swift3.0 可选绑定共用同一块内存空间

概述ljTempModel = UserModel.init(userName: "sww", userID: 12, phone: "123", email: "deew") ljTempModel?.ljArray.append("sww") print("可选绑定前:\(ljTempModel?.ljArray)") //可选绑定

       ljTempModel = usermodel.init(username: "sww",userID: 12,phone: "123",email: "deew")        ljTempModel?.ljArray.append("sww")        print("可选绑定前:\(ljTempModel?.ljArray)")                //可选绑定成功，然后赋值        if let modle : usermodel = ljTempModel{                        modle.ljArray.append("123")                        print("可选绑定后:\(String(describing: ljTempModel?.ljArray))")            print("\(modle.ljArray)可选绑定成功，然后赋值")           //此处modle 和ljTempModel有相同的内存地址空间，所以对modle添加“123”，就相当于对ljTempModel添加“123”，实际打印结果也是如此        }else{            //绑定失败            print("可选绑定失败")        }            }

import Foundationopen class usermodel : NSObject {    var username: String     ///< store user's name,optional    var userID: Int          ///< store user's ID    var phone: String?       ///< store user's telephone number    var email: String?       ///< store user's email    var responseData = NSMutableData()    var ljArray = Array<Any>()            // designated initializer    init(username: String,userID: Int,phone: String?,email: String?) {        self.username = username        self.userID = userID        self.phone = phone        self.email = email                super.init()    }}

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