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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.

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How to log first n lines of a stack trace in Java?

How to log first n lines of a stack trace in Java?

2 answers  ·  posted 3d ago by propatience‭  ·  last activity 2d ago by hkotsubo‭

71%
+3 −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 5d ago by Iizuki‭  ·  last activity 5d ago by hkotsubo‭

git
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+4 −0
How can one import two classes with the same name in Java8?

Some development tools provide an error message when a user tries to import two things (classes, packages) with the same name. Some programming languages offer a syntax to import one of those thing...

1 answer  ·  posted 1mo ago by tarhalda‭  ·  last activity 6d ago by tmpod‭

57%
+2 −1
Proper location of docstring on struct with attributes

When documenting a struct with attributes, where does the docstring go? Before or after the attribute(s)? Option 1: /// Does it go here? #[derive(Deserialize, Debug)] pub struct Metadata { ...

1 answer  ·  posted 9d ago by qohelet‭  ·  last activity 8d ago by qohelet‭

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+4 −0
How to pass command line arguments when using cargo run?

When developing a rust program you build and run using cargo run. However you cannot just append arguments to that as they will be caught (and likely rejected) by cargo itself. So how to pass argum...

1 answer  ·  posted 5mo ago by Iizuki‭  ·  edited 9d ago by Alexei‭

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+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 11d ago by Lundin‭  ·  last activity 10d ago by Lundin‭

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+4 −0
Why does this work? .collect() automatic conversion to function return type

I'm completing the rustlings exercises as part of self-teaching Rust. While working on the third iterators exercise, I solved the exercise but don't quite understand why my solution works. Specifi...

1 answer  ·  posted 11d ago by qohelet‭  ·  last activity 10d ago by Iizuki‭

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+2 −0
Git command formatting characters in msbuild are interpreted incorrectly

I wish to add a property with the date of the current Git commit to the assembly info. From my .csproj: <Exec Command="git -C &quot;$(ProjectDir).&quot; log -1 --pretty=format:%ad" ...

1 answer  ·  posted 16d ago by LyndonGingerich‭  ·  edited 15d ago by Michael‭

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+2 −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...

0 answers  ·  posted 18d ago by aghast‭  ·  edited 15d ago by meta guy‭

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+2 −1
What is the difference between hashing and encryption?

According to this article: Since encryption is two-way, the data can be decrypted so it is readable again. Hashing, on the other hand, is one-way, meaning the plaintext is scrambled into a uniqu...

3 answers  ·  posted 18d ago by Julius H.‭  ·  last activity 16d ago by matthewsnyder‭

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How to hide files from the VS Code sidebar without pattern matching?

I want to clear my view of my file explorer sidebar in VS Code, and just see a few files I want to focus on. Is there an easy way to do this, using the mouse, and not file hiding using pattern mat...

1 answer  ·  posted 18d ago by Julius H.‭  ·  edited 16d ago by matthewsnyder‭

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+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 21d ago by Julius H.‭  ·  last activity 16d ago by matthewsnyder‭

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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 17d ago by WheatWizard‭  ·  last activity 17d ago by r~~‭

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+3 −1
What happens when you “Sign in with Google”?

I believe when you sign in with Google, the web application running in your browser calls a command to request the Google Sign In page, and includes a “callback URL” as a parameter in that HTTP req...

0 answers  ·  posted 18d ago by Julius H.‭  ·  edited 18d ago by Julius H.‭

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+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 19d ago by Julius H.‭  ·  last activity 19d ago by Julius H.‭

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+1 −0
Can Swashbuckle.AspNetCore generate exclusiveMinimum validation?

Is there a way to make Swashbuckle.AspNetCore generate a Swagger exclusiveMinimum range validation for a model property? There doesn't seem to be any way to do this with the attributes recognized ...

1 answer  ·  posted 24d ago by Kevin Krumwiede‭  ·  last activity 23d ago by Kevin Krumwiede‭

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MongoDB Java Morphia case insensitive criteria query?

So I googled some on how to make a case insensitive criteria query but could not find the solution very easily. So I basically have code that looks like this: ... query.criteria("fieldName").con...

1 answer  ·  posted 25d ago by propatience‭  ·  edited 25d ago by propatience‭

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+2 −0
What is the purpose of having a wrapper class for JarFile in Spring-boot-loader?

My question relates to Spring-boot-loader v2.6.15. For the purposes of this question, I will refer to Spring's custom JarFile class as CustomJarFile to avoid confusion. Context I am reusing so...

1 answer  ·  posted 1mo ago by Miss Skooter‭  ·  last activity 26d ago by Miss Skooter‭

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+19 −0
Should a salt be stored in the same database as the hash?

To protect against dictionary and rainbow table attacks it is well known that passwords should be salted before hashing. The salt (unique to each password) gets stored with the hash, often in the s...

