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OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI

https://simonwillison.net/2025/Dec/12/openai-skills/
323•simonw•8h ago•184 comments

macOS 26.2 enables fast AI clusters with RDMA over Thunderbolt

https://developer.apple.com/documentation/macos-release-notes/macos-26_2-release-notes#RDMA-over-...
373•guiand•11h ago•201 comments

Beautiful Abelian Sandpiles

https://eavan.blog/posts/beautiful-sandpiles.html
14•eavan0•3d ago•5 comments

GNU Unifont

https://unifoundry.com/unifont/index.html
202•remywang•11h ago•53 comments

1300 Still Images from the Animated Films of Hayao Miyazaki's Studio Ghibli (2023)

https://www.ghibli.jp/info/013772/
85•vinhnx•5h ago•15 comments

Rats Play DOOM

https://ratsplaydoom.com/
263•ano-ther•12h ago•94 comments

Ferrari's Formula 1 Handovers: Handovers from Surgery to Intensive Care 2008;pdf

https://gwern.net/doc/technology/2008-sower.pdf
44•bookofjoe•6d ago•13 comments

Show HN: Tiny VM sandbox in C with apps in Rust, C and Zig

https://github.com/ringtailsoftware/uvm32
119•trj•10h ago•7 comments

Sick of smart TVs? Here are your best options

https://arstechnica.com/gadgets/2025/12/the-ars-technica-guide-to-dumb-tvs/
257•fleahunter•19h ago•254 comments

Gild Just One Lily

https://www.smashingmagazine.com/2025/04/gild-just-one-lily/
13•serialx•4d ago•1 comments

Easel Now Has Stencils

https://easel.games/blog/2025-dec-update
6•BSTRhino•4d ago•1 comments

So What Should We Call This – A Grue Jay?

https://cns.utexas.edu/news/research/so-what-should-we-call-grue-jay
47•surprisetalk•5d ago•20 comments

Ensuring a National Policy Framework for Artificial Intelligence

https://www.whitehouse.gov/presidential-actions/2025/12/eliminating-state-law-obstruction-of-nati...
108•andsoitis•1d ago•170 comments

Show HN: I made a spreadsheet where formulas also update backwards

https://victorpoughon.github.io/bidicalc/
116•fouronnes3•1d ago•64 comments

50 years of proof assistants

https://lawrencecpaulson.github.io//2025/12/05/History_of_Proof_Assistants.html
80•baruchel•8h ago•12 comments

Freeing a Xiaomi humidifier from the cloud

https://0l.de/blog/2025/11/xiaomi-humidifier/
72•stv0g•1d ago•36 comments

The Coming Need for Formal Specification

https://benjamincongdon.me/blog/2025/12/12/The-Coming-Need-for-Formal-Specification/
22•todsacerdoti•5h ago•17 comments

Go is portable, until it isn't

https://simpleobservability.com/blog/go-portable-until-isnt
64•khazit•5d ago•54 comments

Apple has locked my Apple ID, and I have no recourse. A plea for help

https://hey.paris/posts/appleid/
353•parisidau•3h ago•161 comments

The Checkerboard

https://99percentinvisible.org/episode/650-the-checkerboard/
43•thread_id•7h ago•9 comments

Koralm Railway

https://infrastruktur.oebb.at/en/projects-for-austria/railway-lines/southern-line-vienna-villach/...
298•fzeindl•21h ago•176 comments

Capsudo: Rethinking sudo with object capabilities

https://ariadne.space/2025/12/12/rethinking-sudo-with-object-capabilities.html
61•fanf2•10h ago•34 comments

Google Removes Sci-Hub Domains from U.S. Search Results Due to Dated Court Order

https://torrentfreak.com/google-removes-sci-hub-domains-from-u-s-search-results-due-to-dated-cour...
90•t-3•5h ago•20 comments

Doxers Posing as Cops Are Tricking Big Tech Firms into Sharing People's Data

https://www.wired.com/story/doxers-posing-as-cops-are-tricking-big-tech-firms-into-sharing-people...
46•iamnothere•3h ago•12 comments

Slax: Live Pocket Linux

https://www.slax.org/
21•Ulf950•4d ago•3 comments

String theory inspires a brilliant, baffling new math proof

https://www.quantamagazine.org/string-theory-inspires-a-brilliant-baffling-new-math-proof-20251212/
136•ArmageddonIt•16h ago•139 comments

Motion (YC W20) Is Hiring Senior Staff Front End Engineers

https://jobs.ashbyhq.com/motion/715d9646-27d4-44f6-9229-61eb0380ae39
1•ethanyu94•11h ago

Poor Johnny still won't encrypt

https://bfswa.substack.com/p/poor-johnny-still-wont-encrypt
44•zdw•4h ago•42 comments

Pg_ClickHouse: A Postgres extension for querying ClickHouse

https://clickhouse.com/blog/introducing-pg_clickhouse
89•spathak•2d ago•32 comments

CM0 – A new Raspberry Pi you can't buy

https://www.jeffgeerling.com/blog/2025/cm0-new-raspberry-pi-you-cant-buy
184•speckx•17h ago•47 comments
Open in hackernews

Parametric Modeling with Grasshopper

https://baharmon.github.io/basics
40•downboots•7mo ago

Comments

ddkto•7mo ago
It’s hard to believe this is the first time I’ve seen Grasshopper on HN!

