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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: 2025-02-10 00:25:27 UTC
JSON Representation

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

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

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Last synced: 26 Dec 2024

https://github.com/plandes/recrepl

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

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Last synced: 02 Jan 2025

https://github.com/piotrpsz/ccregex

Regular expression tester. std/qt.pcre2

cpp20 pcre2 qt6 qt6-gui regular-expression

Last synced: 27 Dec 2024

https://github.com/hariprasath-v/machinehack-sentiment_analysis_weekend_hackathon_edition_2

Sentiment classification of reviews/tweets

nlp-machine-learning regular-expression seaborn text-preprocessing

Last synced: 13 Jan 2025

https://github.com/benhunter/chkpwd

Check password complexity against rules.

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Last synced: 08 Feb 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