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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.

GitHub: https://github.com/topics/regular-expression
Wikipedia: https://en.wikipedia.org/wiki/Regular_expression
Created by: Stephen Cole Kleene
Released: 1950
Related Topics: pattern-matching, wildcard, glob, grep, awk, sed,
Aliases: regex, regexp, regular-expressions,
Last updated: 2025-02-09 00:25:35 UTC
JSON Representation

https://github.com/zadean/xs_regex

XML Schema Regex for Erlang

erlang regex regular-expression xml xml-schema xpath xquery

Last synced: 11 Oct 2024

https://github.com/jabhij/py-regularexpressionx

Everything you need to know about Regular Expression in python for scientific work, especially related to Data Science.

python regex regular-expression

Last synced: 17 Jan 2025

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

detect possibly exponential-time regular expressions (with cli support)

cli nodejs regex regular-expression

Last synced: 28 Nov 2024

https://github.com/gpalleschi/pyexpresso

A Visual Tool to check regular expression written in Python using Kivy GUI framework, it permits test expressions, save expression on file and load expression from a file.

kivy kivy-framework python regular-expression regular-expressions

Last synced: 27 Jan 2025

https://github.com/dohliam/portable-regex

A regular expression tool with live-updating search and replace

grep regex regular-expression test-regex

Last synced: 26 Jan 2025

https://github.com/regexhq/floating-point-regex

Regular expression for matching floating-point literals.

floating-point number regex regexp regular-expression

Last synced: 20 Nov 2024

https://github.com/smimram/regrade

Simple grading system using regular expressions.

assignment grade homework ocaml regular-expression

Last synced: 22 Dec 2024

https://github.com/serpent7776/rer

regular expression based file renamer

commandline regex regular-expression rename rename-files utility

Last synced: 18 Jan 2025

https://github.com/sinkaroid/nhentaish

bash nhentai downloader

bash doujinshi nhentai regular-expression

Last synced: 23 Dec 2024

https://github.com/rafael-santiago/here

A tiny C-library that implements regular expressions.

c minimalist-library regular-expression

Last synced: 22 Dec 2024

https://github.com/sksaju/free-code-camp

My solution of freecodecamp challenges..

algorithms data-structures debugging es6 javascript nodejs reactjs redux regular-expression

Last synced: 24 Dec 2024

https://github.com/mohaphez/linux-tutorial-tricks

Here I‍ note all I know about linux commands , tricks, and what I have from experiences.

bash linux linux-commands linux-tutorial regular-expression tutorial vim

Last synced: 27 Jan 2025

https://github.com/toxe/test-cpp-regex

C++ Regular Expression Examples

boost cmake cpp examples hyperscan pcre pcre2 re2 regex regular-expression

Last synced: 27 Jan 2025

https://github.com/mooseburger1/2015-twitter-airline-sentiment-analysis

Performing sentiment analysis of airlines from Twitter Data.

matplotlib numpy pandas-dataframe python3 regular-expression

Last synced: 24 Jan 2025

https://github.com/kei-k23/g-grep

G-grep is a small regular expression (regex) engine that is written in Go

go regex regular-expression

Last synced: 31 Jan 2025

https://github.com/basemax/iranian-phonenumber-validator-nodejs

A library for validating Iranian phone numbers in nodejs that can help you to extract all phone numbers from a text, check if a text has a phone number, check if a text is exactly a phone number, check if a text includes a special phone number.

iran iranian javascript js node nodejs phone-number phone-number-validation phone-number-validator phonenumber phonenumber-validation phonenumber-validator regex regex-pattern regular-expression regular-expressions validate validator validators

Last synced: 09 Feb 2025

https://github.com/robertpi/indieregex

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

dotnet regex regular-expression

Last synced: 28 Jan 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: 14 Jan 2025

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: 09 Jan 2025

https://github.com/hugoalh/url-regexp-es

An ES (JavaScript & TypeScript) module for URL regular expression.

es javascript js modulejs regexp regular-expression ts typescript url

Last synced: 27 Jan 2025

https://github.com/pavi2410/rgxstr

Regex Star ⭐ Generate strings from patterns - regex, glob

generator glob pattern regex regular-expression string

Last synced: 28 Jan 2025

https://github.com/adalinesimonian/clean-regexp-cli

Clean up regular expressions from the command line.

