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iOS Object-Oriented Swift Class Inheritance Overriding Methods

Richard Pitts
PLUS
Richard Pitts
Courses Plus Student 1,243 Points
Posted by Richard Pitts
Richard Pitts
Courses Plus Student 1,243 Points

Not sure what to do here...

Not sure what to do here...

objects.swift 
class Person {
  let firstName: String
  let lastName: String 

  init(firstName: String, lastName: String) {
    self.firstName = firstName
    self.lastName = lastName
  }

  func fullName() -> String {
    return "\(firstName) \(lastName)"
  }
}

// Enter your code below

class Doctor: Person{
  let firstName = "John"
  let lastNAme = "Smith"

  override init(firstName: String, lastName: String) {
  override func fullname() -> String {
    return "\(Dr.) \(lastName)"
  }
}

let someDoctor = Doctor(firstName: "Richard", lastName: "Pitts")

1 Answer

doesitmatter
doesitmatter
12,885 Points
doesitmatter
doesitmatter
12,885 Points

You don't need to redefine first and lastname variables, these are inherited from the parent. You don't need to redefine the init method either, because there's nothing we need to change in the initialization of the class. all you need to do is override the fullName func.

I notice a lot of typing errors in your code like fullname instead of fullName.

It should be:

// Enter your code below

class Doctor: Person{
  override func fullName() -> String {
    return "Dr. \(lastName)"
  }
}

let someDoctor = Doctor(firstName: "John", lastName: "Smith")

Tell me if something isn't clear