06_正则表达式_边界(附带完整视频百度网盘链接)
正则表达式，又称正规表示法、常规表示法（英语：RegularExpression，在代码中常简写为regex、regexp或RE），计算机科/学的一个概念。正则表达式使用单个字符串来描述、匹配一系列符合某个句法规则的字符串。(Regular expression, also known as regular expression and regular expression (in English: Regular Expression, often abbreviated as regex, regexp or RE in code), is a concept of computer science. Regular expressions use a single string to describe and match a series of strings that conform to a certain syntax rule.)
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