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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
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https://github.com/pptacher/hackerrank

dc3 deterministic-finite-automaton longest-common-prefix longest-palindromic-substring regular-expression suffixarray

Last synced: 12 Jan 2025

https://github.com/muhammadawaisshaikh/remove-spaces-regexr

remove spaces using Regular Expression

regex regular-expression typescript

Last synced: 31 Jan 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