welcome

Thanks for purchasing the MEAP of Go by Example: Programmer's Guide to Idiomatic and Testable Code.

This book is full of practical Go tips and common mistakes to avoid.

Since the previous MEAP update, significant improvements have been made:

Chapters and visuals have been entirely redesigned for better clarity.
A Go crash course has been included in the appendices for beginners.
All code examples are updated for Go version 1.24.2, covering iterators, new benchmarking techniques, and more.

Although extensively revised, the book's promise remains the same:

Helping you acquire the right mindset to write idiomatic, maintainable, and testable Go code.
Demonstrating idiomatic Go through realistic project examples.
Here's a concise roadmap:
Chapter 1 introduces the book's goals and highlights what makes Go unique.
Chapters 2 and 3 focus on testing and benchmarking to cultivate the mindset necessary for the rest of the book.
Chapter 4 covers writing command-line programs.
Chapter 5 discusses dependency injection techniques.
Chapter 6 shows how to structure concurrent programs.
Chapter 7 explores writing responsive and efficient programs.
Chapter 8 dives into structuring packages effectively to avoid import cycles.
Chapter 9 explains how to write composable code.
Chapter 10 demonstrates the idiomatic use of interfaces through practical examples involving SQL databases.
Appendices A to E introduce Go fundamentals, such as pointers and related idiomatic principles.