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Codex starts encrypting prompts, uses ciphertext for inference instead

https://github.com/openai/codex/issues/28058
19•embedding-shape•7m ago•1 comments

Japan develops a method to recover up to 90% of lithium from used EV batteries

https://tech.supercarblondie.com/japan-recovers-up-to-90-of-lithium-from-used-ev-batteries/
542•donohoe•9h ago•140 comments

Alternative(s) to run CUDA on non-Nvidia hardware

https://www.hpcwire.com/2026/07/09/spectral-compute-aims-to-set-cuda-free-will-it-succeed/
63•alok-g•3h ago•32 comments

The Future Worth Building Is Human – Thinking Machines Lab

https://thinkingmachines.ai/blog/the-future-worth-building-is-human/
5•bilsbie•23m ago•0 comments

The git history command

https://lalitm.com/post/git-history/
333•turbocon•10h ago•195 comments

The great digital fatigue: How digital burnout is changing social media use

https://blog.incogni.com/digital-fatigue-and-burnout/
6•derbOac•29m ago•0 comments

Australian energy retailers must provide three hours of free daytime electricity

https://lenergy.com.au/free-daytime-electricity-is-coming-heres-how-it-actually-works/
126•i2oc•6h ago•197 comments

Show HN: Beautiful QR Codes

https://scanwayy.com
7•janpmz•6m ago•0 comments

Your 'App' Could Have Been a Webpage (so I fixed it for you)

https://danq.me/2026/07/09/your-app-could-have-been-a-webpage/
14•MrVandemar•3d ago•3 comments

Notable Knot Index (2016)

https://knots.neocities.org/knotindex
20•surprisetalk•4d ago•3 comments

Indian scientists produce most detailed 3D atlas of the human brainstem

https://www.bbc.com/news/articles/cg53l737v1qo
71•BaudouinVH•4h ago•4 comments

Show HN: Rejourney – Open-source revenue leak prediction for web and mobile apps

https://github.com/rejourneyco/rejourney
3•mrr7337•22m ago•0 comments

YouTrackDB is a general-use object-oriented graph database

https://github.com/JetBrains/youtrackdb
136•gjvc•7h ago•42 comments

Actegories

https://bartoszmilewski.com/2026/06/30/actegories/
3•ibobev•23m ago•0 comments

Building and shipping Mac and iOS apps without opening Xcode

https://scottwillsey.com/building-and-shipping-mac-and-ios-apps-without-ever-opening-xcode/
492•speckx•17h ago•210 comments

Fundamentals of Wireless Communication (2005)

https://web.stanford.edu/~dntse/wireless_book.html
143•teleforce•9h ago•6 comments

Just Let Me Write Digits

https://gendx.dev/blog/2026/07/13/input-digits.html
51•brandon_bot•5h ago•15 comments

How to build a circular LCD clock

https://blinry.org/lcd-clock/
87•birdculture•2d ago•35 comments

The Economics of Recursive Self-Improvement [pdf]

https://elasticity.institute/rsi-paper.pdf
106•apsec112•9h ago•43 comments

An Englishwoman who sketched India before photography took hold

https://www.bbc.com/news/articles/cm2drrv6q54o
168•1659447091•12h ago•52 comments

Zero Knowledge Tolstoyan Art

https://max-amb.github.io/blog/zero_knowledge_tolstoyan_art/
26•max-amb•2d ago•9 comments

Satellite Tracker – Live Map of Starlink and 30k Satellites

https://satellitemap.space/
98•rolph•9h ago•52 comments

Is x86 ready to ACE it?

https://chipsandcheese.com/p/is-x86-ready-to-ace-it
85•mfiguiere•9h ago•15 comments

MorphoHDL: A minimalistic language for growing circuits

https://paradigms-of-intelligence.github.io/morpho/
77•jacktang•10h ago•8 comments

SalesPatriot (YC W25) Is Hiring Full Stack Engineers (SF)

https://jobs.ashbyhq.com/SalesPatriot/df223727-5781-433e-bc75-2aa5bf8dc8d7
1•maciejSz•14h ago

World-First 'Super Alloy' Could Transform the Way Metals Are Made

https://www.sciencealert.com/world-first-super-alloy-could-transform-the-way-metals-are-made
72•tejohnso•4d ago•44 comments

The infinite scroll may become endangered if controversial Calif. law passes

https://www.sfgate.com/politics/article/meta-social-media-teenagers-22337724.php
181•Stratoscope•16h ago•303 comments

Writing a bindless GPU abstraction layer

https://www.kevin-gibson.com/blog/writing-a-bindless-gpu-abstraction-layer/
60•surprisetalk•4d ago•7 comments

Nokia’s years of mobile-phone supremacy ended in an afternoon

https://spectrum.ieee.org/nokia-phones-history
134•jruohonen•21h ago•101 comments

Two Case Studies of NaN

https://sebsite.pw/w/20260709-nan.html
22•ryantsuji•4d ago•8 comments
Open in hackernews

Two Case Studies of NaN

https://sebsite.pw/w/20260709-nan.html
8•theanonymousone•3h ago

Comments

jjgreen•2h ago

      hypot(Inf, NaN) == Inf
made me laugh out loud ...
Someone•1h ago
That’s straight from the standard. https://en.cppreference.com/c/numeric/math/hypot: “if one of the arguments is ±∞, hypot returns +∞ even if the other argument is NaN”

⇒ I expect this choice got careful consideration. (Edit: in the end, the reasoning still could have been “unfortunately, existing implementations do it this way; we’ll begrudgingly follow them”)

jjgreen•1h ago
Indeed, and makes you realise that NaN is not "not a number" but rather "not a particular number", if one cathetus is infinite then the hypotenuse must be infinite whatever the other cathetus is ...
ColinWright•1h ago
See also: https://news.ycombinator.com/item?id=48855045
aragilar•1h ago
You don't need NaN (or Inf) to have unexpected behaviour with floats and naive loops in lua, using 1e52 is enough. Conflating floating point and integers (independent of encoding) is always a bit of a trap.