Comparing structs vs classes decision in Swift - Hands-On Comparison

Comparing structs vs classes decision

📖 Scenario: You are building a simple app to manage information about books in a library. You want to decide whether to use a struct or a class to represent each book.

🎯 Goal: Create a Swift program that defines a Book using a struct, then add a configuration to decide if the book is available, and finally print the book details. This will help you understand when to use structs versus classes.

📋 What You'll Learn

Create a struct named Book with properties title (String) and author (String)

Create a variable isAvailable of type Bool to indicate if the book is available

Create an instance of Book with title "Swift Programming" and author "Apple"

Print the book's title, author, and availability status

💡 Why This Matters

🌍 Real World

Structs are great for simple data containers like book info where you want copies to be independent.

💼 Career

Understanding structs vs classes is key in Swift development for writing efficient and safe code.

1

Create the Book struct

Create a struct called Book with two properties: title of type String and author of type String.

Swift

# Your code here

Need a hint?

Use the struct keyword and define two var properties inside.

2

Add availability status variable

Create a variable called isAvailable of type Bool and set it to true.

Swift

struct Book {
    var title: String
    var author: String
}

# Your code here

Need a hint?

Define a variable outside the struct to track availability.

3

Create a Book instance

Create a constant called myBook and assign it a Book instance with title set to "Swift Programming" and author set to "Apple".

Swift

struct Book {
    var title: String
    var author: String
}

var isAvailable: Bool = true

# Your code here

Need a hint?

Use the struct initializer with named parameters.

4

Print book details and availability

Print the book's title, author, and availability using print and an f-string style with \(myBook.title), \(myBook.author), and \(isAvailable).

Swift

struct Book {
    var title: String
    var author: String
}

var isAvailable: Bool = true

let myBook = Book(title: "Swift Programming", author: "Apple")

# Your code here

Need a hint?

Use print with string interpolation to show all details.