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Q&A

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

60%
+1 −0
How to access the visual editor from JavaScript in MediaWiki?

In MediaWiki 1.36.1 with Skin:Timeless, the following JavaScript code doesn't work. I get in browser console: Your skin is incompatible with VisualEditor. See https://www.mediawiki.org/wiki/Exte...

0 answers  ·  posted 7mo ago by deleted user  ·  edited 7mo ago by deleted user

77%
+5 −0
TypeScript is unable to infer the correct type for a mapped tuple

I was playing around with mapped tuples and came across an interesting case where TypeScript cannot infer the types used: interface Foo&lt;A, B&gt; { (a: A, b: B): any } function test&lt;...

0 answers  ·  posted 7mo ago by Moshi‭  ·  edited 7mo ago by Moshi‭

50%
+0 −0
MediaWiki JavaScript way to view the history of a page

I wish to view the revision-history-webpage of a webpage in MediaWiki without the conventional button to do so (I've disabled that button for aesthetic reasons). Please disable the MediaWiki View ...

1 answer  ·  posted 7mo ago by deleted user  ·  last activity 7mo ago by deleted user

25%
+0 −4
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 8mo ago by hedibensaid‭  ·  closed 8mo ago by Alexei‭

25%
+0 −4
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 8mo ago by hedibensaid‭  ·  closed 8mo ago by Alexei‭

81%
+7 −0
Console scripts in virtual environment do not output to terminal in git bash

I have console scripts in my virtual environment in \env\Scripts, installed with packages (e.g. black, pytest, coverage). If I try to execute these in Git Bash, the output is not returned to the te...

1 answer  ·  posted 9mo ago by boudewijn21‭  ·  last activity 8mo ago by boudewijn21‭

66%
+2 −0
Access denied to read SQS queue just created

I've been trying to get Amazon SQS working with the v3 JS client. I've gotten to the point where I can successfully create a queue using the frontend, but the issue starts when I try and send/recei...

1 answer  ·  posted 8mo ago by Darvids0n‭  ·  last activity 8mo ago by Darvids0n‭

50%
+1 −1
Why does a keydown event is listened only once?

The following code (credit for user:hkotsubo) moves the user to another page if Alt+Shift+E are pressed together. window.addEventListener('DOMContentLoaded', () =&gt; { let domain = window.loca...

0 answers  ·  posted 8mo ago by deleted user

75%
+4 −0
Move to the edit webpage of a webpage via the keyboard with vanilla JavaScript

The webpage example.com has an edit webpage (from which one can edit example.com itself). example.com/index.php?title=עמוד_ראשי&amp;action=edit I want that after I click ALT+Shift+E, I would im...

1 answer  ·  posted 8mo ago by deleted user  ·  last activity 8mo ago by hkotsubo‭

75%
+4 −0
What version of runtime environment does a .NET 5 application actually needs?

Our team deals with a legacy application that relies on a rather old deployment process and infrastructure: we deploy the application on an environment very similar to the production called Clon...

0 answers  ·  posted 8mo ago by Alexei‭  ·  edited 8mo ago by Alexei‭

75%
+4 −0
How to set FontFamily for an entire WPF application in a theme?

I have a project Anonymised.Theme which contains XAML resource dictionaries for a theme. This is used by about a dozen applications which simply include it by merging &lt;ResourceDictionary Source...

2 answers  ·  posted 8mo ago by Peter Taylor‭  ·  last activity 8mo ago by aresavatar‭

83%
+8 −0
How to delete contents of a specific field, if it matches a pattern and there is nothing else in the field

How do I delete contents of a specific field, if it matches a pattern, and there is nothing else in the field? I have a several GB tsv file, and I am interested in a specific field (72). If it cont...

3 answers  ·  posted 8mo ago by LVx0‭  ·  last activity 8mo ago by Dirk Herrmann‭

50%
+0 −0
Using single xml file two activities in android

I want use single layout xml file for two different activities in android. Is it possible? How can I do it?

0 answers  ·  posted 8mo ago by akshayshelke‭

50%
+0 −0
How to uncollapse an entire link tree with JavaScript?

This data tree is comprised of clickable buttons and I want to expose all branches, in a single action, instead of clicking each vertical arrow button anew. I have tried the following code which d...

