Gain insights into Ruby development with 78 tasks tailored for beginners and experienced coders. Explore object-oriented concepts, debug programs, and advance your freelance coding career.

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This self-study course written as a book is your first step towards making money by coding and programming from home, and having fun doing it. You will understand how the Ruby language works, and establish a foundation for being a successful freelance developer. This course gives you not only technical detail, but presents knowledge in a friendly format, understandable by all ages, providing a thorough explanation of modern concepts for absolute beginners.

In this course you will find 78 easy to follow tasks, so even people without any programming skill can solve them. Beginners will learn how to create, debug, and understand programs in Ruby. Those who are already familiar with the language will rediscover object-oriented concepts, memory organization, find career advice, and save the planet from a nuclear apocalypse.

Ready to dive into one of the most influential and demanding third generation programming languages? Let's tune in!

The Handbook for Ruby Developers

Which of the following is not a code editor?

Which of the following is not a code editor?

Which statement do we use to put a string to the console in Ruby?


Which statement do we use to put a string to the console in Ruby?

Which statement do we use to get a string from the console in Ruby?


Which statement do we use to get a string from the console in Ruby?

Which naming convention is preferred for variable names in Ruby?


Which naming convention is preferred for variable names in Ruby?

What is the result of the “1” + “2” expression in Ruby?


What is the result of the “1” + “2” expression in Ruby?

What is the result of "1 + 2" expression in Ruby?

What is the result of “1 + 2” expression in Ruby?

Variable `tmp` is initialized and holds a reference to an object. How can we find out the name of the class for this object?

Variable <code>tmp</code> is initialized and holds a reference to an object. How can we find out the name of the class for this object?

Everything is a/an ______ in Ruby.

Which method do we use to convert a string to an integer?


Which method do we use to convert a string to an integer?

Which method do we use to convert an arbitrary object to a string?


Which method do we use to convert an arbitrary object to a string?

Which class is okay to use if we want to represent 3.14 in Ruby for simple calculations?


Which class is okay to use if we want to represent 3.14 in Ruby for simple calculations?

Which class should we use if we want to represent 3.141592653589793238462643383279502884197169399375105820974944592307816406286 in Ruby for more precise calculations?

Which class should we use if we want to represent 3.141592653589793238462643383279502884197169399375105820974944592307816406286 in Ruby for more precise calculations?

True or False: Interpolation is a handy way to concatenate strings.


True or False: Interpolation is a handy way to concatenate strings.

Method that is used to perform an operation on the object itself


The dangerous method of an object is a ______.


The dangerous method of an object is a ______.

What is the maximum number of lines of code that is allowed in a Ruby block?


What is the maximum number of lines of code that is allowed in a Ruby block?

True or False: Ruby blocks are little anonymous functions that can be passed into methods.


True or False: Ruby blocks are little anonymous functions that can be passed into methods.

Which character surrounds block parameters?


Which character surrounds block parameters?

Take a quiz on the fundamentals of Ruby before moving onto the next chapter.


Quiz: Fundamentals of Ruby

Take a quiz on the fundamentals of Ruby before moving onto the next chapter.

Before We Begin

First Steps

Fundamentals of Ruby

Conditional Statements

Operators and Methods

Arrays

Hash

Fun with Object Oriented Programming

Debugging in Ruby

Ruby Version Manager

Testing Ruby Programs

Wrap Up!

Appendix

Quiz: Fundamentals of Ruby