Regex how-to: Quantifiers, pattern collections, and word boundaries (Red Hat Developer)

Red Hat Developer: Regex how-to: Quantifiers, pattern collections, and word boundaries. “Filtering and searching text with regular expressions is an important skill for every developer. Regular expressions can be tricky to master. To work with them effectively, you need a detailed understanding of their symbols and syntax. Fortunately, learning to work with regular expressions can be incremental. You don’t need to learn everything all at once to do useful work. Rather, you can start with the basics and then move into more complex topics while developing your understanding and using what you know as you go along.”

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