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A regular expression regex or regexp for short is a special text string for describing a search pattern You can think of regular expressions as wildcards on steroids You are probably familiar with wildcard notations such as txt to find all text files in a file manager The regex equivalent is txt ">A regular expression regex or regexp for short is a special text string for describing a search pattern You can think of regular expressions as wildcards on steroids You are probably familiar with wildcard notations such as txt to find all text files in a file manager The regex equivalent is [更多]