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Social Media Bans for Kids Need Smarter Safety Design

https://spectrum.ieee.org/social-media-bans
1•rbanffy•1m ago•0 comments

There's a new way to break RSA that's faster than anything we've seen before

https://arstechnica.com/security/2026/09/theres-a-new-way-to-break-rsa-thats-faster-than-anything...
1•jnord•1m ago•0 comments

Dumpster-Dived Window AC Unit Becomes Ground-Source Heat Pump

https://hackaday.com/2026/09/22/dumpster-dived-window-a-c-becomes-ground-source-heat-pump/
1•toomuchtodo•3m ago•1 comments

Ask HN: Is Opus 5.5 another step change?

1•consumer451•3m ago•0 comments

Fatal shooting on a crowded Amsterdam terrace followed an argument, police say

https://www.at5.nl/artikelen/240089/politie-dodelijke-schietpartij-op-vol-terras-ndsm-kade-volgde...
1•matonias•4m ago•0 comments

Itch Scratching

https://pluralistic.net/2026/09/25/other-people/
1•hn_acker•4m ago•0 comments

Why Not Save Your Time with These Agentic RAG Patterns?

https://medium.com/@ZikoZero011/rag-is-easy-until-the-questions-stop-being-easy-a76186e11394
3•Natashiiy•5m ago•1 comments

Lab on a Contact Lens Can Measure Stress Through Serotonin

https://spectrum.ieee.org/serotonin-stress-smart-contact-lens
1•marc__1•5m ago•0 comments

Show HN: MyA11yReport MCP – Build and test accessible websites with AI

https://mya11y.report/mcp/
1•charlesloubao•5m ago•0 comments

Airnet – Radio on Air

https://www.airnet.live/
1•christianmm•6m ago•0 comments

The implicit cognition of relationships: Inattention to attractive alternatives [pdf]

https://static1.squarespace.com/static/56cf3dd4b6aa60904403973f/t/5717915562cd94792b6d605c/146116...
1•luispa•9m ago•0 comments

Accelerated Out of Core Shuffling

https://quasiben.github.io/blog/ooc-shuffling-rapidsmpf/
1•quasiben•9m ago•0 comments

Prima: NASA will try to build a billion-dollar space telescope in record time

https://arstechnica.com/space/2026/09/nasa-green-lights-billion-dollar-infrared-observatory-for-l...
1•rbanffy•9m ago•0 comments

Meta Threads ban wave suspends Kobo CEO and others

https://www.threads.com/@mtamblyn/post/DdqEWIGAF1g
1•Lucent•10m ago•1 comments

AI Is a Boring Technology

https://www.chrbutler.com/ai-is-a-boring-technology
3•devonnull•11m ago•0 comments

Woman tells Senate Flock(YC17) of wrongful arrest, 86 hours solitary confinement [video]

https://www.youtube.com/watch?v=o9S_qn7oaw0
1•dlg•11m ago•0 comments

Lightspeed: Build real-time apps the Laravel way

https://innerloop.works/blog/introducing-lightspeed
1•jv22222•12m ago•0 comments

No designer, no coding → blasa.shop

https://blasa.shop/
1•maherzaidoun•15m ago•0 comments

What's the Ideal Company-Brain Harness?

https://ferran.sh/writing/whats-the-ideal-company-brain-harness
1•ferran9908•15m ago•0 comments

Jev-Mem: System-One-Controlled Agentic Memory for Efficient AI Agents

https://academy.dair.ai/papers/jev-mem-system-one-controlled-agentic-memory-for-efficient-ai-agen...
1•omarsar•15m ago•0 comments

Show HN: OOMU is a free macOS native desktop AI harness (local and cloud)

https://oomu.ai/download.html
1•jeff-oomu•16m ago•0 comments

Notes from Python Packaging Council's first meeting

https://discuss.python.org/t/notes-from-python-packaging-councils-first-meeting/109203
1•zahlman•17m ago•0 comments

Turtle Island isn't the Indigenous term you think it is [video]

https://www.youtube.com/watch?v=cY2mwuIzFI0
1•zahlman•17m ago•0 comments

Tensor Data Interchange for AI/ML Systems: A Survey and the Hurray Proposal

https://www.pascalgillet.net/hurray/docs/dev/prior-art.html
1•pascalgillet•18m ago•0 comments

Hype Is a Business Tool

https://jenson.org/hype/
2•andsoitis•20m ago•1 comments

Kicki: A DECsystem1060 – Interim Computer Museum

https://icm.museum/blog/?p=207
2•rbanffy•21m ago•0 comments

Paranoia-Sans: A Conspiratorial Typeface

https://github.com/flegfleg/Paranoia-Sans
2•birdculture•21m ago•0 comments

Altman-backed Praxis plans a $1B AI-powered town in Uruguay

https://timesofindia.indiatimes.com/technology/tech-news/sam-altman-backed-praxis-plans-1-billion...
3•aanet•23m ago•3 comments

Anthropic's AI biolab finds 'CRISPR-like' DNA in viruses. What's next?

https://www.nature.com/articles/d41586-026-03039-6
3•sbulaev•26m ago•1 comments

Show HN: Recurse – Develop and deploy specialist agents faster

https://recurse.run
2•ozankabak•27m ago•1 comments
Open in hackernews

Ask HN: Which function definition keyword do you prefer, def or fn?

1•winwang•1y ago
I'm curious about what people think of `def` vs `fn`, two short keywords for starting function definitions.

...Or maybe we should subscribe to the church of `df`, haha.

Comments

sitkack•1y ago
def could be for lots of things, fn is for functions. I don't think it matters much as long as you have one. C would have been so much easier to parse. Just copy Zig or Rust.
butlersean•1y ago
def means define, could be used to define all kinds of things

fn isnt a legitimate short form of function

fun doesnt work because of the amusement factor

func is the only alternative we have left

sitkack•1y ago
How about unicode or emojis?

These don't have the full fidelity as hn scrubs emojis

add = (a, b) -> a + b

a, b ⟹ a + b

λ add(a, b): ↪ a + b

johncoltrane•1y ago
"def" is too generic.

"fn" is too cryptic.

"function" is better than the two.

MultifokalHirn•1y ago
Agreed