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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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.
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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 ...
user256024
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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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3
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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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2
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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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Calculate distances between two multi-dimensional arrays in Matlab
In question "Dictionary based non-local mean implementation in Matlab", the Manhattan distance between two three-dimensional structures can be calculated by ...
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1
answer
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Gear Shift Indicator using Hall Effect Sensors & 8x8 LED Display
I wired up a Gear Shift Indicator for my dad's car to display what gear it is currently in, and showing changes with animations (sliding up and down as appropriate, with a few bonus ones for fun at ...
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Batch installing packages script in Octave
I am attempting to write a light script to deal with multiple package installation in Octave. The available packages can be checked in Octave Forge or wikipedia. For example, if the packages ...
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Spring boot: better way to handle response and exceptions
I am working on a quite a big Spring Boot web service and I wanted a standardized and simplified way to handle responses and exceptions by following fluent API design.
So this is what I did and it ...
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0
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Dictionary based non-local mean implementation in Matlab
Given a dictionary including multiple X-Y pairs where X, Y are both three dimensional structure. dictionaryBasedNonlocalMean function return a ...
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2
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2D Maze Game with Monsters
Introduction
I've started to learn C programming a bit and wanted to create a simple 2D console game. Let me first introduce you to the game level/map structure:
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Rust Error Handling - Can this error handling be made cleaner?
Recently I started to learn Rust. I come from a mostly Java background, but spent roughly the last two years in Go. I am working on converting a small microservice that reads data from Kafka and ...
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Setting Wallpaper with Xlib and ImageMagick cli
This program reads raw pixels from the pipe/stdin in a loop and set the root window background.
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1
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Archiving MongoDB data to S3, with retryable steps
I have a python script to archive some data (export from mongo to a local json file and then upload it to s3)
Is there a better way to implement/improve the current flow? Each step should be be ...
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Android APP FTP downloading file implementation in Java
This is a follow-up question for Android APP connect to FTP server in Java and Android APP FTP uploading file implementation in Java. I am attempting to perform the download operation to specified FTP ...
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1
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Open, writing to, and closing a configuration file, and error checking the process in C
All this does is safely and reliably opens, writes to, and closes the file. Yet there are so many gotos and the code is quite verbose. I am not even sure that all ...
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Exception handling: using @JsonProperty value to make error message
If the validation in RestController fails, I need to handle MethodArgumentNotValidException and provide an errorMessage, that ...
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1
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SubImage function implementation in C
This is a follow-up question for Two dimensional gaussian image generator in C, Two dimensional bicubic interpolation implementation in C and A SubPlane Method for Generic Two Dimensional Data Plane ...
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1
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Android APP FTP uploading file implementation in Java
This is a follow-up question for Android APP FTP host profile class implementation and Android APP connect to FTP server in Java. I am attempting to perform the upload operation to specified FTP ...
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1
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Android APP user registration page implementation
This is a follow-up question for Android APP User class implementation. I am attempting to build a user registering system and this post shows the user registration page implementation.
The ...
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1
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Android APP Password Strength Assessment class implementation
This is a follow-up question for Android APP User class implementation. I am attempting to create a password strength assessment class which is named ...
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2
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Custom Error Handler Library in C++
Is this code clean and optimized? When taking memory snapshots, it seems a bit high.
Anything I have done wrong or can do to optimize it?
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Access object initialized within try block afterwards if no exception occured
I have a use case where I try to initialize a Player object within a try block.
The relevant excerpt of the current, working ...
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Should i throw exceptions in the service layer or repository, and catch it on the controller? [closed]
I read some answers here on stack exchange, but none really "hits the nail on the head" about where to throw exceptions, where I shouldn't and where to catch them.
the idea that an exception ...
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C ArrayList implementation
I have written a ArrayList class in C and I just wanted some criticism on what I can improve on. Any criticism helps, and I was wondering if there is any better way of doing error handling other than ...
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Rethrowing unhandled exceptions later in the catching method [closed]
I have a worker class that catches uncaught exceptions and logs them for tracking purposes. However, I do NOT want to swallow those exceptions, nor do I want to abstract them (i.e. losing the stack ...
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3
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ArrayDowncasters Implementation for Downcasting from System.Array to Array of Specific Type in C#
I am working with System.Array and I am trying to convert System.Array objects to array of specific type (such as ...
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1
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Parsing a u8 separated vector of FromStr from a BufRead
I need to read a vector of e.g. integers from a stream, usually from stdin but sometimes also from a file. The input is always less than a megabyte, and is sometimes separated by commas and sometimes ...
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Read and sort 100 numbers from a text file
The program itself reads 100 values from a text file named input.txt. Then sorts those values in ascending order and writes the values to a new file called ...
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Create Table After Deleting Rows Before Desired Range and Filter to Delete All Other Unnecessary Rows
The code below first searches for the first searchText and deletes all rows that precede it to establish a range for a table object. Once the table object is ...
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1
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C++ custom exception handling using std::error_category and std::system_error
I want to make my own custom exception handling and I am curious if I am going the right path, maybe some of you could suggest to me how I could improve it? Or maybe I have went the wrong direction? (...
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2
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Library displaying a format with runtime errors, exceptions, and error exceptions present
I have this Library to control errors; I would like if you can evaluate it and make a review of the code, not about the goals of the library:
Everything works for me correctly, but I am also open to ...
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C++ Error/exception handling [closed]
I know the following code are horrible, so I'd like a review. Criticism are welcome. I want to know what went wrong, and how I can avoid the same mistake in the future.
Version 1
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2
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1
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Modify original JSON few times and post http request
Follow up question from here.
I am working on a project where I need to do below things in Python:
Take few input parameters like - environmentName, ...
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1
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Post json using http and verify whether all actions completed successfully or not
I am working on a project where I need to work with http apis and call them using Python language. Below is what I need to do:
Take few input parameters like - <...
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