How to catch multiple exceptions in one line? (in the “except” block)

From Python Documentation: An except clause may name multiple exceptions as a parenthesized tuple, for example except (IDontLikeYouException, YouAreBeingMeanException) as e: pass Or, for Python 2 only: except (IDontLikeYouException, YouAreBeingMeanException), e: pass Separating the exception from the variable with a comma will still work in Python 2.6 and 2.7, but is now deprecated and does … Read more

What to do of exceptions when implementing java.lang.Iterator

You should rethrow exception as custom runtime exception, not generic one, for instance SomethingBadRuntimeException. Also, you can try exception tunneling. And I’m assured that forcing client to deal with exceptions by making them checked is a bad practice. It just pollutes your code or forces to wrap exceptions with runtime ones or force to process … Read more

UIPopoverPresentationController should have a non-nil sourceView or barButtonItem set before the presentation occurs on iOS 9

You can create a popover presentation controller like this also and it may work – (IBAction)showPopup:(UIButton *)sender { ViewController *contentViewController = [[ViewController alloc] init]; contentViewController.preferredContentSize = CGSizeMake(200, 200); contentViewController.modalPresentationStyle = UIModalPresentationPopover; UIPopoverPresentationController *popoverpresentationController = contentViewController.popoverPresentationController; popoverpresentationController.delegate = self; popoverpresentationController.permittedArrowDirections = UIPopoverArrowDirectionUp; popoverpresentationController.sourceRect = sender.bounds; popoverpresentationController.sourceView = sender; [self presentViewController:contentViewController animated: YES completion: nil]; }

What does `at ReturnAddress` mean in Delphi?

ReturnAddress is the address to which VerifyWrite would have returned when finished. Raise Exception.Create… at ReturnAddress means that when the exception dialog is displayed, it would indicate the address of the exception as being at ReturnAddress. In other words, the exception message would read Exception <whatever> raised at <ReturnAddress>: <Exception Message>. Here is an excerpt … Read more

How to design exception “types” in C++ [closed]

The C++ standard library’s exception hierarchy is IMHO pretty arbitrary and meaningless. For example, it would probably just create problems if anyone started actually using e.g. std::logic_error instead of terminating when it’s clear that the program has a Very Nasty Bug™. For as the standard puts it, “The distinguishing characteristic of logic errors is that … Read more