Just this morning, a colleague showed me a web app for building option exploration that he had vibe coded on Replit that wrapped around existing core logic in a Grasshopper script hosted in RhinoCompute [1].

The combination of visual programming, the tree data structure and Rhino’s geometry engine has made this the de facto standard for parametric design in architecture (sorry, Dynamo…)

[1] https://github.com/mcneel/compute.rhino3d

downboots•7mo ago
Similar interface idea echoed:

Unity

https://game-ace.com/wp-content/uploads/2020/04/Bolt5.gif

Blender

https://blenderartists.org/uploads/default/original/4X/3/0/c...

Chemcad

https://img.informer.com/screenshots/3390/3390423_1.gif

Even KiCad if we stretch the analogy

Would be good to see this for general programs, or with modular AI agents, or for ODE compartment models.

Also of note: https://worrydream.com/ExplorableExplanations

FormFollowsFunc•7mo ago
Am I wrong in thinking that Grasshopper is procedural modeling and not parametric modeling? Parametric modeing is used in software like Solid Works where you don’t have nodes but have parameters, a constraint system and construction history. Solid Works was developed in the 90s while Grasshopper came out in 2007. Another is example is Pro/Engineer from Parametric Technology Company (PTC) which came out in 1988. Patrik Schumacher, an architect coined the term parametricism in 2008. His employees created node graphs in Grasshopper while he just tweaked the parameters. I wonder if that’s why he came up with the term. Grasshopper has parameters but what makes it different from industrial design CAD is that you construct geometry with a series of nodes i.e. a procedure.
Duanemclemore•7mo ago
Grasshopper doesn't have to be used strictly "procedurally" as you can reference in geometry from Rhino. However, some of us try to work as procedurally as possible - creating everything strictly within Grasshopper if at all possible. It -is- also possible to use it as a very strong parametric design tool. There is no looping exposed to the user in a normal gh script - but used in the way I think is best, you're always applying conditional logic to make the data and operations do what you want.

A quick example - you can use what are called gates and filters in Grasshopper, so you can do things like route faces that meet some criterion you've set through one set of operations and those which don't through another. Then you can use pattern matching or other operations to weave the data back together in the proper order...

dmos62•7mo ago
You seem insightful on this subject. What other parametric design tools, techniques or technologies do you consider noteworthy?
Duanemclemore•7mo ago
Hey, I'm not used to feeling "seen" on HN! Architect, architecture professor, and computational designer here. This is a great first intro to Grasshopper. The links he provides near the top are next steps for those interested in more.

I've found that it opens computational design and programming more broadly up to a broader audience. It has found huge purchase in architecture specifically. I would say this is as much cultural as technical, as architects generally are less rigorously systematic and more global in their thought processes. As people who work largely in the visual domain we are also "visual learners" so to speak.

I first started dipping my toe into Grasshopper in about 2010, and feel that I was fairly expert by about 2015. SHAMELESS PLUG [0]. I've used it at a high level since, and taught it extensively.

Most users - almost all for a very long time - used it primarily as a tool to create, draw, and fabricate more crazier geometry easier. And it is certainly good for that. But in using it - and especially in teaching it - I also find that it is excellent to demystify the design process in ways that folks like programmers instinctively understand. That is you have to be able to break complex problems down to a series of atomically small operations, then build those back up to sophisticated outcomes.

Maybe the most valuable aspect of this - both in my practice and teaching - is understanding how to work both as procedurally and parametrically as possible (I'll put more about this under the comment to that end that's already been posted). Many, if not most, of our jewelry pieces are standalone grasshopper files which reference no outside data at all.

Anyway - I have much, much more I could say about: its use in architecture, design, and education; its relation to learning to think and create a rigorous and flexible design process; and more. But it's great to see it here!

[0] Since 2015 my partner and I have run jewelry company X Over Zero - https://xover0.com/ . All of our designs start as my mathematical and geometric explorations, coded in Grasshopper.

p.s. Incidentally I'm also based in the deep south like Mr. Harmon. And - although we must know people in common, sadly this is the first time he's hitting my radar. I'll be emailing him by the end of the night. Thank you OP for bringing him and his work to my attention!

Duanemclemore•7mo ago
If you want to check out the motherlode of other visual programming languages, platforms, etc check out Ivan Reese's Visual Programming Codex.

https://github.com/ivanreese/visual-programming-codex

https://github.com/ivanreese/visual-programming-codex/blob/m...

Although I'm going to have to create a pull request because he doesn't have Flowgorithm on there, which is an excellent tool for teaching the very very first steps of learning to program...

http://flowgorithm.org/

Terrible name, wonderful tool.

msds•7mo ago
It’s fun seeing an uptick of rhino/grasshopper content here lately - two articles in a week?! The McNeel extended universe is a fun place to play around in, and I’ve met lots of great people since I started working on Rhino.
jazzyjackson•7mo ago
Grasshopper is dope. Years ago I used it to pipe in skeleton and RGB mesh data from a Microsoft Kinect and then sent Open Sound Control packets to Pd-extended to trigger sound events with my body. Really great for general purpose event oriented programming

https://youtu.be/VOu3waxAYDw