您好,登錄后才能下訂單哦!
詳解 swift3.0 可選綁定共用同一塊內(nèi)存空間的實(shí)例
示例代碼:
ljTempModel = UserModel.init(userName: "sww", userID: 12, phone: "123", email: "deew") ljTempModel?.ljArray.append("sww") print("可選綁定前:\(ljTempModel?.ljArray)") //可選綁定成功,然后賦值 if let modle : UserModel = ljTempModel{ modle.ljArray.append("123") print("可選綁定后:\(String(describing: ljTempModel?.ljArray))") print("\(modle.ljArray)可選綁定成功,然后賦值") //此處modle 和ljTempModel有相同的內(nèi)存地址空間,所以對(duì)modle添加“123”,就相當(dāng)于對(duì)ljTempModel添加“123”,實(shí)際打印結(jié)果也是如此 }else{ //綁定失敗 print("可選綁定失敗") }
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() } }
如有疑問(wèn)請(qǐng)留言或者到本站社區(qū)交流討論,感謝閱讀,希望能幫助到大家,謝謝大家對(duì)本站的支持!
免責(zé)聲明:本站發(fā)布的內(nèi)容(圖片、視頻和文字)以原創(chuàng)、轉(zhuǎn)載和分享為主,文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng),如果涉及侵權(quán)請(qǐng)聯(lián)系站長(zhǎng)郵箱:is@yisu.com進(jìn)行舉報(bào),并提供相關(guān)證據(jù),一經(jīng)查實(shí),將立刻刪除涉嫌侵權(quán)內(nèi)容。