5 answers  ·  posted 3y ago by jla‭  ·  last activity 26d ago by bencurthoys‭

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+4 −0
Is there any rationale for the lack of local constants in PHP?

The last few years, PHP has basically exploded with lots of modern language constructs that makes the life easier. But local constants are still missing, and I find that very strange. I have found...

0 answers  ·  posted 27d ago by klutt‭

php
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+6 −0
Git apply vs git am

What are the differences between git apply and git am commands? Both seem to be used for applying patches to repositories. When should one be used over the other?

1 answer  ·  posted 2mo ago by Iizuki‭  ·  last activity 29d ago by Michael‭

git
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+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 29d ago by Iizuki‭  ·  edited 29d ago by Iizuki‭

75%
+7 −1
How can I provide additional information when raising an exception?

Suppose I have some code like: filename = "bad_dir" print(f"File not found: {filename}.") raise(FileNotFoundError) When the exception isn't caught, the stack trace is printed at the end of ...

2 answers  ·  posted 1y ago by mcp‭  ·  edited 30d ago by Karl Knechtel‭

84%
+9 −0
Open file in script's own folder

I have a Python script that needs to access some data (or configuration) file in its very own folder. For example, say script.py does something like this: with open('data.txt') as file: data ...

2 answers  ·  posted 2y ago by J-hen‭  ·  last activity 30d 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 1mo ago by toraritte‭  ·  last activity 1mo ago by Derek Elkins‭

f#
50%
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Why is inter-VLAN communication not working in my bus topology network set-up in Cisco Packet Tracer?

I have created a simple bus topology connecting 2 switches and a router, with each switch connected to their respective end devices through ordinary star topology. The switch model used was 3560-24...

0 answers  ·  posted 1mo ago by Phoenix‭  ·  edited 1mo ago by Alexei‭

25%
+0 −4
How to Select From Multiple images to display main product image. [closed]

Below are the links to code for my project. HTML CSS Js Script 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 1mo ago by abhishek27suvarna‭  ·  closed 1mo ago by ArtOfCode‭

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+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 1mo ago by Kevin Krumwiede‭  ·  edited 1mo ago by Alexei‭

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+10 −0
Are "strong passwords" at all meaningful?

Whenever registering to diverse sites on the net, you are often forced to enter a so called "strong password", which would ideally contain both upper case letters, lower case letters, digits, and s...

5 answers  ·  posted 2mo ago by Lundin‭  ·  last activity 1mo ago by Kattensen‭

66%
+2 −0
Do the elements of 'required' array need to be defined in 'properties' dictionary in JSON schema?

In a JSON schema, do the required properties need to be a subset of properties? E.g. is this a valid schema, even though cookies isn't mentioned in properties? { "type": "object", "properti...

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

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+1 −0
Command to format code from repo into single markdown file

I'm trying to flatten a repository of Python code into a Markdown file where each file is formatted like: relative/path/to/file1.py # contents of file1.py I'm using this command: find . -name...

2 answers  ·  posted 4mo ago by ShadowsRanger‭  ·  last activity 2mo ago by Michael‭

71%
+3 −0
What does F#'s `box` keyword do and where is it documented?

The Null Values article in the F# Language Reference show an example that uses it, but it does not explain what it does exactly. You can use the following code to check if an arbitrary value is ...

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

f#
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 2mo ago by toraritte‭  ·  edited 2mo ago by toraritte‭

f#
75%
+4 −0
How to troubleshoot ModuleNotFoundError?

I ran some Python code and it crashed with ModuleNotFoundError. What is the general approach for dealing with these situations?

2 answers  ·  posted 2mo ago by matthewsnyder‭  ·  last activity 2mo ago by Karl Knechtel‭

77%
+5 −0
Best practices for company internal Swagger Docs in production

The current project I am working on consists of a bunch of microservices (Web APIs) accessible only internally using Entra ID (formerly Azure ID). To simplify the development, all services expose ...

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

50%
+0 −0
How to change the color of a cell to a user defined value while keeping its existing style using NPOI from F#?

The answer provided in the How to set the cell color to a user defined value using NPOI from F#? thread solves the problem of how to set the right properties using F#, but it uses a new ICellStyle ...

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

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+1 −0
How to set the cell color to a user defined value using NPOI from F#?

As far as I can tell (from F# at least), cell can only be colored using predefined NPOI.SS.UserModel.IndexedColors. From the available methods / properties, val it: ICellStyle = NPOI.XSSF.UserM...

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

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 2mo ago by toraritte‭  ·  last activity 2mo ago by toraritte‭

f#
50%
+0 −0
Does Socket.AcceptAsync throw SocketException for any transient reason?

