gnou

public struct TextSize {
    
    fileprivate struct CacheEntry: Hashable {
        let text: String
        let font: UIFont
        let width: CGFloat
        let insets: UIEdgeInsets
        
        fileprivate var hashValue: Int {
            return text.hashValue ^ Int(width) ^ Int(insets.top) ^ Int(insets.left) ^ Int(insets.bottom) ^ Int(insets.right)