1 answer  ·  posted 8mo ago by deleted user  ·  edited 8mo ago by Alexei‭

50%
+0 −0
In angular-imask how do I get the IMask class?

Using Angular-IMask, I'm programatically updating the field that has IMask. So I'm getting the error: "Element value was changed outside of mask. Syncronize mask using mask.updateValue() to work p...

0 answers  ·  posted 8mo ago by nelson777‭  ·  edited 8mo ago by nelson777‭

40%
+0 −1
How to uncollapse the first and second tiers of a link tree in JavaScript?

I wish to display the first and second branches of a link tree with JavaScript. I want to show these branches in a single action, instead of clicking each vertical arrow (link) anew. HTML examp...

2 answers  ·  posted 8mo ago by deleted user  ·  last activity 8mo ago by hkotsubo‭

86%
+11 −0
Should I check if pointer parameters are null pointers?

When writing any form of custom function such as this: void func (int* a, int* b) Should I add code to check if a and b are null pointers or not? if(a == NULL) /* error handling */ When po...

4 answers  ·  posted 8mo ago by Lundin‭  ·  last activity 8mo ago by Dirk Herrmann‭

80%
+6 −0
Is there a name for a data format like `key[type]=value`?

I'm working on an integration with a proprietary (black box) system. There is some TCP communication that occurs between two microservices. I've managed to sniff the traffic and it's being sent in...

0 answers  ·  posted 8mo ago by Welz‭  ·  edited 8mo ago by Welz‭

77%
+5 −0
Which functions in the C standard library must always be avoided?

It would seem that the C standard library is a collection of diverse functions that pretty much just ended up in the standard by tradition or "accident", rather than through some careful plan or ra...

1 answer  ·  posted 8mo ago by Lundin‭  ·  last activity 8mo ago by Lundin‭

66%
+2 −0
How do I get an animation from another source playing through hovering?

I was tasked with an assignment where I should get a box to move to the 4 corners of the viewport by hovering on a button. Most of the code is already finished except for figuring out how to get th...

0 answers  ·  posted 8mo ago by General Sebast1an‭  ·  edited 8mo ago by General Sebast1an‭

22%
+0 −5
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 8mo ago by fadi‭  ·  edited 8mo ago by Alexei‭

70%
+5 −1
What does a variable followed by parentheses ("ptr()") mean?

What does ptr() mean in this code? #include&lt;stdio.h&gt; #include&lt;stdlib.h&gt; void PrintHello() { printf("Hello\n"); } int Add(int a, int b) { return a+b; } int main...

2 answers  ·  posted 12mo ago by dumplings‭  ·  last activity 8mo ago by Martin Bonner‭

75%
+4 −0
WPF MVVM ListBox not updating

I am trying to combine MVVM in WPF using Microsoft.Toolkit.MVVM. Somethings are working as expected. The text boxes bind to fields and update in both directions. The button command executes and cha...

2 answers  ·  posted 8mo ago by FrankLuke‭  ·  last activity 8mo ago by elgonzo‭

40%
+0 −1
How To Verify Old Password in PHP? [closed]

I have a page to change the user password in my website, this page can only be used if the user have a logged in! The change password page have 3 inputs: Old Password, New Password and Con...

0 answers  ·  posted 8mo ago by rrenildopereiraa‭  ·  closed 8mo ago by Alexei‭

50%
+0 −0
How to get rid of HTML tags and convert entities in SQL Server?

I have to migrate a bunch of text from an old application into a new one. Some of these texts contain HTML tags and entities (HTML editor was used) and now they do not want to support this in the n...

2 answers  ·  posted 9mo ago by Alexei‭  ·  last activity 8mo ago by gbjbaanb‭

71%
+3 −0
Load site based on cookie value in PHP

I need to load a site based on a cookie. I wrote code to validate that, like this. if(!isset($_COOKIE['cookie'])){ $domain = $_SERVER['SERVER_NAME']; setcookie('cookie', $cookie, time() ...

