this post was submitted on 13 Nov 2025
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[–] Xylight@lemdro.id 6 points 6 days ago

The link is a proxied image link for some reason.

Original link

[–] cloudy1999@sh.itjust.works 4 points 6 days ago
  1. N-deep loops mixed with gotos, throws, multiple returns, and mixed memory management contracts.

#include "globals.h"

// please help

[–] Kazumara@discuss.tchncs.de 2 points 6 days ago

With the short variable you probably also get shadowing. That's super fun in a new code base.

Or another favourite of mine: The first time I had to edit a perl script at work someone had used a scalar and a hash with the same name. Took me a while to realize that scalars, arrays, and hashes have separate namespaces, and the two things with seemingly the same name were unrelated.

[–] tdawg@lemmy.world 121 points 1 week ago (5 children)

Ngl that's like baby levels of nasty code. The real nasty shit is the stuff with pointless abstractions and call chains that make you question your sanity. Stuff that looks like it's only purpose was to burn the clock and show off a niche language feature. Or worse than that even is when the project you inherit has decade old dependencies that have all been forked and patched by the old team

If all I had to worry about was organization and naming I'd be over the moon

[–] dohpaz42@lemmy.world 65 points 1 week ago (5 children)

Git commits with message saying “pushing changes” and there are over 50 files with unrelated code in it.

[–] tdawg@lemmy.world 40 points 1 week ago (1 children)
[–] pinball_wizard@lemmy.zip 22 points 1 week ago* (last edited 1 week ago)

"Fix for critical issue."

Followed by an equally large set of files in a commit with just the message:

"Fixup"

And then the actual fix turns out to be mixed in with "Start sprint 57 - AutoConfiguration Refactor" which follows "Fixup"

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[–] themaninblack@lemmy.world 22 points 1 week ago (1 children)

Former coworkers: “oh, these two lines are the same in function x and function y. TIME TO ABSTRACT”

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[–] AllNewTypeFace@leminal.space 92 points 1 week ago (1 children)

Even worse than there being no comments: the code is extensively commented, but its function has drifted from what the comments describe to the point where they are actively misleading.

[–] Jankatarch@lemmy.world 14 points 1 week ago (1 children)

The good old "signal left when switching to right lane."

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[–] GreenKnight23@lemmy.world 38 points 1 week ago (2 children)

longest file I have ever maintained contained 50,000 lines of code.

fifty THOUSAND.

forgive me for not weeping for 2000 lines.

my advice, don't fucking touch it. pull out as much functionality out of it into other things over time.

there will come a day when you can throw it away. maybe not today, maybe not tomorrow... but some day.

[–] meekah@discuss.tchncs.de 27 points 1 week ago* (last edited 1 week ago) (1 children)

Yeah, been there. The codebase I worked on also had a single method with 10k lines.

The database IDs were strings including the hostname of the machine that wrote to the DB. Since it was a centralized server, all IDs had the same hostname. The ID also included date and time accurate to the millisecond, and the table name itself.

Me: Mom, can we have UUIDs? Mom: We have UUIDs at home UUIDs at home: that shit

[–] rbn@sopuli.xyz 17 points 1 week ago

You should add the local weather forecast, a random fun fact and the canteen menu of the day to the key to make it more interesting to read.

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[–] Epzillon@lemmy.world 35 points 1 week ago* (last edited 1 week ago) (1 children)

Jesus i worked at exactly this kind of project once. The only other dev was also very hostile and protective of this position. He did not want me there in the slightest. Took about 6 months before we cancelled the contract since this dude was just actively harrassing me in Teams DMs on the daily and he just ignored all my concerns regarding maintainability since "he could understand the code" and i was probably just "not experienced enough".

Don't downplay what this does to your mental health. 5 years of workplaces like this and I'm now starting to see a therapist due to exhaustion disorder symptoms in my goddamn 20s. Take care our there!

