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iOS Object-Oriented Swift Class Inheritance Overriding Methods

Posted by Tim Nunn
Tim Nunn
1,941 Points

Object-Oriented Swift - fullName() override

I see nothing wrong with my code. Works perfect in XCode. Any ideas?

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

}

let someDoctor = Doctor.init(firstName: "Sam", lastName: "Smith")

1 Answer

andren
andren
28,558 Points
andren
andren
28,558 Points

The string it produces is not the same as the one the challenge asks for. The challenge asks that the overridden method returns a string that contains "Dr." and the last name of the person, not the fullname.

Like this:

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

}

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

I also removed the interpolation around the word "Dr." since it is not needed, and removed the explicit call to init, as that method is called automatically when you call the Doctor class.