Hacker News: felixguendling

New comment by felixguendling in "OpenTrafficMap"

felixguendling — Wed, 29 Apr 2026 20:56:21 +0000

I guess we only find out if some people order those chips and check if there is some data. From my understanding the idea is the same like maps showing air planes or ships (for ships it’s AIS). So without volunteers/pioneers who participate we won’t know. It seems like traffic lights and trams also can send data.

New comment by felixguendling in "OpenTrafficMap"

felixguendling — Wed, 29 Apr 2026 20:37:49 +0000

It's based on Car2X/Vehicle2X data that's sent unencrypted and can be received with chips you can order from China.

New comment by felixguendling in "Hyper-optimized reverse geocoding API"

felixguendling — Thu, 19 Mar 2026 17:28:15 +0000

Have you tried MOTIS with only the geocoding enabled? This should be 1-2 orders of magnitude smaller.

New comment by felixguendling in "Text-Based Google Directions"

felixguendling — Wed, 25 Feb 2026 22:06:45 +0000

Similar just based on open source + open data https://social.tchncs.de/@Jbb/116082509413974306

New comment by felixguendling in "Beyond OpenMP in C++ and Rust: Taskflow, Rayon, Fork Union"

felixguendling — Sun, 28 Sep 2025 11:38:14 +0000

Would you recommend this as a "thread pool" / coroutine scheduler replacement for an application web server?

New comment by felixguendling in "Open Source Projects Receive Funding to Reclaim the Public Internet"

felixguendling — Wed, 23 Apr 2025 14:42:13 +0000

Thanks! Maintainer of MOTIS here. We're planning to bring support for NeTEx, SIRI and OJP to MOTIS and with those formats a lot of features that are only available with those formats but not with GTFS(-RT) (yet). But having them implemented will also help us to quickly activate them for GTFS(-RT) once GTFS(-RT) gains support.

New comment by felixguendling in "Why I'm leaving Elm (2020)"

felixguendling — Sun, 16 Feb 2025 20:53:40 +0000

I asked "Ask HN: Is Elm dead" in 2022 with mixed results. https://news.ycombinator.com/item?id=31485011

IMO it's safe to say that Elm is dead and won't come back with this attitude of the core team (which is not the only problem of the language). We never switched to Elm 0.19 from 0.18 but moved on to rewrite in Svelte 5 with TypeScript and never looked back.

New comment by felixguendling in "Portable and vendor neutral parallel programming on heterogeneous platforms"

felixguendling — Thu, 11 Apr 2024 22:12:32 +0000

Just found this and couldn't find anything about it but it looks interesting. Does anyone have experience with it? Seems like a competitor to CUDA from AMD and Intel?

Portable and vendor neutral parallel programming on heterogeneous platforms

felixguendling — Thu, 11 Apr 2024 22:11:14 +0000

Article URL: https://github.com/libocca/occa

Comments URL: https://news.ycombinator.com/item?id=40007350

Points: 1

# Comments: 1

New comment by felixguendling in "Show HN: htmz – a low power tool for HTML"

felixguendling — Mon, 19 Feb 2024 21:27:06 +0000

Regarding the size I would guess that if htmz would be extended to have the same features as htmx, it would also be similar in size? Would it make sense to modularize htmx in order to only pay for what you really use to support adding features without necessarily increasing the downloaded size?

New comment by felixguendling in "C Is the Greenest Programming Language"

felixguendling — Fri, 26 Jan 2024 10:14:29 +0000

Looking at the benchmark where C++ is worst compared to other languages, it's depending on the library used. I would guess if they used Google's re2 Regex library instead of Boost's, the result would be different.

https://github.com/google/re2

https://github.com/greensoftwarelab/Energy-Languages/blob/ma...

New comment by felixguendling in "Rkyv: A zero-copy deserialization framework for rust"

felixguendling — Sat, 13 Jan 2024 10:18:02 +0000

Exactly the same approach for C++ (including RelPtr which is called offset_ptr in cista): https://cista.rocks

New comment by felixguendling in "Ubicloud – open, free and portable cloud"

felixguendling — Thu, 17 Aug 2023 08:58:03 +0000

Let's assume, Hetzner or OVH themself would just take Ubicloud and offer this as a service without paying any money to Ubicloud. In this case, many customers would just use the Hetzner/OVH offer (everything from the same vendor = more convenient) and Ubicloud has no way to make money. The AGPL license would not prevent IaaS providers from doing so. I think it's not easy to build a stable business as a company if everything is OpenSource. If Ubicloud would be a pure community project, that would be a different story.

New comment by felixguendling in "Ubicloud – open, free and portable cloud"

felixguendling — Thu, 17 Aug 2023 06:52:42 +0000

Even with if the third party provider makes no improvements, they can still provide it cheaper because ubicloud pays the development costs? This is a business threat that would not be mitigated by AGPL-3.0?

New comment by felixguendling in "Show HN: Workout.lol – a web app to easily create a workout routine"

felixguendling — Mon, 10 Jul 2023 09:30:04 +0000

Very nice! What can be added is to group exercises in beginner, medium and advanced and add warmup and stretching routines.

New comment by felixguendling in "FOSDEM 2023 is live now"

felixguendling — Mon, 06 Feb 2023 20:56:17 +0000

I presented about MOTIS Project. Happy to share with you all the all the algorithmic details, our tech stack, etc, if you're interested. In the talk I just wanted to give a broad overview of what is MOTIS. I think it's really hard to explain data model, tech stack, or algorithms in depth in the time I had for my talk (10min).

New comment by felixguendling in "Ask HN: What happened to flatbuffers? Are they being used?"

felixguendling — Tue, 17 Jan 2023 21:26:02 +0000

If you're looking for something faster but C++ specific, more compact in serialized size, more efficient in serialization you can try cista: https://github.com/felixguendling/cista (Disclaimer: I'm the author, always happy for feedback, eg in the GitHub issues)

Ask HN: Is Elm Dead?

felixguendling — Mon, 23 May 2022 21:31:17 +0000

Elm looked very promising when it was new and made continuous progress for a while. But now the GitHub repositories don't show activity anymore. https://github.com/elm/compiler

Web technology is still moving fast and Elm just stopped. The version number indicates that it's still unstable (breaking changes expected).

The number of participants in 'State of Elm' also indicate declining interest: https://state-of-elm.lamdera.app/

Some ideas are really nice, so it would be a bummer if it dies.

Did I miss something?

Comments URL: https://news.ycombinator.com/item?id=31485011

Points: 40

# Comments: 19

New comment by felixguendling in "Real-Time Tokyo Subway Map"

felixguendling — Sun, 02 Jan 2022 13:20:15 +0000

Nice! We also did something similar:

Demo: https://europe.motis-project.de/

Project site: https://motis-project.de

Source: https://github.com/motis-project/motis

New comment by felixguendling in "Replace std:find_if in 80% of the cases"

felixguendling — Fri, 01 Oct 2021 21:30:39 +0000

When reading the title I thought that it is about complexity of linear search vs. better alternatives like hash sets/maps, or at least sorted data structures (binary search).

But if having linear complexity is fine, std::find_if/any_of/none_of/all_of/etc. are of course fine and you should prefer the version that's most expressive.