rethrow

Throw VS rethrow : same result?

怎甘沉沦 提交于 2019-12-05 16:43:33
问题 refering to a lot of documentation on the net, particularly on SO, eg : What is the proper way to re-throw an exception in C#? there should be a difference between "throw e;" and "throw;". But, from : http://bartdesmet.net/blogs/bart/archive/2006/03/12/3815.aspx, this code : using System; class Ex { public static void Main() { // // First test rethrowing the caught exception variable. // Console.WriteLine("First test"); try { ThrowWithVariable(); } catch (Exception ex) { Console.WriteLine(ex

How to re-throw an exception

て烟熏妆下的殇ゞ 提交于 2019-12-05 12:57:26
问题 In my onCreate() I set an UncaughtException handler as follows: Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() { @Override public void uncaughtException(Thread thread, Throwable throwable) { Log.e(getMethodName(2), "uncaughtException", throwable); android.os.Process.killProcess(android.os.Process.myPid()); } }); It works OK, but I would like to get back the system's default behavior of displaying the force-close dialog to the user. If I try to replace the

Throw VS rethrow : same result?

烂漫一生 提交于 2019-12-04 02:27:13
refering to a lot of documentation on the net, particularly on SO, eg : What is the proper way to re-throw an exception in C#? there should be a difference between "throw e;" and "throw;". But, from : http://bartdesmet.net/blogs/bart/archive/2006/03/12/3815.aspx , this code : using System; class Ex { public static void Main() { // // First test rethrowing the caught exception variable. // Console.WriteLine("First test"); try { ThrowWithVariable(); } catch (Exception ex) { Console.WriteLine(ex.StackTrace); } // // Second test performing a blind rethrow. // Console.WriteLine("Second test"); try

How to re-throw an exception

笑着哭i 提交于 2019-12-04 00:01:18
In my onCreate() I set an UncaughtException handler as follows: Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() { @Override public void uncaughtException(Thread thread, Throwable throwable) { Log.e(getMethodName(2), "uncaughtException", throwable); android.os.Process.killProcess(android.os.Process.myPid()); } }); It works OK, but I would like to get back the system's default behavior of displaying the force-close dialog to the user. If I try to replace the KillProcess() call with a throw throwable the compiler complains that I need to surround it with a try

How to automatically re-raise exception after handlers

≯℡__Kan透↙ 提交于 2019-11-30 09:55:37
问题 In C#, threads have an Abort method that causes a ThreadAbortException to be raised in them wherever they might be running. Python does not have this feature, and so it has been implemented. However, this implementation does not cause the exception to be automatically re-raised once at the end of all the exception handling. Some experiments were tried with sys.settrace and also ThreadAbortException.__del__ without success. These seem to be on the right track to implementing an exception that

What are the differences between throws and rethrows in Swift?

元气小坏坏 提交于 2019-11-29 21:12:24
After searching for some references to figure it out, -unfortunately- I could not find useful -and simple- description about understanding the differences between throws and rethrows . It is kind of confusing when try to understand how we should use them. I would mention that I am kind of familiar with the -default- throws with its simplest form for propagating an error, as follows: enum CustomError: Error { case potato case tomato } func throwCustomError(_ string: String) throws { if string.lowercased().trimmingCharacters(in: .whitespaces) == "potato" { throw CustomError.potato } if string

How to automatically re-raise exception after handlers

我与影子孤独终老i 提交于 2019-11-29 17:46:10
In C#, threads have an Abort method that causes a ThreadAbortException to be raised in them wherever they might be running. Python does not have this feature, and so it has been implemented. However, this implementation does not cause the exception to be automatically re-raised once at the end of all the exception handling. Some experiments were tried with sys.settrace and also ThreadAbortException.__del__ without success. These seem to be on the right track to implementing an exception that can automatically raise itself again. Unfortunately, a clean implementation that might also support a

Why does resharper say 'Catch clause with single 'throw' statement is redundant'?

二次信任 提交于 2019-11-29 09:10:01
I thought throwing an exception is good practice to let it bubble back up to the UI or somewhere where you log the exception and notify the user about it. Why does resharper say it is redundant? try { File.Open("FileNotFound.txt", FileMode.Open); } catch { throw; } Because try { File.Open("FileNotFound.txt", FileMode.Open); } catch { throw; } is no different than File.Open("FileNotFound.txt", FileMode.Open); If the call to File.Open(string, FileMode) fails, then in either sample the exact same exception will find its way up to the UI. In that catch clause above, you are simply catching and re

What are the differences between throws and rethrows in Swift?

我的未来我决定 提交于 2019-11-28 16:59:28
问题 After searching for some references to figure it out, -unfortunately- I could not find useful -and simple- description about understanding the differences between throws and rethrows . It is kind of confusing when try to understand how we should use them. I would mention that I am kind of familiar with the -default- throws with its simplest form for propagating an error, as follows: enum CustomError: Error { case potato case tomato } func throwCustomError(_ string: String) throws { if string

Why does resharper say 'Catch clause with single 'throw' statement is redundant'?

半世苍凉 提交于 2019-11-28 02:33:14
问题 I thought throwing an exception is good practice to let it bubble back up to the UI or somewhere where you log the exception and notify the user about it. Why does resharper say it is redundant? try { File.Open("FileNotFound.txt", FileMode.Open); } catch { throw; } 回答1: Because try { File.Open("FileNotFound.txt", FileMode.Open); } catch { throw; } is no different than File.Open("FileNotFound.txt", FileMode.Open); If the call to File.Open(string, FileMode) fails, then in either sample the