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Veo 3 and Imagen 4, and a new tool for filmmaking called Flow

https://blog.google/technology/ai/generative-media-models-io-2025/
255•youssefarizk•2h ago•135 comments

Litestream: Revamped

https://fly.io/blog/litestream-revamped/
30•usrme•28m ago•3 comments

The NSA Selector

https://github.com/wenzellabs/the_NSA_selector
56•anigbrowl•1h ago•12 comments

Deep Learning Is Applied Topology

https://theahura.substack.com/p/deep-learning-is-applied-topology
278•theahura•6h ago•139 comments

Gemma 3n preview: Mobile-first AI

https://developers.googleblog.com/en/introducing-gemma-3n/
33•meetpateltech•2h ago•39 comments

Robin: A multi-agent system for automating scientific discovery

https://arxiv.org/abs/2505.13400
81•nopinsight•4h ago•14 comments

Show HN: 90s.dev – Game maker that runs on the web

https://90s.dev/blog/finally-releasing-90s-dev.html
169•90s_dev•5h ago•65 comments

The Dawn of Nvidia's Technology

https://blog.dshr.org/2025/05/the-dawn-of-nvidias-technology.html
63•wmf•3h ago•13 comments

Show HN: A Tiling Window Manager for Windows, Written in Janet

https://agent-kilo.github.io/jwno/
148•agentkilo•5h ago•37 comments

Red Programming Language

https://www.red-lang.org/p/about.html
27•hotpocket777•2h ago•7 comments

Show HN: Juvio – UV Kernel for Jupyter

https://github.com/OKUA1/juvio
56•okost1•3h ago•17 comments

GPU-Driven Clustered Forward Renderer

https://logdahl.net/p/gpu-driven
64•logdahl•4h ago•15 comments

Ashby (YC W19) Is Hiring Engineering Managers

https://www.ashbyhq.com/careers?utm_source=hn&ashby_jid=933570bc-a3d6-4fcc-991d-dc399c53a58a
1•abhikp•3h ago

The emoji problem (2022)

https://artofproblemsolving.com/community/c2532359h2760821_the_emoji_problem__part_i?srsltid=AfmBOor9TbMq_A7hGHSJGfoWaa2HNzducSYZu35d_LFlCSNLXpvt-pdS
278•mtsolitary•10h ago•45 comments

Making Video Games (Without an Engine) in 2025

https://noelberry.ca/posts/making_games_in_2025/
456•selvan•14h ago•195 comments

ChatGPT Helps Students Feign ADHD: An Analogue Study on AI-Assisted Coaching

https://link.springer.com/article/10.1007/s12207-025-09538-7
16•paulpauper•2h ago•5 comments

Google AI Ultra

https://blog.google/products/google-one/google-ai-ultra/
112•mfiguiere•2h ago•116 comments

Gail Wellington, former Commodore executive, has died

https://www.legacy.com/us/obituaries/name/gail-wellington-obituary?id=58418580
36•erickhill•2d ago•11 comments

The Fractured Entangled Representation Hypothesis

https://github.com/akarshkumar0101/fer
37•akarshkumar0101•4h ago•20 comments

Show HN: Olelo Foil - NACA Airfoil Sim

https://foil.olelohonua.com/
23•rbrownmh•3h ago•8 comments

The Lisp in the Cellar: Dependent types that live upstairs [pdf]

https://zenodo.org/records/15424968
70•todsacerdoti•6h ago•14 comments

A simple search engine from scratch

https://bernsteinbear.com/blog/simple-search/
212•bertman•10h ago•43 comments

The Last Letter

https://aeon.co/essays/how-the-last-letters-of-the-condemned-can-teach-us-how-to-live
35•HR01•3h ago•10 comments

Reports of Deno's Demise Have Been Greatly Exaggerated

https://deno.com/blog/greatly-exaggerated
146•stephdin•8h ago•148 comments

Animations Using Math Editor

https://luiscristovao.github.io/CSS-Animation-Engine/crazy_animations/game.html
6•ltc_123•3d ago•1 comments

Production tests: a guidebook for better systems and more sleep

https://martincapodici.com/2025/05/13/production-tests-a-guidebook-for-better-systems-and-more-sleep/
45•mcapodici•3d ago•5 comments

