Book Image

Mastering Go – Third Edition - Third Edition

By : Mihalis Tsoukalos
5 (2)
Book Image

Mastering Go – Third Edition - Third Edition

5 (2)
By: Mihalis Tsoukalos

Overview of this book

Mastering Go is the essential guide to putting Go to work on real production systems. This freshly updated third edition includes topics like creating RESTful servers and clients, understanding Go generics, and developing gRPC servers and clients. Mastering Go was written for programmers who want to explore the capabilities of Go in practice. As you work your way through the chapters, you’ll gain confidence and a deep understanding of advanced Go concepts, including concurrency and the operation of the Go Garbage Collector, using Go with Docker, writing powerful command-line utilities, working with JavaScript Object Notation (JSON) data, and interacting with databases. You’ll also improve your understanding of Go internals to optimize Go code and use data types and data structures in new and unexpected ways. This essential Go programming book will also take you through the nuances and idioms of Go with exercises and resources to fully embed your newly acquired knowledge. With the help of Mastering Go, you’ll become an expert Go programmer by building Go systems and implementing advanced Go techniques in your projects.
Table of Contents (17 chapters)
14
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15
Index

Modules

A Go module is like a Go package with a version—however, Go modules can consist of multiple packages. Go uses semantic versioning for versioning modules. This means that versions begin with the letter v, followed by the major.minor.patch version numbers. Therefore, you can have versions such as v1.0.0, v1.0.5, and v2.0.2. The v1, v2, and v3 parts signify the major version of a Go package that is usually not backward compatible. This means that if your Go program works with v1, it will not necessarily work with v2 or v3—it might work, but you cannot count on it. The second number in a version is about features. Usually, v1.1.0 has more features than v1.0.2 or v1.0.0, while being compatible with all older versions. Lastly, the third number is just about bug fixes without having any new features. Note that semantic versioning is also used for Go versions.

Go modules were introduced in Go v1.11 but were finalized in Go v1.13.

If you want to learn...