struct Square { private(set) var area = 0 var side: Int = 0 { didSet { area = side*side } } } public struct Square { public private(set) var area = 0 public var side: Int = 0 { didSet { area = side*side } } public init() {} }
友情链接: json在线解析 通晓查询 糯晒黄历 姓名打分