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iOS Intermediate Swift Extensions and Protocols Protocol Extensions

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

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
  }

}