Questions tagged [error-handling]
The various techniques used for maintaining stable program state in circumstances that, if not taken care of ("handled"), could cause serious issues, including logical bugs and abrupt execution termination.
668
questions
2
votes
0answers
11 views
Error handling in express without middlewares and using class structure
This is a simple implementation of Django's sample project "Poll" using and express.
The controller code:
...
-2
votes
0answers
34 views
Building a Vehicle object from Excel data using Apache POI [on hold]
I have the following code which is working but I am not satisfied with it and it seems like an ugly hack.
NppColumn is an enum which contains the column indexes. The problem is when a POI row cannot ...
5
votes
1answer
121 views
Detecting the presence of multiple URL segments
I have two versions of a function that performs the same task, however I'm not sure which one to use. Speed is something to take into consideration, but I also want to know what the best practice is. ...
3
votes
3answers
929 views
Go function to test whether a file exists [closed]
How could one write in a more elegant way that if error is null, the result is true? I really need a bool as returned value.
...
4
votes
1answer
42 views
Send / receive wrapper for System.Net.Sockets - follow-up
I recently posted a question about improving thread and socket safety in my NetworkEndpoint class. previous post
I have implemented the changes suggested in the answer I got there. When I asked for a ...
0
votes
1answer
20 views
Enumerating AWS instances in Rails, with error handling
I have created a method, which is raising the same exception in case of any error:
...
7
votes
3answers
523 views
Compiling all Exception messages into a string
Below is a recursive function I've written that's responsible for compiling a string consisting of a Exception's message, and also each of that ...
6
votes
1answer
82 views
Send / receive wrapper for System.Net.Sockets
The following NetworkEndpoint class serves as a simple send / receive interface for either side of a network connection (client or server) when provided with a ...
9
votes
4answers
1k views
Skipping over failed imports until they are needed (if ever)
We have a program with many dependencies. Because the user may not want to use all of them, the program should skip over failed imports and only raise an error if absolutely necessary. e.g. if the ...
0
votes
0answers
19 views
Complexity of a service method to fetch search results from an API
I tried the plug in CodeMetrics for Visual Studio Code along with some of my current Angular projects, and I was a little suprised about the outcome.
I have a ...
3
votes
1answer
65 views
PHP Error handler class
I set up an error handler class to handle all server errors, I know there are already quite a few out there, but I like creating my own for better learning and understanding of how things work.
I am ...
-4
votes
1answer
47 views
What is wrong with my 'except' code here? [closed]
I am learning python and am working through some try and except codes. What is wrong here?
The code aims to convert the input ...
3
votes
0answers
41 views
msmq bulk send in c# [closed]
Please review the code below and provide constructive feedback to improve.
Multiple threads call the SendMessageToMSMQ method to send messages to a msmq queue.
...
2
votes
0answers
11 views
Thread safe Shareable and Splittable Buffer with Safe Memory (Project)
Backstory
This is a buffer I wrote for use in multiple personal projects. It is designed
to handle pretty much any data in pretty much any way. In particular I intend to
use it in such instances as ...
2
votes
1answer
60 views
Should I re-throw exceptions within a method, or is there a better way to handle it? [closed]
When handling errors in C#, is it acceptable/appropriate to re-throw exceptions that are caught in a try/catch?
My scenario is that I am making an HTTP request and ...
2
votes
0answers
70 views
Async in Railway Oriented Programming in F#
In F# the Railway Oriented Programming pattern can be implemented synchronously using the Result<'t,'terr> type as result value for functions, so they can be ...
2
votes
1answer
40 views
PHP LDAP credentials validation and error handling
I developed this group of scripts to validate users againts a LDAP server and presenting the appropiate message to the user after sending the information.
I wonder if I'm handling everything properly ...
4
votes
2answers
60 views
Thread-safe stack in Java with fixed capacity
Implement a multi-threaded stack, with freedom to use existing
implementations of stack. On top of being thread-safe, it must block
(not busy-wait) a pushing thread when stack is full and a ...
2
votes
2answers
60 views
Validating that a Java program has two equal-length arguments
I'm writing a small almost one method Java class for a job application and the advice given was to write it as though it was a piece of commercial software.
The ...
5
votes
1answer
30 views
Typescript monad for data being loaded
I have been struggling to make typescript happy about the types.
I am pulling data from our backend API and I wanted to give context to the data. Basically it is a monad with 4 shapes:
Initial (...
3
votes
1answer
48 views
Interactive command-line binary to decimal converter
Is this the most efficient way to write this piece of code? Is there a better way of handling errors inside of a while/for loop, instead of calling back to the original function? I have tried using <...
3
votes
1answer
71 views
Get result from form website operation
I want to get a result from the website when I submit a form. There are several things that can go wrong.
In a simple scenario I want to return:
true - when ...
2
votes
1answer
66 views
Exception, errors handling, best practice in WebApi Core
I'm making my WebApi project.
My logic is, the controller didn't see data. It only triggers a service that returns objects to it. My simple method from ...
3
votes
2answers
55 views
Generic function that accepts both Actions and Func's as parameters
I've created a generic try catch I can apply throughout my code so I'm not repeating myself.
...
0
votes
0answers
25 views
Making Oauth request asynchronously, with retry if token has expired
I'm struggling with asynchronous code. Does anyone have suggestions of a better way to do the following?
What I'm doing: hitting an API (google's, actually), with a call that might get a 401 if the ...