[–] tiramichu@sh.itjust.works 12 points 1 week ago

So infuriating when you have some dickhead making themselves unfireable by intentionally convoluting the codebase and chasing out any other hire. And even worse when management bought into it and think the guy's an actual irreplaceable genius.

Probably even believes it himself. I hate narcissists.

[–] tonytins@pawb.social 27 points 1 week ago (1 children)

I was part of project that scoffed at the idea documenting code. Comments were also few and far between. In retrospective, it really seemed like they wanted to give that elitist feel because everything reeked of wanting to keep things under wraps despite everything being done out in the freakin' open.

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[–] Adalast@lemmy.world 26 points 1 week ago (4 children)

I literally told my boss that I was just going to rebuild the entire pipeline from the ground up when I took over the codebase. The legacy code is a massive pile of patchwork spaghetti that takes days just to track down where things are happening because someone, in their infinite wisdom, decided to just pass a dictionary around and add/remove shit from it so there is no actual way to find where or when anything is done.

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[–] MadMadBunny@lemmy.ca 23 points 1 week ago (1 children)
[–] janus2@lemmy.zip 37 points 1 week ago (8 children)

your paycheck is $5000 because you know COBOL

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[–] madjo@feddit.nl 22 points 1 week ago (1 children)

ARGH this triggered a bit of PTSD for me....

"We're going to convert these COBOL applications to C#, and you need to test that the new application works exactly the same, including the same bugs as the old application."
"Ok, where's the specifications and test reports of the old COBOL applications?"
"They were lost to time, we don't know where they are."
"Ok, so how are the developers going to write the C# code?"
"They're going to read the COBOL scripts and recreate them into C#, we advise you do the same."

Cue me spending a month trying to decypher the COBOL gobbledigook into inputs and outputs, and write testcases based on that. And after that month was up, and I had delivered my testcases, they told me that my services were no longer needed.

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[–] unimalion@sh.itjust.works 21 points 1 week ago (3 children)

I just inherited my first codebase a few months ago. It's like this everywhere and original developer was fired, so what should sometimes be a simple fix turns into a full day of finding what needs to change. Any recommendations on fixing/maintaining code like this or should I just make it the next person's problem?

[–] Lightfire228@pawb.social 34 points 1 week ago* (last edited 1 week ago) (2 children)
  • if it's not in git / SVC, add it as is. Create a "refactor" branch, and liberally use commits

  • Treat it like a decompilation

Figure out what something does, and rename it (with a stupidly verbose name, if you have to). Use the IDE refactor tools to rename all instances of that identifier

  • Take a function, figure out what it does, and refactor it in a way that makes sense to you

  • Use the editor's diff mode to compare duplicate code, extract out anything different into a variable or callback, and combine the code into a function call. Vscode's "select for compare" and "compare with selected" are useful for this

  • Track what you're doing / keep notes in something like Obsidian. You can use [[Wikilinks]] syntax to link between notes, which lets you build a graph structure using your notes as nodes

  • be cognizant of "Side Effects"

For example, a function or property, or class might be invoked using Reflection, via a string literal (or even worse, a constructed string). And renaming it can cause a reflective invocation somewhere else random to fail

Or function or operator overloading/overiding doing something bizarre

Or two tightly coupled objects that mutate each other, and expect certain unstated invariants to be held (like, foo() can only be called once, or thingyA.len() must equal thingyB.len()

  • write tests if you can, either using a testing framework or custom Python scripts

You can use these to more thoroughly compare behavior between the original and a refactor

[–] Lightfire228@pawb.social 17 points 1 week ago (4 children)
  • if something feels too "heavy", like it's doing xml formatting, file manips, a db insert, and making coffee, all in a single class or function

Separate out those "concerns", into their own object/interface, and pass them into the class / function at invocation (Dependency Injection)

  • use "if guards" and early returns to bail from a function, instead of wrapping the func body with an if

public Value? Func(String arg) {
  if (arg.IsEmpty()) {
    return null;
  }
  
  if (this.Bar == null) {
    return null;
  }

  // ...
  return new Value();


  /// instead of

  if (!arg.IsEmpty) {
    if (this.Bar != null) {
      // ...
      return new Value();
    }
  }
return null;
}
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[–] hex123456@sh.itjust.works 14 points 1 week ago

Add comments as you go

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[–] henfredemars@lemdro.id 21 points 1 week ago (1 children)

Hey! This was my first real job. Is Matlab code written by physicists who just recently learned programming.

