David Pfohmann
@davidpfohmann
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I write software the past 25 years or so. Prev Lead Senior Graphics Programmer @Ubisoft. Retro gamedev enthusiast. Ping me for project inquiries.
Joined July 2012
Day 12 of #AdventOfCode: Thats the last day, had some discussions with GPT but eventually he found a solution (rinse and repeat pasting the instruction). *Phew* still no need to read what the task is all about. This wraps up my #vibecoded #AdventOfCode.
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Day 11 of #AdventOfCode: Pasted todays challenge to GPT (never read the instruction). Had a bit of discussion ("i don't have local file system to load data from") but all good: Both solutions solved w/o issue, only need to remind GPT to speed up part 2 a bit. Good day for #vibe
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Day 10 of #AdventOfCode: GPT has no problem to solve the first part. The second part is super slow. GPT suggests to use "pulp" to speed up things, it's no cheating if it's vibe coding. So good enough.
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Day 9 of #AdventOfCode: GPT failed to find a solution. Had to go to reddit to grab another one. Gave it to GPT to let it rework the solution (because vibe coding). GPT suggests to drastically optimize "Part 2" - of course I want this. Runtime increase from 40ms to hours. Perfect!
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I've completed "Laboratories" - Day 7 - Advent of Code 2025 https://t.co/SpzuSoCW7v This was a good day for vibe coding again. Just pasted the description and got the result. What was the task about again?? I will never know. :-) #AdventOfCode
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Todays #AdventOfCode GPT struggled and never found a valid solution for part 2. The first day I actually looked into the task description and wrote a own solution. Very sad how quickly AI breaks down.
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but i got the stars.. thats the short term success thinking of modern times. so why complain
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Vibe coded myself through the first #AdventOfCode days. Conclusion: I don't know what the problems where about, just copy and pasted the description to GPT till the result was accepted. Learn effect is absolutely ZERO.
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https://t.co/82rNylTSOR Its kinda funny it was Rust which tore down half the internet. :)
blog.cloudflare.com
Cloudflare suffered a service outage on November 18, 2025. The outage was triggered by a bug in generation logic for a Bot Management feature file causing many Cloudflare services to be affected.
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Real engines use z-up
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I agree
Unpopular opinion: We should stop calling ourselves engineers. We're not engineers. We're programmers.
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@CostaAl4 It is nonsense to suggest you can’t write any app, of any complexity, in C. I do find a light level of C++ beneficial for many larger projects, but it can also go tragically wrong. Sometimes, specific language features can be transformative valuable, but not nearly as often as
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Python is actually super slow
Over the last 10 years, I’ve learned something: Every single person claiming that “Python is slow” tends to be a newcomer with no experience building software. They are usually dropouts of a bad JavaScript bootcamp. More importantly, if you think that Python isn’t a
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Web dev twitter seems finally to discover debuggers, wow
i've finally gotten around to trying `debugger;`in JavaScript my eyes have finally been opened
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Does #cpp has an entry in https://t.co/T8gqnM9SQm already? If not its about time.
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This is one reason why '(blindely) trust the compiler to optimize for you' was and is bad advice.
More testing on struct equality codegen... What if we write normal code comparing all the eight 8-bit fields... Clang optimizes to a single uint64 compare. GCC and MSVC don't. They emit eight cmp+jump pairs. This is horrible. So many unpredictable branches.
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I wrote down my thoughts about the current state of public game technoloy vs custom tech and why I think more projects should dare to write their own tech again https://t.co/qmQfNJLZxC
#gamedevelopment #gametech #gameengine
linkedin.com
There is this ongoing discussion about game engines. Ever since the rise of general-purpose engines, people tend to move away from custom technology and try to fit their game into a premade piece of...
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Our talk from REAC 25 is now available online! You can download the slides here: https://t.co/xRugMu3MDj The recording will be published in the coming days—stay tuned! Direct Links: - PDF: https://t.co/P2B5eDb0Es - PPT: https://t.co/2y3b4QEwjV
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