try-catch

问题 Just saw this error today on our application. We have a small box on top right of the webpage. It gets updated every minute. What it does is make a jsonp call to each of our hospital partners via intranet and pulls the latest news. The issue doesn't happen often. I actually found out why the error is happening. Uncaught TypeError: jQuery11020382352269484832883_1441911920555 is not a function This error shows up in console when a jsonp request doesn't get the response from the jsonp service

问题 I'm trying to write a small context manager that'll try to execute some code repeatedly until the code works or until a specified number of tries has been made. I have attempted to write this but am encountering a difficulty with having the context manager handle problems when yielding: Exception RuntimeError: 'generator ignored GeneratorExit' How should I code this? import contextlib import random def main(): with nolube(): print(1 / random.randint(0, 1)) @contextlib.contextmanager def

问题 I am looping through a list of samaccountnames and performing several actions: # Disabling user try { Disable-QADUser $user | Out-Null } catch [exception] { "Disable-QADuser: " + $($_.Exception.Message) | out-file $logfile -append write-host " - Error disabling useraccount." -fore yellow } # Set informative description try { Set-QADuser $user -Description "Disabled $now" | Out-Null } catch [exception] { "Set-QADuser: " + $($_.Exception.Message)| out-file $logfile -append write-host " - Error

问题 I am looping through a list of samaccountnames and performing several actions: # Disabling user try { Disable-QADUser $user | Out-Null } catch [exception] { "Disable-QADuser: " + $($_.Exception.Message) | out-file $logfile -append write-host " - Error disabling useraccount." -fore yellow } # Set informative description try { Set-QADuser $user -Description "Disabled $now" | Out-Null } catch [exception] { "Set-QADuser: " + $($_.Exception.Message)| out-file $logfile -append write-host " - Error

问题 I wondering it is the way to check in tryCatch function kind of errors or warnings like in Java for example. try { driver.findElement(By.xpath(locator)).click(); result= true; } catch (Exception e) { if(e.getMessage().contains("is not clickable at point")) { System.out.println(driver.findElement(By.xpath(locator)).getAttribute("name")+" are not clicable"); } else { System.err.println(e.getMessage()); } } finally { break; } In R I only find solution for handling all error in one ways, example

问题 I have simple function to write files. public static void WriteFile(string filename, string text) { StreamWriter file = new StreamWriter(filename); try { file.Write(text); } catch (System.UnauthorizedAccessException) { MessageBox.Show("You have no write permission in that folder."); } catch (System.Exception e) { MessageBox.Show(e.Message); } file.Close(); } How can I convert my code to use StreamWriter.WriteAsync with try-catch? 回答1: async public static void WriteFile(string filename, string

问题 I have a program running on many different linux distros. When I compile it on FreeBSD 10.1 for some reason the catch clauses stop working and exceptions that should get caught crash my program. When debugging I modified one of the catch clauses to "catch (...)" and still the exception wasn't caught. I guess the issue is related to the linker, but I don't know how to debug it futher. When I tried compiling a test program that simply throws and catches and exception it worked - so I guess the

问题 I am currently building a WebApi service that connects with the backoffice of my application allowing the user to click a button an trigger a series of web service requests that trigger my Umbraco website to updated with content. The class for my WebApi service is setup as so: public class MyController : UmbracoApiController{ // Global variable declarations go here private MyController(){ // assign actual values to global variables here } public string GetAllUpdates(){ try{ GetCountries();

问题 So I have a function that retrieves data from a database, and outputs it. It's encased in a try block, so that the error from running out of rows to process is dealt with. Here's the function that is called on load (to make the initial output ), and called later on to update the log box. Problem is, whenever I call the function again, it outputs the data twice. Since only the data is in the try block, and not the headers, this points to the try / catch being the issue. Apologies for the messy

问题 I'm working on a script and want to check, if a taskname is existing. It looks so far like this: try { Get-ScheduledTaskInfo -TaskName "taskname" } catch { echo "doesn't exist" } When I run the code, it prints me the error message and not "doesn't exist": PS C:\Windows\system32> try { Get-ScheduledTaskInfo -TaskName "taskname" } catch { echo "doesn't exist" } Get-ScheduledTaskInfo : The system cannot find the file specified. At line:2 char:5 + Get-ScheduledTaskInfo -TaskName "taskname" + ~~~~