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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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+2 −0
How can I get a value as a node:stream from the Nest.js cache-manager?

Question How can I read data from a NestJS Redis Cache as a stream? I'm using Nest.js and its @nestjs/cache-manager (using the Redis implementation), I need to read data I have stored in the cach...

0 answers  ·  posted 1y ago by gdfelt‭  ·  edited 1y ago by MrDevel0per‭

71%
+3 −0
How to declaratively enable RabbitMQ feature flags in Kubernetes

We use Kubernetes on a cloud (GKE, to be precise). We use RabbitMQ for messaging and we need to upgrade it from 3.10 to 3.12 . FWIW RabbitMQ has been added to our system using a chart from Bitnami...

0 answers  ·  posted 1y ago by FractionalRadix‭

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+1 −0
How do I register the Chart.js Zoom plugin?

I am attempting to use the chartjs-zoom-plugin v2.0.1 with Chart.js v4.4.0. I have the plugin as the file chartjs-plugin-zoom-2.0.1.min.js, and I have imported it into my page using <script ty...

1 answer  ·  posted 1y ago by CavanWright‭  ·  last activity 1y ago by surajrao‭

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+0 −2
Axios error bad request [closed]

I'm trying to use this code with Axios: import "./feed.css"; import Post from "../post/Post"; import Share from "../share/Share"; import { useState, useEffect } from "react"; import axios from...

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

71%
+3 −0
Using an existing web server vs writing your own

When writing a dynamic web service, you broadly speaking have two paths: Use an existing web server (e.g. Apache, Nginx or Lighttpd) to handle the "raw" web requests and implement your own cod...

4 answers  ·  posted 1y ago by Iizuki‭  ·  last activity 1y ago by Basile Starynkevitch‭

50%
+1 −1
Angular Testing fails with Service.method is not a function

I'm trying to write a spec test for a (correctly working) Angular component, but it errors when calling a service method with: TypeError: _this.myService.getSomeData is not a function The service...

0 answers  ·  posted 1y ago by mcalex‭

66%
+2 −0
Escape both reserved characters and curly braces in a URI in Spring Boot

I need to pass URI's that contain special characters, using Spring Boot. The characters include spaces, curly braces ({ and }), square brackets ([ and ]), and hash signs (#). The problem is that ...

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

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+4 −9
Find the name of the student with the top mark, display their name and mark

I have a CSV file like this: name,surname,score Moon,Walko,148 Jerald,Gryder,150 I need to find the highest score. My attempt: namespace test { class Program { string[...

2 answers  ·  posted 3y ago by InPut‭  ·  last activity 1y ago by NetMage‭

71%
+3 −0
How to use docker hub with podman?

Unlike docker, Podman won't (understandably) use docker hub by default. You can use it explicitly like this: (just using a random example here, it's an OpenAPI linter) podman pull docker.io/dshanl...

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

66%
+2 −0
Get list of all variables from Jinja template

Suppose you have a jinja template like this: I am going to {{ foo }} to get some {{ bar }}. I hope I can find: {% for i in baz %} - {{i}} {% endfor %} This template will require you to pass ...

0 answers  ·  posted 1y ago by matthewsnyder‭  ·  edited 1y ago by Karl Knechtel‭

50%
+1 −1
Running a bash command with a Key Combination in Gnome [closed]

Is there a way in Ubuntu to run a given bash command for a given Key combination in Gnome (42.9)? I run an Ubuntu in Hyper-V and after a while the normal Keyboard layout change doesn't work (maybe...

0 answers  ·  posted 1y ago by Arpad Horvath‭  ·  closed 1y ago by Alexei‭

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+7 −0
Git add/stage only part of a file's changes

Say I've made a bunch of changes to a file and would like to split those changes into two or more commits. Normal git add however stages the whole file in one go. So how to add only some of the ch...

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

git
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+1 −1
What software architecture are available for developing an application with multiple business domains that only share some common aspects?

NOTE The meaning of the word "program" below is (PROGRAM) A federal or state initiative that offers grants for non-profits so that they can provide service at low cost or free of charge. a...

2 answers  ·  posted 1y ago by toraritte‭  ·  edited 1y ago by toraritte‭

71%
+3 −0
How to provide meaningful names for emails in Maildir?

I am writing some scripts that operate on emails in Maildir format. A lot of things are easy in this format, but the filenames are absolutely incomprehensible. For example, one script moves mails ...

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

25%
+0 −4
Configure port in Gbee.ai [closed]

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

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

40%
+0 −1
Determine which script is slowing the page down in Firefox [closed]

A page is very slow and laggy in Firefox. I am certain it's one of the many Javascripts slowing it down. Out of curiosity, I'd like to figure out which script is creating the heaviest load. Note t...

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

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+0 −0
How do I get the min/max axis values in Chart.js?

I'd like to get the minimum and maximum values of the axes on a Chart.js 4.4.0 plot. When the plot is created, these values must be calculated somewhere. However, reading through the Chart.js doc...

