iOS DoggyService.swift


Exemple

import Foundation

typealias Result = ([Dog]) -> Void

class DoggyService {

    func deliverDoggies(_ result: @escaping Result) {
        
        let firstDoggy  = Dog(name: "Alfred", breed: Breed.labrador.rawValue, age: 1)
        let secondDoggy = Dog(name: "Vinny",  breed: Breed.doberman.rawValue, age: 5)
        let thirdDoggy  = Dog(name: "Lucky",  breed: Breed.labrador.rawValue, age: 3)

        let delay = DispatchTime.now() + Double(Int64(Double(NSEC_PER_SEC)*2)) / Double(NSEC_PER_SEC)
        
        DispatchQueue.main.asyncAfter(deadline: delay) {
            result([firstDoggy,
                    secondDoggy,
                    thirdDoggy])
        }
    }
}