Home > Store

Go Programming Language, The

Go Programming Language, The

eBook (Watermarked)

  • Your Price: $25.59
  • List Price: $31.99
  • Includes EPUB, MOBI, and PDF
  • About eBook Formats
  • This eBook includes the following formats, accessible from your Account page after purchase:

    ePub EPUB The open industry format known for its reflowable content and usability on supported mobile devices.

    MOBI MOBI The eBook format compatible with the Amazon Kindle and Amazon Kindle applications.

    Adobe Reader PDF The popular standard, used most often with the free Adobe® Reader® software.

    This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.

Also available in other formats.

Register your product to gain access to bonus material or receive a coupon.


  • Copyright 2016
  • Dimensions: 7-3/8" x 9-1/8"
  • Edition: 1st
  • eBook (Watermarked)
  • ISBN-10: 0-13-419058-0
  • ISBN-13: 978-0-13-419058-7

The Go Programming Language is the authoritative resource for any programmer who wants to learn Go. It shows how to write clear and idiomatic Go to solve real-world problems. The book does not assume prior knowledge of Go nor experience with any specific language, so you’ll find it accessible whether you’re most comfortable with JavaScript, Ruby, Python, Java, or C++.

  • The first chapter is a tutorial on the basic concepts of Go, introduced through programs for file I/O and text processing, simple graphics, and web clients and servers.
  • Early chapters cover the structural elements of Go programs: syntax, control flow, data types, and the organization of a program into packages, files, and functions. The examples illustrate many packages from the standard library and show how to create new ones of your own. Later chapters explain the package mechanism in more detail, and how to build, test, and maintain projects using the go tool.
  • The chapters on methods and interfaces introduce Go’s unconventional approach to object-oriented programming, in which methods can be declared on any type and interfaces are implicitly satisfied. They explain the key principles of encapsulation, composition, and substitutability using realistic examples.
  • Two chapters on concurrency present in-depth approaches to this increasingly important topic. The first, which covers the basic mechanisms of goroutines and channels, illustrates the style known as communicating sequential processes for which Go is renowned. The second covers more traditional aspects of concurrency with shared variables. These chapters provide a solid foundation for programmers encountering concurrency for the first time.
  • The final two chapters explore lower-level features of Go. One covers the art of metaprogramming using reflection. The other shows how to use the unsafe package to step outside the type system for special situations, and how to use the cgo tool to create Go bindings for C libraries.

The book features hundreds of interesting and practical examples of well-written Go code that cover the whole language, its most important packages, and a wide range of applications. Each chapter has exercises to test your understanding and explore extensions and alternatives. Source code is freely available for download from http://gopl.io/ and may be conveniently fetched, built, and installed using the go get command.

Sample Content

Table of Contents

Preface  xi

Chapter 1: Tutorial 1

1.1 Hello, World 1

1.2 Command-Line Arguments 4

1.3 Finding Duplicate Lines 8

1.4 Animated GIFs 13

1.5 Fetching a URL 15

1.6 Fetching URLs Concurrently 17

1.7 A Web Server 19

1.8 Loose Ends 23

Chapter 2: Program Structure 27

2.1 Names 27

2.2 Declarations 28

2.3 Variables 30

2.4 Assignments 36

2.5 Type Declarations 39

2.6 Packages and Files 41

2.7 Scope 45

Chapter 3: Basic Data Types 51

3.1 Integers 51

3.2 Floating-Point Numbers 56

3.3 Complex Numbers 61

3.4 Booleans 63

3.5 Strings 64

3.6 Constants 75

Chapter 4: Composite Types 81

4.1 Arrays 81

4.2 Slices 84

4.3 Maps 93

4.4 Structs 99

4.5 JSON 107

4.6 Text and HTML Templates 113

Chapter 5: Functions 119

5.1 Function Declarations 119

5.2 Recursion 121

5.3 Multiple Return Values 124

5.4 Errors 127

5.5 Function Values 132

5.6 Anonymous Functions 135

5.7 Variadic Functions 142

5.8 Deferred Function Calls 143

5.9 Panic 148

5.10 Recover 151

Chapter 6:. Methods 155

6.1 Method Declarations 155

6.2 Methods with a Pointer Receiver 158

6.3 Composing Types by Struct Embedding 161

6.4 Method Values and Expressions 164

6.5 Example: Bit Vector Type 165

6.6 Encapsulation 168

Chapter 7: Interfaces 171

7.1 Interfaces as Contracts 171

7.2 Interface Types 174

7.3 Interface Satisfaction 175

7.4 Parsing Flags with flag.Value 179

7.5 Interface Values 181

7.6 Sorting with sort.Interface 186

7.7 The http.Handler Interface 191

7.8 The error Interface 196

7.9 Example: Expression Evaluator 197

7.10 Type Assertions 205

7.11 Discriminating Errors with Type Assertions 206

7.12 Querying Behaviors with Interface Type Assertions 208

7.13 Type Switches 210

7.14 Example: Token-Based XML Decoding 213

7.15 A Few Words of Advice 216

Chapter 8: Goroutines and Channels 217

8.1 Goroutines 217

8.2 Example: Concurrent Clock Server 219

8.3 Example: Concu rent Echo Server 222

8.4 Channels 225

8.5 Looping in Parallel 234

8.6 Example: Concurrent Web Crawler 239

8.7 Multiplexing with select 244

8.8 Example: Concurrent Directory Traversal 247

8.9 Cancellation 251

8.10 Example: Chat Server 253

Chapter 9: Concurrency with Shared Variables 257

9.1 Race Conditions 257

9.2 Mutual Exclusion: sync.Mutex 262

9.3 Read/Write Mutexes: sync.RWMutex 266

9.4 Memory Synchronization 267

9.5 Lazy Initialization: sync.Once 268

9.6 The Race Detector 271

9.7 Example: Concurrent Non-Blocking Cache 272

9.8 Goroutines and Threads 280

Chapter 10: Packages and the Go Tool 283

10.1 Introduction 283

10.2 Import Paths 284

10.3 The Package Declaration 285

10.4 Import Declarations 285

10.5 Blank Imports 286

10.6 Packages and Naming 289

10.7 The Go Tool 290

Chapter 11: Testing 301

11.1 The go test Tool 302

11.2 Test Functions 302

11.3 Coverage 318

11.4 Benchmark Functions 321

11.5 Profiling 323

11.6 Example Functions 326

Chapter 12: Reflection 329

12.1 Why Reflection? 329

12.2 reflect.Type and reflect.Value 330

12.3 Display, a Recursive Value Printer 333

12.4 Example: Encoding S-Expressions 338

12.5 Setting Variables with reflect.Value 341

12.6 Example: Decoding S-Expressions 344

12.7 Accessing Struct Field Tags 348

12.8 Displaying the Methods of a Type 351

12.9 A Word of Caution 352

Chapter 13: Low-Level Programming 353

13.1 unsafe.Sizeof, Alignof, and Offsetof 354

13.2 unsafe.Pointer 356

13.3 Example: Deep Equivalence 358

13.4 Calling C Code with cgo 361

13.5 Another Word of Caution 366

Index 367


Submit Errata

More Information

InformIT Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from InformIT and its family of brands. I can unsubscribe at any time.


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites, develop new products and services, conduct educational research and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by InformIT. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.informit.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020