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Filing the corners off my MacBooks

https://kentwalters.com/posts/corners/
866•normanvalentine•12h ago•424 comments

Optimal Strategy for Connect 4

https://2swap.github.io/WeakC4/explanation/
53•marvinborner•2d ago•8 comments

BlueHammer abuses Windows Defender's update process to gain SYSTEM access

https://hackingpassion.com/bluehammer-windows-defender-zero-day/
13•BullsEye0•1h ago•4 comments

Starfling: A one-tap endless orbital slingshot game in a single HTML file

https://playstarfling.com
198•iceberger2001•2d ago•57 comments

1D Chess

https://rowan441.github.io/1dchess/chess.html
834•burnt-resistor•19h ago•144 comments

Volunteers turn a fan's recordings of 10K concerts into an online treasure trove

https://apnews.com/article/aadam-jacobs-collection-concerts-internet-archive-chicago-b1c9c4466a2d...
87•geox•3d ago•7 comments

Installing every* Firefox extension

https://jack.cab/blog/every-firefox-extension
421•RohanAdwankar•13h ago•57 comments

Artemis II safely splashes down

https://www.cbsnews.com/live-updates/artemis-ii-splashdown-return/
927•areoform•10h ago•288 comments

Chimpanzees in Uganda locked in eight-year 'civil war', say researchers

https://www.bbc.com/news/articles/cr71lkzv49po
339•neversaydie•15h ago•198 comments

Artemis II is competency porn

https://lizplank.substack.com/p/artemis-ii-is-competency-porn-and
13•jgrodziski•2h ago•15 comments

AI assistance when contributing to the Linux kernel

https://github.com/torvalds/linux/blob/master/Documentation/process/coding-assistants.rst
339•hmokiguess•16h ago•246 comments

WireGuard makes new Windows release following Microsoft signing resolution

https://lists.zx2c4.com/pipermail/wireguard/2026-April/009561.html
482•zx2c4•19h ago•142 comments

Sybilproof reputation mechanisms (2005) [pdf]

https://dl.acm.org/doi/pdf/10.1145/1080192.1080202
11•perfmode•3d ago•0 comments

Industrial design files for Keychron keyboards and mice

https://github.com/Keychron/Keychron-Keyboards-Hardware-Design
381•stingraycharles•18h ago•119 comments

Show HN: Pardonned.com – A searchable database of US Pardons

21•vidluther•4h ago•3 comments

Productive Procrastination

https://www.maxvanijsselmuiden.nl/blog/productive-procrastination/
33•maxvij•5h ago•9 comments

Bevy game development tutorials and in-depth resources

https://taintedcoders.com/
87•GenericCanadian•2d ago•18 comments

CPU-Z and HWMonitor compromised

https://www.theregister.com/2026/04/10/cpuid_site_hijacked/
338•pashadee•21h ago•92 comments

JSON formatter Chrome plugin now closed and injecting adware

https://github.com/callumlocke/json-formatter
225•jkl5xx•16h ago•112 comments

Helium is hard to replace

https://www.construction-physics.com/p/helium-is-hard-to-replace
318•JumpCrisscross•20h ago•222 comments

20 years on AWS and never not my job

https://www.daemonology.net/blog/2026-04-11-20-years-on-AWS-and-never-not-my-job.html
163•cperciva•5h ago•33 comments

A practical guide for setting up Zettelkasten method in Obsidian

https://desktopcommander.app/blog/zettelkasten-obsidian/
56•rkrizanovskis•2d ago•29 comments

Quien – A better WHOIS lookup tool

https://github.com/retlehs/quien/
46•bretthopper•7h ago•14 comments

France's government is ditching Windows for Linux, says US tech a strategic risk

https://www.xda-developers.com/frances-government-ditching-windows-for-linux/
31•pabs3•2h ago•14 comments

Italo Calvino: A traveller in a world of uncertainty

https://www.historytoday.com/archive/portrait-author-historian/italo-calvino-traveller-world-unce...
79•lermontov•11h ago•15 comments

How Passive Radar Works

https://www.passiveradar.com/how-passive-radar-works/
4•surprisetalk•1d ago•0 comments

The Bra-and-Girdle Maker That Fashioned the Impossible for NASA

https://thereader.mitpress.mit.edu/the-bra-and-girdle-maker-that-fashioned-the-impossible-for-nasa/
94•sohkamyung•2d ago•5 comments

Watgo – A WebAssembly Toolkit for Go

https://eli.thegreenplace.net/2026/watgo-a-webassembly-toolkit-for-go/
97•ibobev•16h ago•7 comments

Investigating Split Locks on x86-64

https://chipsandcheese.com/p/investigating-split-locks-on-x86
59•ingve•3d ago•20 comments

Launch HN: Twill.ai (YC S25) – Delegate to cloud agents, get back PRs

https://twill.ai
67•danoandco•18h ago•69 comments
Open in hackernews

Parametric Modeling with Grasshopper

https://baharmon.github.io/basics
40•downboots•11mo ago

Comments

ddkto•11mo 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•11mo 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•11mo 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•11mo 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•11mo ago
You seem insightful on this subject. What other parametric design tools, techniques or technologies do you consider noteworthy?
Duanemclemore•11mo 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•11mo 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•11mo 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•11mo 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