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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)
60%
+1 −0
Installing packages for, and using them with, a specific Python installation

I have multiple installations of Python on my machine. I already know how to choose one to use to run for my code - and therefore, I could also solve the problem for third-party application code. ...

1 answer  ·  posted 8d ago by Karl Knechtel‭  ·  last activity 10h ago by Karl Knechtel‭

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+1 −0
TypeScript won't recognize cross-module type extensions

I'm trying to write a Node module that extends the functionality of another module (a peer dependency which I do not control) using a register function exposed by the other module. This adds additi...

0 answers  ·  posted 1mo ago by Andrew Ray‭

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+1 −0
Why does `distutils` seem to be missing or broken? Isn't it part of the standard library?

Sometimes when I try to install a third-party library for Python, I get an error saying that either distutils, or some part of it like distutils.core or distutils.util, could not be found. It's sho...

1 answer  ·  posted 2mo ago by Karl Knechtel‭  ·  last activity 2mo ago by Karl Knechtel‭

80%
+6 −0
Where to place digit separators in C23?

C23 introduces the digit separator ' which can be placed anywhere inside an integer constant for the purpose of clarity and self-documenting code. These are otherwise ignored by the compiler when d...

2 answers  ·  posted 4d ago by Lundin‭  ·  last activity 3d ago by John C‭

50%
+0 −0
How to test if chrome dev tools are open in JavaScript?

Some web sites are able to detect that Developer Tools is open as output a message in a the console. How does JavaScript know that the Chrome DevTools are open? Could this be spoofed?

0 answers  ·  posted 2mo ago by kreijstal‭  ·  edited 2mo ago by Alexei‭

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+0 −0
Why does `let map f = id >=> switch f` work in F#?

Asked How to implement map using the fish (>=>, Kleisli composition) operator in F#? a couple of hours ago, and r~~'s answer blew my mind: let map f = id >=> switch f It is perfect ...

1 answer  ·  posted 2mo ago by toraritte‭  ·  edited 2mo ago by Alexei‭

75%
+4 −0
How to sort the output of meta / slash commands in `psql`?

For example, how to sort the output below by the values in "Column" in the psql shell itself? my_db=> \d auth_user Table "public.auth_user" Column ...

1 answer  ·  posted 1mo ago by toraritte‭  ·  edited 28d ago by MER‭

75%
+4 −0
Simplest way of getting failure notification emails from kubernetes

What would be the simplest (and most lightweight) way of getting email notifications of failures in kubernetes clusters. Mostly interested in failing pods, so notifying on certain kubernetes event ...

1 answer  ·  posted 3mo ago by Iizuki‭  ·  last activity 2mo ago by Iizuki‭

41%
+3 −5
Building a language model completely from scratch

What I would like to do I would like to try to build a language model 100% from scratch if possible, for a learning experience. That means no external libraries and no pre-curated datasets. It ...

1 answer  ·  posted 4mo ago by Julius H.‭  ·  last activity 4mo ago by matthewsnyder‭

66%
+2 −0
Understanding the Matrix protocol vs Matrix server and what can be implemented from scratch

Since Matrix messenger offers only a protocol,[1] as a software engineer I can choose to: Write my own client or use an existing client Write my own server with my own server logic or join an e...

1 answer  ·  posted 2mo ago by erjcan‭  ·  last activity 2mo ago by Michael‭

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+2 −0
Adding dependency with cabal in gitlab-ci

I have a project I normally build with nix and cabal, however I also want to publish my documentation onto gitlab pages. It's impractical to run my nix on the gitlab CI, so I've just been using cab...

0 answers  ·  posted 2mo ago by WheatWizard‭

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+2 −0
How can I manage multiple consecutive strings in a buffer (and add more later)?

This question is inspired by If I have a char array containing strings with a null byte (\0) terminating each string, how would I add another string onto the end? on Stack Overflow. Suppose I have...

2 answers  ·  posted 3mo ago by Karl Knechtel‭  ·  last activity 2mo ago by Lundin‭

71%
+3 −0
Privilege escalation from Python like from systemd

When you try to do a privileged systemd operation without the privilege, you get an escalation prompt: $ systemctl stop docker ==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ==== ...

