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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/shinnn/exif-date-regex

A regular expression to validate and parse Exif date format

date ecmascript exif javascript lookbehind-assertion named-capture regular-expression validation

Last synced: 01 Aug 2025

https://github.com/massigy/ll1p.go

This is a simple LL(1) grammar tokenizer & parser written in Go.

go-programming-language golang grammar-parser language-theory ll1-grammar ll1-parser parser regular-expression tokenizer

Last synced: 10 Aug 2025

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/jqueryscript/regex

An awesome collection of useful and commonly used Regular Expressions to make life easier.

regex regex-pattern regular-expression regular-expressions

Last synced: 12 Mar 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/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/redkenrok/node-planckmatch

Small and simple matching library using glob patterns.

glob-pattern match matching regular-expression

Last synced: 05 Apr 2025

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/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/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/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/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/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/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/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/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/hex7c0/grunt-safer-regex

detect possibly exponential-time regular expressions

grunt-plugins nodejs regex regular-expression

Last synced: 01 May 2026

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/jhonatanit/parameters-medical-records

Transform unstructured, potentially faulty OCR output into a structured Python list of dictionaries.

ocr python regular-expression

Last synced: 27 Mar 2025

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/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/auvred/regonaut

ES2025-compatible ECMAScript RegExp engine implemented in Go

ecmascript go javascript js regex regex-engine regexp regular-expression regular-expression-engine

Last synced: 14 Apr 2026

https://github.com/jaid/test-string

Checks if a string matches given string, RegExp or function.

library match regex regexp regular-expression string strings test util utility validate validation

Last synced: 31 Oct 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/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/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: 26 Feb 2025

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/raghul-m/data-analysis-with-jupyternotebook-python

This repository consists of notebooks where I learned the basics of getting started with data analysis using Python libraries

beautifulsoup4 data-analysis-python eda jupyter-notebook matplotlib-python numpy pandas-python regular-expression seaborn-python webscraping

Last synced: 19 May 2026

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/ziyi2/rugular

rugular学习笔记

reg regexp regular-expression

Last synced: 05 Jan 2026

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/systemjargon/regex

Regular Expression aka regex. Some examples like, match, find, replace. Mix of usage, bash, powershell, notepad++

regex regexp regular-expression

Last synced: 26 Oct 2025

https://github.com/pavi2410/rgxstr

Regex Star ⭐ Generate strings from patterns - regex, glob

generator glob pattern regex regular-expression string

Last synced: 22 Mar 2025

https://github.com/teneplaysofficial/registration-and-login-system-cpp

A C++ project that provides user registration with email and password, featuring email validation using regular expressions, password length validation, and secure password management with options for resetting passwords. Future plans include implementing a cipher algorithm for enhanced data protection.

cipher-algorithm cpp emailvalidation fstream login-system regular-expression string xor-cipher

Last synced: 23 Feb 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/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 Oct 2025

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/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/exuanbo/reglax

☕ Relax and write some Regex

regex regular-expression

Last synced: 11 Apr 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/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/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/tqma113/regular_grammar

A recognizer for strict Regular grammar.

recognizer regular regular-expression regular-expressions

Last synced: 28 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/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/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/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/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: 10 Aug 2025

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/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/tiaanduplessis/codebar-regex

Regular expression for matching codebar barcode

barcode codebar regex regular-expression

Last synced: 08 Aug 2025

https://github.com/marceloboeira/grab

👋🏼 like grep, but simpler

bash grep regular-expression shell

Last synced: 07 May 2026

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/vstroebel/de-regex

Regular expression based deserialization for serde

regular-expression rust serde

Last synced: 26 Mar 2025

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/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/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/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/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/ledsouza/extrator-url

Projeto sobre extração de informações de uma URL

regular-expression vitrinedev

Last synced: 11 May 2026

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/benhunter/chkpwd

Check password complexity against rules.

argparse python python3 regular-expression terminal-based utility

Last synced: 02 Apr 2025

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/piotrpsz/ccregex

Regular expression tester. std/qt.pcre2

cpp20 pcre2 qt6 qt6-gui regular-expression

Last synced: 09 May 2026

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/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/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/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/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

https://github.com/bluelovers/regexp-support

check RegExp ( regular expressions ) support

nodejs regex regexp regular-expression

Last synced: 13 May 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/xspin/regexparser

Regular Expression Parser and Visualizer

lexer regular-expression visualization

Last synced: 13 Jan 2026

Regular expression Awesome Lists
Computer-Science-Resources 51 awesome-regex 153
Regular expression Categories
Content 92 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