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 Foundation open 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() }
}