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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)
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Help with android studio gradle [closed]

I need help figuring out if my dependencies need upgrading or conflict with each other. I tried using the command prompt to solve problems but it didn't help. Here is my code. Android Studio Iguan...

0 answers  ·  posted 7mo ago by dnmnbg‭  ·  closed 7mo ago by Alexei‭

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+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

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How can software track [1] how many subscribers to subreddits, [2] if subreddit is private, [3] if submissions are restricted?

Master lists like 82 food subreddits and 128 tech subreddits don't indicate each's subscribers. if it's private. Sometimes moderators can make the sub private for several days, to clean i...

1 answer  ·  posted 3y ago by TextKit‭  ·  last activity 3y ago by r~~‭

30%
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Explaining the result of an arithmetic expression in JavaScript

I misunderstand why the following code outputs -1 in console. x = 42; x = (x == 42) * -1 + (x != 42) * x; -1 Due to Type Coercion, the comparison of x to 42 yields true and is thus transl...

2 answers  ·  posted 2y ago by deleted user  ·  edited 2y ago by Alexei‭

28%
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What is [{options}] in JavaScript?

I am trying to understand this code: const iframes = iFrameResize( [{options}], [css selector] || [iframe] ); The code can be found in this documentation. Is [{options}] an array of objects an...

1 answer  ·  posted 2y ago by deleted user  ·  last activity 2y ago by hkotsubo‭

28%
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C++ exit code -1073740940 [closed]

What means the exit code -1073740940 in C++?

2 answers  ·  posted 2y ago by always_improve‭  ·  closed 2y ago by Alexei‭

28%
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How to make this treewalker code having a regular for loop or a forEach() method?

Credit for User:Meriton for developing the following code (first published here). function replaceIn(e) { if (e.nodeType == Node.TEXT_NODE) { e.nodeValue = e.nodeValue.replaceAll("a", "");...

1 answer  ·  posted 2y ago by deleted user  ·  edited 2y ago by Alexei‭

28%
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Need help in migrating a Python2 custom middleware to current Python3 version

class ExtendUserSession(MiddlewareMixin): """ Extend authenticated user's sessions so they don't have to log back in following 15 minutes (set by Django's default `SESSION_COOKIE_A...

0 answers  ·  posted 2y ago by roronoa_zoroDR‭  ·  last activity 1y ago by Monica Cellio‭

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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

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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

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How to implement "Loss leader" marketing pattern in ecommerce websites? [closed]

Loss leader is a marketing pattern implemented in stores: A customer enters a store and while heading to some most desired expensive products far from entrance, that customer picks some products s...

0 answers  ·  posted 2y ago by deleted user  ·  closed 2y ago by Alexei‭

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Data structure implementation with Linked lists.

Could someone explain this part of the coding for data structures & linked list? I actually got this code from a textbook but no matter how I read the textbook, I still don't get the concept &a...

1 answer  ·  posted 2y ago by hamburgersarecool‭  ·  last activity 2y ago by Alexei‭

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Why would a form value inserted with value property won't be effective? [closed]

In a website I didn't build, I want to put a value in an HTML input field element with JavaScript and to also use it as-putted. I can put it with the browser console this way: document.querySelec...

1 answer  ·  posted 2y ago by deleted user  ·  closed 2y ago by Alexei‭

28%
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Storing input from different frontend webpages of a multi page contact form

I consider to create a multi page contact form in which there is one backend page but about 5 front-end pages (stage 1-5). Pages 1-4 are input pages and page 5 is for a submit button and a success ...

1 answer  ·  posted 3y ago by deleted user  ·  last activity 3y ago by elgonzo‭

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How to plot in C++?

I was trying to plot using following lines in C++. #include "koolplot.h" int main() { plotdata x(-6.0, 6.0); plotdata y = sin(x) + x/5; plot(x, y); return 0; } When I was...

0 answers  ·  posted 2y ago by Anonymous‭

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What makes a software module an "authentication" module?

As I don't have any significant experience with internationally-standard information security literature, I would like to ask here if some international information security organization took the i...

2 answers  ·  posted 3y ago by deleted user  ·  last activity 3y ago by nelson777‭

27%
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How can I combine every (number) of pictures and create multiple panorama images, just once? [closed]

Pre-suppose I have pictures numbered 1 to 400. I want to simultaneously combine every 4 pics in 1, so that I end up with 100 collages. Picture 1-4, 5-8, 9-12 ... will be combined. Indubitably it's...

