What are regex expressions and how do I use them?
Regex expressions, or regular expressions, are sequences of characters that form a search pattern. They are used for string matching and manipulation.
Can you give me an example of a regex expression?
Sure! A simple regex for matching an email address is: ^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$
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How do I test regex expressions?
You can test regex expressions using online tools like regex101.com or in programming languages that support regex, such as Python or JavaScript.
What are some common use cases for regex?
Common use cases include form validation, searching and replacing text, and data extraction from strings.
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