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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/chriskonnertz/regex
Use methods to fluently create a regular expression in PHP
api expression fluent interface library oop php regex regex-string regular regular-expression
Last synced: 22 Jan 2025
https://github.com/stuarthicks/rextract
Simple shell regex capture extractor
cli go golang regex regular-expression regular-expressions
Last synced: 06 Jan 2025
https://github.com/rfdzan/electron-regx
A simple desktop app to do regular expressions with
electronjs javascript regular-expression
Last synced: 28 Dec 2024
https://github.com/benhunter/chkpwd
Check password complexity against rules.
argparse python python3 regular-expression terminal-based utility
Last synced: 08 Feb 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: 30 Jan 2025