1 answer  ·  posted 1y ago by CavanWright‭  ·  last activity 1y ago by Ullallulloo‭

75%
+4 −0
Set transform of SVG element

I'm trying to set the transform attribute of a group within an SVG. Specifically, I'd like to set translate's value to 0 0. I tried using the set element for this but that didn't have an observab...

1 answer  ·  posted 1y ago by Matthias Braun‭  ·  edited 1y ago by Matthias Braun‭

svg
66%
+4 −1
How to implement a relationship between 2 tables where the type of participation is mandatory and RESTRICT rule for both?

Found the example below in a book teaching logical database design, but I'm stuck on how one would implement this in PostreSQL: The diagram reflects the following business rule: An instructor...

1 answer  ·  posted 1y ago by toraritte‭  ·  last activity 1y ago by Derek Elkins‭

66%
+2 −0
Redshift int casting from varchar - how to force early evaluation order?

Context: I have a varchar column in a segment event table that contains version numbers. Most of these are formatted nicely as X.Y.Z (major.minor.patch) where X, Y, and Z are integers. However, the...

0 answers  ·  posted 1y ago by Sigma‭

60%
+1 −0
How to validate Ansible role dictionary argument's "additionalProperties"

In JSON Schema one can use the additionalProperties key to validate properties whose names are not know. You can still impose restrictions on their type. How to do this in an Ansible role argument...

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

60%
+1 −0
How to use Ansible extract filter in map with an external dictionary

Ansible's extract filter is supposedly made for use in map, but at the time of writing the documentation doesn't actually show how to use it together with the map filter. The following outputs VAR...

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

66%
+4 −1
How to overwrite lines of STDOUT in Python?

print() normally adds text to STDOUT, it does not erase existing text. https://linux.codidact.com/posts/289869 describes various ways of doing the overwrite in shell scripts. How can you do this ...

2 answers  ·  posted 1y ago by matthewsnyder‭  ·  last activity 1y ago by hkotsubo‭

71%
+3 −0
Advanced Regex extension for VS Code

VS Code supports regex search, but the search/replace is UI is just a tiny dialog box. It's okay if you know regex well and the expression is not complex, but when trying to apply complicated expre...

0 answers  ·  posted 1y ago by matthewsnyder‭

71%
+3 −0
How to open VS code with a particular path expanded?

When you do: cd /some/path code . VS Code opens with that location shown in the "Explorer" sidebar. However, the state of the file tree and the currently open files will be the same as what wa...

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

66%
+2 −0
Remove entries by two-column ID everywhere, that meet a condition somewhere

MWE import random import pandas as pd from itertools import product random.seed(12345) dies = [1, 2] cells = list(range(10)) currents = [100, 200, 300] dcc = list(product(dies, ce...

3 answers  ·  posted 1y ago by mcp‭  ·  edited 1y ago by mcp‭

60%
+1 −0
How do I install Chart.js as a file?

I'm trying to replace Flot.js with Chart.js. In my application, Flot.js is included as a normal JavaScript file, like so: <script language="javascript" type="text/javascript" src="jquery.flot-...

1 answer  ·  posted 1y ago by CavanWright‭  ·  last activity 1y ago by Ullallulloo‭

50%
+3 −3
Regex for simplifying Amazon product URLs

Amazon product URLs are often very long, but on experimentation it is revealed that the following pattern is sufficient: https://www.amazon.com/{dp|gp}/$ID ID is a 10-char string, which I'm gue...

1 answer  ·  posted 1y ago by matthewsnyder‭  ·  last activity 1y ago by mr Tsjolder‭

60%
+1 −0
Shortcut for inserting today's date in VS Code

Is there a way to easily insert today's date when editing a file in VS Code?

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

71%
+3 −0
How to convert Dos paths to Posix paths in Powershell

What is the best way to convert Dos paths to Posix paths in Powershell? eg given: C:\Program Files\PowerShell\Modules\ I want something like: /Program\ Files/PowerShell/Modules/ Is the only so...

1 answer  ·  posted 1y ago by kjw‭  ·  last activity 1y ago by H_H‭

75%
+4 −0
JavaScript redirect is getting "hijacked" and it is not onbeforeunload event.

My redirect in javascript somehow gets "hijacked" and I don't understand how. Previous developer (who is no longer working with the company) on page load initialized onbeforeunload event like so: ...

1 answer  ·  posted 1y ago by Vanity Slug ❤️‭  ·  last activity 1y ago by Vanity Slug ❤️‭

66%
+2 −0
How does scoping work in R?

If I run ls() in R, it shows the variables (including functions) in my workspace. But there are other variables visible too, e.g. functions from packages like ls itself. And if I write a function...

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

50%
+1 −1
How do I properly render a quad in OpenGL using a GL_TRIANGLE_STRIP primitive?

I am currently working with LWJGL and the obstacle I face right now on my project is rendering textures to a cube, e.x a set of 8 vertices with position, color, and UV information. For now, I am st...

