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General Q&A about programming, scripting, software design & architecture, process, tools, testing, and more.
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I have created a tag in my project, using git tag v2023 However, I forgot to commit a few changes. Now I would like to move this tag to the current point (after having committed the changes I had...
I'm trying to revive an old project of mine. It was built with Phalcon PHP 2 or 3 (I don't even remember which version, but quite old). There I could include a call to the loop inside the controll...
This is meant as a FAQ Q&A regarding variable-length arrays (VLA). The two bugs described below are surprisingly common. I'm trying to use the variable-length arrays feature of C99 (and newe...
I am writing a Python package where I have two classes in different files that (indirectly) depend on each other. If I wouldn't care about type-hints, there would be no problem, but unfortunately,...
I want to write a text file from multiple threads. The file structure is line-oriented. This means writing of lines should be atomic. I am using Qt 5.15.2. Is it enough to protect a shared QTextSt...
My Android app needs to process lists that contain nullable elements. I am using JUnit 4.13.2 for unit testing. I am using Android Studio Flamingo | 2022.2.1 Patch 2 . I have a failing test,...
How do I clone the repository with only part of the history? For example, let's say I want to download only the last 5 commits out of thousands.
Is it possible for a Python program to send itself in the background? For example, on Linux you can do nohup some_cmd & and any program will run in the background. Some programs also support s...
I have git repo where the .git is deleted. I didn't realize it until after I made some changes to the code. I want to re-create the .git by cloning. However I don't want it to touch the files that...
TL;DR: How to pass a interpolated double vector, such as a dvec2, from the vertex shader to the fragment shader? I have a vertex shader. In this the output variable out vec2 uv; is set. And i have...
According to the standard (C17 draft, 7.22.3.2) The function calloc void *calloc(size_t nmemb, size_t size); "allocates space for an array of nmemb objects, each of whose size is size [and] i...
Consider this code: while(arr[index] != 0) index++; vs while(arr[index] != 0) { index++; } Personally, I prefer the first. The fact that the braces are not needed makes them -- u...
I have an application that works with a JTable, and in this JTable, I want each cell to have both an ImageIcon and some text. I see at this link, JTable supports ImageIcon OR text, but seemingly n...
On a live boot of Ubuntu 20.04, I was trying to clone into a private GitHub repository. I went through the hassle of installing git, and then gh, and making sure I was signed in through the termina...
I have a very simple source file -- HelloWorld.java public class HelloWorld { public static void main(String[] args) { System.out.println("hello world"); } } I have th...
The C language has gone through many iterations and the latest one not yet released is informally called "C23", supposedly because they hoped to release it in 2023. The latest draft version N3096 i...
I have the following xarray Dataset: d: <xarray.Dataset> Dimensions: (x: 79, y: 63, t: 1) Coordinates: * x (x) float64 0.9412 1.882 2.824 3.765 ... 71.53 72.47 73.41 74.35 * ...
I'm currently writing an input and output handling library for the D language, and I'm not getting any kind of input language change messages when the language is being toggled with hotkeys, and on...
In Python, multiprocessing is easy to do if you follow a "list projection" paradigm. Say you want to take a list of inputs X and apply some function f to every x_i, such that y_i = f(x_i) and the y...
Mathematically, the purpose of a function is to return an output. However, in a programming context functions often have side effects. It is even common to call functions for the side effects alone...
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...
Why does git merge take the source branch rather than the destination branch as a parameter? The most common merge case by far for me is "Okay, this branch looks good, let's merge it into branch X...
Suppose I have some variables like: >>> count = 8 >>> status = 'off' I want to combine them with some hard-coded text, to get a single string like 'I have 8 cans of Spam®; b...
When I have tried to read technical explanations of the syntax rules for programming languages, and when I am trying to decipher error messages, I often encounter the terms expression and statement...
I know that I can display a single string in the terminal window like print("example") (or similarly with a string in a variable), and I know how to open text files and write to them. I also know ...
