How to Define a Protocol

Steps

1. Paste the code into a Swift file or playground.
2. Run it once to verify the output.
3. Adjust the inputs to match your use case.

Copy and paste

import Foundation

protocol Drivable {
    var maxSpeed: Int { get }
    func drive()
}

struct Car: Drivable {
    let maxSpeed: Int
    func drive() {
        print("Driving at (maxSpeed)")
    }
}

Notes

• Keep functions small and focused for reuse.
• Prefer safe APIs like optionals and guards.