importing UIKit or CoreGraphics?

Question

I've got a simple file that I want to keep low profile here. If I can lower build times I will. Between UIKit and CoreGraphics, which is smaller / more compact and practical for my situation?

import CoreGraphics // can be replaced with import UIKit

let π = CGFloat(M_PI)
let twoπ = 2 * π

Answer 1

CoreGraphics is the more compact one. UIKit itself relies on CoreGraphics. You don't need to import UIKit unless you need to use something defined in it.