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/tahmid-tanzim/regular-expression

Learning Regular Expressions by Kevin Skoglund

pattern-matching regex regex-pattern regular-expression

Last synced: 20 Dec 2024

https://github.com/gelndjj/grep_pdf

Grep_PDF looks through multiple PDF at once to find any word. Regular expressions can be used when the word is not known.

grep-search pdf python regular-expression search

Last synced: 14 Jan 2025

https://github.com/mooseburger1/nfl-social-network-analysis

Performing Social Network Analysis on the 2017 NFL schedule - Scraping the web with Python and Pandas

data-mining data-science data-visualization gephi matplotlib networkx networkx-graph numpy pandas-dataframe python-3 regular-expression social-network-analysis web-scraping

Last synced: 24 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/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: 28 Dec 2024

https://github.com/thgossler/replacepdfhyperlinks

A CLI tool for Windows and Linux to search and replace hyperlinks in PDF documents with regular expressions.

cli hyperlinks pdf regular-expression replace

Last synced: 30 Jan 2025

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/turbobasic/regexyouwillnotforget

Best practices for making complex regular expressions which you will understand half year later

best-practices powershell regex regular-expression

Last synced: 22 Jan 2025

Regular expression Awesome Lists

Computer-Science-Resources 51 awesome-regex 145

Regular expression Categories

Content 55 Regex engines 38 JavaScript regex evolution 22 Testers 15 JavaScript regex libraries 15 Performance 13 Tutorials 11 Grep-like tools 6 Visualizers 6 Syntax-free regex builders 4 Miscelaneous 4 Articles 3 Books 3 Communities 2 Collections of patterns 2