var _image: UIImage? var image: UIImage? { get { return _image } set { _image = newValue } }
原文链接：https://www.f2er.com/swift/324669.html
var _image: UIImage? var image: UIImage? { get { return _image } set { _image = newValue } }
原文链接：https://www.f2er.com/swift/324669.html