0 answers  ·  posted 3y ago by TextKit‭  ·  closed 3y ago by Alexei‭

25%
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Why storing variables inside a variable?

In the past I have read about the fact that some programmers use a variable to hold two or more variables (instead holding a mere value or an array). There might also be cases when programmers use...

1 answer  ·  posted 2y ago by deleted user  ·  edited 2y ago by Derek Elkins‭

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What does the greater than 0 indicate in the case of this statement 'if (compare(A[j], A[j+1]) > 0)' ? Thank you.

Question: There is a list of integers in an array (3,2,1,5,6,4), sort this list in both ASCENDING & DESCENDING order. Create a sort function. #include<stdio.h> #include<stdlib.h> ...

1 answer  ·  posted 2y ago by dumplings‭  ·  last activity 2y ago by Lundin‭

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What is the difference between a decoupled, Headless and RESTful content management system?

By means of content management system architecture, Is the implementation of decoupling architecture (backend and frontend separation), headless architecture and Representational State Transfer (R...

1 answer  ·  posted 2y ago by deleted user  ·  last activity 2y ago by Canina‭

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Ajax pattern to send email with a backend file to store an email address

I use the following backend (PHP) pattern to send email. I consider to start sending email by Ajax but I would still need to store my email address in some backend file (say, a PHP file) so it won...

0 answers  ·  posted 2y ago by deleted user  ·  edited 2y ago by deleted user

25%
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Unable to boot from manjaro usb key [closed]

Unable to boot from manjaro usb key it looks like it is due to secure boot how can I do it without disabling the secure boot

0 answers  ·  posted 2y ago by hedibensaid‭  ·  closed 2y ago by Alexei‭

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Unable to boot from popos usb key [closed]

Hi How can I boot from usb key containing popos system without disabling secure boot in bios ? thanks

0 answers  ·  posted 2y ago by hedibensaid‭  ·  closed 2y ago by Alexei‭

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Does a for...of loop must contain a variable without assignment sign, and why?

The following code pattern reflects this answer. This code contains a for...of loop: for (const child of e.childNodes) { // Do stuff; } Does a for...of loop must contain a variable without...

1 answer  ·  posted 2y ago by deleted user  ·  edited 2y ago by hkotsubo‭

25%
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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

25%
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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

25%
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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

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Configure port in Gbee.ai [closed]

How do one configure a port in GBee.ai framework.

0 answers  ·  posted 6mo ago by nishnatadat‭  ·  closed 6mo ago by Alexei‭

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How to Select From Multiple images to display main product image? [closed]

Below are the links to code for my project. HTML CSS JavaScript I have created Magnifying Image which was successful now I am trying to add multiple images which can be display in main produc...

0 answers  ·  posted 3mo ago by abhishek27suvarna‭  ·  edited 10d ago by CPlus‭

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Having problems with my php script [closed]

The exam checking for the backend is working perfectly well but the front end keeps saying an error occurred. Am like ok then tried the demo version replaced the javascript and everything i can rep...

0 answers  ·  posted 3mo ago by zick853‭  ·  closed 3mo ago by Mithical‭

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Git deployment vs SFTP deployment [closed]

I personally use git for deploying my hobby projects into cloud like Heroku. I came across the concept of sftp for uploading files. Now please differentiate these two deployments like when to use w...

0 answers  ·  posted 2y ago by aditya98‭  ·  closed 2y ago by Alexei‭

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+1 −8
How to efficiently remove every occurrence of one string inside another

I have two strings and want to remove every occurrence of the second string inside the first one starting from the beginning of the first string and as if each occurrence was removed immediately. ...

1 answer  ·  posted 2y ago by dumplings‭  ·  edited 2y ago by __blackjack__‭

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Why margin isn't working in SVG for path?

<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> <svg version="1.1" id="Capa_1" x="0px...

0 answers  ·  posted 2y ago by Anonymous‭  ·  edited 2y ago by Alexei‭

22%
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Why I am unable to find a class after implementing library also?

I had found a better way to plot in Java. int n = Integer.parseInt(args[0]); // the function y = sin(4x) + sin(20x), sampled at n+1 points // between x = 0 and x = pi ...