1 answer  ·  posted 2mo ago by matthewsnyder‭  ·  last activity 2mo ago by Karl Knechtel‭

66%
+2 −0
How to write a function that only accepts a list of `Error string` `Results` in F# on the level of types?

For example, given a mergeErrors function where input is always a list of Error strings, let es = [ Error 1; Error 2; Error 3 ] let mergeErrors<'a> (errors: Result<'a,int> list) : R...

1 answer  ·  posted 5mo ago by toraritte‭  ·  last activity 5mo ago by Derek Elkins‭

f#
60%
+1 −0
ServletContext matched by more than 1 path

The javadoc for ServletContext.getContextPath() says that It is possible that a servlet container may match a context by more than one context path. I was trying to find any explanation how t...

0 answers  ·  posted 2mo ago by morgwai‭

71%
+3 −0
How to iterate over numpy array axes in array slicing?

In short, I want to access a multidimensional array, starting with an entry, say a 4D array called "new_array". new_array[0,1,2,3] and getting as an output the sliced arrays new_array[:,1,2,3],n...

1 answer  ·  posted 25d ago by purplenanite‭  ·  last activity 25d ago by r~~‭

77%
+5 −0
How to delete a remote branch in git?

How to delete a branch from a remote in git? E.g. maybe you had this branch locally too, but you deleted it already according to this question. Now you want to get rid of the corresponding remote ...

2 answers  ·  posted 4mo ago by Iizuki‭  ·  last activity 4mo ago by hkotsubo‭

git
75%
+4 −0
Why does `Zip` require `Semialign`

The Zip class from Data.Zip requires an implementation of Semialign: class Semialign f => Zip f In my mind: Zip takes the intersection of two shapes. Semialign takes the union of two sha...

1 answer  ·  posted 4mo ago by WheatWizard‭  ·  last activity 4mo ago by r~~‭

66%
+2 −0
Best practices for business versioning within Web APIs

Context Our team is developing a solution mainly composed of several microservices relying on ASP.NET Core. We have decided that the simplest and most cost-effective solution would be for service...

0 answers  ·  posted 2mo ago by Alexei‭  ·  edited 2mo ago by Alexei‭

60%
+1 −0
Why is the `Data.Int` type not a `Semigroup` in PureScript but `String` is?

> "lo" <> "fa" "lofa" > 1 <> 2 Error found: in module $PSCI at :1:1 - 1:7 (line 1, column 1 - line 1, column 7) No type class instance was found for ...

1 answer  ·  posted 18d ago by toraritte‭  ·  last activity 18d ago by r~~‭

60%
+1 −0
What is the difference between `static let` and `static member` in F#?

Taking the example from this Stackoverflow question: type Vector2D(dx : float, dy : float) = static let zero = Vector2D(0.0, 0.0) static let onex = Vector2D(1.0, 0.0) static let ...

1 answer  ·  posted 5mo ago by toraritte‭  ·  last activity 5mo ago by toraritte‭

f#
50%
+0 −0
Check if a file exists in Node.js

How to check in Node.js if a file exists?

2 answers  ·  posted 27d ago by philipp.classen‭  ·  last activity 27d ago by ɯıpɐʌ‭

40%
+0 −1
Migrating from Az Co DB MongoDB to Az Co DB MongoDB, error? [closed]

With Azure Data Factory I tried migrating from Azure Cosmos DB MongoDB to Azure Cosmos DB MongoDB. I got some errors with wasted/non-imported documents with MongoDB Compass. How to solve it?

1 answer  ·  posted 19d ago by propatience‭  ·  closed 18d ago by Alexei‭

66%
+2 −0
How to surround jinja expression with curly brackets?

A jinja template expression starts and ends with double curly brackets, which the templating engine consumes. But what if you need a single pair of curly brackets left in the output? Something lik...

1 answer  ·  posted 4mo ago by Iizuki‭  ·  last activity 3mo ago by Alexei‭

66%
+2 −0
PHP - Why using "global" considered bad?

