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Regular Expressions for Occasional Users

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Regular expressions (RegEx) are a method for encoding a representation of objects so that patterns that are substrings in a universe of strings of objects can be detected. They are useful to anyone who needs to process lists. These could be mailing lists, inventory lists, computer file lists, or documents expressed in a computer language like Visual Basic, HTML or XML. Any collection of character strings that are stored on and can be processed on a digital device is a potential application ...