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.
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Handling exceptions of FileInputStream and XSSFWorkbook
Can you tear my code apart with code review comments?
Below is a simple method which reads an XLSX file and does some stuff with it.
I use FileInputStream and ...
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Two versions of user-specified exception filters that log a different message on match
I'd like to show you two versions of my two functions that support my logging tools. Their purpose is to log a different message (here abort) when an error occured ...
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C interface exception handling with C++ implementation
Whilst developing a bigger project, I was in need of having basic error handling inside the context of a C interface.
I came up with the following solution.
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Catching the timed out Exception raised by the __init__ method of the class ftplib.FTP
Introduction
I have written a Python class which uses the module ftplib. In this class I have created a private method called <...
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Error Reporting in WPF app
I want to add an error reporting feature to my WPF app. I have the view for it created; I just need to know when to call it. I am used to web development and this is my first WPF app.
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A simple parser for bencoding format
I have been learning rust sporadically for a while now and decided to write some toy projects. While browsing https://github.com/codecrafters-io/build-your-own-x I came across some bittorrent client ...
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I'm writing the command processing part of the tui for a basic task manager/todo list application
The idea is that the TUI struct handles what gets printed to the terminal (I will make it pretty in the future, right now I'm just building its core functionalities) and for processing input. It's ...
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Outcome error handler, inspired by boost's outcome namespace
I'm creating a little library for my pet project that is inspired by Boost's outcome namespace. The main reason why I didn't want to use the Boost version is that I don't like the overhead of ...
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Beginner Java Tic-Tac-Toe
I had a Tic Tac Toe assignment for class and the program seems to work fine but I feel like the exception/input handling could be done in a much better way. Is this a good way to approach the ...
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Catching any exception and actually do something with it [closed]
Say I have a framework, which should catch any exceptions raised from user code, and actually do something with it, such as converting it to a return value
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Write a simple, clean error message without a backtrace and exit on failure
I want to write on failure to either STDOUT or STDERR a clean, simple error message for the user, without the (verbose) ...
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atomic spinlock mutex class
This here is the follow-up to this question. I was recommended to implement a Lockable type (similar to std::mutex) that can work with ...
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Protecting functions from empty DataFrames
Pandas likes to throw cryptic errors when you feed its functions with empty DataFrames saying nothing that would help you to identify the root cause. In order to ...
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Function to return a file name from lists/dictionary constants
I'm reworking a set of two functions that return a text file name, constructed from a string argument and string variables from a module called inventory. It seems ...
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Cancelling function execution with a ContinuationError
Although throwing excptions for control flow is a controversial topic there are some quite popular examples of using this anti-pattern like C#'s async routines throwing the ...
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Dividing two numbers then handle the divide by zero exception with try/catch
I am new to coding, I hope you can help me to improve my code :)
First of all: The code works correctly.
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Basic scoped timer struct design
I have written the following simple scoped timer struct in order to help me measure the execution time of arbitrary scopes.
Here is the code (live):
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Spring boot shop application with error handling
I'm writing a simple online shop using spring boot, for learning purposes. Right now I have purchasing-service and a product-service. The purchasing-service makes requests to the product-service via ...
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CSV to list, map to database
I have a code block that imports CSV to list and map to a database. And there are few validations and I've to return error messages based on those validations. Right now all those logic is handled by ...
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Command handlers in node.js
Description
This javascript code uses tmi.js to listen for chat messages in a Twitch chat and perform certain actions depending on their content. In the sample code ...
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Stepwise nested pattern mattching with exceptions
Background
I'm building a lisp-like toy language in Haskell with the following (stripped down) AST:
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A stripped-down version of UNIX sort utility
Usage:
./usort <options> <filename>
Name:
./usort - sort lines of text.
Description:
Write sorted concatenation of FILE to standard output. ...
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Shader Program OpenGL
I am new to OpenGL learning it on amazing website learnopengl.com
I wanted to a convenient way to use shader programs thats why I created this struct, please review it.
ShaderProgram.h
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When to use IllegalStateException [closed]
I am implementing an API that implements an interface, but I do not need to implement all methods.
In that case, is it better to just return null or throw an IllegalStateException because it if not ...
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error tracking in api endpoint
I have built a simple Nuxt 3 app and have some custom api endpoints.
I am currently tracking the user query and response statuses to have some insight when something goes wrong and that the app is ...
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Take in 10 numbers, validate each input, append then in a list and then prints the sum of the list values
I'm practicing loops in Python and started trying to have a better approach with user inputs, is there better ways of dealing with inputs when coding?
