Book Image

Learning Go Programming

By : Vladimir Vivien, Parth Desai
Book Image

Learning Go Programming

By: Vladimir Vivien, Parth Desai

Overview of this book

The Go programming language has firmly established itself as a favorite for building complex and scalable system applications. Go offers a direct and practical approach to programming that let programmers write correct and predictable code using concurrency idioms and a full-featured standard library. This is a step-by-step, practical guide full of real world examples to help you get started with Go in no time at all. We start off by understanding the fundamentals of Go, followed by a detailed description of the Go data types, program structures and Maps. After this, you learn how to use Go concurrency idioms to avoid pitfalls and create programs that are exact in expected behavior. Next, you will be familiarized with the tools and libraries that are available in Go for writing and exercising tests, benchmarking, and code coverage. Finally, you will be able to utilize some of the most important features of GO such as, Network Programming and OS integration to build efficient applications. All the concepts are explained in a crisp and concise manner and by the end of this book; you would be able to create highly efficient programs that you can deploy over cloud.
Table of Contents (18 chapters)
Learning Go Programming
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface

The Go package


Similar to other languages, Go source code files are grouped into compilable and sharable units known as packages. However, all Go source files must belong to a package (there is no such notion as a default package). This strict approach allows Go to keep its compilation rules and package resolution rules simple by favoring convention over configuration. Let us take a deep dive into the fundamentals of packages, their creation, use, and recommended practice.

Understanding the Go package

Before we dive into package creation and use, it is crucial to take a high-level view of the concept of packages to help steer the discussion later. A Go package is both a physical and a logical unit of code organization used to encapsulate related concepts that can be reused. By convention, a group of source files stored in the same directory are considered to be part of the same package. The following illustrates a simple directory tree, where each directory represents a package containing...