0 answers  ·  posted 9mo ago by hajakutbudeen‭  ·  last activity 8mo ago by Mikesumiines‭

28%
+0 −3
C++ exit code -1073740940 [closed]

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

2 answers  ·  posted 9mo ago by always_improve‭  ·  closed 9mo ago by Alexei‭

75%
+7 −1
How to avoid "exception is never thrown" when commenting out a line while debugging

I have a code block like this: try { ... x.foo(); // This is the line that forces us to have the try block ... } catch (ArrayIndexOutOfBoundsException e) { logger.error(e.getM...

1 answer  ·  posted 9mo ago by klutt‭  ·  last activity 9mo ago by anatolyg‭

60%
+1 −0
Tackling net::ERR_NAME_NOT_RESOLVED and timeout error on browser object creation when using Puppeteer

Used to work with PhantomJS. Want to upgrade to Puppeteer. Started with some code: "use strict"; const puppeteer = require("puppeteer"); const capture = async () =&gt; { let browser; try {...

0 answers  ·  posted 9mo ago by sbirl‭  ·  edited 9mo ago by Alexei‭

71%
+3 −0
Why does pushing to one array affect all the arrays in my two-dimensional array?

I was trying to initialize a simple two dimensional array as follows: const arrays = Array(3).fill([]); However, when I tried to push an entry into one of the arrays, it seems like it gets push...

1 answer  ·  posted 9mo ago by Moshi‭  ·  last activity 9mo ago by Moshi‭

57%
+2 −1
How can the Caesar cipher be implemented in Java?

The Caesar cipher is a substitution cipher in which the letters of an ordered alphabet are cyclically shifted by a given number. A detailed description can be found e.g. here. Let u be the index o...

2 answers  ·  posted 9mo ago by Holden‭  ·  last activity 9mo ago by hkotsubo‭

42%
+1 −2
Mocking methods with arguments

Let's say I have this class I want to mock class A { public void add(T arg) { B b = A.getB(); U val = somefunc(arg); V ret = b.add(val); } } I have a spy o...

3 answers  ·  posted 9mo ago by klutt‭  ·  last activity 9mo ago by klutt‭

40%
+2 −4
unable to create databases in Ruby

I had installed Ruby. rvm install 2.6.6 I had Ruby which version was 3.0.0. I had removed it. Then, installed 2.6.6. When I try bundle install I got no error. When I tried following command...

0 answers  ·  posted 1y ago by deleted user  ·  edited 9mo ago by Alexei‭

71%
+3 −0
Algorithmically generating the grid formed by the vertices of a dodecahedron (Hunt The Wumpus)

I am attempting to write a program to simulate Hunt The Wumpus in the K programming language. The game requires a grid that is created by the vertices of a Dodecahedron, which is cyclic and triangu...

2 answers  ·  posted 9mo ago by Razetime‭  ·  edited 9mo ago by Razetime‭

62%
+3 −1
Comparing two excel files with Python based on changes

I have two tables: Table1: Name Description Amount 123 Description123 123 456 Description456 456 789 Description789 666 101 Description777 101 133 De...

1 answer  ·  posted 12mo ago by sfrow‭  ·  last activity 9mo ago by ibmx‭

62%
+3 −1
How do I strip file extensions from URLs with H2O?

I'm trying to use H2O to serve a multi-file PHP website without routing—just having a separate PHP file for every page. The relevant part of my H2O config currently looks like this: paths: "/":...

1 answer  ·  posted 9mo ago by Ullallulloo‭  ·  last activity 9mo ago by jminer‭

71%
+3 −0
Conditions which always matches returns no result with CTE

I have the following scenario (in MySQL 8): CREATE TABLE `steps` ( `id` int NOT NULL AUTO_INCREMENT, `number` varchar(30) DEFAULT NULL, `parent_number` varchar(30) DEFAULT NULL, `timestamp` ti...

1 answer  ·  posted 9mo ago by artaxerxe‭  ·  edited 9mo ago by Alexei‭

42%
+1 −2
How to create an object, call one of it's methods and pass it as an argument as a oneliner?

Assume I have this class Foo class Foo { private int x; void setX(int x) { this.x = x; } } And I have a Junit test like this: Bar bar; @BeforeEach void setu...

