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.
A Windows Shell Extension for more advanced bulk renaming using search and replace or regular expressions
Yet another high-performance C++ regex library and lexical analyzer generator like Flex: extends Flex++ with Unicode support, indent/dedent anchors, lazy quantifiers, functions for lex and syntax error reporting and more. Seamlessly integrates with Bison and other parsers.
A minimalist single-header library for building pattern-matchers, lexers, and parsers.
SolidityCheck is a static code problem detection tool based on regular expressions and program instrumentation, which is developed for Ethereum smart contracts. 《计算机科学》（Computer Science）
Autiepie is a C++ regular expression engine built using Thompson’s NFA construction algorithm, providing deterministic, backtracking-free pattern matching with linear-time performance and support for core regex features such as groups, character classes, quantifiers, and anchors.
Rapid prototyping parser generator
C++17 (CLI/embeddable) Lexical Scanner Generator
A C++ wrapper around the PCRE2 library to provide a more user-friendly and object-oriented interface for using regular expressions, while retaining the performance and flexibility of the original library.
🦙 Simple, one file, easy to use C++11 std::regex wrapper for lazy people.
Regular Expression (Regex) tool that assist in creating and testing expressions.
A multi-engine tool for evaluating regular expressions.
CMP3004 - Formal Languages and Automata Theory Course Project
Fast, parallel c++ implementation of grep command line utility.
C++ interface to PCRE2 library compatible with <regex>
Library Management Portal.
Linear-time, ReDoS-safe C++20 header-only regex engine with bounded lookarounds + an re-compatible Python binding
"This repository focuses on implementing Compiler-Related concepts."
Converting Regular Expressions to Non-deterministic Finite Automaton(NFA) using C++ and displaying the NFA using OpenGL
A Python library to plan a call center workforce based on expected call distribution and operator contract rules, availability and preferences.
Created by Stephen Cole Kleene
Released 1950