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Comprehensive Ruby Programming

You're reading from   Comprehensive Ruby Programming From beginner to confident programmer

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Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781787280649
Length 330 pages
Edition 1st Edition
Languages
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Author (1):
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Jordan Hudgens Jordan Hudgens
Author Profile Icon Jordan Hudgens
Jordan Hudgens
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Table of Contents (20) Chapters Close

Preface 1. Introduction to the Ruby Programming Language 2. Ruby Variables FREE CHAPTER 3. Ruby Strings 4. Working with Numbers in Ruby 5. Ruby Methods 6. Ruby Iterators and Loops 7. Ruby Collections 8. Ruby Conditionals 9. Object-Oriented Programming in Ruby 10. Working with the Filesystem in Ruby 11. Error Handling in Ruby 12. Regular Expressions in Ruby 13. Searching with grep in Ruby 14. Ruby Gems 15. Ruby Metaprogramming 16. Ruby Web Frameworks 17. Working with APIs in Ruby 18. Ruby Algorithms 19. Machine Learning

Using strings in Ruby

A string is a data type in Ruby and contains a set of characters, typically normal English text (or whatever natural language you're building your program for), that you would write. A key point for the syntax of strings is that they have to be enclosed in single or double quotes if you want to use them in a program. The program will throw an error if they are not wrapped inside quotation marks.

Let's walk through three scenarios.

Missing quotation marks

In the preceding code, I tried to simply declare a string without wrapping it in quotation marks. As you can see, this results in an error. This error is because Ruby thinks that the values are classes and methods.

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