Agarwal S. Understanding Ruby Regexp. Example based guide...2024

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Agarwal S. Understanding Ruby Regexp. Example based guide...2024

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Textbook in PDF format Scripting and automation tasks often need to extract particular portions of text from input data or modify them from one format to another. This book will help you learn Ruby Regular Expressions, a mini-programming language for all sorts of text processing needs. The book heavily leans on examples to present features of regular expressions one by one. It is recommended that you manually type each example and experiment with them. Make an effort to understand the sample input as well as the solution presented and check if the output changes (or not!) when you alter some part of the input and the command. As an analogy, consider learning to drive a car — no matter how much you read about them or listen to explanations, you'd need practical experience to become proficient. Exercises are included to test your understanding. Reference solutions are also provided. You should be familiar with programming basics. You should also have a working knowledge of Ruby syntax and features like string formats, string and Enumerable methods. Preface Why is it needed? Regexp introduction Anchors Alternation and Grouping Escaping metacharacters Dot metacharacter and Quantifiers Interlude: Tools for debugging and visualization Working with matched portions Character class Groupings and backreferences Interlude: Common tasks Lookarounds Modifiers Unicode Further Reading