Swift 3 Create Custom Segue

gistfile1.html

In swift3 create one segue -add identifier -add and set in segue(storyboard) custom storyboard class from cocoatouch file -In custom class override perform()

'override func perform() {
    let sourceViewController = self.source
    let destinationController = self.destination
    let navigationController = sourceViewController.navigationController
    // Pop to root view controller (not animated) before pushing
    if self.identifier == "your identifier"{
    navigationController?.popViewController(animated: false)
    navigationController?.pushViewController(destinationController, animated: true)
    }
    }'
-You also have to override one method in your source viewcontroller

 ' override func shouldPerformSegue(withIdentifier identifier: String, sender: Any?) -> Bool {
    return false
}'