粉色苏州晶体结构ios结构”和同类有什么区别？实用对比与选择建议,代码示例//UserModel.swiftclassUserModel{funcvalidateUser(username:String,password:String)->Bool{//用户验证逻辑}}//UserViewModel.swiftclassUserViewModel{privateletuserModel=UserModel()funcvalidateUser(username:String,password:String)->Bool{returnuserModel.validateUser(username:username,password:password)}funcloginUser(username:String,password:String){//登录逻辑}}//UserView.swiftclassUserView:UIView{privateletuserViewModel=UserViewModel()@IBOutletweakvarusernameTex