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Q&A

Welcome to Software Development on Codidact!

Will you help us build our independent community of developers helping developers? We're small and trying to grow. We welcome questions about all aspects of software development, from design to code to QA and more. Got questions? Got answers? Got code you'd like someone to review? Please join us.

General Q&A about programming, scripting, software design & architecture, process, tools, testing, and more.

Filters (None)
84%
+9 −0
memcmp(3) memory containing invalid values

What does it mean that we can use memcmp(3) on invalid values? ISO C allows comparing an invalid value through memcmp(3), because it doesn't read the value, but rather its representation, and "rea...

2 answers  ·  posted 1y ago by alx‭  ·  last activity 1y ago by Lundin‭

81%
+7 −0
How to verify if a year is leap in Java?

How to verify if a year is leap? Given a numeric value (such as 2023) or some object that represents a date (such as Date, Calendar, LocalDate, etc), how can I do it?

1 answer  ·  posted 1y ago by hkotsubo‭  ·  last activity 1y ago by hkotsubo‭

60%
+1 −0
How to import a vocabulary's test file in factor.

For example: I have noticed that this does not work for any vocabulary's tests. What is the alternate way to USE: these test vocabularies? EDIT: The test word appears to run all tests alongside...

0 answers  ·  posted 1y ago by Razetime‭  ·  edited 1y ago by Razetime‭

83%
+8 −0
How to define an object with different subclasses in an if-statement?

Note: I asked this question on TopAnswers a couple weeks ago, but didn't get any response, so I figured I'd ask it here. I am currently learning C++. I have a parent class (Vehicle) and two subc...

1 answer  ·  posted 1y ago by Trevor‭  ·  edited 1y ago by Alexei‭

66%
+2 −0
TeamCity build variables

I want to pass a variable to TeamCity (on prem) to choose between deployment environments (there are 14 of 'em - don't ask) when running a TC deployment configuration build which uses a PowerShell ...

1 answer  ·  posted 1y ago by mcalex‭  ·  edited 1y ago by Alexei‭

71%
+3 −0
Python Parallel plotting and and input reading

Hello everyone, I am seeking help with understanding why multithreading does not work correctly in this example: import time import matplotlib.pyplot as plt import concurrent.futures voltage...

1 answer  ·  posted 1y ago by kek‭  ·  edited 1y ago by kek‭

22%
+0 −5
What factors should be considered when choosing web security measures for a site? [closed]

What factors should be considered when choosing web security measures for a site?

0 answers  ·  posted 1y ago by Andrew‭  ·  closed 1y ago by Mithical‭

75%
+4 −0
How to programmatically get current wallpaper file path?

I have written a screensaver program that, in part, uses the current wallpaper for some visual effects. However, finding the current wallpaper in different operating systems and environments is les...

1 answer  ·  posted 1y ago by ghost-in-the-zsh‭  ·  last activity 1y ago by ghost-in-the-zsh‭

22%
+0 −5
Solution E-Commerce de Paiement [closed]

Salut, quelle solution de paiement e-commerce avec 0% de commission me proposerez vous ?

0 answers  ·  posted 1y ago by Bicano‭  ·  closed 1y ago by Monica Cellio‭

60%
+1 −0
Relayout call does not work on button click in Factor

I am currently using this code to display a GUI counter: USING: accessors arrays fonts kernel math math.parser ui ui.gadgets ui.gadgets.buttons ui.gadgets.editors ui.gadgets.labels ui.gadgets.pa...

0 answers  ·  posted 1y ago by Razetime‭  ·  edited 1y ago by Razetime‭

60%
+1 −0
How to find the existing default action for a UI gadget in factor

For a UI gadget like a $link in Factor, a click automatically opens the page that it points to. I want to know where this default behaviour is defined. In the factor documentation, there are many ...

1 answer  ·  posted 1y ago by Razetime‭  ·  last activity 1y ago by Razetime‭

37%
+1 −3
We app is terminated automatically at Windows server

I've my go app the is running a web API and working smoothly at my laptop. I read this and completed the IIS setup using a config file: <configuration> <system.webServer> ...

0 answers  ·  posted 1y ago by hyousef‭

83%
+8 −0
Is partial allocation of an object Undefined Behavior?

Is it valid to partly allocate an object, as long as you only use the allocated part of it? #include <stdio.h> #include <stdlib.h> struct s { int i[100]; }; int main(void) {...

