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Ask HN: What Are You Working On? (July 2026)

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Re: Ask HN: What Are You Working On? (July 2026)

#611

Post by manish_gill »

Learning Lock-Free Data Structures:

- https://parallelthoughts.xyz/2026/03/cas-me-if-you-can-part-...

- https://parallelthoughts.xyz/2026/06/cas-me-if-you-can-part-...

- https://parallelthoughts.xyz/2026/07/cas-me-if-you-can-part-...

Mostly me exploring how to build a Treiber Stack (first in Go, then in C++) -> Figuring out ABA and Use-After-Free in the C++ implementation, and then touching a bit of Hazard Pointers, and ending with a benchmark comparison b/w a mutex and a lock-free version of the stack.

LLMs are a great tool at teaching and explaining. I don't use it to generate code, but it takes away the pain of searching and setting up dependencies, tools, etc. So I can focus only on the concepts and then do the testing.

It is not perfect, but I learned something that I did not know thanks to these techniques. And that too without reading dense and obscure books. I love it.

Re: Ask HN: What Are You Working On? (July 2026)

#612

Post by whyage »

matty22 wrote: post #552

I'm working on hunting down as much publicly accessible stained glass and mapping it. No exciting libraries or frameworks, but if you know of some great stained glass in your area, please document it! https://stainedglassatlas.com/

Beautiful. Keep at it!

Re: Ask HN: What Are You Working On? (July 2026)

#613

Post by efazati »

I'm working on a technical interview service that brings up a real production environment and also lets users use agents and our system tells the interviewer how the candidate really did.

Also, in this environment, users can have a full cluster with Kubernetes, Docker, or normal Linux, with a database and all sorts of dependencies.

Please check it out and let me know what you think: https://easyenv.io/

Re: Ask HN: What Are You Working On? (July 2026)

#615

Post by Foffle »

An automated, full garment knitting machine that can fit on a desk.

There are only a few knitting machines that can automatically do everything required to knit a complete garment, and they are large, heavy and extremely expensive. I'm aiming to trade off speed against size and cost to create something akin to a 3D printer for knitwear.

I've been testing out various ideas for six months now, and I think I have a workable concept, but there's still a lot of work to do!

Re: Ask HN: What Are You Working On? (July 2026)

#616

Post by jorisw »

ricohageman wrote: post #561

My city caps how many shared scooters and bikes each operator may put on the street, and how long a vehicle may sit unused. In 2024, an activist group did a one-off analysis on the problem (they found ~1.5x more scooters than permitted) based on an open GBFS data-feed that shows where scooters and bikes currently are. The municipality confirmed the data but called the situation "not undesirable." The site, https://de…

Any reason you wouldn't expand this to cover other cities as well?

Re: Ask HN: What Are You Working On? (July 2026)

#619

Post by yitchelle »

I am building an newsletter for Short Science Fiction, using news stories of the day as inspiration. Purposely limiting the length to 3 chapters.

Currently removing the paywall from all my stories. If I have missed one, let me know.

https://threechaptersofscifi.substack.com/

Re: Ask HN: What Are You Working On? (July 2026)

#620

Post by rjzzleep »

Working on project-hami.io, but recently decided that all the new markdown based presentation tools have far too much HTML dependency, so I decided to build my own, with custom extensions and plugins. It's supposed to support some basic structures that allow easy creation of presentations, but the editable odp conversion is proving to be a nightmare. It should be possible, but I need help.

https://github.com/slidr-cli/slidr

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