Go Programming Language for Dummies - Wei-Meng Lee

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Auteur(s) : Wei-Meng Lee

Editeur : Wiley

Langue : Anglais

Parution : 01/04/2021

Format : Moyen, de 350g à 1kg

Nombre de pages : 336

Expédition : 464

Dimensions : 23.3 x 18.6 x 2.0

ISBN : 9781119786191

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.?

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.?

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Biographie:

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.

Sommaire:

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 Go 113

Initializing a map with a map literal 115

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