struct Dog {

  let name: String
  var breed: String
  var age: Int

  /** Get the dog details */
  func myDogDetail() -> String {
    return ("\(self.name) belongs to \(self.breed) and \(self.age)")
  }

}

class Dog {

  let name: String
  var breed: String
  var age: Int

  init(name: String, breed: String, age: Int) {
    self.name = name
    self.breed = breed
    self.age = age
  }

  /** Get the dog details */
  func myDogDetail() -> String {
    return ("\(self.name) belongs to \(self.breed) and \(self.age)")
  }

}