Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying The Ruby Workshop
  • Table Of Contents Toc
The Ruby Workshop

The Ruby Workshop

By : Akshat Paul, Philips, Dániel Szabó , Wallace
3.3 (3)
close
close
The Ruby Workshop

The Ruby Workshop

3.3 (3)
By: Akshat Paul, Philips, Dániel Szabó , Wallace

Overview of this book

The beauty of Ruby is its readability and expressiveness. Ruby hides away a lot of the complexity of programming, allowing you to work quickly and 'do more' with fewer lines of code. This makes it a great programming language for beginners, but learning any new skill can still be a daunting task. If you want to learn to code using Ruby, but don't know where to start, The Ruby Workshop will help you cut through the noise and make sense of this fun, flexible language. You'll start by writing and running simple code snippets and Ruby source code files. After learning about strings, numbers, and booleans, you'll see how to store collections of objects with arrays and hashes. You'll then learn how to control the flow of a Ruby program using boolean logic. The book then delves into OOP and explains inheritance, encapsulation, and polymorphism. Gradually, you'll build your knowledge of advanced concepts by learning how to interact with external APIs, before finally exploring the most popular Ruby framework ? Ruby on Rails ? and using it for web development. Throughout this book, you'll work on a series of realistic projects, including simple games, a voting application, and an online blog. By the end of this Ruby book, you'll have the knowledge, skills and confidence to creatively tackle your own ambitious projects with Ruby.
Table of Contents (14 chapters)
close
close

Return Values

Methods are great for wrapping up blocks of code that accomplish some purpose. In many cases, we want to capture the results of that code execution in one or more variables. As such, the method can return these variables to the caller of the method. Conveniently enough, the keyword for returning variables is return.

Here is a basic case of adding two numbers:

def sum(var1, var2)
  return var1 + var2
end

In Ruby, the value of the last line of code in a method is implicitly returned, so we also write this as follows:

def sum(var1, var2)
  var1 + var2
end
total = sum(1, 3)

The choice to do one or the other depends on the developer's style and the requirements of the program.

The Ruby style guide says to avoid the use of the return keyword when not required for flow control.

Multiple Return Values

Ruby methods can also return multiple values. Let's take a look at some simple examples.

The following method returns...

CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
The Ruby Workshop
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon