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jamesrochabrun/Weird.swift

Created July 19, 2020 18:09
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Weird.swift
import UIKit
class Vc: UIViewController {
var top: CGFloat? { 8 }
}
let viewController = Vc()
let a: CGFloat = 1.0
let b: CGFloat = 2.0
let result = (viewController as? Vc)?.top ?? a < b ? 10 : 15
print(result) // 15
print((viewController as? Vc)!.top ?? a < b) // flase
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