In PHP why is using global like in the example below considered bad? $a = 1; class foo { public function bar() { global $a; // <-- Why is this considered bad? } } ...

1 answer  ·  posted 3mo ago by Vanity Slug ❤️‭  ·  last activity 3mo ago by matthewsnyder‭

80%
+6 −0
Can I access an array element from a pointer to an object contiguous with but outside the array?

C prohibits accessing an array out of bounds even if measures were taken to ensure that what should lie outside those bounds were known: struct MyStruct { int x[2]; int y, z; }; static...

1 answer  ·  posted 2mo ago by CPlus‭  ·  last activity 2mo ago by Lundin‭

71%
+3 −0
Android Studio IDE refuses to find my device

I've installed Android Studio Jellyfish (snap) on an Ubuntu Fossa VM and was finally able to generate an apk for my project after struggling with Gradle, Java, plugins, etc. The device is detected...

1 answer  ·  posted 7d ago by JohnRando‭  ·  last activity 5d ago by FractionalRadix‭

33%
+0 −2
How do I concatenate two animated gifs together? [closed]

How do I concatenate two animated gifs together? The gifs are identical in dimensions and I would like to stitch them together so they play one after the other.

1 answer  ·  posted 1mo ago by congusbongus‭  ·  closed 1mo ago by Alexei‭

gif
50%
+0 −0
Understanding Virtual Environments for Python

Several times now, I've seen advice in tutorials, setup/install instructions for Python-based projects, etc. to use a virtual environment to keep things organized and make it simpler to manage the ...

1 answer  ·  posted 11h ago by Karl Knechtel‭  ·  last activity 10h ago by Karl Knechtel‭

22%
+0 −5
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 5mo ago by abhishek27suvarna‭  ·  edited 2mo ago by CPlus‭

66%
+4 −1
Subfolders for package-less module imports

Is there some sane way to allow Python to import from subfolders in projects that don't have a package? I have many Python programs that I implemented as Python files inside a directory, without a...

1 answer  ·  posted 14d ago by matthewsnyder‭  ·  last activity 12d ago by matthewsnyder‭

75%
+4 −0
How do you add "Sign In with Google" to a Ruby on Rails web application that is using the Devise authentication framework?

I want to add the ability to "Sign in with Google" into a Ruby on Rails web application, that is using Devise to handle authentication. How do I do that?

1 answer  ·  posted 4mo ago by Julius H.‭  ·  last activity 4mo ago by Julius H.‭

71%
+3 −0
What guarantees does Bash make about order of :- Parameter Expansion when it is not in POSIX mode?

I tried to check info bash but only got a copy of the man page. This is when I learned that I could apt install bash-doc to get the "full" Bash manual. After checking both the info pages and the m...

1 answer  ·  posted 4mo ago by aghast‭  ·  last activity 3mo ago by Quasímodo‭

60%
+1 −0
What's the difference between colorMode and uiMode?

In setting android:configChanges in AndroidManifest.xml, what is the difference between colorMode and uiMode? I hear uiMode is for changes between light/dark modes, which sounds exactly what colorM...

0 answers  ·  posted 9d ago by Ullallulloo‭

75%
+4 −0
When to use custom iterators versus pointers

I am working on a toy project where I have a container for which I would like to write an iterator that iterates over the values in the container. Because the values are stored in a (c-style) arra...

1 answer  ·  posted 2mo ago by mr Tsjolder‭  ·  last activity 2mo ago by Angew‭

50%
+0 −0
What is a "sealed" type in F# and why doesn't the type test pattern operator (:?) work on it out of the `box`?

The F# language guide (see Signatures article) has a very sparse definition of what a "sealed" type is: Attribute Description [<Sealed>] For a type that has no abstract me...

0 answers  ·  posted 5mo ago by toraritte‭  ·  edited 5mo ago by toraritte‭

f#
77%
+5 −0
Are there technical reasons to pick one struct coding style over the other?

C offers two different styles when it comes to structs (and union/enum too). Either declare them using a struct tag only ("struct tag style"): struct my_type { ... }; struct my_type x; Or ...

