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iOS Intermediate Swift Extensions and Protocols Protocol Extensions

Ayo Omotosho
Ayo Omotosho
4,855 Points
Posted by Ayo Omotosho
Ayo Omotosho
4,855 Points

A lil help here pls

In the editor, you've been provided with a protocol, Calculator, that contains a single requirement - a method that computes the square of a value. Your task is to provide a default implementation for the method through a protocol extension.

protocols.swift 
protocol Calculator {
  func square(_ value: Double) -> Double
}

// Enter your code below

extension Calculator {
   var value: Double {
    return value * value
  }
}

1 Answer

Christian Mangeng
Christian Mangeng
15,970 Points
Christian Mangeng
Christian Mangeng
15,970 Points

Hi Ayo,

the question asks you to implement a default version of "square" in the extension, such that it outputs the square of value. You can copy/paste the method (the function) from the Calculator protocol into the extension and modify it such that it does so. You alraedy have the correct return line in your code.

Ayo Omotosho
Ayo Omotosho
4,855 Points
Ayo Omotosho
Ayo Omotosho
4,855 Points

I see! Got it now! Thanks alot.