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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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+1 −2
Objection CLI - SVM Conception - Freezing prompt

Now I build a Python script to execute automaticaly a dynamic analysis on apk and I block because I use this library and call objection. When I run my script, the objection command creates an inst...

0 answers  ·  posted 3y ago by Link213‭  ·  edited 3y ago by Alexei‭

python python-3 monkeyrunner
36%
+2 −5
What problem does innerHTML solves?

I understand that innerHTML does all the following actions: It makes the element we work on (or even the entire DOM tree that we work on if that element is <body>) to be copy-pasted into a...

1 answer  ·  posted 3y ago by deleted user  ·  edited 3y ago by deleted user

javascript
62%
+3 −1
Are there practical reasons for designing a method-only class/object?

Are there practical reasons for designing/implementing a method(s)-only class/object? Follow-up background notes: This question is for languages that are not exclusively Object-Oriented, for exam...

3 answers  ·  posted 3y ago by CodeFarmer‭  ·  last activity 3y ago by hkotsubo‭

software-practices oop
22%
+0 −5
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 3y ago by Anonymous‭  ·  edited 3y ago by Anonymous‭

java package
28%
+0 −3
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 3y ago by Anonymous‭

c++ plot
50%
+0 −0
Why some items aren't clickable in RecyclerView?

if (type=="dialer") { String timestamp = list.get(position).get(Constants.DATE); holder.txtTimestamp.setVisibility(View.VISIBLE); holder.imgDelete.s...

0 answers  ·  posted 3y ago by Anonymous‭

java android recycler-view
36%
+2 −5
What is the main difference between event delegation to other event handling patterns in JavaScript?

I define a software event as any state of a program to which we can probably respond. In JavaScript, how does event delegation differs from more simple and probably more common event handling patt...

1 answer  ·  posted 3y ago by deleted user  ·  edited 3y ago by Alexei‭

javascript event event-handling
22%
+0 −5
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 3y ago by Anonymous‭  ·  edited 3y ago by Alexei‭

svg margin
60%
+1 −0
WARNING: environment variable DISPLAY is not set (netbeans)

I was trying to install Netbeans in Xubuntu. I had installed Netbeans using Snapd. sudo snap install netbeans --classic I was trying to start Netbeans then I got an error which was looking like...

1 answer  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by Anonymous‭

java netbeans installation xubuntu
20%
+0 −6
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 3y ago by General Sebast1an‭  ·  edited 3y ago by Lundin‭

python interpreted-language language-design math
87%
+12 −0
What compiler options are recommended for beginners learning C?

When reading questions about C programming from beginners, I very often see them describing peculiar run-time errors and crashes, segmentation faults and similar. They have spent a lot of time chas...

1 answer  ·  posted 4y ago by Lundin‭  ·  edited 3y ago by Lundin‭

c compiler compiler-errors compiler-warnings compiler-options
75%
+4 −0
Get the length of a slice from a multi-dimensional array

If I have a one-dimensional array, I can get the length of it quite easily: var x = moves.Length(). However, if the array is multi-dimensional, .Length() returns the total number of elements. If ...

2 answers  ·  posted 3y ago by FrankLuke‭  ·  last activity 3y ago by FoggyFinder‭

c# array multidimensional-array
60%
+1 −0
can't find git repo (library)

Could not find com.github.Kunzisoft:Android-SwitchDateTimePicker:1.9. Required by: project :app Search in build.gradle files I was trying to use the library. I had searched for 2.1, 2.0 a...

1 answer  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by Anonymous‭

android gradle
33%
+0 −2
Why comma is expected for auto_increment?

query = "CREATE TABLE "+TABLE+" ("+COLUMN1+" INTEGER PRIMARY KEY NOT NULL AUTO_INCREMENT, "+COLUMN2+" VARCHAR(255), " + COLUMN3+" VARCHAR(255), "+COLUMN4+" TEXT, "+ COLUMN5+" VARCHAR(255)...

1 answer  ·  posted 3y ago by Anonymous‭  ·  edited 3y ago by Alexei‭

auto-increment sqlite syntax
60%
+1 −0
Why is the switch statement not executing the correct case blocks?

