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Visual Lean: An experimental graphical user interface for writing Lean code

https://leangame.autumnofautumn.com/
1•Luc•2m ago•0 comments

Ask HN: What should I do with 50k verified emails

1•zerodollar•6m ago•0 comments

Big Tech Will Not Broadcast Your Dissent

https://www.motherjones.com/politics/2026/10/meta-x-no-kings-elections-protests-midterms-free-spe...
1•robtherobber•7m ago•0 comments

SaaS Development Outsourcing: 20 Questions to Ask Before You Sign

https://www.technology.org/2026/09/30/saas-development-outsourcing-20-questions-to-ask-before-you...
1•Aninay•9m ago•0 comments

Nordstjernen Web Browser

https://nordstjernen.org/
1•edward•10m ago•0 comments

JEP 543: Structured Concurrency (Java 28)

https://openjdk.org/jeps/543
2•lichtenberger•11m ago•0 comments

Anthropic disclosed an $80.7B net loss for the first half of 2026

https://www.wsj.com/tech/ai/anthropic-revenue-growth-ipo-accaf0f1
1•joennlae•12m ago•0 comments

Is Hacker News still a good predictor of tech trends?

https://installmap.com/research/hacker-news-lead-over-google
1•markusweber97•12m ago•0 comments

AI video effects from one or two photos, without writing prompts

https://aieffectstudio.com/
1•visiohex•13m ago•0 comments

Signs your software project needs rescuing – not another sprint

https://businesscloud.co.uk/opinion/signs-your-software-project-needs-rescuing-not-another-sprint/
1•Aninay•14m ago•0 comments

Did Satoshi Get Bitcoin Wrong? Claude's NSA Discovery Sparks Debate

https://tech.yahoo.com/ai/claude/articles/did-satoshi-bitcoin-wrong-claudes-123000042.html
1•cybermango•15m ago•0 comments

ByteDance, Alibaba, Tencent place over $35B worth of Nvidia chip orders

https://www.reuters.com/business/retail-consumer/bytedance-alibaba-tencent-place-over-35-billion-...
1•giuliomagnifico•16m ago•0 comments

Claude Code Spotted a Cryptominer on Mac While Building a Temperature App

https://www.gadgetreview.com/claude-code-spotted-a-cryptominer-on-mac-while-helping-to-build-a-te...
2•cybermango•17m ago•0 comments

Learning by building a multi-agent design lab. Yet, single agent works better

https://github.com/bencodev/dsgnrd
2•benoit_cotte•20m ago•0 comments

Finland Buying a Million Landmines

https://yle.fi/a/74-20252139
1•vrganj•20m ago•0 comments

Programming by hand is fun but it's better to not have to do it any more

https://twitter.com/GruPiotr/status/2112825278397341710
2•piotrgrudzien•23m ago•0 comments

European personal agent for knowledge workers

https://usebris.com/
2•emilsmeznieks•24m ago•0 comments

Guy made a site to spot SLOP games on NEXT FEST – it is vibe coded

https://www.reddit.com/r/IndieDev/comments/1xbgnwh/im_building_a_site_that_lets_you_filter_next_f...
2•ibackstrom•25m ago•0 comments

PolicyWatcher – Independent monitor of privacy, ToS and AI policy changes

https://policywatcher.online
1•a9i•27m ago•0 comments

Parallelizing MySQL Snapshots

https://materialize.com/blog/parallelizing-mysql-snapshots/
1•def-•28m ago•0 comments

We Replaced Fyxer Overnight

https://madewithlove.com/blog/how-we-replaced-fyxer-overnight/
1•andreascreten•35m ago•2 comments

Predicting cancer survival using face photographs

https://www.thelancet.com/journals/landig/article/PIIS2589-7500(26)00079-8/fulltext
1•fabianlindfors•35m ago•0 comments

File Attack Deep Dives: Office Documents as an Attack Surface

https://mohitkhare.com/blog/file-attack-document-macros/
3•mkfeuhrer•37m ago•0 comments

Spread: Launch faster. Break nothing. Know why

https://www.spread.ai
1•doener•37m ago•0 comments

Battle Drones–a vibe coded RTS with audio-based multiplayer

https://simonwillison.net/2026/Oct/20/battledrones/
1•red369•40m ago•0 comments

Zoomies.sh

https://zoomies.sh/
2•jnnngs•43m ago•0 comments

Ahead-of-Time Compilation of JavaScript to WebAssembly via Static Type Inference [video]

https://vimeo.com/1234257957
1•Klaster_1•45m ago•0 comments

A Bicycle Journey Across Brazil to Find a Vanishing Savanna

https://e360.yale.edu/features/2026-film-contest-second-place-cerrado
2•throwaway2037•46m ago•0 comments

Ask HN: What's a good RSS feed reader?

2•karimmaassen•51m ago•0 comments

Manufacturing Nostalgia: Paula Sweeney on Longing for How Life Once Felt

https://philosophybreak.com/articles/manufacturing-nostalgia-paula-sweeney-on-longing-for-how-lif...
1•robtherobber•52m 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