clean cleaner cleanup cli command-line command-line-tool node-js nodejs regex regular-expression regular-expressions tool

Last synced: 08 Jan 2025

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

Tokenizes a string that represents a regular expression.

dart regex regexp regular-expression

Last synced: 15 Jan 2025

https://github.com/aegoroff/grok

Regular expressions macro engine

c grok regular-expression

Last synced: 10 Nov 2024

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 Dec 2024

https://github.com/hugoalh-studio/regexp-pattern-nodejs

A NodeJS module to provide regular expression pattern.

nodejs pattern regex regexp regexr regular-expression

Last synced: 24 Jan 2025

https://github.com/gelndjj/emaner

A user-friendly macOS tool for efficient and customizable file renaming, supporting bulk operations and advanced patterns with regular expressions.

automation bulkrename data-organization digital-archive file-utilities filemanagement filerename filerenaming filesorter macos python-app regular-expression user-friendly

Last synced: 14 Jan 2025

https://github.com/nagasai123-k/compiler-design---18csc304j-

18CSC304J Compiler Design Lab codes

dfa first-and-follow left-facto left-recursion left-recursion-elimination lexical-analysis nfa nfa-implementation nfa-to-dfa-conversion paser predictive-parsing quadruple regular-expression semantic-analysis syntax-analysis

Last synced: 22 Jan 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: 21 Dec 2024

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

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

regular-expression stream

Last synced: 31 Dec 2024

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

This program changes style of naming variables, functions and classes

overloading regular-expression ui

Last synced: 24 Nov 2024

https://github.com/javercel/regexp

The RegExp object is used for matching text with a pattern.

regex regexp regular-expression

Last synced: 15 Nov 2024

https://github.com/zeqiang-lai/visualization-of-regx2dfa

Java program that converts regular expression to DFA.

dfa java nfa regular-expression visualization-tools

Last synced: 27 Jan 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: 15 Nov 2024

https://github.com/schonfinkel/regexplay

Readings from "A Play on Regular Expressions", 2010

haskell regular-expression

Last synced: 22 Dec 2024

https://github.com/ziyi2/rugular

rugular学习笔记

reg regexp regular-expression

Last synced: 29 Jan 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: 22 Dec 2024

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

detect possibly exponential-time regular expressions

grunt-plugins nodejs regex regular-expression

Last synced: 27 Jan 2025

https://github.com/stdlib-js/string-base-replace

Replace search occurrences with a replacement string.

base expression javascript node node-js nodejs regex regexp regular regular-expression replace search stdlib str string util utilities utility utils

Last synced: 29 Jan 2025

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 Jan 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: 02 Feb 2025

https://github.com/pavi2410/regxstr

Regex Star ⭐ Generate strings from patterns - regex, glob

generator glob pattern regex regular-expression string

Last synced: 29 Nov 2024

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: 13 Oct 2024

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: 13 Jan 2025

https://github.com/arxeiss/regex-patterns-to-sentences

dialogflow dialogflow-json generated-sentences regular-expression sentences

Last synced: 17 Oct 2024

https://github.com/sonjoydatta/creditcard-payment

Credit Card payment form and validation

bootstrap javascript nextjs reactjs regular-expression responsive-web-design sass validation

Last synced: 12 Oct 2024

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

A markdown parser written entirely using regular expressions.

markdown parser python python3 regular-expression

Last synced: 31 Dec 2024

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: 25 Jan 2025

https://github.com/mtrsk/regexplay

Readings from "A Play on Regular Expressions", 2010

haskell regular-expression

Last synced: 06 Nov 2024

https://github.com/saketkothari/freecodecamp-javascript-algorithms-and-data-structures

freeCodeCamp JavaScript Algorithms and Data Structures Solutions

algorithms basic-data-structures debugging es6 functional-programming javascript object-oriented-programming regular-expression

Last synced: 26 Jan 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: 20 Dec 2024

https://github.com/sauternic/regular-expression-javascript

Search text with regular-expression

ausdruecke drag-and-drop file filereader filter html javascript list localstorage regexp regulaere regulaere-ausdruecke regulaerer-ausdruck regular-expression regular-expressions search searching suchen text

Last synced: 19 Jan 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: 02 Feb 2025

https://github.com/itsrosewood2003/javascript-algorithms-and-data-structures-projects

These are freeCodeCamp [JAVASCRIPT ALGORITHMS AND DATA STRUCTURES ] core curriculum's Certification Projects.

