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

Benchmarking Go code

Benchmarking measures the performance of a function or program, allowing you to compare implementations and to understand the impact of changes you make to your code.

Using that information, you can easily reveal the part of the Go code that needs to be rewritten in order to improve its performance.

Never benchmark your Go code on a busy UNIX machine that is currently being used for other, more important, purposes unless you have a very good reason to do so! Otherwise, you will interfere with the benchmarking process and get inaccurate results.

Go follows certain conventions regarding benchmarking. The most important convention is that the name of a benchmark function must begin with Benchmark.

Once again, the go test subcommand is responsible for benchmarking a program. As a result, you still need to import the testing standard Go package and include benchmarking...