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iOS Object-Oriented Swift Value vs Reference Types Final Exam - Solution

Andy Warr
Andy Warr
2,417 Points
Posted by Andy Warr
Andy Warr
2,417 Points

sqrt not working for me in Xcode?

I got through this final exam just fine, except Xcode is returning a "Use of unresolved identifier 'sqrt'" error in my set method.

I believe I used the correct syntax:

set { sideLength = sqrt(newValue) }

I can also use any other operators to come up with a different answer for the sideLength, which of course does not return the correct value, but the code works. Everything else in my code checks out with the solution video.

Anyone else seen this?

2 Answers

Andy Warr
Andy Warr
2,417 Points
Andy Warr
Andy Warr
2,417 Points

Ah, never mind. I had accidentally deleted the

import UIKit

statement from the top of the playground. Will leave this up in case anyone else has this problem, unless the mods see fit to take it down.

Jarrett Young
Jarrett Young
12,635 Points
Jarrett Young
Jarrett Young
12,635 Points

I'm getting the exact same error message, and I have the import UIKit statement at the top.