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iOS Intermediate Swift Extensions and Protocols Protocol Extensions

Question not being accepted

I kept getting square protocol extension is not implemented correctly even those it is correct.

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

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

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

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

1 Answer

Deysha Rivera
Deysha Rivera
5,088 Points

You are not actually looking for the square root, you are trying to find the square. Your implementation should return value*value.

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