runkaiz

// If you are not familiar with Swift, the Foundation framework is the basic support structure (hence the name Foundation) that allows us to do a lot of things in Swift.
import Foundation

enum sexType {
    case female
    case male
}

class Person: Hashable {
    

runkaiz

// If you are not familiar with Swift, the Foundation framework is the basic support structure (hence the name Foundation) that allows us to do a lot of things in Swift.
import Foundation
class Person {
// Here we can list out the properties we are going to store about a person.
// We would want some value to be optional just in case when we want to save an incomplete profile.
var name: String?
// I made the birthday value as a string so it is flexible to convert and print.
var birthday: String?
// This is going to be changed since it is not a numerical value.
var sex: String?

runkaiz

class Person: Hashable {
  // … the rest of the code remains the same.
  // We want to make sure the Person object can be used as a key in a dictionary. The Unique Identifier is used here to help with that.
  static func == (lhs: Person, rhs: Person) -> Bool {
    // Here we are using the unique identifier to generate hash.
    return lhs.uniId == rhs.uniId
  }
  func hash(into hasher: inout Hasher) {
    hasher.combine(self.uniId)
  }

runkaiz

init(name: String?, birthday: String?, sex: String?, relatives: [Person:String]?, uniId: String) {
  self.name = name
  self.birthday = birthday
  self.sex = sex
  self.relatives = relatives
  self.uniId = uniId
}

runkaiz

let John = Person(name: "John", birthday: "03/02/1985", sex: "Female", relatives: nil, uniId: "John3srd")

runkaiz

let James = Person(name: "James", birthday: "06/22/2009", sex: "Male", relatives: [John:"Parent"], uniId: "James1st")

runkaiz

func addRelative(_ person: Person, relation: String) {
  self.relatives?[person] = relation
}

runkaiz

John.addRelative(James, relation: "child")

runkaiz

let John = Person(name: "John", birthday: "03/02/1985", sex: "Femle", relatives: nil, uniId: "John3srd")

runkaiz

enum sexType {
  case female
  case male
}