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

66%
+2 −0
VS Code: How to open a file and folder in a new window?

I've figured out that code --new-window /foo/bar/baz.txt will open baz.txt in a new window. But when I do this, it says "no folder opened" in the file explorer pane. That makes it hard to work with...

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

71%
+3 −0
Clear selectManyMenu component if user unselects item in JSF 2

I am working with JSF 2.3 and have a selectManyMenu component that is marked as required but that I want to be cleared if the user unselects all items. Currently, the user can unselect all items, b...

1 answer  ·  posted 1y ago by tarhalda‭  ·  edited 1y ago by BalusC‭

50%
+0 −0
Adding two products into cart with help of a checkbox.

I've created a code snippet in "functions.php" that should add another product to your cart if you mark the checkbox, but somehow, only the original product is add (like the single product from the...

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

60%
+1 −0
How to delete a local branch in git?

How to delete a local git branch which hasn't been pushed to anywhere, and only exists locally?

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

80%
+6 −0
What is the meaning of "short circuit" operators?

When reading about various operators used by programming languages, the term "short circuit behavior" is often used. For example in this C code: int a = 0; a && b++ Someone explained t...

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

87%
+12 −0
Are there best practices for sticking conditions in WHERE clauses vs the JOIN statement?

Lets say I have two tables, A and B and I need to join a subset of them. Is there best practices of sticking the conditions in the WHERE clause like this, SELECT * FROM A JOIN B on a.fk_b = b....

3 answers  ·  posted 4y ago by Charlie Brumbaugh‭  ·  last activity 1y ago by billkarwin‭

71%
+3 −0
How should open source forks, with a mix of upstreamable and non-upstreamable commits, be maintained?

I have a few different projects that rely on open source technology that I wish to make modifications to (say, to add key features for business or personal use) that will vary between upstreamable ...

1 answer  ·  posted 1y ago by eoin.oneill‭  ·  last activity 1y ago by matthewsnyder‭

66%
+4 −1
How do I remove an element from a Java array?

One way to remove element from array is to replace element with zero. Below is a rough snippet I am sharing: int N = sc.nextInt(); int pos = sc.nextInt(); int A[] = new int[N]; if(pos == i) { ...

1 answer  ·  posted 1y ago by abhinavxyz‭  ·  edited 1y ago by E_net4‭

71%
+3 −0
How do I pass field names containing dashes in dbt source yml file?

Working with dbt version 2 I'm trying to set up source checks but I'm running into an issue where the column names I'm setting tests for have dashes (e.g. my_table.some-field-with-dash). I current...

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

86%
+11 −0
Alternatives to `EXPLAIN ANALYZE` for queries that won't complete

I have a large and complex PostgreSQL SELECT query that I would like to make faster. EXPLAIN suggests it should run quickly, with the worst parts being scans of a few thousand rows. When run, it do...

2 answers  ·  posted 1y ago by Emily‭  ·  last activity 1y ago by matthewsnyder‭

33%
+0 −2
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 1y ago by dnmnbg‭  ·  closed 1y ago by Alexei‭

50%
+1 −1
Is there a text version of pickle?

Is there a Python serialization format that has capabilities similar to Pickle, but is text based? The problem I always have with pickle is that it's binary, so I can't manually view or edit the d...

0 answers  ·  posted 1y ago by matthewsnyder‭

85%
+10 −0
What is the point of pipx?

Background Many Python programs now recommend installing with pipx, and there is a sense that you shouldn't install with pip anymore, you should use tools like pipx. Main Question However, what ...

3 answers  ·  posted 1y ago by matthewsnyder‭  ·  last activity 1y ago by tripleee‭

60%
+1 −0
Optimized representation for sets?

I need to do a lot of calculations involving sets. There are relatively few values in the "universe" of candidates that could appear in any of the sets, but potentially very many such sets (they mi...

1 answer  ·  posted 1y ago by Karl Knechtel‭  ·  last activity 1y ago by Karl Knechtel‭

81%
+7 −0
How do I customize merge behavior for a shared git repo?

I often find it useful to arrange things so that each commit on master's first-parent is a discrete change. It allows git log --first-parent --oneline to be used as a concise, automatically-generat...

1 answer  ·  posted 4y ago by ajv‭  ·  last activity 1y ago by GrantMoyer‭

75%
+4 −0
How to align my content to the left?

This revolves around images. I'm trying to write an HTML page of COVID-19 safety procedures, and here's what I've written so far: <!DOCTYPE html> <html> <head> <title&...

2 answers  ·  posted 3y ago by General Sebast1an‭  ·  last activity 1y ago by Peter Taylor‭

66%
+2 −0
Pipeline for zipping multiple file chanel into a single output channel

I am in need of downloading some files (from dynamic list of URLs) and archive them into a single zip file. Since these files can be arbitrarily sized (totaling hundreds of MB), I want to avoid dow...

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