I have commented saveContext part still it gets saved in coredata and is displaying the saved data. It checks for email validation but saves anyways

Question

 let email  = capgEmailTextField.text
 func isEmailValid(str :String) -> Bool {
      let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z]+\\.[A-Za-z]{2,4}"
      let testMail = NSPredicate(format : "SELF MATCHES %@", emailRegEx)
      return testMail.evaluate(with : str)
            }
            
          
  if !isEmailValid(str: email!){
           
     print("Email is not valid")
                
     let alert = UIAlertController(title: "Note", message: "Email is not valid", preferredStyle: .alert)
    alert.addAction(UIAlertAction(title: "Okay", style: .cancel, handler: nil))
    present(alert, animated: true, completion: nil)
    }
  else if isEmailValid(str: email!){
     print("Emailvalid so m saving")
   do{
   //  AppDelegate.shared().saveContext()
       let alert = UIAlertController(title: "Note", message: "Details submitted", preferredStyle: .alert)
 alert.addAction(UIAlertAction(title: "OK", style: .cancel, handler: nil))
    present(alert, animated: true, completion: nil)
                    }

It enters the if statement and checks for the condition but saves anyways . Doesn't not enter else statement. But when save context was commented it got saved so I don't know how its getting saved