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Key benefits

The book uses an example-based approach for a better demonstration of the underlying concepts

Develop a thorough appreciation of the roles of the macro API and annotations

Leverage supportive tools – spec, documentation, deployment, and automation

Description

Crystal is a programming language with a concise and user-friendly syntax, along with a seamless system and a performant core, reaching C-like speed. This book will help you gain a deep understanding of the fundamental concepts of Crystal and show you how to apply them to create various types of applications. This book comes packed with step-by-step explanations of essential concepts and practical examples. You'll learn how to use Crystal’s features to create complex and organized projects relying on OOP and its most common design patterns. As you progress, you'll gain a solid understanding of both the basic and advanced features of Crystal. This will enable you to build any application, including command-line interface (CLI) programs and web applications using IOs, concurrency and C bindings, HTTP servers, and the JSON API. By the end of this programming book, you’ll be equipped with the skills you need to use Crystal programming for building and understanding any application you come across.

Who is this book for?

Developers who want to learn Crystal programming or anyone looking to improve their ability to solve real-world problems using the language will find this book helpful. Experience in application development using any other programming language is expected. However, prior knowledge of Crystal is not required.

What you will learn

Explore how Crystal combines the merits of other languages

Understand how to leverage existing C libraries without writing any C

Focus on zero-cost abstractions with compile-time macros

Use an example-based approach to demonstrate language features

Develop a variety of Crystal applications, such as web and CLI apps

Gain an understanding of the macro API and annotations

What do you get with a Packt Subscription?

Free for first 7 days. $19.99 p/m after that. Cancel any time!

Unlimited ad-free access to the largest independent learning library in tech. Access this title and thousands more!

50+ new titles added per month, including many first-to-market concepts and exclusive early access to books as they are being written.

Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.

Thousands of reference materials covering every tech concept you need to stay up to date.

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View plans & pricing

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POE Jun 03, 2022

The authors provide sufficient background and introductory information to get you up and running with Crystal. Some books spend too much time on history and fundamentals; that is not the case with this book. An early chapter covers syntax and constructs of Crystal that includes containers, the type system, and data structures. There is a chapter on object-oriented programming that I suspect most readers can skip. That being said, it does include examples on how to work with objects and classes using Crystal.The best feature of this book is the “learn by doing” chapters that include writing a command-line interface and a web application. These chapters, I believe, are the best in the book. Later chapters cover working with macros, annotations, testing, and documentation.If you are already a software developer and want to explore a new language, this book on Crystal Programming is worth your time.

Amazon Verified review

Crystal Programming: A project-based introduction to building efficient, safe, and readable web and CLI applications

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