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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)
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 4d ago by qohelet‭  ·  last activity 3d ago by qohelet‭

75%
+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 6d ago by qohelet‭  ·  last activity 5d ago by Iizuki‭

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 6d ago by Lundin‭  ·  last activity 5d ago by Lundin‭

66%
+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 11d ago by LyndonGingerich‭  ·  edited 10d ago by Michael‭

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 12d ago by WheatWizard‭  ·  last activity 11d ago by r~~‭

62%
+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 12d ago by Julius H.‭  ·  edited 12d ago by Julius H.‭

66%
+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 12d ago by aghast‭  ·  edited 10d ago by meta guy‭

57%
+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 13d ago by Julius H.‭  ·  last activity 10d ago by matthewsnyder‭

50%
+0 −0
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 13d ago by Julius H.‭  ·  edited 11d 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 14d ago by Julius H.‭  ·  last activity 14d ago by Julius H.‭

36%
+2 −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 16d ago by Julius H.‭  ·  last activity 11d ago by matthewsnyder‭

60%
+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 19d ago by Kevin Krumwiede‭  ·  last activity 18d ago by Kevin Krumwiede‭

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+1 −0
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 20d ago by propatience‭  ·  edited 20d ago by propatience‭

75%
+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 21d ago by klutt‭

php
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 24d ago by Iizuki‭  ·  edited 24d ago by Iizuki‭

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 30d ago by toraritte‭  ·  last activity 29d ago by Derek Elkins‭

f#
50%
+0 −0
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 30d 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

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

66%
+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 21d ago by Miss Skooter‭

75%
+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 5h ago by tmpod‭

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

80%
+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 1mo ago by Iizuki‭  ·  last activity 24d ago by Michael‭

git
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 1mo ago by toraritte‭  ·  edited 1mo ago by toraritte‭

f#
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

60%
+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

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 1mo ago by Karl Knechtel‭

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

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 1mo ago by Alexei‭

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 1mo ago by toraritte‭

f#
85%
+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

25%
+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

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

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

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

75%
+4 −0
What does "namespace" mean?

A well-known easter egg in Python displays some ideas about writing good Python code, credited to Tim Peters (one of the core developers). This question is about the last: Namespaces are one hon...

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

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

62%
+3 −1
How does a client verify a server's SSL certificate? What are the specific steps?

I have little to no idea what happens after a client obtains the server's certificate. It has to make sure that it (somehow) valid, but how?

1 answer  ·  posted 3mo ago by toraritte‭  ·  edited 3mo ago by toraritte‭

77%
+5 −0
Can GitHub rewrite authorship of commits?

GitHub has a setting wherein they offer to "anonymize" your user email from, say, somebody@example.com to somebody@users.noreply.github.com. I presume this is to prevent you from getting spam from ...

1 answer  ·  posted 3mo ago by Michael‭  ·  edited 3mo ago by matthewsnyder‭

77%
+5 −0
What is the purpose of having underscored names and then defining a non-underscored alias to it?

In a C implementation in <stdio.h> on Linux I saw something like: extern FILE *__stdinp; extern FILE *__stdoutp; extern FILE *__stderrp; And then: #define stdin __stdinp #define stdou...

1 answer  ·  posted 3mo ago by 90 98‭  ·  last activity 3mo ago by aghast‭

50%
+2 −2
What is the default port number of MariaDB?

What is the default port number of MariaDB database server? (Remembering defaults is surprisingly hard since usually you don't need to specify them..)

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

60%
+4 −2
How to speed up MySQL query?

I have a website about vacation villa rentals. Around 800 properties are listed. When i start a search, i get properties with my first query which filters type, style, area, no. of rooms, capacity ...

2 answers  ·  posted 3mo ago by erenlerhakan‭  ·  last activity 3mo ago by ArtOfCode‭

66%
+2 −0
How to programmatically evaluate Excel data validations using .NET?

What I would like to do: Set a cell value. Check with a program if cell values conform to data validation rules. I could extract all the information needed to create a validation function, b...

1 answer  ·  posted 3mo ago by toraritte‭  ·  last activity 3mo ago by toraritte‭

60%
+1 −0
Drop-down values in Excel cells are not specified in Data Validation rules and global search didn't find them in workbook, so where do they come from?

On top of values seemingly coming from nowhere in multiple columns, they also affect each other's behavior: In the GIF below, if the cells in the left column have no value selected, then there is n...

1 answer  ·  posted 3mo ago by toraritte‭  ·  edited 3mo ago by toraritte‭

83%
+8 −0
Git-ignoring files with special characters in their names, especially newlines

My actual motivation is to understand the semantics of the .gitignore file syntax in precise detail, for a program which is expected to emulate them as accurately as possible. However, while coming...

1 answer  ·  posted 3mo ago by Karl Knechtel‭  ·  last activity 3mo ago by Peter Taylor‭

66%
+2 −0
Which .NET project can programmatically validate a cell's value out of the box based on Excel data validation constraints?

Are any of the popular Excel .NET projects have a functionality similar to Apache POI's DataValidationEvaluator class?

1 answer  ·  posted 3mo ago by toraritte‭  ·  edited 3mo ago by toraritte‭