Practical Ruby 3 Programming

This book gives Ruby fans the skills they need to become well-versed in Ruby and build solid applications. It starts with the basics and moves on to exploring the power of blocks, procs, and lambdas. You'll learn how these constructs make your code more flexible and reusable. As you go through it, you'll learn about enumerators, which help you streamline iteration and handle complex data transformations with ease.

Then, you'll dive into the exciting world of RubyGems, where you'll learn to find, install, and manage gems like a pro. You'll get hands-on with popular gems like Nokogiri and Faker, showing how to take Ruby to the next level for tasks like parsing HTML and generating realistic test data. And you'll even learn how to create and distribute your own custom gems, so you can share your innovations with the entire Ruby community. Performance is a big focus too, with techniques for measuring how well Ruby programs run and finding the things that slow them down. It also covers packaging Ruby applications in detail, showing how to create executables and prepare programs for seamless distribution to your users. It's all about keeping track of changes with Git, working with others, and keeping your project history neat and tidy.

By the time you're done with this book, you'll have a firm grasp on Ruby and the know-how to create, optimize, and deploy cutting-edge Ruby applications. This book will take all you Ruby fanatics and transform you into proficient developers. You'll be ready to take on real-world challenges and contribute to the whole Ruby ecosystem.

Key Learnings

Get a handle on Ruby's blocks, procs, and lambdas so you can create flexible, reusable code.

Package your Ruby applications into ready-to-go executables and gems for easy distribution.

Use enumerators to quickly handle complex data transformations and iteration processes.

Find and manage RubyGems to add more features to your apps with libraries made by the community.

Measure performance and identify code bottlenecks with benchmarking techniques.

Use Git for version control to track changes, collaborate, and keep a clean project history.

Use popular gems like Nokogiri and Faker to improve how you parse data and generate realistic test data.

Follow best practices for debugging, performance optimization, and dependency management for apps.

Table of Content

Getting Started with Ruby 3

Up and Running with Ruby Syntax

Exploring Control Flow and Blocks

Handling Errors Gracefully

Object-Oriented Programming Basics

Modules and Refinements

Advanced Methods and Metaprogramming

Built-in Classes and Modules

Working with Procs, Lambdas, and Enumerators

Up and Running with Gems