dog.swift

dog.swift

// Since we're iOS engineers,
// we might want to use a 
// light weight type like a struct
struct Dog {
  // A dog object needs an id for identification
  let uid: String 
  // And important for out hotel, we need to know the size.
  // We could use an integer, but that's not very easy to read.
  // A String is a bad idea because mistakes can easily occur.
  // That's why we want to use a dedicated enum.
  // Tell your interviewer, that type-safety is important to you.
  // Really hard to disagree.
  let size: DogSize
}

enum DogSize {
  case small, medium, large
}