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The Inheritance Curse

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NSObject

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isEqual: conformsToProtocol: hash isKindOfClass:

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code reuse

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code reuse through inheritance

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code reuse* through inheritance from

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UIResponder

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UIResponder UIView

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UIResponder UIView UIControl

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UIResponder UIView UIControl UIButton

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UIResponder UIView UIControl UIButton MyButton

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UIResponder UIView UIControl UIButton MyButton …

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class struct enum

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class struct enum

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class struct enum

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Bye bye! Sans les mains!

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UIKit

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UIKit Reference type

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UIKit Reference type Code reuse

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UIKit

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final UIKit

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Reference type

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final Reference type

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Code reuse

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composition generics protocol extensions Code reuse

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TL;DL

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TL;DL final class

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TL;DL final class || class

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@greg3z