exception-handling

问题 I have to catch the exception when SIGKILL , SIGABRT , Signal-0 exceptions are raised. Please Suggest how to handle the above Signals through Exception handling. Can you please suggest me any sample code to do this? Thanks in advance. 回答1: developers with java and C# background are bound to go for exception handling in iOS. Apple has some really good API's to solve the known errors but the program should be made exception free(which i know is difficult). Sigabrt usually occurs when u over

问题 I was trying with a simple code using org.testng.Assert to assert 2 use-cases. In the first use-case I am asserting 2 unequal values which Fail correctly. But in the second use-case when I am asserting 2 unequal values within the try-catch block, the result is always returned as Pass My code is as follows: package demo; import org.testng.Assert; import org.testng.annotations.Test; public class Q43710035 { @Test public void test1() { System.out.println("Within test1"); int a = 12; int b =20;

问题 I've seen in multiple projects a kind of catch all exception to catch all unexpected exception so the app won't crash, i see this usually with : AppDomain.CurrentDomain.UnhandledException += new UnhandledExceptionEventHandler(myUnexpectedExhandler); Application.ThreadException += new System.Threading.ThreadExceptionEventHandler(threadExHandler); Is this a good or bad practice. 回答1: Catching exceptions at the top level of your project is fine and correct. There, you can do things such as log

问题 int i=0; try{ int j = 10/i; } catch(IOException e){} finally{ Console.WriteLine("In finally"); Console.ReadLine(); } The finally block does not seem to execute when pressing F5 in VS2008. I am using this code in Console Application. 回答1: The Visual Studio debugger halts execution when you get an uncaught exception (in this case a divide by zero exception). In debug mode Visual Studio prefers to break execution and give you a popup box at the source of the error rather than letting the

问题 Is there anyway to implement a global exception handler for iPhone apps such that exceptions, instead of silently crashing the app, could allow for some sort of message? I can understand if it's not do-able since the program may be in an inconsistent state, but it'd be nice to at least tell users "Sorry - something went wrong!" Thanks! 回答1: Check this question for the answer. It seems to indicate that you'll be getting junky stack traces, but you definitely can set a global exception handler.

问题 I started a new WPF project in VS2008 and then added some code to trap DispatcherUnhandledException . Then I added a throw exception to Window1 but the error is not trapped by the handler. Why? public App() { this.DispatcherUnhandledException += new DispatcherUnhandledExceptionEventHandler(App_DispatcherUnhandledException); } void App_DispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e) { System.Windows.MessageBox.Show(string.Format("An error occured: {0}", e

问题 I have the line: c.writerow(new_values) That writes a number of values to a csv file. Normally it is working fine but sometimes it throws an exception and doesn't write the line in the csv file. I have no idea how I can find out why. This is my exception handling right now: try: c.writerow(new_values) except: print() print ("Write Error: ", new_values) I commented out my own exception and it says: return codecs.charmap_encode(input,self.errors,encoding_table)[0] UnicodeEncodeError: 'charmap'

问题 This question already has answers here : Closed 8 years ago . Possible Duplicates: Why are empty catch blocks a bad idea? Is there any valid reason to ever ignore a caught exception Do you know any situations when an empty catch block is not the absolute evil? try { ... // What and When? ... } catch { } 回答1: There are a lot of questions on this, try to look at: Why are empty catch blocks a bad idea? From that post's accepted answer: Usually empty try-catch is a bad idea because you are

问题 I have the following classes: public class Person { [Key] public Guid Id { get; set; } [Required] public string FirstName { get; set; } [Required] public string LastName { get; set; } [Required] public string Email { get; set; } public virtual Survey Survey { get; set; } } public class Survey { [Key] public Guid Id { get; set; } public bool IsFinished { get; set; } public virtual ICollection<UserAnswer> UserAnswers { get; set; } public virtual Person Person { get; set; } } public class

问题 I need to add exception handling that considers if line 7 fails because there is no intersection between the query and array brands. I'm new to using exception handlers and would appreciate any advice or solutions. I have written an example structure for exception handling, but I am not certain whether it will work. brands = ["apple", "android", "windows"] query = input("Enter your query: ").lower() brand = brandSelector(query) print(brand) def brandSelector(query): try: brand = set(brands)