1 answer  ·  posted 1y ago by alx‭  ·  last activity 1y ago by Lundin‭

71%
+3 −0
Strict aliasing rules and function boundaries

Let's analyze this code, assuming an architecture where the alignment of int64_t is the same as that of double: void bar(double *f, int64_t *j) { *(int64_t *)f = *j; } void foo(void) ...

1 answer  ·  posted 1y ago by alx‭  ·  edited 1y ago by Lundin‭

50%
+1 −1
Rest service doesn't find @GET Method (Jersey Rest service in Gradle).

I have to implement a JSON based REST web service for querying literature. Ordinary users should be able to query data and process it in their clients. The "main user" can adapt database entries vi...

0 answers  ·  posted 1y ago by Gagamelius‭  ·  edited 1y ago by Alexei‭

25%
+0 −4
queryselector for all does not select the specified css selectory [closed]

I tried using query selector but it does not work heres my HTML code: <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>JS + CSS Clock&lt...

0 answers  ·  posted 1y ago by Ansh‭  ·  closed 1y ago by Alexei‭

75%
+4 −0
What's causing mypy to give an `[assignment]` error in this nested for loop?

I started adding types to my (working) solution to Exercism's "Kindergarten Garden" exercise, to learn how typing with python and Mypy (strict) works. While doing so, I ran into a Mypy error that I...

2 answers  ·  posted 1y ago by true_blue‭  ·  last activity 1y ago by Moshi‭

71%
+3 −0
How to inject environment configuration values when deploying an Angular application in Kubernetes or similar infrastructure?

Context I am currently migrating a Web application from on-prem infrastructure to K8s. The legacy infrastructure relies on defining some tokens in the configuration files and these are replaced d...

2 answers  ·  posted 1y ago by Alexei‭  ·  last activity 1y ago by Derek Elkins‭

75%
+4 −0
Dealing with code maintenance when saving a large and complex entity in a single business transaction

Context I am currently working on migrating a legacy application to an ASP.NET Core + Angular application. The Web API's main project is based on Jason Taylor's template (clean architecture) and a...

1 answer  ·  posted 1y ago by Alexei‭  ·  last activity 1y ago by r~~‭

25%
+0 −4
Create self-referencing many-to-many relation

I've turned the tables movies and scenes into media and now I don't know what to do with the movies_scenes relation. CREATE TABLE IF NOT EXISTS "movies_scenes" ( `movie_id` integer, `sce...

1 answer  ·  posted 1y ago by filosoful‭  ·  last activity 1y ago by jimbobmcgee‭

60%
+1 −0
Where is the "Just My Code" debug option in Visual Studio Mac?

Title says it all. I found "Step into external code" but not sure if it's the same feature.

0 answers  ·  posted 1y ago by user34567‭

55%
+3 −2
How to proportionally convert a number in the range of -1 and 1 to a number in the range of 0 and 319

I have float noise values, between -1 and 1, for every x,y coordinate in a 2D area and I am trying to convert that to a whole number between 0 and 319 which represents a vertical z coordinate to re...

3 answers  ·  posted 1y ago by cuzzo‭  ·  last activity 1y ago by Dirk Herrmann‭

33%
+0 −2
How to distinguish between single and multiple file media?

In a media manager I have database tables for files, media and collections. When a user is browsing a collection I want there to be links to see the metadata for single file media like books, movi...

2 answers  ·  posted 1y ago by filosoful‭  ·  last activity 1y ago by r~~‭

81%
+7 −0
Qt Button changes drastically when setting its `border-radius`.

In a Qt application I have nothing more than a window with a button as its direct child. I set its background color and all is fine: Window::Window(QWidget *parent) : QWidget(parent) { but...

1 answer  ·  posted 1y ago by Quasímodo‭  ·  last activity 1y ago by r~~‭

22%
+0 −5
Replit particles push instead of being background [closed]

I am working on a replit https://AppropriateMessyRoutes.ozabramo.repl.co and I am trying to implement https://github.com/VincentGarreau/particles.js as a background but I keeps on pushing every...

1 answer  ·  posted 1y ago by ObviousPlays‭  ·  closed 1y ago by Alexei‭

28%
+0 −3
Built-in way to compute coefficient of variation in pandas

Background The coefficient of variation is: defined as the ratio of the standard deviation to the mean Question Is there a built-in function for this? Tried I know I can do df.std() / df...

