Book Image

Mastering Go - Second Edition

By : Mihalis Tsoukalos
Book Image

Mastering Go - Second Edition

By: Mihalis Tsoukalos

Overview of this book

Often referred to (incorrectly) as Golang, Go is the high-performance systems language of the future. Mastering Go, Second Edition helps you become a productive expert Go programmer, building and improving on the groundbreaking first edition. Mastering Go, Second Edition shows how to put Go to work on real production systems. For programmers who already know the Go language basics, this book provides examples, patterns, and clear explanations to help you deeply understand Go’s capabilities and apply them in your programming work. The book covers the nuances of Go, with in-depth guides on types and structures, packages, concurrency, network programming, compiler design, optimization, and more. Each chapter ends with exercises and resources to fully embed your new knowledge. This second edition includes a completely new chapter on machine learning in Go, guiding you from the foundation statistics techniques through simple regression and clustering to classification, neural networks, and anomaly detection. Other chapters are expanded to cover using Go with Docker and Kubernetes, Git, WebAssembly, JSON, and more. If you take the Go programming language seriously, the second edition of this book is an essential guide on expert techniques.
Table of Contents (20 chapters)
Title Page

Catching race conditions

A data race condition is a situation where two or more running elements, such as threads and goroutines, try to take control of or modify a shared resource or a variable of a program. Strictly speaking, a data race occurs when two or more instructions access the same memory address, where at least one of them performs a write operation. If all operations are read operations, then there is no race condition.

Using the -race flag when running or building a Go source file will turn on the Go race detector, which will make the compiler create a modified version of a typical executable file. This modified version can record all access to shared variables as well as all synchronization events that take place, including calls to sync.Mutex and sync.WaitGroup. After analyzing the relevant events, the race detector prints a report that can help you to identify potential...