Pattern Matching Regex Tutorials
![By Jeffrey E. F. Friedl Mastering Regular Expressions (Nutshell Handbooks) (2nd Edition) [Paperback] - Buy now](https://m.media-amazon.com/images/I/51+WGQLCb9L._AC_UY218_.jpg)
By Jeffrey E. F. Friedl Mastering Regular Expressions (Nutshell Handbooks) (2nd Edition) [Paperback]
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Text processing frequently requires code to match text against patterns
A regular expression is a pattern that describes text, or a string of text
The use case is pretty straight forward, you have a string of data and you want to extract values out of the string based on a pattern
In emacs regex, the parenthesis characters are literal
Emacs's regex is not based on perl or python's, but is very similar