Answers for "Expression of type 'UIViewController?' is unused warning when pop view controller in swift 3.0"

Swift

0

Expression of type 'UIViewController?' is unused warning when pop view controller in swift 3.0

@IBAction func goBackToIntroView(_ sender: UIButton) {
     
        self.navigationController?.popViewController(animated: true)
    }
//  popViewController(animated:) returnsUIViewController?
// , and the compiler is giving that warning since you aren't capturing the value. The solution is to assign it to an underscore:
// Answer

_ = navigationController?.popViewController(animated: true)

Posted by: Guest on August-16-2020

Source

Code answers related to "Expression of type 'UIViewController?' is unused warning when pop view controller in swift 3.0"

Code answers related to "Swift"

Browse Popular Code Answers by Language

Python

Javascript

Whatever

Shell/Bash

CSS

Html

PHP

SQL

Java

C#