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iOS Intermediate Swift Extensions and Protocols Protocol Extensions

David Aberg
David Aberg
6,951 Points

Why is my solution not accepted? This regards: Protocol extensions Challenge 1 of 1. I import Foundation and use sqrt

// Enter your code below import Foundation extension Calculator { func square(_ value: Double) -> Double { return sqrt(value) } }

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

// Enter your code below
import Foundation
extension Calculator {
    func square(_ value: Double) -> Double {
        return sqrt(value)
    }
}
Josh Gonet
Josh Gonet
5,602 Points

All of it looks spot on except for the last line.

Instead of returning "sqrt(value)", you need to return "value * value". Remember that you're squaring the value, not finding the square root of it.

Hope that helps!

1 Answer

David Aberg
David Aberg
6,951 Points

Acceptable answer. Thanks Josh!