I'm writing exception handling around a call to Socket.AcceptAsync in a loop. One of the exceptions it's documented to throw is SocketException, but the documentation is vague: An error occurred...

1 answer  ·  posted 2mo ago by Kevin Krumwiede‭  ·  last activity 2mo ago by Alexei‭

33%
+0 −2
module not found error, I need this speech directory for this project to work. [closed]

--- Here is the error message. Traceback (most recent call last): File "c:\Users\19185\Documents\GitHub\Chatty\Chatty\one_.py", line 3, in import azure.cognitiveservices.speech as speechsdk Mo...

0 answers  ·  posted 2mo ago by KunningFox‭  ·  closed 2mo ago by Alexei‭

22%
+0 −5
AttributeError: module 'azure.cognitiveservices.speech' has no attribute 'VoiceProfile' [closed]

I need to use azure.cognitiveservices.speech. However I am getting this error: Here is code on replit it produces the same error. https://replit.com/@mystickain420/Chatty main -- https://githu...

0 answers  ·  posted 2mo ago by KunningFox‭  ·  closed 2mo ago by Alexei‭

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+0 −4
Having problems with my php script [closed]

The exam checking for the backend is working perfectly well but the front end keeps saying an error occurred. Am like ok then tried the demo version replaced the javascript and everything i can rep...

0 answers  ·  posted 2mo ago by zick853‭  ·  closed 2mo ago by Mithical‭

75%
+4 −0
Wikidata: How do I ask for the start date of a property in SPARQL?

I have a SPARQL query to Wikidata that returns the names and handles and parties of politicians for whom a Mastodon address is stored at Wikidata. Filtered by nationality and with an output of the ...

0 answers  ·  posted 2mo ago by wasuko‭

50%
+0 −0
How to display overlapped content in an e-mail

I do need to create an email template using components where the wrapped text left side (td - 50%) is overlapping with the image ( td - 50%) like Venn Diagrams... Not exactly but somehow... I came...

2 answers  ·  posted 3mo ago by hackerindio‭  ·  last activity 3mo ago by gbjbaanb‭

66%
+2 −0
CS8032 analyzer warnings in empty EF Core project in Rider

I'm evaluating JetBrains Rider 2023.3 on Linux and almost immediately ran into a compiler warning that I don't understand. Attempting to isolate it, I created a new solution containing a .NET 6 cla...

1 answer  ·  posted 3mo ago by Kevin Krumwiede‭  ·  last activity 3mo ago by Kevin Krumwiede‭

88%
+14 −0
How does Zalgo Text work, and how can I prevent my application from accepting it?

A Zalgo Text is something like this: T̃͟͏̧̟͓̯̘͓͙͔o̤̫͋ͯͫ̂ ̥͍̫̻͚̦͖͇̌ͪ̇ͤ̑̐͋̾̕i̢͖̩͙͐͑ͬ̄̿̍̚ͅn̵̢̼̙̳̒̄ͥ̋̐v̡̟̗̹̻̜͕̲ͣ̐ͤͤ͒́oͫ͂̆͑ͩ҉͇̰͚̹̠̫͔̗k̷̭̬̭͙̹̺̯ͩ̌̾̒̋̓ͤ͛͘͠e̥͙̓̄̕ ̵̫͈ͪţ̱̺̺̑̿̉̌͛̂̇h͙̣̬̓̂͞ę̡̲̟͎͉̟͛̓̉̆̉͘ ͬ̒...

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

71%
+3 −0
PEP20 on namespaces: What exactly is it saying to do?

PEP20 aka the Zen of Python has a statement: Namespaces are one honking great idea -- let's do more of those! What exactly are we supposed to "do" according to this? Is it saying we should h...

0 answers  ·  posted 3mo ago by matthewsnyder‭  ·  edited 3mo ago by Karl Knechtel‭

81%
+7 −0
What is the point of triggering CI/CD with an empty git commit?

I read posts (e.g., 1, 2, 3) that recommend triggering a CI build process by pushing an empty git commit. I don't understand how this is a good idea as the commit history will be peppered with mea...

3 answers  ·  posted 4mo ago by toraritte‭  ·  last activity 3mo ago by matthewsnyder‭

66%
+4 −1
Does Python have a "ternary operator" (conditional evaluation operator like "?:" in other languages)?

Sometimes code needs to assign (or otherwise use) a value that depends on some condition. The naive approach is to use explicit branching, which in Python would look like: if some_condition(): ...

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

84%
+9 −0
Understanding mutable default arguments in Python

Consider this code example: def example(param=[]): param.append('value') print(param) When example is repeatedly called with an existing list, it repeatedly appends to the list, as ...

4 answers  ·  posted 5mo ago by Karl Knechtel‭  ·  last activity 3mo ago by matthewsnyder‭