json - Swift 3-JSON解析

Question

我是Swift的新手，正在学习基础知识。

我想问的是，按照如下所示的错误处理方式解析JSON是一种好习惯吗？

if  let email = data["Email"] as? String,
                let name = data["Name"] as? String,
                let surname = data["Surname"] as? String,
                let identityNumber = data["IdentityNumber"] as? String ?? nil,
                let regAddress = data["RegistrationAddress"] as? String,
                let regZipCode = data["RegistrationZipCode"] as? String,
                let phoneNumber = data["PhoneNumber"] as? String,
                let city = data["City"] as? String {

                let user = User(name: name, surname: surname, idNumber: identityNumber, regAddress: regAddress, regZipCode: regZipCode, phoneNumber: phoneNumber, city: city)
            }

任何帮助或答案表示赞赏。

Answer 1

有时它不会有任何问题，但是如果值或结果可能为零。因此在那时该应用将崩溃。