We are going to use Python to write some regex. Input validation (emails, usernames, passwords)Īlso, regex is used for text matching in spreadsheets, text editors, IDEs, and Google Analytics.You should learn them for the same reason I do –– they make your work a lot easier.They are portable –– The majority of regex syntax works the same way in a variety of programming languages.Backtracking might take some time, but even that has optimal variations that run super fast They are super fast –– Regex patterns wrote with performance in mind takes a very short time to execute.They do a lot with less –– You can write a few characters to do something that could have taken dozens of lines of code to implement.Here are some of the reasons why you should learn them: While Unicode characters can be used to match any international text, most patterns use normal ASCII (letters, digits, punctuation, and keyboard symbols like Why should I learn regex? When you want to match a string to perhaps validate an email or password, or even extract some data, a regex is an indispensable tool.Įverything in regex is a character. A regular expression is simply a sequence of characters that define a pattern.
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