In the code below, the value of order variable should change according to i's value: String order; switch (i){ case 0: order = CallLog.Calls.DATE + " DESC "; contactViewAda...

1 answer  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by hkotsubo‭

java android switch-statement
66%
+2 −0
What's the better way to store base64 in SQLite Database?

What's the better way to store base64 in SQLite Database? I was thinking to put base64 as TEXT since base64 has lots of chars. CREATE TABLE name (id INTEGER PRIMARY KEY AUTO_INCREMENT, image TEXT)...

1 answer  ·  posted 3y ago by Anonymous‭  ·  edited 3y ago by Anonymous‭

sql base64 sqlite
60%
+1 −0
How can I export metrics from Angular frontend to be read with Prometheus ?

How can I monitor an Angular frontend with Prometheus? I was able to create metrics for my Node.js API using the express-prometheus module. But I can't find any Angular/Prometheus integration. Basi...

0 answers  ·  posted 3y ago by nelson777‭  ·  edited 3y ago by Peter Mortensen‭

javascript prometheus metrics
57%
+2 −1
How to append HTML to the DOM with JavaScript?

I have a .html file containing only the following data, and I keep that file on top of my website's directory. <link rel="stylesheet" href="./css/mobile_general_structure.css"></link> ...

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

javascript html dom
40%
+0 −1
How to load two or more files in one AJAX call?

In my browser's JavaScript console I can add to the <body> element one file (index.html) with the following AJAX code: const whereToLoad = document.querySelector("body"); const ajax = new X...

0 answers  ·  posted 3y ago by deleted user  ·  edited 3y ago by deleted user

ajax
36%
+2 −5
What are the disadvantages of using static methods in Java?

I was using static method few moments ago. But I noticed that I was returning a variable using that static method. According to the article, Static is a keyword that identifies the class-related...

4 answers  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by hkotsubo‭

java static class
57%
+2 −1
What's the minimum API level for activity transition?

I was trying to show transition on activity changes. I had followed two method from SO. I lost those link so I can't add them here. My first method was I had used overridePendingTransition on onCr...

1 answer  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by Anonymous‭

java android android-api-levels android-5.0-lollipop
50%
+0 −0
What should I use instead of managedQuery?

managedQuery is recently deprecated. ManagedQuery was used for using Cursor. What should I use since managedQuery was deprecated? Without it, I can't work with Cursor. So there must be alternative ...

1 answer  ·  posted 3y ago by Anonymous‭  ·  edited 3y ago by Alexei‭

java android android-cursor
60%
+1 −0
Why ArrayList is always same value in only Adapter?

This is the worst bug I have ever seen.. I was fetching CallLogs following way. ArrayList<HashMap<String, String>> callLog= new ArrayList<>(); HashMap<String, Strin...

1 answer  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by Anonymous‭

java android arraylist
60%
+1 −0
event_start always returning contact number in android

Why ContactsContract.CommonDataKinds.Event.START_DATE always returning contact number. The number is available in Google Contacts. Here what I am doing... Cursor c; if (contactID==""...

0 answers  ·  posted 3y ago by Anonymous‭

java android android-contacts
82%
+12 −1
Why is it considered bad practice to use float for representing currency?

This is intended to be a canonical post for this problem which is pretty common. Especially among beginners. I've heard that I should avoid using floating point variables for representing curren...

2 answers  ·  posted 3y ago by klutt‭  ·  last activity 3y ago by klutt‭

integer floating-point currency
50%
+0 −0
What's the alternative of "ContactsContract.Contacts.LAST_TIME_CONTACTED"?

What should I use instead of ContactsContract.Contacts.LAST_TIME_CONTACTED? According to documentation, LAST_TIME_CONTACTED variable was deprecated. Even it was written in ContactsContract.class /...

0 answers  ·  posted 3y ago by Anonymous‭  ·  edited 3y ago by Anonymous‭

java android android-contacts
71%
+3 −0
What does android:ems do?