Teachable Machine

https://teachablemachine.withgoogle.com/
55•tosh•4h ago•8 comments

Google is giving Amazon a leg up in digital book sales

https://www.washingtonpost.com/technology/2025/05/16/google-amazon-ebooks-apps/
70•bookofjoe•3d ago•41 comments

llm-d, Kubernetes native distributed inference

https://llm-d.ai/blog/llm-d-announce
87•smarterclayton•7h ago•13 comments

Launch HN: Opusense (YC X25) – AI assistant for construction inspectors on site

19•rcody•4h ago•12 comments
Open in hackernews

The Lisp in the Cellar: Dependent types that live upstairs [pdf]

https://zenodo.org/records/15424968
70•todsacerdoti•6h ago
Downloadable: https://zenodo.org/records/15424968/files/deputy-els.pdf

Comments

droideqa•5h ago
Sadly "deputy clojure" on Google brings no results...

The only hint is this repo[0] referenced in the paper.

[0]: https://gitlab.com/fredokun/deputy

agumonkey•3h ago
Pretty readable code
reuben364•4h ago
Thinking out aloud here.

One pattern that I have frequently used in EMACS elisp is that redefining a top-level value overwrites that value rather than shadowing it. Basically hot reloading. This doesn't work in a dependently typed context as the type of subsequent definitions can depend on values of earlier definitions.

    def t := string
    def x: t := "asdf"
    redef t := int
redefining t here would cause x to fail to type check. So the only options are to either shadow the variable t, or have redefinitions type-check all terms whose types depend on the value being redefined.

Excluding the type-level debugging they mention, I think a lean style language-server is a better approach. Otherwise you are basically using an append-only ed to edit your environment rather than a vi.

extrabajs•1h ago
I don’t see the connection to dependent types. But anyway, is ‘redef’ part of your language? What type would you give it?
reuben364•27m ago
I just wrote redef to emphasize that I'm not shadowing the original definition.

    def a := 1
    def f x := a * x
    -- at this point f 1 evaluates to 1
    redef a := 2
    -- at this point f 1 evaluates to 2
But with dependent types, types can depend on prior values (in the previous example the type of x depends on the value t in the most direct way possible, as the type of x is t). If you redefine values, the subsequent definitions may not type-check anymore.
dang•4h ago
Any URL for this that we can open in a browser (as opposed to the dreaded "Content-Disposition: attachment")?
Jtsummers•4h ago
https://zenodo.org/records/15424968 - This at least takes you to a webpage where you can view the paper. If you select to download it, it still downloads of course instead of just opening in the browser.
dang•4h ago
Thanks! I've switched to that above, and put the downloadable link in the top text.
reikonomusha•4h ago
Related context: The 2025 European Lisp Symposium [1] was just wrapped a few hours ago in Zurich. There was content on:

- Static typing a la Haskell with Coalton in Common Lisp

- Dependent typing with Deputy in Clojure (this post)

- The Common Lisp compiler SBCL ported to the Nintendo Switch

- Common Lisp and AI/deep learning

- A special retrospective on Modula and Oberon

- Many lightning talks.

[1] https://european-lisp-symposium.org/2025/index.html

no_wizard•2h ago
I feel like Lisp would be an ideal language for AI development. Its exceedingly good for DSL development and pattern matching. Its already structurally like math notation as well, which I would think would lend itself to thinking how models would consume information and learn
rscho•1h ago
Well... believe it or not, some have thought of using lisp for AI for quite some time. ;-)
froh•1h ago
indeed.

Peter Norvig, 1992

Paradigms of AI Programming: Case Studies in Common Lisp

https://g.co/kgs/hck8wsE

https://en.m.wikipedia.org/wiki/Peter_Norvig

it's no coincidence Google is actively maintaining sbcl, either.

ayrtondesozzla•42m ago
https://quantumzeitgeist.com/lisp-and-the-dawn-of-artificial...

Lisp was the de facto language of artificial intelligence in the U.S. for many years. Apparently Prolog was popular in Europe (according to Norvig's PAIP)

fithisux•3h ago
Impressive.