Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialAyo Omotosho
4,855 PointsA lil help here pls
In the editor, you've been provided with a protocol, Calculator, 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 Calculator {
func square(_ value: Double) -> Double
}
// Enter your code below
extension Calculator {
var value: Double {
return value * value
}
}
1 Answer
Christian Mangeng
15,970 PointsHi Ayo,
the question asks you to implement a default version of "square" in the extension, such that it outputs the square of value. You can copy/paste the method (the function) from the Calculator protocol into the extension and modify it such that it does so. You alraedy have the correct return line in your code.
Ayo Omotosho
4,855 PointsAyo Omotosho
4,855 PointsI see! Got it now! Thanks alot.