How To Learn RegEx Fast

Regular expressions are very useful if you're a programmer or a productivity freak, but can be confusing initially. However, if you're good with regular expressions, then you can save a lot of time and effort.

A regular expression, or regex, or regexp, is a string of characters that match certain patterns of text. For example, you can have a regular expression that looks for phone numbers so that you'll be able to extract them, or you can look for email addresses, and so on.

A fantastic free online regex tool that allows you to test and try out regular expressions can be found at RegExr. This is a great tool that allows you to test your regular expressions, and also learn regexps if you're new to them.

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