John Arundel – The Deeper Love of Go

Hello, and welcome to learning Go! It’s great to have you here.

This book assumes no previous knowledge of programming, and gently introduces you to Go step by step, challenging you to apply each new concept as you learn it. If you’ve used Go before but feel somehow you skipped something important, this book will build your confidence in the fundamentals. Take your first steps toward mastery with my fun, readable, and easy-to-follow guide.

Throughout the book we’ll be working together to develop a fun and useful project in Go: an online bookstore called Happy Fun Books. You’ll learn how to use Go to store data about real-world objects such as books, how to write code to manage and modify that data, and how to build useful and effective programs around it.

What You’ll Learn In The Deeper Love of Go

• How to write tests in Go and how to develop projects guided by tests
• How to manage data in Go using built-in types, user-defined struct types, and collections such as maps and slices
• How to use objects to model problems in Go, and how to add behaviour to objects using methods
• How to use pointers to write methods for objects, and how to use types and validation to make your Go packages a delight to use
• How to read and write persistent data from disk files, and how to encode and decode data from JSON format
• How to use Go’s built-in testing framework to write powerful, reliable tests, including test helpers and self-cleaning temporary directories
• How to design useful abstractions and interfaces, creating robust and re-usable software components that you can publish to the universal library of Go packages
• How to write and test concurrent programs, understand the behaviour of goroutines and the Go scheduler, and how to use mutexes to synchronise access to shared data and avoid data races
• How to write HTTP servers and clients, build safe and reliable distributed systems, and design flexible, powerful APIs and network services

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