1 answer  ·  posted 1y ago by mcp‭  ·  last activity 1y ago by cuzzo‭

66%
+2 −0
How would I avoid textures being blurred when mapped to a TriangleMesh?

I am making a game using JavaFX and the Fxyz library. I have chunks which are made of Point3D's, these points are then passed to a ScatterMesh and that is used to generate a TriangleMesh so I can m...

0 answers  ·  posted 1y ago by cuzzo‭  ·  edited 1y ago by Alexei‭

30%
+1 −5
Haskell revision question. [closed]

The answer for this question is that there is something wrong with the expression of the first guard of this function below: congratulations :: [(String, Int)] -> [String] congratulations [] =...

0 answers  ·  posted 1y ago by Anonymous‭  ·  closed 1y ago by Alexei‭

22%
+0 −5
How should I deploy my Full Stack Angular Application (MEAN Stack) project on free hosting website? [closed]

How should I deploy my Full Stack Angular Application (MEAN Stack) project on free hosting website? Github I have provided below the github link of the project for the better understanding. Prob...

0 answers  ·  posted 1y ago by mrsilenttradeguy‭  ·  closed 1y ago by Alexei‭

50%
+2 −2
What does this function definition mean in Haskell?

What does this function definition mean in Haskell? fn x [] = [] fn x (True:ys) = x : fn x ys fn x _ = []

1 answer  ·  posted 1y ago by Anonymous‭  ·  last activity 1y ago by r~~‭

66%
+2 −0
How can I upload images or files to strapi using graphQl

How can I upload images or files to strapi using graphQl. I'm using Cloudinary as the image provider. The strapi admin panel works fine, uploads the images to cloudinary. But, when using graphQl m...

0 answers  ·  posted 1y ago by Phtremor‭

75%
+4 −0
How would I fix my IntelliJ IDE? It cannot open and re-installing does not work.

So I was looking around for some async solutions and I found one on github, https://github.com/electronicarts/ea-async I follow the setup instructions for maven. Only to realize it didn't work (I ...

1 answer  ·  posted 1y ago by cuzzo‭  ·  last activity 1y ago by cuzzo‭

33%
+0 −2
Deep linking from another app isn't working for Amazon prime and disney+hotstar

It's not possible to send data to amazon prime and disney+hotstar. I was trying to send user to amazon prime when they click a (video) link (e.g. https://www.amazon.com/gp/video/detail/B01MSPI8JN/r...

1 answer  ·  posted 1y ago by billy‭  ·  last activity 1y ago by billy‭

71%
+3 −0
How do you insert a struct into a hive table column using HiveRunner?

If my struct column has the data type of struct<string, integer> then what should be the equivalent java object that should be inserted into that struct column? I'm trying the following code...

1 answer  ·  posted 1y ago by Abbas Gadhia‭  ·  last activity 1y ago by Abbas Gadhia‭

28%
+0 −3
How would I go about chunk loading around player in a 3 dimensional cartesian coordinate space [closed]

So I am in the process of creating a voxel sandbox survival game (minecraft clone) in javaFX. I am at a point where I need to come up with a way to load the chunks in my surrounding given a render ...

1 answer  ·  posted 1y ago by cuzzo‭  ·  closed 1y ago by cuzzo‭

50%
+1 −1
Why does my code show an error at deriving (eq)? (SOLVED) NEW ERROR: At SimpleEnigma & SteckeredEnigma constructors which I need help on :")

Hi, I'm trying to code an Enigma machine in Haskell which were used by the German in WWII to transmit coded messages. An Enigma Machine consists of 3 rotors which are substitution ciphers and a re...

1 answer  ·  posted 1y ago by Anonymous‭  ·  last activity 1y ago by Alexei‭

42%
+1 −2
Why OFFSET isn't working the way it is expected?

I had three data with where gender=female. I was trying to call those data with limit and offset (Since in future there might be more than 1000 data). SELECT * FROM `users` WHERE `gender`='Female'...

1 answer  ·  posted 1y ago by billy‭  ·  edited 1y ago by Alexei‭

71%
+3 −0
How to write a macro that discards the const qualifier, for any type?

How to write a macro that discards the const qualifier, for any type? I hope some combination of typeof and a cast will do, but haven't found the combination. I tried this, without luck: #define...