1 answer  ·  posted 4mo ago by Lundin‭  ·  last activity 4mo ago by Lundin‭

60%
+1 −0
How can I start my Python code, from the code itself?

I have already learned how to tell the Python interpreter to run my code, but the standard approach feels a little unsatisfactory. I want the user experience to be that my program starts with the a...

1 answer  ·  posted 13h ago by Karl Knechtel‭  ·  last activity 13h ago by Karl Knechtel‭

50%
+2 −2
How to write a bash function to sanitize filenames for Linux and Windows

I'm trying to write a bash function that can sanitize filenames to make them compatible with both Linux and Windows file systems. The function should perform the following operations: Replace in...

0 answers  ·  posted 2mo ago by ShadowsRanger‭

60%
+1 −0
What's the difference between include_directories and target_include_directories?

I have seen others allude to include_directories as disfavored: Having trouble adding include directories Summaries from CMake's documentation: target_include_directories include_directori...

0 answers  ·  posted 4d ago by nogjam‭

75%
+4 −0
Syntax match any 2 spaces at end of line

I'm using the following syntax match to conceal 2 spaces at the end of a line with a special character. syntax match Normal '\s\{2}$' conceal cchar=⏎ A line with two spaces at the end of it wou...

2 answers  ·  posted 23d ago by rcmosher‭  ·  last activity 21d ago by Michael‭

vim
71%
+3 −0
Where is the `.fsproj` project file documented?

More specifically: Is there a dedicated docs page listing "properties" that are idiosyncratic to F# .fsproj project files? Why am I asking? Started learning F# a couple of days ago, but just now ...

1 answer  ·  posted 7mo ago by toraritte‭  ·  edited 7mo ago by toraritte‭

75%
+4 −0
Why is global evil?

Many languages discourage global variables. Why is this?

3 answers  ·  posted 3mo ago by matthewsnyder‭  ·  last activity 3mo ago by mavavilj‭

36%
+2 −5
What makes people able but unwilling to contribute to FOSS projects? [closed]

Suppose someone has the requisite knowledge and skillset to contribute to a FOSS project, they have the free time to do so and they are aware of the project. Yet, they decide not to contribute. Thi...

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

42%
+1 −2
can't install apks

An Android 10 Alcatel 3T tablet (armeabi-v7a) i have laying around for testing suddenly stopped being able to install apks by clicking on them. I can install apps just fine via f-droid and adb inst...

1 answer  ·  posted 18d ago by JohnRando‭  ·  last activity 17d ago by JohnRando‭

75%
+4 −0
Can you run Python code on text in VS Code?

In VS Code, is it possible to run Python code on the text being edited? I realize that I can save my text, create a .py file, switch to a terminal (including VS Code's own terminal) and run the .p...

1 answer  ·  posted 8mo ago by matthewsnyder‭  ·  last activity 1mo ago by Alexei‭

66%
+2 −0
Docker push fails with message "denied: requested access to the resource is denied"

Recently I had to push a new Docker image to our GitLab registry. I have the Maintainer role on that project. I had created a new token and used it to log in to Docker. However, when trying ...

2 answers  ·  posted 1mo ago by FractionalRadix‭  ·  last activity 15d ago by Alexei‭

71%
+3 −0
Is it possible to obtain the unlock code from an unlocked Android device via the Android API or the developer command line tools?

I have an Android 10 device where the OS is unlocked but the bootloader is not. I can't obtain the unlock code through the normal channels because of bureaucratic incompetence. Given that the devi...

0 answers  ·  posted 5mo ago by Kevin Krumwiede‭  ·  edited 5mo ago by Alexei‭

50%
+0 −0
Kubectl exec: "Error from server (BadRequest): Upgrade request required"

I'm getting an error when trying to open a shell to a pod. This used to work. $ kubectl exec --tty --stdin --namespace my-ns my-pod -- sh Error from server (BadRequest): Upgrade request required ...

1 answer  ·  posted 2mo ago by Iizuki‭  ·  last activity 2mo ago by Iizuki‭

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 8mo ago by FractionalRadix‭  ·  last activity 8mo ago by FractionalRadix‭