ios-error-handling.md

All kinds of error handling

compileswift failed with a nonzero exit code

Xcode version: 11

Solution: Turn off Parallelize Build in the scheme settings.

Xcode 10 Error: Multiple commands produce

Solution: Set CoreData models Codegen to Manual/None.

https://stackoverflow.com/a/57763072

You must provide either a sourceView and sourceRect or a barButtonItem. If this information is not known when you present the alert controller, you may provide it in the UIPopoverPresentationControllerDelegate method -prepareForPopoverPresentation

if let popoverController = alertController.popoverPresentationController {
    popoverController.barButtonItem = sender
}
self.presentViewController(alertController, animated: true, completion: nil)

//or

if let popoverController = alertController.popoverPresentationController {
    popoverController.sourceView = sender
    popoverController.sourceRect = sender.bounds
}
self.presentViewController(alertController, animated: true, completion: nil)

https://stackoverflow.com/a/26040876