Search results
Results From The WOW.Com Content Network
A regular expression (shortened as regex or regexp), [1] sometimes referred to as rational expression, [2] [3] 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 .
For example, insource:/".*"/ means the same thing as insource:/\.\*/. The character # is also a metacharacter and must be escaped. [clarification needed] Regex experts should note that \n does not mean "newline," \d does not mean "digit," and so on. Regex experts should note that ^ does not mean "beginning of text" and $ does not mean "end of ...
List of regular expression libraries Name Official website Programming language Software license Used by Boost.Regex [Note 1] Boost C++ Libraries: C++: Boost: Notepad++ >= 6.0.0, EmEditor: Boost.Xpressive Boost C++ Libraries: C++ Boost DEELX RegExLab: C++ Proprietary FREJ [Note 2] Fuzzy Regular Expressions for Java: Java: LGPL GLib/GRegex [Note ...
In the case of a web application, the programmer may use the same regular expression to validate input on both the client and the server side of the system. An attacker could inspect the client code, looking for evil regular expressions, and send crafted input directly to the web server in order to hang it. [9]
Below is a simple grammar, defined using the notation of regular expressions and Extended Backus–Naur form. It describes the syntax of S-expressions, a data syntax of the programming language Lisp, which defines productions for the syntactic categories expression, atom, number, symbol, and list:
Ajax—Asynchronous JavaScript and XML; AL—Active Link; AL—Access List; ALAC—Apple Lossless Audio Codec; ALGOL—Algorithmic Language; ALSA—Advanced Linux Sound Architecture; ALU—Arithmetic and Logical Unit; AM—Access Method; AM—Active Matrix; AMOLED—Active-Matrix Organic Light-Emitting Diode; AM—Active Monitor; AM—Allied ...
Help; Learn to edit; Community portal; Recent changes; Upload file; Special pages
JS script, designed for Timeless, which brings useful links directly accessible in the main page and remove useless links. N/A: N/A: mobileUndo : Adds an undo button to the mobile diff interface. 46: 13: RC Patroller : Adds a portlet to the sidebar that shows a regularly updated list of recent changes. 95: 8: Timeless New Message Highlight