular-expression typescript validations validator

Last synced: 02 May 2026

https://github.com/sudha247/silly-markdown-parser

A markdown parser written entirely using regular expressions.

markdown parser python python3 regular-expression

Last synced: 02 May 2026

https://github.com/wahyukmr/javascript-programming

Repository ini adalah sumber daya yang lengkap dan mendalam untuk mempelajari JavaScript dari tingkat pemula hingga tingkat lanjutan. Panduan yang mencakup semua aspek fundamental JavaScript serta konsep yang lebih kompleks.

asynchronous functional-programming guides javascript javascript-es6 modules regex regular-expression

Last synced: 08 Apr 2025

https://github.com/thehashton/regex

regular expressions example for article

form-validation javascript regex regular-expression

Last synced: 19 Jun 2026

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/apsrcreatix/regex

Learning Regular Expressions 🙂 [ALPHA]

regex regular-expression regular-expressions

Last synced: 22 Jun 2025

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/lightningstalker/makolr

Colorizes compiler output from make to increase visibility of compiler warnings and other messages among large amounts of text

ansi-colors avr-gcc cc colors commandline gcc gplus linux linux-shell mac-osx macosx make pearl regex regular-expression shell-script terminal terminal-based unix-like unix-shell

Last synced: 11 Apr 2026

https://github.com/andrewjbateman/angular-regex-project

:clipboard: This app highlights search text within a string. It renders HTML on the screen via a variable and manipulates that HTML based on a query, a regular expression and regex replace logic.

angular angular13 css highlight-text html html5 regex regex-match regular-expression tutorial-code typescript4

Last synced: 21 Apr 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/brenofariasdasilva/regular-expressions

My Most Commonly used Regular Expressions.

regex regular-expression

Last synced: 03 Jan 2026

https://github.com/zoptia/zoptia0regex

A regular-expression (regex) library for Zig — a faithful, linear-time port of Go's regexp (RE2): proven byte-for-byte identical to Go across 30k differential tests, and ~11% faster.

golang nfa re2 redos regex regex-engine regexp regular-expression zig zig-library zig-package

Last synced: 17 Jul 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/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/piotrpsz/ccregex

Regular expression tester. std/qt.pcre2

cpp20 pcre2 qt6 qt6-gui regular-expression

Last synced: 09 May 2026

https://github.com/risicle/cpytraceafl-regex

A modified version of mrab-regex with added cpytraceafl instrumentation

afl-fuzz coverage cpython python regular-expression tracing

Last synced: 15 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/rfdzan/electron-regx

A simple desktop app to do regular expressions with

electronjs javascript regular-expression

Last synced: 05 May 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/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/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/kkirby/regexp-escape

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

nodejs regular-expression

Last synced: 12 Jan 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/dizys/nyu-nlp-homework-2

Develop regular expressions

nlp nyu regular-expression

Last synced: 16 Sep 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/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/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/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/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/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/muhammadawaisshaikh/remove-spaces-regexr

remove spaces using Regular Expression

regex regular-expression typescript

Last synced: 18 May 2026

Regular expression Awesome Lists
Computer-Science-Resources 51 awesome-regex 153
Regular expression Categories
Content 63 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