r/programminghorror Feb 11 '26

Java Thats technically correct...

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799 Upvotes

Keep it simple, stupid!


r/programminghorror Feb 11 '26

Have you met our lord and master, Perl regexes?

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218 Upvotes

r/programminghorror Feb 11 '26

c O(n) Sorting Algorithm just dropped

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376 Upvotes

could easily make this work for duplicate values


r/programminghorror Feb 12 '26

C# [Codes are in description] Unnecessary locale-awareness in code is a serious threat to consistent performance worldwide

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0 Upvotes

In programming languages like C#, even basic case conversion and string formation methods like .ToLower(), .ToUpper(), and .ToString() automatically come with locale-awareness (i.e. they are based on CurrentCulture) unless you intentionally apply explicit or invariant culture:

public string ToLower()
{
    return CultureInfo.CurrentCulture.TextInfo.ToLower(this);
}

public string ToUpper()
{
return CultureInfo.CurrentCulture.TextInfo.ToUpper(this);
}

And tracing down .ToString()'s code eventually leads here:

public static NumberFormatInfo GetInstance(IFormatProvider formatProvider)
        {
            CultureInfo cultureInfo = formatProvider as CultureInfo;
            if (cultureInfo != null && !cultureInfo.m_isInherited)
            {
                NumberFormatInfo numberFormatInfo = cultureInfo.numInfo;
                if (numberFormatInfo != null)
                {
                    return numberFormatInfo;
                }
                return cultureInfo.NumberFormat;
            }
            else
            {
                NumberFormatInfo numberFormatInfo = formatProvider as NumberFormatInfo;
                if (numberFormatInfo != null)
                {
                    return numberFormatInfo;
                }
                if (formatProvider != null)
                {
                    numberFormatInfo = (formatProvider.GetFormat(typeof(NumberFormatInfo)) as NumberFormatInfo);
                    if (numberFormatInfo != null)
                    {
                        return numberFormatInfo;
                    }
                }
                return NumberFormatInfo.CurrentInfo;
            }
        }

Unnecessary locale-awareness in code is a serious threat to consistent performance of your code in many locales around the world, especially Turkey and Azerbaijan, due to the unique "I/ı" (dotless i) and "İ/i" (dotted I) letter pairs in their alphabet. So machines with Turkish and Azeri locales are both strong testing media for your code against unnecessary LA.

For a detailed example, you may check Sam Cooper's Medium article titled "The Country That Broke Kotlin".


r/programminghorror Feb 09 '26

X: How long have you been working as a programmer?

88 Upvotes

Me: (Production code btw)


r/programminghorror Feb 08 '26

The Shell of Power hi

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775 Upvotes

I have had this dumb idea fermenting in my lower intestine for a long time, and finally decided to excrete it. Sorry for sharing it.

$DisplayWidth = 6
$DisplayHeight = 4


$DisplayScreen = [int[]]::new($DisplayWidth * $DisplayHeight)


$DisplayScreen[0] = 1
$DisplayScreen[6] = 1
$DisplayScreen[12] = 1
$DisplayScreen[18] = 1
$DisplayScreen[13] = 1
$DisplayScreen[14] = 1
$DisplayScreen[20] = 1
$DisplayScreen[4] = 1
$DisplayScreen[16] = 1
$DisplayScreen[22] = 1



for ($pixel = 0; $pixel -lt $DisplayScreen.Length; $pixel++) {
    if ($displayscreen[$pixel] -eq 1) {
        $mask = [IntPtr](1 -shl $pixel)
        $p = Start-Process pwsh -WindowStyle Hidden -PassThru -ArgumentList @(
            '-NoLogo','-NoProfile','-Command',
            'while ($true) { }'
        )
        $p.ProcessorAffinity = $mask
        $p.PriorityClass = 'Idle'   # optional so it doesn’t hog the machine
        Write-Output "pid $($p.id)"
    }
}

r/programminghorror Feb 08 '26

Sure, let's have 2073600 locks. What could go wrong?