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[–] gingersight@programming.dev 19 points 1 week ago (1 children)

Oh, it's only the files that have over 2k lines of code? Hell, I'll take that over what I'm dealing with now. I've got multiple FUNCTIONS that are over 2k lines. >:(

[–] ripcord@lemmy.world 14 points 1 week ago (4 children)

Yeah, I dont see a big problem with files over 2000 lines in some cases, as long as things remain well writrej, organized, abstractd.

One piece of garbage that I'll never touch again hae most functions this size. One was 50,000 lines! Hundreds.of lines of if/else, half of the functions passed the same 60 arguments because he didn't understand classes or even dictionaries, etc etc. And was used heavily.

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[–] tiredofsametab@fedia.io 18 points 1 week ago (3 children)

You got 3 letters?! Luck!

I worked at a japanese company whose engineers we're former NTT developers. Copypasta (i.e. not using functions), inefficient algos, single-letter var names, remote code execution from code as root, etc. good times!

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[–] HugeNerd@lemmy.ca 18 points 1 week ago (2 children)

That's what agentic AI is for! Your OS will figure out by itself what you are doing and weave together a shambolic rococo digital house of cards that will be not just undocumented but utterly incomprehensible.

It's fine, just get a 5GHz CPU with 48 cores, 1TB of DDR5 HBM super RAM, and maybe a few petabytes of storage (in the cloud in a flatpack Docker that runs on a VM), so that you can finally make that button blue.

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[–] Jankatarch@lemmy.world 18 points 1 week ago (4 children)

Time to go around commenting stuff yourself!

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[–] ChickenLadyLovesLife@lemmy.world 18 points 1 week ago (4 children)

There are no comments in the code

At my last job, I was assigned to a project being run by a straight-out-of-college developer who felt that not only were comments unnecessary, they were actually a "code smell", a sign of professional incompetence on the part of whoever added them. It's an insane philosophy that could only appeal to people who have never had to take over an old codebase.

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[–] ieGod@lemmy.zip 17 points 1 week ago (1 children)

I'll get shit on for suggesting it but this is a great use case for AI: comment the code and generate some basic docs. Even if it's wrong it'll give you a sense of where to start looking for flows.

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[–] explodicle@sh.itjust.works 16 points 1 week ago (1 children)

I've been doing this for years at my current job. It has become a masterpiece of refactoring and comments. They weren't even asking the right questions. I'm very proud of myself.

So naturally, I'm about to get fired and have the whole thing redone by AI.

[–] Shanmugha@lemmy.world 2 points 6 days ago

Then re-hired for 3x salary to make it work again, I hope. Or just watch the company/project fail spectacularly

[–] moseschrute@lemmy.world 15 points 1 week ago (3 children)

Bonus frame:

The 2000 line file is one function

[–] mdhughes@lemmy.sdf.org 1 points 6 days ago

Oh, so you worked with my ex-coworker.

It implemented a database. Giant branching if/for loop.

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[–] Blackmist@feddit.uk 14 points 1 week ago

I didn't even know we were hiring ...

[–] 87Six@lemmy.zip 12 points 1 week ago

Then you fix 90% of a problem and get blamed when the rest of 10% doesn't work

[–] _stranger_@lemmy.world 12 points 1 week ago (3 children)

That time I started a new job and my first task was "fix bash"...and then I discovered a multi megabyte monstrosity called "bash.sh"

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[–] onnekas@sopuli.xyz 12 points 1 week ago

"Code IS documentation"

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