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regex

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.

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XiaoFeng

C#公用类库,包含了Redis,Memcached,Json,Xml,ADO.NET数据库操作兼容以下数据库(SQLSERVER,MYSQL,ORACLE,达梦,SQLITE,ACCESS,OLEDB,ODBC等数十种数据库),正则表达式,QueryableX(ORM)和EF无缝对接,FTP,网络日志,调度器(作业),网络库(SocketServer,WebSocketServer,SocketClient,WebSocketClient),IO操作,加密算法(AES,DES,DES3,MD5,RSA,RC4,SHA等常用加密算法),超级好用的配置管理器,应用池,类型转换等功能。

  • Updated May 20, 2024
  • C#

NEW ugrep 6.0: a more powerful, ultra fast, user-friendly, compatible grep. Includes a TUI, Google-like Boolean search with AND/OR/NOT, fuzzy search, hexdumps, searches (nested) archives (zip, 7z, tar, pax, cpio), compressed files (gz, Z, bz2, lzma, xz, lz4, zstd, brotli), pdfs, docs, and more

  • Updated May 19, 2024
  • C++

Created by Stephen Cole Kleene

Released 1950

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