Although originally designed by Google for the kinds of problems Google works on—large, distributed network applications—Go is now a general-purpose programming language useful in a wide variety of software domains. Many companies have started using Go because of its simplicity, ease of use, performance, low barrier of entry, and powerful tooling.
This book was written to help new programmers learn Go. Although there is an abundance of technical resources available for Go, most are geared toward experienced engineers. My goal here is to provide a more gentle introduction to the language.
This book is written for relatively inexperienced programmers who know nothing about Go. Although not exhaustive, it does cover all of the basics, and should leave you well positioned to tackle the more advanced material available on the language. The book also covers rudimentary programming skills via the exercises at the end of each chapter.
This book is organized as follows:
Chapter 10 introduces concurrency
For best results, the book should be read in order, as each chapter builds on the concepts covered in the preceding chapters. Each chapter ends with a set of exercises, and it’s important to actually complete them—it’s by solving problems like these that you learn to program. In particular, typing out the examples (and not just reading them) can help significantly.
The following typographical conventions are used in this book:
Indicates new terms, URLs, email addresses, filenames, and file extensions.
Used for program listings, as well as within paragraphs to refer to program elements such as variable or function names, databases, data types, environment variables, statements, and keywords.
Constant width bold
Shows commands or other text that should be typed literally by the user.
Constant width italic
Shows text that should be replaced with user-supplied values or by values determined by context.
This book is here to help you get your job done. In general, if example code is offered with this book, you may use it in your programs and documentation. You do not need to contact us for permission unless you’re reproducing a significant portion of the code. For example, writing a program that uses several chunks of code from this book does not require permission. Selling or distributing a CD-ROM of examples from O’Reilly books does require permission. Answering a question by citing this book and quoting example code does not require permission. Incorporating a significant amount of example code from this book into your product’s documentation does require permission.
We appreciate, but do not require, attribution. An attribution usually includes the title, author, publisher, and ISBN. For example: “Introducing Go by Caleb Doxsey (O’Reilly). Copyright 2016 Caleb Doxsey, 978-1-4919-4195-9.”
If you feel your use of code examples falls outside fair use or the permission given above, feel free to contact us at firstname.lastname@example.org.
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