Hacker News: W0lf

New comment by W0lf in "Flipdiscs"

W0lf — Mon, 27 Apr 2026 05:38:18 +0000

I did the same for my office and bought used LAWO flipdot panels for this. Screenshot of the thing here: https://github.com/aivju/flipdotz

New comment by W0lf in "Ask HN: Share your personal website"

W0lf — Wed, 14 Jan 2026 19:11:40 +0000

https://www.kai-wolf.me/blog/

New comment by W0lf in "Street Fighter II, the World Warrier (2021)"

W0lf — Sun, 04 Jan 2026 16:40:22 +0000

Thank you for playing Wing Commander!

:-) Hits the same nerve for me.

New comment by W0lf in "10 years of personal finances in plain text files"

W0lf — Fri, 02 Jan 2026 18:59:23 +0000

I've been using MoneyMoney for over 12 years now (started Nov. 2013) on Mac and have never regretted it. I am automatically importing from all my bank accounts, including all statements and even track my portfolio with it. It can automatically categorize every transaction (basically string matching with OR clauses) and doing this consistently for years gave me pretty good insights on my spending behavior over time. It's a pity that they don't have a iOS app though.

New comment by W0lf in "Show HN: DeepSeek Your HN Profile"

W0lf — Tue, 28 Jan 2025 20:48:50 +0000

Pretty much on point. I liked it.

You're a seasoned freelance software consultant with a deep passion for C++ and computer vision. Your contributions on HN are a mix of technical insights, career advice, and a sprinkle of humor, making you a well-rounded and respected member of the community.

Friedman Podcast with Zelenskyy

W0lf — Sun, 05 Jan 2025 22:30:06 +0000

Article URL: https://www.youtube.com/watch?v=u321m25rKXc

Comments URL: https://news.ycombinator.com/item?id=42605610

Points: 4

# Comments: 0

New comment by W0lf in "3D Rotation Design"

W0lf — Wed, 06 Nov 2024 21:26:40 +0000

Isn’t arcball rotation the gold standard for rotating 3d objects?

New comment by W0lf in "Why Not Comments"

W0lf — Wed, 11 Sep 2024 18:04:55 +0000

My rule of thumb for code comments is to comment what's not in the code.

New comment by W0lf in "Colorize Lidar point clouds with camera images"

W0lf — Sat, 17 Aug 2024 17:12:55 +0000

As pointed out in my other comment, using a single image for point coloring is prone to errors due to noise, specular reflection and occlusion. I'd consider using a (normalized) cross-correlation approach with several images.

New comment by W0lf in "Colorize Lidar point clouds with camera images"

W0lf — Sat, 17 Aug 2024 17:02:35 +0000

I did work on this as part of my thesis quite a few years back at the university. One other optimization would be to process the points in parallel.

Regarding the coloring of each 3d point, it might be feasible to not use one camera image, but a weighted sum of all camera images that can see the same point in the scene. Each pixel color is then weighted with the scalar product of the points normal and the viewing direction of the camera. This would also regard for noise and specular reflections (which can mess up the original color).

New comment by W0lf in "In B-Flat (2009)"

W0lf — Wed, 27 Mar 2024 09:16:37 +0000

"In Bb" that is?

New comment by W0lf in "In B-Flat (2009)"

W0lf — Wed, 27 Mar 2024 08:54:59 +0000

Interesting, my first interpretation was letters for rows and numbers for columns, but apparently you noted it the other way around.

New comment by W0lf in "50 Algorithms Every Programmer Should Know (Second Edition)"

W0lf — Wed, 03 Jan 2024 09:38:21 +0000

Judging from the table of contents it seems that the first half of this book covers basic CS stuff (what is an algorithm, Big O notation, sorting and searching, data structures etc) and then discusses some machine learning basics before looking at the more recent deep learning architectures. I would not buy this book as there are plenty of (better) online resources and even better books IMHO such as the books from Bishop or Marsland.

New comment by W0lf in "Becoming a contractor"

W0lf — Sat, 02 Sep 2023 14:27:37 +0000

I am in my fifth year of being an independent software consultant/contractor. I live in Germany. I've had multiple gigs almost right from the start of being self employed. Almost always through one of the many recruiting firms. Reading his story, I do wonder though if my path is or has been somewhat special until now as I've heard many times now that being an independent software contractor (in the EU) is somewhat hard. I always had quite the opposite experience so I genuinely do wonder if I was simply lucky (until now that is. No one knows what the future holds).

I did specialize in Computer Vision, Image Processing, C++, Python and lately more and more DevOps if this is of any interest and my previously described luck depends on this specific field.

New comment by W0lf in "The C++ Standard Library: The Fourth Edition includes C++23"

W0lf — Tue, 07 Mar 2023 13:23:29 +0000

I happen to know the guy from the linked article from several meetups here in Germany and while I stick to the old saying that if you don't have anything nice to say about a person it's better to say nothing at all, I just want to say that I can somewhat relate as I do get cringe feelings as well. Try listening to one of his talks and make up your own mind.

On a side note: It's interesting to see a list of stated facts that a _professional C++ developer must know_ without having any real world, industrial experience with small/middle or large codebases for the last 15+ years. So there's that.

New comment by W0lf in "Modern Mono"

W0lf — Mon, 13 Feb 2023 19:31:37 +0000

I have switched to Operator Mono about 10 years ago. This font is not free though. However it was the only font (at the time I was looking at at least) that had a monospaced italic version which I found looked slick. So I ended up buying that font and used it ever since.

Ask HN: What have you been learning this week?

W0lf — Sun, 12 Feb 2023 21:08:17 +0000

Comments URL: https://news.ycombinator.com/item?id=34766970

Points: 2

# Comments: 1

New comment by W0lf in "[dead]"

W0lf — Sat, 07 Jan 2023 15:07:42 +0000

I happen to have read her book on Cracking the Coding Interview which I found was a nice refresher for interview-type like questions. She writes:

> And for all of this I still blunder my way through an exercise to write a function which returns a boolean in response to the question of whether sequence A is a sub-sequence of sequence B. I still draw a blank when asked what the magnitude of complexity is for the guests function I just wrote

which I have a hard time believing as she covers this in a whole chapter of her own book. Clearly she knows how to do this stuff, given that she wrote the book herself.

My guess is that either the (US) market is currently facing a recession which has hit the dev market as well by now or she is somewhat of a generalist with no deep knowledge of a specific area and the companies she were interviewing for are searching for a specialized person rather.

New comment by W0lf in "Modeling my Grandpa with 3D Photogrammetry (2021)"

W0lf — Sun, 01 Jan 2023 23:06:17 +0000

I did something similar over a decade ago as part of my master thesis back in university [1]. IIRC this was before most of the tools existed that were mentioned in the article. If you don’t have anything else other than a camera at hand (and no recent iPhone), this should be the most straight forward/cost effective way to generate metrically correct 3d models

[1]: https://youtu.be/9hAadMszs5k

New comment by W0lf in "Ask HN: Concepts that clicked only years after you first encountered them?"

W0lf — Sun, 01 Jan 2023 14:40:58 +0000

Discrete mathematics and all sorts of its application in real-world (software development) related problems. Also how any given solution to a problem in one problem domain can be transferred to a problem in another unrelated domain. Think Galois theory but waaaay less fancy :-)