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Arthur Sarin
4,032 Pointstask is to provide a default implementation for the method through a protocol extension.
please help me with this :\ In the editor, you've been provided with a protocol, Math, that contains a single requirement - a method that computes the square of a value. Your task is to provide a default implementation for the method through a protocol extension.
protocol Math {
func square(value: Double) -> Double
}
// Enter your code below
2 Answers
agreatdaytocode
24,757 PointsArthur,
Its asking that you are put the function into the extension. Second, we return value * value
extension Math {
func square(let value: Double) -> Double {
return value * value
}
}
Jeff Witop
Courses Plus Student 932 Pointsprotocol Calculator { func square(_ value: Double) -> Double }
// Enter your code below extension Calculator { func square(_ value: Double) -> Double { return value * value } }
Greg Kaleka
39,021 PointsGreg Kaleka
39,021 PointsWhat's the extra let for?
Arthur Sarin
4,032 PointsArthur Sarin
4,032 Pointsnot work..
Greg Kaleka
39,021 PointsGreg Kaleka
39,021 PointsHey Arthur,
It works fine - you just need to put this below the comment. If you replace the protocol, it won't work. You have to extend it separately!