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iOS Object-Oriented Swift 2.0 Class Inheritance Overriding Methods

shane reichefeld
PLUS
shane reichefeld
Courses Plus Student 2,232 Points

SubClass Whats wrong? and why

explanation

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

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

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

// Enter your code below
class Doctor: Person {
  override init(firstName: String, lastName: String) {
    self.firstName = "Dr."
    self.lastName = lastName
  }
}
let someDoctor: String = Doctor(Sam , lastName: Smith)

1 Answer

Steven Deutsch
Steven Deutsch
21,046 Points

Hey shane reichefeld,

You're close, but the challenge is asking you to override the getFullName() method and not the initializer of the Person class. This overriden version of the method will return "Dr. (lastName)" instead of its original "(firstName) (lastName)" implementation.

Let's take a look at this below:

class Person {
    let firstName: String
    let lastName: String

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

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

// Enter your code below

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

// When calling the initializer you need to provide the argument names
// Also make sure what you are passing in is what is required
// You need to be passing in two Strings here
let someDoctor = Doctor(firstName: "Sam", lastName: "Smith")
someDoctor.getFullName()

Good Luck