Read it and weep! I figured it out. If you don’t throw from the handler, the handler will just continue and so will the exception. The magic happens when you throw you own exception and handle that. #include “stdafx.h” #include <stdio.h> #include <stdlib.h> #include <signal.h> #include <tchar.h> void SignalHandler(int signal) { printf(“Signal %d”,signal); throw “!Access … Read more
It’s not an exception. It’s an error which is determined at hardware level and is returned back to the operating system, which then notifies your program in some OS-specific way about it (like, by killing the process). I believe that in such case what happens is not an exception but a signal. If it’s the … Read more
You could return an Integer instead of an int, returning null on parse failure. It’s a shame Java doesn’t provide a way of doing this without there being an exception thrown internally though – you can hide the exception (by catching it and returning null), but it could still be a performance issue if you’re … Read more
Because when you catch exception you’re supposed to handle it properly. And you cannot expect to handle all kind of exceptions in your code. Also when you catch all exceptions, you may get an exception that cannot deal with and prevent code that is upper in the stack to handle it properly. The general principal … Read more
You must catch the exception before it escapes the lambda: s = s.filter(a -> { try { return a.isActive(); } catch (IOException e) { throw new UncheckedIOException(e); } }); Consider the fact that the lambda isn’t evaluated at the place you write it, but at some completely unrelated place, within a JDK class. So that … Read more
Here’s a complete small example that also includes a few other tricks: import sys import logging logger = logging.getLogger(__name__) handler = logging.StreamHandler(stream=sys.stdout) logger.addHandler(handler) def handle_exception(exc_type, exc_value, exc_traceback): if issubclass(exc_type, KeyboardInterrupt): sys.__excepthook__(exc_type, exc_value, exc_traceback) return logger.error(“Uncaught exception”, exc_info=(exc_type, exc_value, exc_traceback)) sys.excepthook = handle_exception if __name__ == “__main__”: raise RuntimeError(“Test unhandled”) Ignore KeyboardInterrupt so a console python … Read more
In order to gain control on the level that you want, you should probably probe one directory at a time, instead of a whole tree. The following method populates the given IList<string> with all files found in the directory tree, except those where the user doesn’t have access: // using System.Linq private static void AddFiles(string … Read more
You can just do the following: var connection = System.Configuration.ConfigurationManager. ConnectionStrings[“Test”].ConnectionString; Your assembly also needs a reference to System.Configuration.dll
FWIF, I find the error handling idiom you gave in the question’s example to be more readable and easier to understand than any of the alternatives given in the answers so far. While goto is a bad idea in general, it can be useful for error handling when done in a simple and uniform manner. … Read more
Use the Application.DispatcherUnhandledException Event. See this question for a summary (see Drew Noakes’ answer). Be aware that there’ll be still exceptions which preclude a successful resuming of your application, like after a stack overflow, exhausted memory, or lost network connectivity while you’re trying to save to the database.