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iOS Protocols in Swift Creating Flexible Objects Using Protocols Protocol Inheritance

Dan Sabin
PLUS
Dan Sabin
Courses Plus Student 1,909 Points
Posted by Dan Sabin
Dan Sabin
Courses Plus Student 1,909 Points

It seems like the either the prompt or the check are not in sync for this question. Any idea on how to proceed

I've tried creating a gettable type, but the "error" says I need to make a function. I tried guessing what function they might be asking to see if the prompt would change and give me more information, no luck. Not sure how to proceed.

protocols.swift 
protocol Animal {
  var numberOfLegs: Int { get }
}

protocol Pet: Animal {
  let cuddlyName: String { get }
}

1 Answer

Charles Kenney
Charles Kenney
15,604 Points
Charles Kenney
Charles Kenney
15,604 Points

The problem is, you set your Pet protocol's gettable 'cuddlyName' property to a constant when it should be a variable. Your protocols should look like this:

protocol Animal {
  var numberOfLegs: Int { get }
}

protocol Pet: Animal {
  var cuddlyName: String { get }
}

So our struct, dog should look like this:

struct dog: Pet {
  var numberOfLegs: Int
  var cuddlyName: String
}

Hope this answers your question. -Charles