Golang Book Examples

1. Getting Started

• Introducing Go
• Installing Go
• Setting Up Your Environment
• Writing Your First Go Program: Hello World

2. Understanding Types

• What Is a Data Type?
• Differentiating Between Static and Dynamic Typing
• Implementing Booleans
• Understanding Numeric Types
• Checking the Type of a Variable
• Converting Between Types

3. Understanding Variables

• What Is a Variable?
• Declaring Shorthand Variables
• Understanding Variables and Zero Values
• Writing a Short Variable Declaration
• Styles of Variable Declaration

4. Using Functions in Go

• What Is a Function?
• Defining Variadic Functions
• Using Named Return Values
• Using Recursive Functions
• Passing Functions as Values

5. Using Control Flow

• Using the if Statement
• Using the else Statement
• Using the else if Statement
• Using Comparison Operators
• Using Arithmetic Operators
• Using Logical Operators
• Using the switch Statement
• Looping with the for Statement
• Using the defer Statement

6. Working with Arrays, Slices, Maps

• Working with Arrays
• Working with Slices
• Working with Maps

7. Using Structs and Pointers

• What Is a Struct
• Initializing a Struct
• Nesting Structs
• Creating Default Values for Structs
• Comparing Structs
• Understanding Public and Private Values
• Differentiating Between Point and Value References

8. Creating Methods And Interfaces

• Using Methods
• Creating Method Sets
• Working with Methods and Pointers
• Using Interfaces

9. Working with Strings

• Creating String Literals
• Understanding Rune Literals
• Concatenating Strings

10. Error Handling

• Handling Errors and Idiomatic Go
• Understanding the Error Type
• Creating Errors
• Formatting Errors
• Returning an Error from a Function
• Errors and Usability
• Don't panic

11. Working with Goroutines

• Understanding Concurrency
• Concurrency Versus Parallelism
• Understanding Concurrency Through a Web Browser
• Blocking and Non-Blocking Code
• Handling Concurrent Operations with Goroutines
• Using Goroutines to Manage Latency
• Defining Goroutines

12. Introducing Channels

• Using Channels
• Using Buffered Channels
• Blocking and Flow Control
• Using Channels as Function Arguments
• Employing the select Statement
• Quitting Channels

13. Packages

• Importing Packages
• Understanding Package Usage
• Using Third-Party Packages
• Installing a Third-Party Package
• Managing Third-Party Dependencies

14. Naming Conventions in Go

• Formatting Code in Go
• Using gofmt
• Configuring Text Editors
• Naming Conventions
• Using golint
• Using godoc
• Automating Workflow

15. Testing and Performance

• Testing: The Most Important Aspect of Software Development
• testing Package
• Running Table Tests
• Benchmarking in Go
• Providing Test Coverage

16. Debugging

• Logging
• Printing Data
• Using the fmt Package
• Using Delve
• Using gdb

17. Using Command Line Programs

• Operating with Inputs and Outputs
• Accessing Raw Command-Line Arguments
• Parsing Command-Line Flags
• Working with Types
• Customizing Help Text
• Creating Subcommands
• POSIX Compliance
• Installing and Sharing Command-Line Programs

18. Creating HTTP Servers

• Announcing Your Presence with the "Hello World" Web Server
• Examing Requests and Responses
• Working with Handler Functions
• Handling 404s
• Setting a Header
• Responding to Different Types of Requests
• Receiving Data from GET and POST Requests

19. Creating HTTP Clients with Go

• Understanding HTTP
• Making a GET Request
• Making a POST Request
• Gaining Further Control over HTTP Requests
• Debugging HTTP Requests
• Dealing With Timeouts

20. Working with JSON

• Introducing JSON
• Using JSON APIs
• Using JSON with Go
• Decoding JSON
• Mapping Data Types
• Working with JSON Received over HTTP

21. Working With files

• The Importance of Files
• Reading and Writing Files with the ioutil Package
• Writing to a File
• Listing a Directory
• Copying a File
• Deleting Files
• Using Files to Manage Configuration

22. Introducing Regular Expressions

• Defining Regular Expressions
• Getting Familiar with Regular Expression Syntax
• How To Validate Data Using Regular Expressions
• Using Regular Expressions for Validation
• Using Regular Expressions to Transform Data
• Parsing Data with Regular Expressions

23. Time

• Programming the Element of Time
• Putting Your Program to Sleep
• Setting a Timeout
• Using a Ticker
• Representing Time in a String format
• Working with Time structs
• Adding and Subtracting Time
• Comparing Different Time Structs

24. Deployment

• Understanding targets
• Reducing the Size of Binaries
• Using Docker
• Downling Binary Files
• Using go get
• Releasing Code with Package Managers

25. Creating a RESTful JSON API

• Managing Dependencies with dep
• Creating a HTTP Server with httprouter
• Scaffolding a REST API
• Testing HTTP Routes
• Serving JSON
• Adding Data Persistence

26. Creating a TCP Chat Server

• What is TCP?
• Using telnet
• Using the net Package
• Creating a Simple Chat Server
• Managing Client Connections
• Enabling Messaging Between Clients
• Preventing Echoes