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RAJ PATEL
4,282 Pointsoveriding methods
how to work this out?
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
1 Answer
Tobias Helmrich
31,602 PointsHey Raj,
first you have to create a class called Doctor which should inherit from Person. You can do so by writing a colon and the name of the class the new class should inherit from.
After that you have to override the existing getFullName function by writing the keyword override in front of it. You should change the function so it returns "Dr." followed by the last name instead of returning the first name and last name like the function would normally do.
Lastly you have to create an instance of the Doctor class and assign it to the someDoctor constant.
Like so:
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)"
}
}
let someDoctor = Doctor(firstName: "Sam", lastName: "Smith")
I hope that helps, if you have further questions feel free to ask! :)