What does ems in xml do? I saw that I was using following line in EditText. But, I never thought what it does. I was trying to check what actually it does by removing the line. I couldn't see any d...

1 answer  ·  posted 3y ago by Anonymous‭  ·  edited 3y ago by Alexei‭

fonts android em
50%
+0 −0
Executing a PHP HTML-CSS container on top of various content management systems

I have created two PHP modules, one is a contact form module and one is a a sticky "call now" module. I can access the contact form by example.com/contact_form.php but in contrast, example.com/cal...

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

php webserver content-management-system embedding
80%
+6 −0
Python Regex to parse multiple "word. word. word."

I'm trying to parse lines like "THIS. THAT..OTHER " so that "THIS. THAT." is found. There can be more than one <word><dot> separated by a space except no space after the last one. ...

2 answers  ·  posted 4y ago by CodeFarmer‭  ·  last activity 3y ago by hkotsubo‭

python regex
60%
+1 −0
Find image for contact list in Android Java

How to get image of contact list? I was using cursor to get contact list. Here how it looks like. ArrayList<HashMap<String, String>> contactList = new ArrayList<>(); Has...

1 answer  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by Anonymous‭

java android android-cursor android-contacts
25%
+0 −4
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 3y ago by aditya98‭  ·  closed 3y ago by Alexei‭

git sftp
37%
+1 −3
What's the better way to deal with deprecated feature?

It's a very old question came to my mind. Whenever I start building some applications for Android using Android Studio. In every update, lots of tools get deprecated. I know I can use deprecated "t...

0 answers  ·  posted 3y ago by Anonymous‭  ·  edited 3y ago by Anonymous‭

android deprecated
81%
+7 −0
Is it a good idea to have a permanent branch for a feature?

I'm rather new to using git, so I'm not sure about the best practices regarding it. I have a feature branch branched off, and periodically when the feature needs to be updated I will add some commi...

3 answers  ·  posted 3y ago by Moshi‭  ·  last activity 3y ago by Hyperlynx‭

git software-practices
33%
+0 −2
How to break line in XML?

How to break line in XML? I was trying to follow the answer. But, It wasn't helpful for me. I had tried <br/> and <br />. None of them works. <?xml version="1.0" encoding="UTF-8"?&g...

0 answers  ·  posted 3y ago by Anonymous‭  ·  edited 3y ago by Anonymous‭

xml line-breaks
40%
+0 −1
How to initialize variable assignment in a non-OOP interpreter?

I'm still in the process of making MarkFuncs and having given up from copy-pasting open-source interpreters, them using OOP too, I decided to make one without OOP and with scratch alongside with th...

1 answer  ·  posted 3y ago by General Sebast1an‭  ·  last activity 3y ago by Canina‭

python variable-assignment interpreted-language
71%
+3 −0
How to make the text box such that its placeholder goes up and arranges itself in the centre of the border upon clicking?

How to make the placeholder so that it goes to the top of the border line on click? For example, when you go to Gmail and click on the input field, the placeholder text goes up and arranges itself...

1 answer  ·  posted 3y ago by nobodyImportant‭  ·  edited 3y ago by hkotsubo‭

javascript html css
60%
+1 −0
What input functions can I use in TIO's PHP?

Try It Online! is an online interpreter for many supported languages, including PHP. I'm trying to solve coding challenges using the language, specifically "Hello, {name}!". In PHP, you can litera...

1 answer  ·  posted 3y ago by General Sebast1an‭  ·  last activity 3y ago by hkotsubo‭

php function input
60%
+1 −0
How to properly manage PGP signing key storage, access, and usage for dev and automation?

I work for an IoT company. We recently got secure boot to work for a customer-visible product. For secure boot to work, the images we generate must be signed. Obviously, we want customer-visible sy...

0 answers  ·  posted 3y ago by ghost-in-the-zsh‭  ·  edited 3y ago by ghost-in-the-zsh‭

security gnupg key-management ubuntu-server pgp
71%
+3 −0
Credentials for multiple tenants with Azure.Identity

Situation: I have an Azure account which has management permissions for various subscriptions in various directories (tenants). I have a GUI tool to do various management tasks whose details are ir...

