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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Index

Overview of Go generics

This section discusses Go generics, which is a forthcoming Go feature. Currently, generics and Go are under discussion by the Go community. However, one way or another, it is good to know how generics work, its philosophy, and what the generics discussions are about.

Go generics has been one of the most requested additions to the Go programming language. At the time of writing, it is said that generics is going to be part of Go 1.18.

The main idea behind generics in Go, as well as any other programming language that supports generics, is not having to write special code for supporting multiple data types when performing the same task.

Currently, Go supports multiple data types in functions such as fmt.Println() using the empty interface and reflection—both interfaces and reflection are discussed in Chapter 4, Reflection and Interfaces.

However, demanding every programmer to write lots of code and implement lots...