And I tried using deques too, it worked very well,...
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Processing charge current error messages with HashMap<>
I have certain error states that I am displaying in my Android TextView but only one message is displayed at a time and if all values are set to 0, no message is displayed. So, I check all the values ...
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Error handling for Laravel REST API client and server using bearer token authentication
I would like to query a REST API (which uses Bearer token authentication), handling several exceptions that might occur. Could you tell me if the following code (which I explain later in this post) is ...
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241
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Google App Script Automation for User Onboarding
Background
I am a relatively new developer(> 2 years coding) working as an intern for a smaller company, as part of a now 4 person team. We had two other team members, one our system admin and the ...
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Unit tests for PNGme steganography exercise in Rust
I want to become proficient in Rust and I've followed the PNGme exercise. I've completed it up until Chapter 4 included, where I've written a lot of tests myself for verifying that the command line ...
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Program to check if a window is opened or not during some time interval
I'm trying to write a program that will check if a window is opened or not, during a given time. I was able to do that, but now I'm trying to make my code look cleaner. I don't like how I implement ...
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Trying to assign property until the setter stops throwing the exception
Can I improve this code and make it more beautiful? For example, for expressions in ReadConsole method is ugly for me.
...
user256892
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JavaScript proxy for better stack traces from external libraries
I've been using the excellent pg-promise library for a few years now, but my primary irk with it is that the stack traces are sometimes unhelpful. For example, the following test will fail (currently ...
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Typescript error handler
I wrote a function in Typescript which takes required parameters, optional parameters and parameters with default value. I want to use this function for error handling of http requests. I am not sure, ...
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Retry read/write until all bytes are transferred or error occurs
Currently I have a wrapper function for the read/write system calls, the purpose of which is to eliminate partial transfer ...
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Open, read/write, then close a relative path
These functions will open a relative path, read or write to the file, then close. The purpose of these functions is to avoid duplicate code patters for accessing different files that only require one ...
user255905
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Try-catch-finally with 'using' in ADO.NET
I want to check if I'm correctly disposing of resources using Ado.NET. I'm not sure when the 'using' statement makes .Dispose() irrelevant.
Please bear in mind I'm aware I shouldn't hardcode my SQL ...
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Follow Up: Refactored C# Tool to Generate MS Word Document Mailbox List From MS Excel
Background
Some very good observations were made about my original code in the 2 answers to this question. In this version I have attempted to reduce cyclic complexity and class coupling even more as ...
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Dictionary based non-local mean implementation in C++
This is a follow-up question for Manhattan distance calculation between two images in C++ and Dictionary based non-local mean implementation in Matlab. For learning C++20 and researching purposes, I ...
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Implementation of exponential backoff algorithm
You can read about the algorithm here.
An exponential backoff algorithm retries requests exponentially, increasing the waiting time between retries up to a maximum backoff time. An example is:
Make ...
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Check nullability vs throw NullExceptions [closed]
I have been trying to understand the difference between two approaches and have always got confused so thought of asking this question here.
Consider following code,
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Find the mean magnitude of values inside unit circle
I'm fairly new to Python and am exploring how to fix functions and make code 'more effective and readable'. As a first step, I would want to try to make shorter snippets of code here - for example by ...
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Create trigger that updates Table3 from an insert into Table1 that multiplied by a value in Table 2 in MySQL
I know this is probably more complicated than it needs to be, however, I would really appreciate some help. I'm trying to create a trigger in MySQL that will update the value in the Costs table when a ...
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Use an exception to check if item in dictionary [closed]
I am using a KeyNotFoundException to check if an item exists in a Dictionary, creating it when the exception is thrown:
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Nested try-except for raising exceptions in Python
I'm wondering if the nested "try/except/else" structure (in the main function) is a good practice in Python. Right now, the structure is not that deep but I could continue on and on with ...
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Requiring query field to not be empty on search api
we have a RESTful API that includes an endpoint for search
apiserver/v5/search?q=[search text]
for any query, it passes it off to solr and returns the result like
...
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Robust program to write an array of certain data type to a binary file and read back from it (C++17)
Problem description
As the title indicates, I want to be able to write to and read from a binary file safely, in the sense that I want to have full control of everything that might go wrong. Since I ...
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Class to wrap result or exception, similar to the OneOf approach
I recently came across the OneOf<T0,...,Tn> package from mcintyre321 via a video by Nick Chapsas, which presents the idea of holding exception types to be ...
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