2 answers  ·  posted 1y ago by alx‭  ·  last activity 1y ago by alx‭

71%
+3 −0
highlight.js 3rd party plugin error: Cannot read properties of undefined

Highlight.js version: 11.6.0 Node version: v18.12.0 npm version: 8.19.12 When I provide a plugin with the following code to highlightjs (full code is at github): /* Language: BQN Requires: A...

1 answer  ·  posted 1y ago by Razetime‭  ·  last activity 1y ago by Razetime‭

66%
+2 −0
Why is IntelliJ not finding these modules?

So to preface I started a new JavaFX project in IntelliJ and all of this is from what was auto-generated out of the box. The modules I'm having trouble with are Edit to make this post more query...

1 answer  ·  posted 1y ago by cuzzo‭  ·  last activity 1y ago by cuzzo‭

37%
+1 −3
Java cannot find class within same package

I've written a class object, QueueObject, but when I try to construct it inside of my main class, it says it cannot find the symbol on compilation. I've read lots of pages saying how misspellings o...

1 answer  ·  posted 2y ago by cuzzo‭  ·  last activity 1y ago by cuzzo‭

33%
+0 −2
Where do I get rotatable images of solar system planets? [closed]

What I'm trying to do, because it's to provide a visually exciting set of results for a simulation package, is given a time, show what a planet looks like from a given angle. I've got SPICE and I'...

0 answers  ·  posted 1y ago by Fred Wamsley‭  ·  edited 1y ago by Alexei‭

60%
+1 −0
Datagrid in MVVM saves edits but not inserts

I am writing a todolist application in WPF with MVVM. I display the goals in a datagrid and the editing works fine. Changes made in the grid are saved to the DB when I click save. However, adding a...

1 answer  ·  posted 1y ago by FrankLuke‭  ·  last activity 1y ago by Alexei‭

77%
+5 −0
Any testimonials for any C++ units of measure library?

The question is about libraries that extend the data type system to ensure physically realistic computations. Think std::chrono but for distance and mass and other things as well as for time. Inste...

1 answer  ·  posted 1y ago by Fred Wamsley‭  ·  last activity 1y ago by Ben‭

50%
+0 −0
How to define Polly policies when working with Refit library in ASP.NET Core?

Note: this is based on my question on SO and subsequent activity there I am trying to add resilience using Polly to HTTP calls that are performed using Refit library. I am using the Refit factory...

1 answer  ·  posted 1y ago by Alexei‭  ·  last activity 1y ago by Alexei‭

33%
+0 −2
App crashes/ implementing picture in picture mode to timer

When I tried to emulate the app that I coded in the connected phone, it keeps closing due to crashes, is there any problem with my code? Also, I am trying to make a timer app with picture and pict...

0 answers  ·  posted 1y ago by dkdkjoi‭  ·  edited 1y ago by Alexei‭

25%
+0 −4
how do i fix this code [closed]

this is my build.gradle.app file: plugins { id 'com.android.application' } android { compileNdk flutter.compileNdkVersion compileOptions{ sourceCompatibility Ja...

0 answers  ·  posted 1y ago by LSHpqr‭  ·  closed 1y ago by Alexei‭

60%
+1 −0
How to refer to the same class twice from one Entity Framework entity?

I have two classes, Contestant and Picture, with the following setup: public class Contestant { ... public int AvatarID { get; set; } [ForeignKey(nameof(AvatarID))] public ...

1 answer  ·  posted 1y ago by FrankLuke‭  ·  edited 1y ago by Alexei‭

66%
+2 −0
Using Lua's `os.rename` to rename a file from a hard drive to a new location on a USB flash drive

I'm using the os.rename function in a lua script. It works perfectly fine for renaming files on my hard drive, e.g. os.rename("test.txt","/Users/username/Desktop/test2.txt") will rename the fil...

1 answer  ·  posted 1y ago by samcarter‭  ·  last activity 1y ago by Peter Taylor‭

42%
+1 −2
How to generate random objects at different locations on x, y, z axis

I have been trying to generate a random object on all three axis in different locations. However, Vector3 doesn't accept that many overloads e.g: Vector3 spawnPos = new Vector3(Random.Range(spawnL...

1 answer  ·  posted 1y ago by simonJN‭  ·  last activity 1y ago by deleted user