3 answers  ·  posted 9mo ago by klutt‭  ·  last activity 9mo ago by Alexei‭

62%
+3 −1
DST disrupting rsync twice a year

I'm facing rsync full syncs every once upon a time, I think it's because DST, notice an hour of difference: $ ls -l tier2/VIDEO-2020-06-17-15-10-27.mp4 /Volumes/KINSTON2/dat/laptop_kinstones/tier2...

1 answer  ·  posted 2y ago by .                                                .‭  ·  last activity 9mo ago by .                                                .‭

72%
+6 −1
How to unittest method that involves contacting remote servers?

Let's say I have this class: class myService { private boolean foo(T arg) { return arg == 42; } public Response bar(U arg) { if(foo(U.field)) { return Response.st...

1 answer  ·  posted 9mo ago by klutt‭  ·  last activity 9mo ago by meriton‭

66%
+2 −0
How to check if a ldap username is valid without contacting the active directory via ldap?

I have some code connecting to an active directory via ldap. Something like this: public Response add(User user) { try { LDAPConnectionPool ldapPool = ldapConnectionPool.getPool();...

0 answers  ·  posted 9mo ago by klutt‭  ·  edited 9mo ago by klutt‭

77%
+5 −0
How to properly use malloc?

I have seen this construct quite a lot: int *p = (int*) malloc(n * sizeof(int)); Is this how it should be? What is the proper way to use malloc? I have also seen this: int *p = malloc(n * size...

2 answers  ·  posted 10mo ago by klutt‭  ·  last activity 9mo ago by klutt‭

40%
+2 −4
How do I properly format a String for parsing with a com.google.gson.JsonParser

I am trying to check a JSON array for a certain element. However, when I try to instantiate a JsonElement to search the list for: JsonElement builderElement = JsonParser.parseString( "{\"disc...

0 answers  ·  posted 11mo ago by cuzzo‭  ·  edited 10mo ago by Stephen C‭

66%
+2 −0
Difference between puts and print for Array

I have an array friends = Array.new friends[0] = "Mad man" friends[1] = "hey" There's two ways to print it (using print or puts). At first I tried print print friends which gave: ["Mad...

1 answer  ·  posted 1y ago by deleted user  ·  edited 10mo ago by Trilarion‭

71%
+3 −0
How to allow sign-ups without confirmation as an exception using devise confirmable?

I use the devise authentication gem for a Rails application and it's very convenient. Typically I want my users to confirm their registration by email. Therefore the User model looks like class U...

1 answer  ·  posted 10mo ago by Trilarion‭  ·  last activity 10mo ago by ArtOfCode‭

77%
+5 −0
Continuously read from piped input using Vim

In Vim, it's possible to tell it to read from stdin instead of a file, by using vim -. This is so that you can pipe the output of one command into Vim, to view/edit it there. The problem I'm facin...

2 answers  ·  posted 11mo ago by Hyperlynx‭  ·  last activity 10mo ago by InfiniteDissent‭

77%
+5 −0
noreturn function with non-void return type

Is it legal ISO C to declare a function as noreturn with a non-void return type (but of course not actually returning)? As far as I can read from the standard, it seems legal. Example: noreturn ...

1 answer  ·  posted 10mo ago by alx‭  ·  edited 10mo ago by alx‭

80%
+6 −0
Is it OK to use scanf with a void pointer?

I've created a function that calls scanf passing a void pointer as argument: void read(const char *format, void *p) { scanf(format, p); } And tested it with different types: int n; read...

2 answers  ·  posted 10mo ago by hkotsubo‭  ·  last activity 10mo ago by Lundin‭

80%
+6 −0
When does it not work to dereference the pointer for sizeof during malloc?

Background This is kind of a subquestion to How to properly use malloc? When allocating, there are basically two common ways of using the sizeof operator: int *p; p = malloc(n * sizeof *p); /...

1 answer  ·  posted 10mo ago by klutt‭  ·  edited 10mo ago by hkotsubo‭

77%
+5 −0
Is an ORDER BY required when looping through MySQL records with LIMIT?

Let's say I have a table with 10,000 rows and instead of selecting all of the rows at once I select 1,000 at a time like LIMIT 0,1000 LIMIT 1000,1000 etc. Without an ORDER BY statement the or...

1 answer  ·  posted 2y ago by Charlie Brumbaugh‭  ·  edited 10mo ago by Alexei‭