Go in 24 Hours, Sams Teach Yourself: Next Generation Systems Programming with Golang

by George Ornbo

Overview

In just 24 sessions of one hour or less, Sams Teach Yourself Go in 24 Hours will help new and experienced programmers build software that’s simpler, more reliable, and far more scalable. This book’s straightforward, step-by-step approach guides you from setting up your environment through testing and deploying powerful solutions. Using practical examples, expert Go developer George Ornbo walks you through Go’s fundamental constructs, demonstrates its breakthrough features for concurrent and network programming, and illuminates Go’s powerful new idioms. Every lesson builds on what you’ve already learned, giving you a rock-solid foundation for real-world success.

Step-by-step instructions carefully walk you through the most common Go programming tasks and techniques

Quizzes and exercises help you test your knowledge and stretch your skills

Practical, hands-on examples show you how to apply what you learn

Notes and Tips point out shortcuts, solutions, and problems to avoid

Two bonus chapters available online: Hour 25, “Creating a RESTful JSON API,” and Hour 26 “Creating a TCP Chat Server”

Learn how to...

· Get productive quickly with Go development tools and web servers

· Master core features, including strings, functions, structs, and methods

· Work with types, variables, functions, and control structures

· Make the most of Go’s arrays, slices, and maps

· Write powerful concurrent software with Goroutines and channels

· Handle program errors smoothly

· Promote code reuse with packages

· Master Go’s unique idioms for highly effective coding

· Use regular expressions and time/date functions

· Test and benchmark Go code

· Write basic command-line programs, HTTP servers, and HTTP clients

· Efficiently move Go code into production

· Build basic TCP chat servers and JSON APIs

Register your book at informit.com/register for convenient access to the two bonus chapters online, downloads, updates, and/or corrections as they become available.

Product Details

ISBN-13:	9780672338038
Publisher:	Pearson Education
Publication date:	12/08/2017
Series:	Sams Teach Yourself
Pages:	368
Sales rank:	683,075
Product dimensions:	7.00(w) x 9.00(h) x 1.00(d)

About the Author

George Ornbo is a software engineer, blogger, and author with 14 years of experience delivering software to startups and enterprise clients. He has experience with a broad range of programming languages, UNIX, and the underlying protocols of the web. He is currently working at a Blockchain startup in London.

Table of Contents

Introduction

Hour 1: Getting Started

Introducing Go

Installing Go

Setting Up Your Environment

Writing Your First Go Program: Hello World

Summary

Q&A

Workshop

Exercises

Hour 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

Summary

Q&A

Workshop

Exercises

Hour 3: Understanding Variables

What Is a Variable?

Declaring Shorthand Variables

Understanding Variables and Zero Values

Writing a Short Variable Declaration

Styles of Variable Declaration

Using Variable Scope

Using Pointers

Declaring Variables with Constants

Summary

Q&A

Workshop

Exercises

Hour 4: Using Functions in Go

What Is a Function?

Defining Variadic Functions

Using Named Return Values

Using Recursive Functions

Passing Functions as Values

Summary

Q&A

Workshop

Exercises

Hour 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

Summary

Q&A

Workshop

Exercises

Hour 6: Working with Arrays, Slices, and Maps

Working with Arrays

Working with Slices

Working with Maps

Summary

Q&A

Workshop

Exercises

Hour 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 Pointer and Value References

Summary

Q&A

Workshop

Exercises

Hour 8: Creating Methods and Interfaces

Using Methods

Creating Method Sets

Working with Methods and Pointers

Using Interfaces

Summary

Q&A

Workshop

Exercises

Hour 9: Working with Strings

Creating String Literals

Understanding Rune Literals

Concatenating Strings

Summary

Q&A

Workshop

Exercises

Hour 10: Handling Errors

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

Summary

Q&A

Workshop

Exercises

Hour 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

Summary

Q&A

Workshop

Exercises

Hour 12: Introducing Channels

Using Channels

Using Buffered Channels

Blocking and Flow Control

Using Channels as Function Arguments

Employing the select Statement

Quitting Channels

Summary

Q&A

Workshop

Exercises

Hour 13: Using Packages for Code Reuse

Importing Packages

Understanding Package Usage

Using Third-Party Packages

Installing a Third-Party Package

Managing Third-Party Dependencies

Summary

Q&A

Workshop

Exercises

Hour 14: Naming Conventions in Go

Formatting Code in Go

Using gofmt

Configuring Text Editors

Naming Conventions

Using golint

Using godoc

Automating Workflow

Summary

Q&A

Workshop

Exercises

Hour 15: Testing and Performance

Testing: The Most Important Aspect of Software Development

testing Package

Running Table Tests

Benchmarking in Go

Providing Test Coverage

Summary

Q&A

Workshop

Exercises

Hour 16: Debugging

Logging

Printing Data

Using the fmt Package

Using Delve

Using gdb

Summary

Q&A

Workshop

Exercises

Hour 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

Summary

Q&A

Workshop

Exercises

Hour 18: Creating HTTP Servers

Announcing Your Presence with the “Hello World” Web Server

Examining 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

Summary

Q&A

Workshop

Exercises

Hour 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

Summary

Q&A

Workshop

Exercises

Hour 20: Working with JSON

Introducing JSON

Using JSON APIs

Using JSON with Go

Decoding JSON

Mapping Data Types

Working with JSON Received over HTTP

Summary

Q&A

Workshop

Exercises

Hour 21: Working with Files

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

Summary

Q&A

Workshop

Exercises

Hour 22: Introducing Regular Expressions

Defining Regular Expressions

Getting Familiar with Regular Expression Syntax

Using Regular Expressions for Validation

Using Regular Expressions to Transform Data

Parsing Data with Regular Expressions

Summary

Q&A

Workshop

Exercises

Hour 23: Programming Time in Go

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

Summary

Q&A

Workshop

Exercises

Hour 24: Deploying Go Code

Understanding Targets

Reducing the Size of Binaries

Using Docker

Downloading Binary Files

Using go get

Releasing Code with Package Managers

Summary

Q&A

Workshop

Exercises

Extra Online Content

Hour 25: Creating a RESTful JSON API

Hour 26: Creating a TCP Chat Server

9780672338038 TOC 11/17/2017