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Questions tagged [error-handling]

Programming language constructs designed to handle errors signaled by error codes, exceptions or other language specific means.

Error Handling comprises design of the code that handles errors, as opposed to the code that handles the (normal) program logic in the absence of errors during program execution.

See also

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JAX-RS / Jersey how to customize error handling?

I'm learning JAX-RS (aka, JSR-311) using Jersey. I've successfuly created a Root Resource and am playing around with parameters: @Path("/hello") public class HelloWorldResource { @GET @Produces("text/html") public String get( …
Mark Renouf
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live output from subprocess command

I'm using a python script as a driver for a hydrodynamics code. When it comes time to run the simulation, I use subprocess.Popen to run the code, collect the output from stdout and stderr into a subprocess.PIPE --- then I can print (and save to a…
DilithiumMatrix
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Cryptic "Script Error." reported in Javascript in Chrome and Firefox

I have a script that detects Javascript errors on my website and sends them to my backend for reporting. It reports the first error encountered, the supposed line number, and the time. EDIT to include doctype:
Mike Sherov
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Is assert evil?

The Go language creators write: Go doesn't provide assertions. They are undeniably convenient, but our experience has been that programmers use them as a crutch to avoid thinking about proper error handling and reporting. Proper error handling…
Frank
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Deploying website: 500 - Internal server error

I am trying to deploy an ASP.NET application. I have deployed the site to IIS, but when visiting it with the browser, it shows me this: Server Error 500 - Internal server error. There is a problem with the resource you are looking for, and it…
Jacob Jedryszek
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Detailed 500 error message, ASP + IIS 7.5

IIS 7.5 , 2008rc2, classic asp, 500 error msg: The page cannot be displayed because an internal server error has occurred. I need to know how to configure IIS to get a more detailed error. I've tried setting to true all of debugging options in the…
egidiocs
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Error-Handling in Swift-Language

I haven't read too much into Swift but one thing I noticed is that there are no exceptions. So how do they do error handling in Swift? Has anyone found anything related to error-handling?
peko
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Error: could not find function ... in R

This is meant to be a FAQ question, so please be as complete as possible. The answer is a community answer, so feel free to edit if you think something is missing. This question was discussed and approved on meta. I am using R and tried…
Joris Meys
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try, try! & try? what’s the difference, and when to use each?

In Swift 2.0, Apple introduced a new way to handle errors (do-try-catch). And few days ago in Beta 6 an even newer keyword was introduced (try?). Also, knew that I can use try!. What's the difference between the 3 keywords, and when to use each?
Abdurrahman
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How do I log ALL exceptions globally for a C# MVC4 WebAPI app?

Background I am developing an API Service Layer for a client and I have been requested to catch and log all errors globally. So, while something like an unknown endpoint (or action) is easily handled by using ELMAH or by adding something like this…
Matt Cashatt
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What's the source of Error: getaddrinfo EAI_AGAIN?

My server threw this today, which is a Node.js error I've never seen before: Error: getaddrinfo EAI_AGAIN my-store.myshopify.com:443 at Object.exports._errnoException (util.js:870:11) at errnoException (dns.js:32:15) at…
ThomasReggi
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Log exception with traceback

How can I log my Python errors? try: do_something() except: # How can I log my exception here, complete with its traceback?
TIMEX
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Eclipse returns error message "Java was started but returned exit code = 1"

I just downloaded and dearchived android SDK for Windows. I`m currently using W8 64x.
Vladislav Bogdanov
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Error handling in C code

What do you consider "best practice" when it comes to error handling errors in a consistent way in a C library. There are two ways I've been thinking of: Always return error code. A typical function would look like this: MYAPI_ERROR…
Laserallan
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"Inner exception" (with traceback) in Python?

My background is in C# and I've just recently started programming in Python. When an exception is thrown I typically want to wrap it in another exception that adds more information, while still showing the full stack trace. It's quite easy in C#,…
EMP
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