Protocol-oriented architecture in iOS Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to declare a protocol named Drivable with a drive() method.

iOS Swift

protocol Drivable {
    func [1]()
}

Drag options to blanks, or click blank then click option'

Arun

Bstart

Cdrive

Dmove

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method name different from the protocol's intended method.

Forgetting parentheses after the method name.

The protocol requires a method named drive() to be implemented by conforming types.

2fill in blank

medium

Complete the code to make Car conform to the Drivable protocol by implementing the drive() method.

iOS Swift

struct Car: Drivable {
    func [1]() {
        print("Car is driving")
    }
}

Drag options to blanks, or click blank then click option'

Amove

Bdrive

Cstart

Drun

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different method name than the protocol requires.

Missing the method implementation.

The Car struct must implement the drive() method to conform to Drivable.

3fill in blank

hard

Fix the error in the protocol extension by completing the method name to provide a default implementation for drive().

iOS Swift

extension Drivable {
    func [1]() {
        print("Default driving behavior")
    }
}

Drag options to blanks, or click blank then click option'

Amove

Brun

Cstart

Ddrive

Attempts:

3 left

💡 Hint

Common Mistakes

Using a different method name in the extension.

Not matching the protocol method signature.

The protocol extension provides a default implementation for the drive() method.

4fill in blank

hard

Fill both blanks to declare a protocol Flyable with a method fly() and make Airplane conform to it.

iOS Swift

protocol [1] {
    func fly()
}

struct Airplane: [2] {
    func fly() {
        print("Airplane is flying")
    }
}

Drag options to blanks, or click blank then click option'

AFlyable

BDrivable

DRunnable

Attempts:

3 left

💡 Hint

Common Mistakes

Using different names for the protocol and conformance.

Forgetting to implement the required method.

The protocol is named Flyable and the struct Airplane conforms to it by implementing fly().

5fill in blank

hard

Fill all three blanks to create a protocol Vehicle with a property speed and a method move(), then make Bike conform to it.

iOS Swift

protocol [1] {
    var [2]: Int { get set }
    func [3]()
}

struct Bike: Vehicle {
    var speed: Int = 10
    func move() {
        print("Bike is moving at \(speed) km/h")
    }
}

Drag options to blanks, or click blank then click option'

AVehicle

Bspeed

Cmove

Ddrive

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong property or method names.

Not marking the property with { get set } in the protocol.

The protocol Vehicle requires a speed property and a move() method. Bike conforms by implementing both.