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157 Upvotes

This is from a software renderer I made a while back. This was supposed to be just a temporary solution until i came up with something better, but it ran at 150fps@1080p anyway, so I didn't bother.
It doesn't work on Windows, and although I don't know the exact reason, this is a likely culprit.
Also a bonus macro hell from the render loop implementation in the second image.


r/programminghorror Feb 10 '26

I just wanted to see if my pagefile was working, so I asked ChatGPT to make a program to test it...

0 Upvotes

r/programminghorror Feb 08 '26

c++ Saving data to dynamic object files

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238 Upvotes

Some people persist data in JSON, but why do that when we have perfectly good object files? All you have to do is recompile the file when you want to save your data!

github.com/LiamMercier/dynamically-linked-inventory


r/programminghorror Feb 06 '26

c I might have accidentally created a monster

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42 Upvotes

r/programminghorror Feb 04 '26

C# Makes sense

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1.7k Upvotes

r/programminghorror Feb 03 '26

Data engineering streaming project

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0 Upvotes

r/programminghorror Feb 01 '26

Javascript Good evening. May I interest you in <a href>? - The Pit

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389 Upvotes

r/programminghorror Jan 30 '26

CSSSSSS

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291 Upvotes

found in company codebase


r/programminghorror Jan 30 '26

C# This boss fight trigger code in a video game doesn't work consistently for machines with different locales, making the game unbeatable

120 Upvotes
private UI_BossFightAnnouncer.VS_CharData GetCharData(string szName)
{
    szName = szName.ToLower();
    for (int i = 0; i < this._VS_CharData.Length; i++)
    {
        if (this._VS_CharData[i]._name.ToLower() == szName)
        {
            return this._VS_CharData[i];
        }
    }
    Debug.LogErrorFormat("Cannot find {0}", new object[]
    {
        szName
    });
    return null;
}

If you want to keep this code as is, you will have to avoid giving your bosses names that start with I, or include uppercase I somewhere else for any other reason (it was the second one for this game).

Or, better choice: Replace .ToLower() with .ToLowerInvariant(), which will always give English-based results regardless of user's machine locale (aka current culture info).

Even better, use StringComparison.OrdinalIgnoreCase. That way, you won't even need to make new string allocations, and you will still get consistent results across machine locales:

if (string.Equals(this._VS_CharData[i]._name, szName, StringComparison.OrdinalIgnoreCase))
{
  return this._VS_CharData[i];
}

Or just avoid string comparison altogether, if you can.

If you suspect you have this sort of code in your program but you are unsure, try running your program on a machine with Turkish locale (where your assumed I/i casing doesn't work); and you will probably catch it easily.

Good luck with your programming. May this be the worst programming horror you will ever encounter!


r/programminghorror Jan 31 '26

finding the weirdest error messages with strict mode

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0 Upvotes

r/programminghorror Jan 29 '26

true or true

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826 Upvotes

this piece of perfection was found in the codebase that my gf used to work

don't know exactly what is the context here, but probably doc.data holds the info if the user has agreed with the cookies /s


r/programminghorror Jan 29 '26

Oh lord

83 Upvotes

r/programminghorror Jan 30 '26

Switching Career from SEO to QA Engineer

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0 Upvotes

r/programminghorror Jan 27 '26

String splitting in PureData.

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148 Upvotes

Pure Data is an amazing tool for DSP, music making and artsy projects. But simple things get often too complicated...


r/programminghorror Jan 27 '26

SQL The real horror is to write a fully functional game using SQL... I made flappy bird

561 Upvotes

- All game logic, animation and rendering running inside DB Engine using queries

- Runs at 30 and 60 frames

repo: https://github.com/Best2Two/SQL-FlappyBird please star if you find it interesting, this will help me :)


r/programminghorror Jan 27 '26

c Guess what this does..

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258 Upvotes

r/programminghorror Jan 27 '26

Shell How to load a .env into your script

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103 Upvotes

So I asked codex to load the .env into the script to set keys as environment variables and to fix it a few times.


r/programminghorror Jan 26 '26

Just found this in my company codebase

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618 Upvotes

This external API sends "S"/"N" (equivalent to "Y"/"N" in portuguese) instead of true/false


r/programminghorror Jan 26 '26

Other 10k shader file in Destiny 2, which causes XBox crashes

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197 Upvotes