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The top secret URSALA, RAQUEL, and FARRAH satellites

https://www.thespacereview.com/article/4951/1
5•Bluestein•4m ago•0 comments

NASA observatory could be weeks away from falling to Earth after failed rescue

https://www.cnn.com/2026/09/30/science/nasa-swift-observatory-falling
1•everybodyknows•4m ago•0 comments

1.25M synthetic emails, chats, and calendar events for RAG and LLMs

https://huggingface.co/datasets/sinabis-group/sinabis-synthetic-corporate-dataset
1•sinabis_1•5m ago•0 comments

Custom Mesh Radio Interface for 1980s Computers [video]

https://www.youtube.com/watch?v=4jlctItN5FI
1•Teever•6m ago•0 comments

IANA's email about why example.com changed

https://www.oliverdunk.com/2026/09/30/iana-reply
1•oliverdunk•6m ago•0 comments

Echo – A SOTA writing model for style imitation

https://echo.fulcrum.inc/
3•etherio•7m ago•0 comments

SELP: Self-Guided Symptom Check and Pain Assessment Tool

https://selp.life
1•zilijonas•7m ago•0 comments

Selpflow – Personalized Workout and Nutrition Plans

https://selpflow.com/en
1•zilijonas•7m ago•0 comments

Ask HN: Do you procrastinate less when coding with AI?

1•amichail•7m ago•0 comments

Distillation Defenses Easily Break After Reinforcement Learning

https://arxiv.org/abs/2609.35699
1•ollybritton•8m ago•0 comments

Parasitic Computing

https://en.wikipedia.org/wiki/Parasitic_computing
1•simonpure•11m ago•0 comments

China's 2,250kW chargers are in service, US thinks about 750kW next year

https://electrek.co/2026/09/30/chinas-2250kw-chargers-are-already-in-service-while-us-thinks-abou...
1•cisc•11m ago•0 comments

Show HN: Another Email Provider - Inbound

https://inbound.new
1•ryanvogel•13m ago•0 comments

AI invite codes and referral codes, live

https://aiinvitecode.com
1•febeee•14m ago•0 comments

Uber Wait Times Rise 19% as Prices Climb 53%: Study

https://www.businessinsider.com/uber-wait-times-rise-19-as-prices-climb-53-study-2026-9
4•richardbarosky•14m ago•1 comments

Warp Factories Overview

https://docs.warp.dev/factories/
1•handfuloflight•14m ago•0 comments

The Airbnb Backfire

https://www.businessinsider.com/selling-vacation-home-airbnb-rental-real-estate-price-cuts-2026-9
2•toomuchtodo•16m ago•0 comments

Cycode Extends Its ADLC Security Capabilities to Developers' Workstations

https://radicaldatascience.wpcomstaging.com/2026/09/25/cycode-extends-its-adlc-security-capabilit...
2•ddgutierrez•20m ago•0 comments

Jev predicts every plate appearance of the 2026 MLB postseason

https://live.bitgraph.ing/
2•mikeargento•21m ago•0 comments

A Cold War Spy Satellite Named After Farrah Fawcett Just Blew Apart in Orbit

https://gizmodo.com/a-cold-war-spy-satellite-named-after-farrah-fawcett-just-blew-apart-in-orbit-...
7•PLenz•23m ago•0 comments

Walking Men from Around the World

https://mossandfog.com/walking-men-from-around-the-world/
3•gaws•25m ago•0 comments

Sycophantic Chatbots Cause Delusional Spiraling, Even in Ideal Bayesians

https://arxiv.org/abs/2602.19141
2•luispa•27m ago•0 comments

After Jenny Simpson&Jeff Browning, What Runners Should Know About Cardiac Events

https://www.trailrunnermag.com/training/after-jenny-simpson-and-jeff-browning-heres-what-runners-...
1•bookofjoe•30m ago•0 comments

Hegseth Announces AutoWarCom

https://www.militarytimes.com/news/your-military/2026/09/30/hegseth-announces-new-four-star-comma...
6•nick__m•31m ago•1 comments

Show HN: DragomanD – local language translator for Linux

https://dragomand.l10n-bg.dev/
3•eniac111•31m ago•0 comments

Expanding My Music Pipeline

https://www.coryd.dev/posts/2026/expanding-my-music-pipeline
1•nullpad•32m ago•0 comments

Show HN: Certify you wrote it and not AI

https://iwrote.co
2•arpanghoshal•34m ago•0 comments

YouTube lunatic designed and 3D printed a working mechanical calculator

https://www.theregister.com/offbeat/2026/09/30/youtube-lunatic-designed-and-3d-printed-a-working-...
2•joebuckwilliams•34m ago•0 comments

Swatting Calls: A Couple's Fight Against Online Stalkers and the Police

https://www.nytimes.com/2026/09/30/us/swatting-milwaukee-couple-settlement.html
4•nonfamous•35m ago•0 comments

Watch the Rogue AI Committee Hearing

https://www.hsgac.senate.gov/subcommittees/dmdcc/hearings/rogue-ai-securing-the-homeland-against-...
1•sans_souse•35m ago•0 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