Why structs are preferred in Swift - See It in Action

Why structs are preferred in Swift

📖 Scenario: Imagine you are building a simple app to keep track of books in a library. You want to store information about each book, like its title and author. You need to decide whether to use a struct or a class in Swift to represent each book.

🎯 Goal: Learn why Swift prefers structs over classes for many tasks by creating a simple struct to represent books and seeing how it works.

📋 What You'll Learn

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

Create a variable called myBook and assign it a Book instance with title "Swift Basics" and author "Jane Doe".

Create a copy of myBook called copiedBook and change its title to "Advanced Swift".

Print both myBook and copiedBook titles to show they are different.

💡 Why This Matters

🌍 Real World

Apps often store data like user profiles, settings, or items using structs for safety and speed.

💼 Career

Understanding when to use structs helps you write better Swift code, a key skill for iOS development jobs.

1

Create the Book struct

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

Swift

// Define the Book struct with title and author properties
// Your code here

Need a hint?

Use the struct keyword and define two String properties inside.

2

Create a Book instance

Create a variable called myBook and assign it a Book instance with title "Swift Basics" and author "Jane Doe".

Swift

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

// Create myBook instance here
// Your code here

Need a hint?

Use the struct's memberwise initializer to create myBook.

3

Copy and modify the Book instance

Create a copy of myBook called copiedBook and change its title to "Advanced Swift".

Swift

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

var myBook = Book(title: "Swift Basics", author: "Jane Doe")

// Create copiedBook as a copy of myBook and change title
// Your code here

Need a hint?

Assign myBook to copiedBook and then change the title property.

4

Print both book titles

Print the titles of myBook and copiedBook to show they are different.

Swift

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

var myBook = Book(title: "Swift Basics", author: "Jane Doe")

var copiedBook = myBook
copiedBook.title = "Advanced Swift"

// Print titles of myBook and copiedBook
// Your code here

Need a hint?

Use print() to show the titles of both books.