Raw values for enums in Swift - Mini Project: Build & Apply

Raw values for enums

📖 Scenario: Imagine you are creating a simple app that needs to represent different types of fruits with specific codes. You want to use Swift enums with raw values to assign each fruit a unique code.

🎯 Goal: Build a Swift program that defines an enum with raw values for fruits and prints the raw value of a selected fruit.

📋 What You'll Learn

Create an enum called Fruit with raw values of type String

Include these fruits with exact raw values: apple = "A01", banana = "B02", cherry = "C03"

Create a variable called selectedFruit and assign it the enum case .banana

Print the raw value of selectedFruit using print

💡 Why This Matters

🌍 Real World

Enums with raw values are useful for representing fixed sets of related values with associated codes, like product categories, error codes, or status flags.

💼 Career

Understanding enums with raw values is important for Swift developers working on iOS apps, as it helps organize data clearly and safely.

1

Create the Fruit enum with raw values

Create an enum called Fruit with raw values of type String. Add these cases with exact raw values: apple = "A01", banana = "B02", cherry = "C03".

Swift

# Your code here to create the Fruit enum with raw String raw values

Need a hint?

Use enum Fruit: String and assign raw values with =.

2

Create a variable for the selected fruit

Create a variable called selectedFruit and assign it the enum case .banana from the Fruit enum.

Swift

enum Fruit: String {
    case apple = "A01"
    case banana = "B02"
    case cherry = "C03"
}

# Your code here to create selectedFruit variable assigned to .banana

Need a hint?

Use var selectedFruit = Fruit.banana to assign the enum case.

3

Access the raw value of the selected fruit

Create a constant called fruitCode and assign it the raw value of selectedFruit using the rawValue property.

Swift

enum Fruit: String {
    case apple = "A01"
    case banana = "B02"
    case cherry = "C03"
}

var selectedFruit = Fruit.banana

# Your code here to create fruitCode constant with selectedFruit.rawValue

Need a hint?

Use let fruitCode = selectedFruit.rawValue to get the raw value string.

4

Print the raw value of the selected fruit

Use print to display the value of fruitCode.

Swift

enum Fruit: String {
    case apple = "A01"
    case banana = "B02"
    case cherry = "C03"
}

var selectedFruit = Fruit.banana

let fruitCode = selectedFruit.rawValue

# Your code here to print fruitCode

Need a hint?

Use print(fruitCode) to show the raw value.