Commonly used regular expression examples
Introduction
update time：2018-02-08Regular expressions, also known as regular expressions, are a concept in computer science. Regular expressions are often used to retrieve and replace text that matches a certain pattern. Many programming languages support string manipulation using regular expressions. For example, Perl has a powerful regular expression engine built into it. The concept of regular expressions was originally popularized by tool software in Unix. Regular expressions are often abbreviated as "regex", the singular includes regexp, regex, and the plural includes regexps, regexes, and regexen.
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