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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.

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Quick hints: tag:tagname, user:xxx, "exact phrase", post_type:xxx, created:<N{d,w,mo,y}, score:>=0.5

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2.6k posts
 
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Code Reviews Health checks with caching in ASP.NET Core

private readonly int _checkInterval; What are the units? I have to search for usages to find out. I strongly favour using TimeSpan instead of int. private static readonly SemaphoreS...

posted 2y ago by Peter Taylor‭

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Q&A How to inject environment configuration values when deploying an Angular application in Kubernetes or similar infrastructure?

Context I am currently migrating a Web application from on-prem infrastructure to K8s. The legacy infrastructure relies on defining some tokens in the configuration files and these are replaced d...

2 answers  ·  posted 2y ago by Alexei‭  ·  last activity 2y ago by Derek Elkins‭

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Q&A Adding elements to wrapper after calling wrap doesn't work

I'm trying to do some DOM manipulation in jQuery, but am having issues with creating wrapper elements. For some reason, prepending to the wrapper doesn't work after I call wrap. Code <html>...

1 answer  ·  posted 2y ago by Moshi‭  ·  last activity 2y ago by Mithical‭

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Q&A How to programmatically get current wallpaper file path?

This answer will use Python 3 for code examples. I encourage people to post other answers for other languages. I'll continue to update this answer, as I'm able, based on comments with tested/verifi...

posted 2y ago by ghost-in-the-zsh‭  ·  edited 2y ago by ghost-in-the-zsh‭

Answer
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Q&A Strict aliasing rules and function boundaries

Assuming that there are no alignment problems between the two pointer types (impl-defined), the code is otherwise well-defined. As per the quoted 6.3.2.3 C allows pretty much any form of wild and c...

posted 2y ago by Lundin‭

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Q&A How to compress columns of dataframe by function

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]} ...

2 answers  ·  posted 2y ago by mcp‭  ·  last activity 1y ago by mr Tsjolder‭

Question python pandas
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Q&A Strict aliasing rules and function boundaries

Let's analyze this code, assuming an architecture where the alignment of int64_t is the same as that of double: void bar(double *f, int64_t *j) { *(int64_t *)f = *j; } void foo(void) ...

1 answer  ·  posted 2y ago by alx‭  ·  edited 2y ago by Lundin‭

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Q&A How do I get something similar to dictionary views, but for sequences?

The dictionary methods .keys(), .values(), and .items() all return view objects. Said objects reflect any changes to the underlying dictionary. This is often useful. Is there a way to get such a v...

1 answer  ·  posted 1y ago by ajv‭  ·  last activity 1y ago by r~~‭

Question python python-3
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Q&A memcmp(3) memory containing invalid values

MEMCMP simply compares the memory bits between two locations. This has nothing to do with whatever those bits might mean. Your first example, on the other hand, compares the contents of variable ...

posted 2y ago by Olin Lathrop‭  ·  edited 2y ago by Olin Lathrop‭

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Q&A How do I return ISO day of week in Redshift?

Quick answer (DATE_PART(dayofweek, my_datetime) + 6) % 7 Slow answer For avoidance of doubt, here is what I believe you currently have (assuming an input called my_datetime): DATE_PART(dayofw...

posted 1y ago by trichoplax‭

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Q&A How do I return ISO day of week in Redshift?

I have a query summarizing some transaction data that I'd like to summarize by day of week. For my use case, I need to return weekdays formatted according to ISO 8601, so Monday must be the first d...

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

Question sql format redshift
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Q&A Is it possible to get the current function in a trace function?

I'm trying to subclass pdb to have a debugger that, in case of a call to a decorated function, can "step in" the decorated function directly and skip the decorator content altogether. A well-behave...

1 answer  ·  posted 1y ago by luser‭  ·  last activity 1y ago by r~~‭

Question python debugging
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Q&A Updating the database reverses previous changes

The Code using Microsoft.EntityFrameworkCore; public class BloggingContext : DbContext { public DbSet<Blog> Blogs { get; set; } public DbSet<Post> Posts { get; set; } ...

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

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Q&A Can Matlab packages have subdirectories?

Well, minutes after posting my question, I found the disappointing answer: no. Original answer found on https://www.mathworks.com/matlabcentral/answers/184191-can-i-have-subdirectories-in-a-packag...

posted 1y ago by zaen‭

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Code Reviews Vanilla JS Functions Review

Without seeing the HTML and CSS for the page I'm going to be making assumptions about the effects that the JavaScript has. Feel free to include the other files if the lack of context leads me to in...

posted 1y ago by trichoplax‭  ·  edited 1y ago by trichoplax‭

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Meta I didn't get notification after user mentioning me in comment

In this post, @r~~ mentioned me in comment but, I didn't get any notification. This may be a bug. Or, he didn't mention properly cause, he put a comma beside my name without space. I don't know wha...

1 answer  ·  posted 3y ago by deleted user  ·  last activity 3y ago by ArtOfCode‭

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Q&A Write to same file from multiple threads

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...

2 answers  ·  posted 3y ago by Silicomancer‭  ·  edited 1y ago by Shree‭

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Q&A How to tackle database migrations failure during application initialization on production systems?

Context My ASP.NET Core application got stuck in Production with a 5xx error. By inspecting the logs, I have noticed that a database error occurred during application initialization, namely a SQL ...

1 answer  ·  posted 3y ago by Alexei‭  ·  last activity 3y ago by misha130‭

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Q&A Warn of implicit cast in a function's arguments with GCC?

From the page you linked: -Wconversion Warn for implicit conversions that may alter a value. This includes conversions between real and integer, like abs (x) when x is double; conversions betwe...

posted 3y ago by r~~‭

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Q&A Are JavaScriptless forms accessible?

As indicated by your source using (or not) JS is mostly independent of accessibility since the latter is obtained mainly through HTML and CSS. As a side note, while not using JavaScript is an opti...

posted 3y ago by Alexei‭

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Q&A What is an example for a URI which is not a URL?

This article shows in a concise and graphical way the difference between URIs and URLs. A URI is an identifier of a specific resource. Like a page, or book, or a document. A URL is special ...

posted 3y ago by Alexei‭  ·  edited 3y ago by Wezl‭

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Q&A Convert .npy files in a directory to images (.png)

A possible parallel solution using imageio: from imageio import imwrite from multiprocessing import Pool from numpy import load from pathlib import Path def npy2png(npyFile): imwrite(...

posted 3y ago by Patol75‭

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Meta Code formatting of previews

I just noticed that I'm not getting code formatting in the preview window when I write an answer or make an edit. This is very useful to have. Not sure if it's a bug so I'm posting this as a featu...

0 answers  ·  posted 3y ago by Lundin‭  ·  edited 3y ago by Monica Cellio‭

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Q&A PHP emails are sent when $message is a string, but not when its an array

As explained by manassehkatz, the message (aka the body) is a text in PHP (and many other programming languages). If your e-mails have a certain structure, you should create a function that takes ...

posted 3y ago by Alexei‭

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Q&A How to tackle database migrations failure during application initialization on production systems?

manually apply migrations for production (more manual work which is something we want to minimize) Do not do this. We are in an age where DevOps is king. Adding more manual steps to your deplo...

posted 3y ago by misha130‭

Answer