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iOS Intermediate Swift Extensions and Protocols Protocol Extensions

Posted by Derrick Hoff
Derrick Hoff
9,385 Points

Need help with protocol extensions

I don't know whats wrong with th?

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

// Enter your code below

extension Calculator {
    func square(value: Double) -> Double {
        return value * value
    }
}

1 Answer

Jeff McDivitt
Jeff McDivitt
23,970 Points
Jeff McDivitt
Jeff McDivitt
23,970 Points

Do nto change anything with the original function, you removed the underscore from both an that is incorrect

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

// Enter your code below

extension Calculator {
     func square(_ value: Double) -> Double {
     return value * value
  }

}