array-methods asynchronous-programming basic-algorithm basic-debugging basic-javascript date-object dom-manipulation fetch-and-promises form-validation functional-programming javascript-fundamentals localstorage modern-javascript object-oriented-programming recursion regular-expression review-algorithmic-thinking string-methods

Last synced: 03 Feb 2025

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: 02 Feb 2025

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

Learn Regular Expression on Javascript (Programming Language).

javascript regular-expression

Last synced: 06 Feb 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: 22 Dec 2024

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: 17 Jan 2025

https://github.com/ashbyt/python

Ashley Bythell - Python

dat data-cleansing data-quality data-science dataframe exploratory-data-analysis gis missing-data numpy pandas parsing python regression regular-expression scraping-websites sklearn svm-classifier visualization wrangling

Last synced: 05 Jan 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: 04 Dec 2024

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: 04 Dec 2024

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: 09 Feb 2025

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

General purpose regular expressions for JavaScript

practice regexp regexp-validation regular-expression typescript

Last synced: 08 Feb 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: 09 Feb 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: 12 Dec 2024

https://github.com/dohliam/elements-of-a-in-b

Find matching strings in two columns using regular expressions

columns javascript matches regex regular-expression tiny-tools

Last synced: 26 Jan 2025

https://github.com/redkenrok/node-planckmatch

Small and simple matching library using glob patterns.

glob-pattern match matching regular-expression

Last synced: 18 Dec 2024

https://github.com/gyumeijie/regexp

A quick regular expression cheatsheet by examples.

cheatsheet regular-expression

Last synced: 02 Feb 2025

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: 25 Dec 2024

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: 26 Dec 2024

https://github.com/ajhsu/regextract

Extracting text with Regular Expression

javascript regexp regular-expression

Last synced: 27 Dec 2024

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 Dec 2024

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: 04 Jan 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: 02 Feb 2025

https://github.com/tqma113/regular_grammar

A recognizer for strict Regular grammar.

recognizer regular regular-expression regular-expressions

Last synced: 02 Feb 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: 12 Jan 2025

https://github.com/lexhouk/synology

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: 18 Jan 2025

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: 18 Jan 2025

https://github.com/irisng/headphones-arena

A Headphone Comparison Website

analytics async axios css express forum html mongodb nodejs passport react redux regular-expression searchbar

Last synced: 18 Jan 2025

https://github.com/miamib34ch/hse-dataanalysistechnologies

Practical works on the subject "Data Analysis Technologies on the Internet"

json json-schema json2html jsonpath kinopoisk lxml-etree matplotlib networkx-graph nltk-python pandas pymorphy2 regular-expression seaborn textblob-sentiment-analysis vk-api xml xml-dtd xml-schema xpath-expression xslt

Last synced: 19 Jan 2025

https://github.com/emahtab/regular-expression-matching

Regular Expression Matching

leetcode problem-solving recursion regular-expression

Last synced: 02 Feb 2025

https://github.com/joshaaronlevy/regexbuddy

Implement common regex functionality in your code with a simplified syntax

case-converter email-validation javascript password-validation password-validator regex regular-expression string-manipulation string-matching

Last synced: 19 Jan 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: 23 Jan 2025

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: 19 Jan 2025

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: 19 Jan 2025

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 Jan 2025

https://github.com/msthamizh/bizcardx-extracting-business-card-data-with-ocr

Developing a Streamlit application that enables users to upload business card images and extract key details using easyOCR. The app allows users to manage the extracted data (view, update, delete) and securely stores it in a MySQL database. It also highlights extracted text directly on the business card image using Pillow.

easyocr mysql numpy pandas pillow python regular-expression streamlit

Last synced: 27 Dec 2024

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: 07 Feb 2025

https://github.com/dimitryzub/scrape-google-play-store-app

Single script to scrape Google Play Store App info without browser automation

datascience datascraper datascraping dataset googleplay googleplaystore python regex regular-expression scraping scraping-python webscraping

Last synced: 07 Feb 2025

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

This is a simple email validator for NodeJS that can match all emails in a string, check if a string has an email address, or check if a string includes a specific email address. You can use this module to validate emails in your NodeJS projects.

email email-validate email-validator javascript javascript-regex js js-regex regex regex-javascript regex-js regular-expression regular-expression-javascript regular-expression-js regular-expressions validator