0 answers  ·  posted 2y ago by Anonymous‭  ·  edited 2y ago by Anonymous‭

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Adding support on mathematical expressions

MarkFuncs has really gotten huge progress, at least in my eyes, and now, I want to make math possible in the language. Background MarkFuncs is a programming language that I have been working on f...

0 answers  ·  posted 2y ago by General Sebast1an‭  ·  edited 2y ago by Lundin‭

22%
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Are the terms "property" and "method" practical in programming languages other than JavaScript? [closed]

I would say that the terms "property" and "method" are basic in JavaScript programming (at least in the context of web/front), but are they basic or common in other programming languages such as C,...

0 answers  ·  posted 2y ago by deleted user  ·  closed 2y ago by Alexei‭

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What are the types of contact forms?

I get the impression that there are two general types of contact forms: A regular contact form where all fields are in one webpage ; such form might be very long for a potential customer ("too m...

1 answer  ·  posted 3y ago by deleted user  ·  last activity 3y ago by manassehkatz‭

22%
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Ignore code paths

I try to ignore paths in the Codeql code scanning file. But every scan it seems that scanning doesn't ignore these files, do you have any tips?

0 answers  ·  posted 2y ago by fadi‭  ·  edited 2y ago by Alexei‭

22%
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Which body supervises country-specific internet associations and what designations it assigned to these? [closed]

I am trying to save my question that was deleted from "Webmasters StackExchange" for not being about "a problem in a website" which I published there anonymously ; below is a shortened, directly-in...

0 answers  ·  posted 3y ago by deleted user  ·  closed 3y ago by Alexei‭

22%
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Why do you need virtual machines in these examples? [closed]

I added the numbering. It's a virtual machine. Basically, it's one or more computers pretending to be one or more computers. Believe it or not, this is incredibly useful. Say you have som...

0 answers  ·  posted 3y ago by TextKit‭  ·  closed 3y ago by Alexei‭

22%
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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

22%
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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

22%
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AttributeError: module 'azure.cognitiveservices.speech' has no attribute 'VoiceProfile' [closed]

I need to use azure.cognitiveservices.speech. However I am getting this error: Here is code on replit it produces the same error. https://replit.com/@mystickain420/Chatty main -- https://githu...

0 answers  ·  posted 3mo ago by KunningFox‭  ·  closed 3mo ago by Alexei‭

22%
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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

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

20%
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When an FPS game player can look down on the character shehe plays [closed]

I seek help in finding a term common in game development, particularly 3D First Person Shooter games (not at all in 2.5D games such as Doom). I understand that 3D first person shooter games can be...

0 answers  ·  posted 3y ago by deleted user  ·  closed 3y ago by Lundin‭

20%
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What do smaller cloud companies offer that Big Tech clouds don't? [closed]

I don't understand why American Virtual Cloud Technologies, Inc and other similar teeny cloud computing platforms still exist, and haven't either gone bankrupt, or been acquired by one of Big Tech...

0 answers  ·  posted 3y ago by TextKit‭  ·  closed 3y ago by Alexei‭

20%
+0 −6
how to use one list to find a similar list in another list python

I want a way to make it so that I can use list B to find out if a copy of itself exists in list A. listA = ['1', '1', '0', '1', '0', '1', 'down'] 2 ['0', '0', '1', '1', '1', '1', 'up'] 2 ['1', '...

1 answer  ·  posted 1y ago by Solaranfel1366‭  ·  last activity 9mo ago by Alias Cartellano‭

18%
+0 −7
How can I crop white margins, when I print a 1 column Word document as 2 pages per sheet? [closed]

My Word document has just 1 column, and I don't want to convert it into 2 columns. When you command Word to print 2 pages per sheet, Word doesn't let you shrink the white margins. How can I improv...

0 answers  ·  posted 3y ago by TextKit‭  ·  closed 3y ago by Lundin‭

16%
+0 −8
ELI5 these 9 methods to compare similar pictures – Hash, MD5, SHA? [closed]

Please compare and contrast – explain like I'm 5, in SIMPLE English – all 9 methods below? English isn't my first language.

0 answers  ·  posted 3y ago by TextKit‭  ·  closed 3y ago by Alexei‭