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Ready, set, program with Go!
Now is the perfect time to learn the Go Programming Language. It's one of the most in-demand languages among tech recruiters and developers love its simplicity and power. Go Programming Language For Dummies is an easy way to add this top job skill to your toolkit. Written for novice and experienced coders alike, this book traverses basic syntax, writing functions, organizing data, building packages, and interfacing with APIs.
Go--or GoLang, as it's also known--has proven to be a strong choice for developers creating applications for the cloud-based world we live in. This book will put you on the path to using the language that's created some of today's leading web applications, so you can steer your career where you want to Go!
Learn how Go works and start writing programs and modules
Install and implement the most powerful third-party Go packages
Use Go in conjunction with web services and MySQL databases
Keep your codebase organized and use Go to structure data
With this book, you can join the growing numbers of developers using Go to create 21st century solutions. Step inside to take start writing code that puts data in users' hands.
Auteur
Wei-Meng Lee is founder of Developer Learning Solutions, specializing in hands-on technology training. His name regularly appears in publications like DevX.com, MobiForge.com, and CODE Magazine. He is also the author of SwiftUI For Dummies, Beginning Swift Programming, Python Machine Learning, and Learning WatchKit Programming.
Texte du rabat
Get going with one of today's top languages!
This book walks with you as you take your first steps in the fast-growing coding language, Go. You'll work through all the basics, and then you'll build job-ready skills for making applications that work in the cloud! Go is great at scooping up data from around the web and putting it into users' hands. With this book at your side you'll become adept at accessing, structuring, and serving data by writing applications that are easy to maintain and understand. Go is in high demandthis primer will put it on your resume.
Inside. . .
Résumé
Ready, set, program with Go!
Now is the perfect time to learn the Go Programming Language. It's one of the most in-demand languages among tech recruiters and developers love its simplicity and power. Go Programming Language For Dummies is an easy way to add this top job skill to your toolkit. Written for novice and experienced coders alike, this book traverses basic syntax, writing functions, organizing data, building packages, and interfacing with APIs.
Goor GoLang, as it's also knownhas proven to be a strong choice for developers creating applications for the cloud-based world we live in. This book will put you on the path to using the language that's created some of today's leading web applications, so you can steer your career where you want to Go!
Contenu
Introduction 1
About This Book 1
Foolish Assumptions 2
Icons Used in This Book 2
Beyond the Book 3
Where to Go from Here 3
Part 1: Getting Started with Go 5
Chapter 1: Hello, Go! 7
Seeing What Learning Go Can Do for You 8
Installing Go on Your Machine 9
macOS 10
Windows 11
Using an Integrated Development Environment with Go 12
Writing Your First Go Program 14
Compiling and running the program 15
Understanding how a Go program works 17
Making sense of the Go file structure 18
Compiling for multiple operating systems 19
Comparing Go with Other Languages 21
Syntax 21
Compilation 22
Concurrency 22
Library support 22
Chapter 2: Working with Different Data Types 23
Declaring Always-Changing Variables 24
Using the var keyword: Type-inferred variables 24
Specifying the data type: Explicitly typed variables 25
Using the short variable declaration operator 26
Declaring Never-Changing Constants 27
Removing Unused Variables 27
Dealing with Strings 29
Performing Type Conversions 30
Discovering the type of a variable 31
Converting a variable's type 32
Interpolating strings 34
Chapter 3: Making Decisions 37
Using If/Else Statements to Make Decisions 37
Laying the foundation for the if/else statement: Logical and comparison operators 38
Using the if/else statement 40
Short-circuiting: Evaluating conditions in Go 42
When You Have Too Many Conditions: Using the Switch Statement 46
Switching with fall-throughs 47
Matching multiple cases 48
Switching without condition 48
Chapter 4: Over and Over and Over: Using Loops 51
Performing Loops Using the for Statement 51
Iterating over a Range of Values 56
Iterating through arrays/slices 56
Iterating through a string 58
Using Labels with the for Loop 59
Chapter 5: Grouping Code into Functions 65
Defining a Function 65
Defining functions with parameters 66
Defining functions with multiple parameters 68
Passing arguments by value and by pointer 68
Returning values from functions 71
Naming return values 72
Working with variadic functions 72
Using Anonymous Functions 73
Declaring an anonymous function 73
Implementing closure using anonymous functions 74
Implementing the filter() function using closure 76
Part 2: Working with Data Structures 79
Chapter 6: Slicing and Dicing Using Arrays and Slices 81
Arming Yourself to Use Arrays 81
Declaring an array 82
Initializing an array 83
Working with multidimensional arrays 83
Sleuthing Out the Secrets of Slices 86
Creating an empty slice 86
Creating and initializing a slice 88
Appending to a slice 88
Slicing and Ranging 92
Extracting part of an array or slice 92
Iterating through a slice 95
Making copies of an array or slice 95
Inserting an item into a slice 97
Removing an item from a slice 99
Chapter 7: Defining the Blueprints of Your Data Using Structs 101
Defining Structs for a Collection of Items 101
Creating a Go Struct 104
Making a Copy of a Struct 105
Defining Methods in Structs 107
Comparing Structs 110
Chapter 8: Establishing Relationships Using Maps 113 Creating Maps in...