What is the purpose of grouping the tests in a tests module like this #[cfg(test)] mod tests { use super::*; #[test] fn test_function_1() { // test code for function 1 g...
I'm looking at the behaviour of Chrome and my test framework and trying to understand what the correct behaviour should be before raising an issue/ticket on one or the other (or revisiting how my t...
Suppose I have two variables that are called animal and age, and print them as a string in the console like so: animal = "giraffe" age = 25 print("A %s can live up to %d years" %(animal,age)) ...
How to use static functions in ColdFusion? How to import component? How to call a static function using both tag and script syntaxes? Adobe added support for static functions in ColdFusion...
Problem How can I compress each column of a dataframe to the output of a function (i.e., mean), preserving columns? MWE import pandas as pd data = {"A": [1, 2, 3, 4], "B": [5, 6, 7, 8]} ...
I am looking for a way to programmatically edit and save .dbc files that are meant for J1939 CAN communication. I have a few large files that need to be compared/edited. Being able to import, edit...
Temporary notice: this is part of an ongoing project of transferring and splitting my canonical from Stack Overflow on common errors in Google Apps Script. As soon as the Q&As are finalized, ...
I have the following code: use serde::{Deserialize, Serialize}; #[derive(Sereialize, Deserialize)] struct Container<const SIZE: usize> { contents: [String; SIZE] } But I'm getti...
I installed Node.js using NVS to manage my node installations. This works great, except that I haven't been able to figure out how to debug using VS Code. When trying to launch, I receive this err...
I have a git repository with some submodules. When the submodule repos get new commits on the remote, how can I pull them all?
Temporary notice: this is part of an ongoing project of transferring and splitting my canonical from Stack Overflow on common errors in Google Apps Script. As soon as the Q&As are finalized, ...
I have a function that loads JSON data and is declared to return a dictionary with string keys and values of any type (Dict[str, Any]). However, mypy is raising an error stating that I am returning...
I like using NATURAL JOIN in Snowflake, because I find it more elegant than explicit join clauses. However, it appears that the natural join behaves similar to an inner join, in that null values o...
Is there a way to add support for "move symbol" in Python code for VS Codium? PyCharm can do this, but I am looking for a VSC solution. PyLance can do this, but PyLance itself is closed source, a...
In the last few months, AI has advanced considerably, notably in the area of generating images. We now have powerful models like DALL-E, Stable Diffusion, etc. These are quite competent at generati...
I am working on adding uncertainty to some of my dynamics within a larger Monte Carlo simulation. As a way to perform multiple operations on each value, I decided to make and use a new function to ...
I am migrating an application from Log4j1 to Log4j2 using the API bridge jar. All references to the log4j1.jar have already been removed. I set the system property in Websphere as a JVM argument -...
I am all new with using Redux Toolkit, I followed the official documentation to setup the store: // store.ts import { configureStore, ThunkAction, Action, combineReducers } from '@reduxjs/toolkit...
I wanna make a form in React native. A field in this form in (non-native) React would be like this: <div> <label htmlFor="lastName">Last Name:</label> <input type="text...
Can anyone explain to me why my Haskell function gives rise to a type-definition error? Originally, I wrote the following function to subtract one from the first n elements in a list: dec_first :...
I'm experiencing an issue where my program appears to freeze when executing the post_comments_to_lemmy function. This function fetches comments from the GitHub API and posts them to a Lemmy instanc...
How do I add functionality to the back button in Android without reimplementing the back button entirely? Prior to last year, I would just call onBackPressed() and then simply override it: overri...
Context Using the lemmy API, I'm trying to get a list of sublemmies (lemmy communities) that a user is following. Reading the documentation, I using the /site endpoint, I should be able to get a ...
Functions in C have external linkage by default. In other words, the storage class specifier extern is applied to functions by default, with the effect that they are visible to all translation unit...
Flutter supports packaging a SQLite instance with a Flutter app using the Sqflite plugin. I do not like the speed of SQLite or the fact that it does not enforce column datatypes and want to use som...
