Initializationofimmutablevalue'textfieldInt'wasneverused;considerreplacingwithassignmentto'_'orremovingitandtextfield2Int我收到两次关于textfieldInt的警告这是我所有的代码:classViewController:UIViewController{@IBOutletweakvartextField1:UITextField!@IBOutletweakvartextField2:UITextField!@IBOutletweakvaroutput:UILabe