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iOS Intermediate Swift Extensions and Protocols Protocol Extensions

Dzmitry Matsiulka
.a{fill-rule:evenodd;}techdegree seal-36
Dzmitry Matsiulka
iOS Development with Swift Techdegree Graduate 11,150 Points

Bummer: Make sure you're providing a default implementation for square inside the protocol extension

It compiles in Xcode however doesn't pass the challenge

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

// Enter your code below
extension Calculator {
    func square(value: Double) -> Double {
        return value * value