0 answers  ·  posted 3y ago by Peter Taylor‭

c# authentication azure
60%
+1 −0
Error: Cannot find module 'is-color-stop' in Tailwind CLI

While compiling the code for production in Tailwind CLI using: npx tailwindcss -m -o ./build/tailwind.css --purge "./**/*.html" I get: node:internal/modules/cjs/loader:941 const err = new ...

0 answers  ·  posted 3y ago by Kevin M. Mansour‭

npx tailwind-css
60%
+1 −0
Using http.get to get page from frontend

It's possible to use Angular 8 http.get to get a page from the frontend itself ? My local frontend url: https://192.168.0.177:4200/ I tried in a service: test(): Observable<string> { ret...

1 answer  ·  posted 3y ago by nelson777‭  ·  last activity 3y ago by Derek Elkins‭

javascript angular angular8 angular-httpclient keycloak
66%
+4 −1
Is it possible to mutate the DOM directly from HTML, without any JavaScript?

All the ways I know of to mutate a DOM are JavaScript. Just for broadening general knowledge I want to know if there is any common way to mutate the DOM via HTML itself, without involving any Java...

2 answers  ·  posted 4y ago by deleted user  ·  last activity 3y ago by nelson777‭

function html dom
80%
+6 −0
How to read lines into an array in Bash

I wish to fill an array with strings, using Bash scripting. The strings are in a file, one per line. Here is what I've tried: declare -a my_array=() while read line; do my_array+=( "$line"...

3 answers  ·  posted 4y ago by LVx0‭  ·  edited 3y ago by Alexei‭

array bash console stdin
70%
+5 −1
How allocated memory is calculated?

int arr[] = {10,123,14,14,15,16}; cout<<sizeof(arr)/sizeof(arr[0]); I was reading the article. When sizeof() is used with the data types such as int, float, char… etc it simply ret...

1 answer  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by Canina‭

c++ memory
42%
+1 −2
What might happen if I ignore warning?

#include <iostream> using namespace std; int linearSearch(int array[], int n, int key){ for(int i=0;i<=n;i++){ if(array[i]==key){ return i; } } } int main() { int ...

2 answers  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by Lundin‭

c++ function compiler-warnings
71%
+3 −0
setting of translateX for carousel image slider

I made carousel image slider by following tutorials. To slide images , I made the below function. const moveToSlide = (track, currentSlide, targetSlide) => { track.style.transform = 'translat...

0 answers  ·  posted 4y ago by aya2222‭  ·  edited 4y ago by aya2222‭

javascript carousel image transformation
42%
+1 −2
How do I filter an array in C?

No, I'm not trying to get the full program written completely in C by you guys. I only need some way to implement the functionalities of each function I found confusing. In this challenge in Code ...

2 answers  ·  posted 4y ago by General Sebast1an‭  ·  last activity 4y ago by Derek Elkins‭

c javascript array
50%
+1 −1
Nannou model requires a function pointer: How to return a function pointer

Trying to make a nannou app from the template but with a customizable model() function. The template has this main(): fn main() { nannou::app(model).update(update).run(); } The model t...

0 answers  ·  posted 4y ago by telefza‭  ·  edited 4y ago by Alexei‭

rust nannou function-pointers
57%
+2 −1
Function.prototype.call()

I wanted to print to browser console the number of li list items of a given ul list. This didn't work (console output was undefined): console.log(document.querySelectorAll(".example").length); ...

1 answer  ·  posted 4y ago by deleted user  ·  edited 4y ago by Alexei‭

javascript function prototype
57%
+2 −1
How to include HTML files in another HTML file with vanilla Javascript?

I develop an HTML-CSS-JavaScript-PHP contact form and I have a large HTML file which is very long and very wide (lots of horizontal scrolling due to nesting) and it's hard for me personally to work...

0 answers  ·  posted 4y ago by deleted user  ·  edited 4y ago by Alexei‭

javascript html include