4
votes
0answers
33 views
Python: Exception handling in a logic gate
I'm learning about Python and am going through the OO-stage where I'm building a set of logic-gate classes.
To make the logic more resilient, I only want the user to be able to enter a value of 0 or ...
3
votes
0answers
53 views
Copying content from Excel into PowerPoint as a picture, with error handling
The code below works, but I want to ask if my solution is adequate or if there's something I should structure differently. If it's alright, I'll apply the same code in other subs.
My code copies ...
5
votes
1answer
42 views
Enum for handling network request errors in Swift
I'm working on a new API written in Swift 5 and I wanted to play with the new Result. I wanted to know what you guys think about this syntax:
...
3
votes
0answers
28 views
Connect to a database with Diesel
New to Rust and would like some clarification on idiomatic and readable use of Result and Error types. Here I'm simply connecting to a database using Diesel. In my opinion, the use of match and Boxing ...
4
votes
1answer
532 views
Should my Json storage handle exceptions?
I made a class to conviniently serialize/deserialize data. Now I'm stuck with the following question. Should I handle exceptions (use try-catch) inside JsonStorage ...
0
votes
2answers
76 views
Custom Error Classes in OOP
I have a class which parses a .csv file and converts it into successful rows and errors. Currently I have 12 different kind of errors (mail is not valid, missing column x, row is duplicate etc.).
...
1
vote
1answer
37 views
Decode Argon2 parameters and handling decode errors
I am writing a function to decode Argon2 hashed string to extract parameters. I need to handle many decode errors, and handle those errors lead to write many repeating ...
1
vote
0answers
30 views
Temporarily block API calls when server sends a 503 response
I have a scenario in which I call many APIs throughout my application lifecycle.
In case the server sends me a 503 response code, it will also send a lockdown object which has a timestamp associated ...
2
votes
0answers
53 views
DirectX11 Error Handling
I'm new to C++, been a C programmer most of my life. I wanted to get into graphics and Direct3D is C++ so I figured it was about time. I've been learning about strings, vectors, references, smart ...
6
votes
2answers
142 views
Simulation of a banking system with an Account class in C++
I have been learning C++ and recently I have started practicing classes. I made this simulation of a banking system with an Account class. I would like to hear feedback on my code, what is good - what ...
1
vote
0answers
18 views
Requests / Facebook API - Dealing with Errors
I work in marketing and I am currently trying to aggregate data for 50 facebook pages on the same Business Page.
I have a loop ...
2
votes
1answer
58 views
Retry a Promise resolution N times, with a delay between the attempts
I want some JavaScript code to take 3 things as parameters:
A function returning a Promise.
The maximum number of attempts.
The delay between each attempt.
What I ended up doing is using a ...
1
vote
0answers
37 views
Rethrowing Error through several classes [closed]
This is a simplified version of my app. It has a bunch of scraper classes, and a Job class, which controls the collection of data, and the saving to the db. During scraping it could happen many ...
1
vote
1answer
99 views
VBA Function Error Bubbling
What will be the best practice to create an efficient error handler in object class in VBA? Creating some for Outlook (used later in both, Excel and Access) and trying to get the most efficient and ...
2
votes
1answer
44 views
Constructor for a packagetarget struct
As many of you know goto is usually signs of code smell. However I thought this could be an appropriate case, and would like confirmation or criticism.
Unnecessary ...
5
votes
1answer
70 views
Error handling function (Win32/C)
I have written the following function to be a general "error logging" solution for my Windows API projects. Basically, given a Windows system error code (a la ...
1
vote
1answer
35 views
Page download with reattempts in Scala
I wrote the following code to deal with possible network problems.
...
4
votes
1answer
148 views
Node.js http retry do while mechanism
I have implemented a simple do/while loop to handle a http request to a third-party. I don’t know when the data I receive will have elements in its array so I retry up to 10 times until the array ...
11
votes
3answers
2k views
Decoding assembly instructions in a Game Boy disassembler
I am coding a game boy disassembler in C++. The program (simplified here) converts a vector of byte into an assembly instruction and print it.
To do so, it iterates through the vector of bytes (char)...
-1
votes
1answer
71 views
C# Handling Task Cancellations/Timeouts and Exceptions [closed]
I am very new to Tasks and therefore new to handling task cancellations and task exceptions.
I wrote this method that gets a List which is then used to populate an ObsservableCollection shown in a ...
3
votes
3answers
114 views
A more functional try…catch construct in Java
I saw a question on Stack Overflow asking for a review of a custom try...catch construct that made use of Optionals, and got the idea to try writing my own version. ...
4
votes
0answers
80 views
Memory managment for RPC code in C
My team has been given care of an old embedded C project. Its main part is a security critical RPC API and I'm trying to create a new design of its internal interfaces to make it more robust against ...
2
votes
2answers
41 views
Lock file and interrupt signals in POSIX shell script running indefinitely
This script is running indefinitely as the Linux background process.
I have put an enormous effort to make this POSIX shell script containing an infinite loop shut down tidily along with the ...
3
votes
2answers
85 views
Function to call a list of callables with retry
This script is designed to be run via windows task scheduler once per day.
All callables passed to this function should only return a bool. The callables are called until either the maximum number of ...
0
votes
1answer
31 views
Using foldl to add numbers, while validating that they are nonnegative
I have a function that will calculate the sum of a list of integer, however if any of the number is negative, it will should an error instead (not throwing exception).
The following is a working ...
