Ruby Is For Fun
Ruby Is For Fun
Self-Study Course, From Absolute Beginner to Advanced
About the Book
This self-study course written as a book is your first step towards making money by coding and programming from home, and doing that with fun. You will understand how the Ruby language works, and establish a foundation for being successful freelance developer. This book 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 book 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.
Table of Contents
-
Front Matter
- In Lieu Of an Introduction
- Ruby vs. Ybur
- Ruby Is For Fun
- What will we study?
- Web Programming Or Something Else?
- How Much Do Programmers Earn?
- Your Advantage
-
Part I. First Steps
- Runtime Environment
- Setting Up Windows (MacOS, Linux) For Your First Program
- Hello, I’m Your REPL
- Running a Program From a File
- Hello, I’m Your File Manager
- File System Essentials
- File System Navigation
- Shell Survival Guide
- Text Editors
- Your First Program
- Variables in Ruby
- String Addition and Multiplication
-
Part II. Essentials
- Data Types
- Everything Is An Object (Proof)
- Type Casting (type conversion)
- Fractional Numbers
- String Interpolation
- Bang!
- Blocks
- Blocks With Parameters
- Methods Of Integer Class
- Testing Variables And Branching
- Combining Conditions
- Some Useful Methods of Ruby Language
- Random Numbers
- Guess The Number Game
-
Part III. Having Fun
- Ternary Operator
- Loading Indicator
- Methods
- Judgement Day Emulator
- Instance and Local Variables
- Programming Slot Machine
- Arrays
- Few Words About “Each”
- Initializing Array
- Accessing Array
- Missing Detail
- Battle of Robots
- Arrays of Arrays (two-dimensional arrays)
- Gems
- Accessing Array of Arrays
- Multi-dimensional Arrays
- Closer Look into Array class
- empty? method
- Methods length, size, count
- include? method
- Adding Elements to Arrays
- Selecting Elements by Criteria
- Rejecting Elements by Criteria
- Take Method
- Is There Any Match? (any?)
- All Elements Should Meet Criteria
- Few Words About Array Methods
- Symbols
- Hash
- Other types as Hash values
- JSON-structure of a real-world application
- English-Spanish dictionary
- Comparison of hashes and arrays
- Most often used methods of Hash class
- Setting a default value in Hash
- Passing parameters to methods
- HashSet
- Iteration over hash elements
- “dig” method
- Key presence
-
Part IV. Fun with Object-Oriented Programming
- Classes and objects
- State
- State, one more example
- Duck typing and polymorphism
- Inheritance
- Modules
- Subtyping vs Inheritance
- Class methods
- The truth about Object-Oriented programming
- Debugging a program
- Debugging by using output to console
- Debugging by using console debugger
- Debugging with IDE
- Practice: save the world with Ruby
- Docker, crash course
- Ruby Version Manager (RVM)
- Testing Ruby programs
- Rspec
- Final words
- Notes
The Leanpub 60-day 100% Happiness Guarantee
Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms
Do Well. Do Good.
Authors have earned$11,716,512writing, publishing and selling on Leanpub, earning 80% royalties while saving up to 25 million pounds of CO2 and up to 46,000 trees.
Learn more about writing on Leanpub
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
Top Books
Recipes for Decoupling
Matthias NobackWrite software that survives
OpenIntro Statistics
David Diez, Christopher Barr, Mine Cetinkaya-Rundel, and OpenIntroA complete foundation for Statistics, also serving as a foundation for Data Science.
Leanpub revenue supports OpenIntro (US-based nonprofit) so we can provide free desk copies to teachers interested in using OpenIntro Statistics in the classroom and expand the project to support free textbooks in other subjects.
More resources: openintro.org.
CQRS by Example
Carlos Buenosvinos, Christian Soronellas, and Keyvan Akbary- Leverage your Software Architecture skills by learning everything about CQRS in detail with lots of examples
- Develop faster applications by applying CQRS and fostering Read Models and Projections
- Learn how to apply CQRS into a brownfield project from a pragmatic approach
C++20 - The Complete Guide
Nicolai M. JosuttisAll new language and library features of C++20 (for those who know previous C++ versions).
The book presents all new language and library features of C++20. Learn how this impacts day-to-day programming, to benefit in practice, to combine new features, and to avoid all new traps.
Buy early, pay less, free updates.
Other books:
Jetpack Compose internals
Jorge CastilloJetpack Compose is the future of Android UI. Master how it works internally and become a more efficient developer with it. You'll also find it valuable if you are not an Android dev. This book provides all the details to understand how the Compose compiler & runtime work, and how to create a client library using them.
Maîtriser Apache JMeter
Philippe Mouawad, Bruno Demion (Milamber), and Antonio Gomes RodriguesToute la puissance d'Apache JMeter expliquée par ses commiteurs et utilisateurs experts. De l'intégration continue en passant par le Cloud, vous découvrirez comment intégrer JMeter à vos processus "Agile" et Devops.
If you're looking for the newer english version of this book, go to Master JMeter : From load testing to DevOps
Ansible for DevOps
Jeff GeerlingAnsible is a simple, but powerful, server and configuration management tool. Learn to use Ansible effectively, whether you manage one server—or thousands.
The PowerShell Scripting and Toolmaking Book
Don Jones and Jeff HicksLearn the patterns, practices, and details of PowerShell Scripting and Toolmaking from the industry's two most recognized experts on the subject.
Mastering STM32 - Second Edition
Carmine NovielloWith more than 1200 microcontrollers, STM32 is probably the most complete ARM Cortex-M platform on the market. This book aims to be the most complete guide around introducing the reader to this exciting MCU portfolio from ST Microelectronics and its official CubeHAL and STM32CubeIDE development environment.
Introduction to Data Science
Rafael A IrizarryThe demand for skilled data science practitioners in industry, academia, and government is rapidly growing. This book introduces concepts from probability, statistical inference, linear regression and machine learning and R programming skills. Throughout the book we demonstrate how these can help you tackle real-world data analysis challenges.
Top Bundles
- #1
Software Architecture
2 Books
"Software Architecture for Developers" is a practical and pragmatic guide to modern, lightweight software architecture, specifically aimed at developers. You'll learn:The essence of software architecture.Why the software architecture role should include coding, coaching and collaboration.The things that you really need to think about before... - #2
CCIE Service Provider Ultimate Study Bundle
2 Books
Piotr Jablonski, Lukasz Bromirski, and Nick Russo have joined forces to deliver the only CCIE Service Provider training resource you'll ever need. This bundle contains a detailed and challenging collection of workbook labs, plus an extensively detailed technical reference guide. All of us have earned the CCIE Service Provider certification... - #4
Pattern-Oriented Memory Forensics and Malware Detection
2 Books
This training bundle for security engineers and researchers, malware and memory forensics analysts includes two accelerated training courses for Windows memory dump analysis using WinDbg. It is also useful for technical support and escalation engineers who analyze memory dumps from complex software environments and need to check for possible... - #6
All the Books of The Medical Futurist
6 Books
We put together the most popular books from The Medical Futurist to provide a clear picture about the major trends shaping the future of medicine and healthcare. Digital health technologies, artificial intelligence, the future of 20 medical specialties, big pharma, data privacy, digital health investments and how technology giants such as Amazon...