frontpage.
newsnewestaskshowjobs

Open Source @Github

fp.

Open in hackernews

Show HN: Reaktiv – I built Excel-like reactive programming for Python

https://bui.app/when-frontend-reactivity-meets-backend-python-the-story-of-my-first-1-000-download-library/
2•buibuibui•1y ago
Hi HN! I created Reaktiv, a Python library bringing reactive programming to the backend world that recently hit 1,000+ monthly downloads.

I'm actively promoting it because I believe signal-based reactivity (a concept that spread rapidly in frontend development) has huge untapped potential in Python. My breakthrough came when I stopped describing it as "Angular signals for Python" and started calling it "Excel-like computation graphs" - suddenly Python developers understood the value.

The library automatically tracks dependencies between computations, only recalculating values when dependencies change. This eliminates manual dependency tracking, prevents synchronization bugs, and reduces cognitive load when managing complex state.

Interestingly, I've noticed some initial interest from data scientists, though I'm still exploring what specific problems it might solve for them. I also believe the Home Assistant/IoT communities could benefit greatly from this approach.

Would love your thoughts on bringing frontend patterns to backend development!

Top% of U.S. nonprofits account for 75% of revenue

https://data.charitysense.com/blog/the-4-trillion-blind-spot
1•mtweak•1m ago•0 comments

Tesla Weighs Sale of China Business to Pave Way for Potential SpaceX Merger

https://www.wsj.com/business/autos/tesla-weighs-sale-of-china-business-to-pave-way-for-potential-...
1•JumpCrisscross•4m ago•0 comments

Anthropic finds that its models also compromised external systems during testing

https://www.axios.com/2026/07/30/anthropic-mythos-security-testing
3•nevir•7m ago•0 comments

Anthropic's AI models hacked 3 organizations during testing

https://www.politico.com/news/2026/07/30/anthropic-ai-rogue-hacks-01018741
2•tejohnso•11m ago•0 comments

Show HN: Widen – Open-source Mac Postgres GUI with local or cloud text-to-SQL

https://widen.dev/
4•thedreammachine•13m ago•0 comments

Canada celebrates new bridge to US while fighting Trump tariffs

https://apnews.com/article/canada-detroit-new-bridge-4b22dc7fc282467a363a247fe590f334
2•gmays•14m ago•0 comments

'The Boss Wants This Money': Inside Trump's Unprecedented Fundraising Operation

https://www.wsj.com/politics/policy/trump-donations-company-fundraising-1e34a78f
3•petethomas•15m ago•0 comments

Showdown Elo: weighted Elo for baseball

https://showdown.tanji.systems/#almanac
1•merriman-xyz•17m ago•0 comments

OpenAI's Hack of Hugging Face

https://www.newyorker.com/news/the-lede/inside-openai-hack-of-hugging-face
2•bwoah•19m ago•1 comments

Show HN: Stash – native Mac Markdown notes

https://staunchapps.com/stash/
1•andrewjk•23m ago•0 comments

Uefa agrees to boycott FIFA competitions if World Cup sell-off plans proceed

https://www.theguardian.com/football/2026/jul/30/uefa-agrees-to-boycott-fifa-competitions-if-worl...
1•rguiscard•25m ago•0 comments

Iran struck Amazon data centers again amid widening war, satellites show

https://arstechnica.com/gadgets/2026/07/satellites-spot-new-war-damage-to-amazon-data-centers-and...
5•pseudolus•29m ago•0 comments

Strategic Oil Reserves Down to a Record Low Two-Week Supply

2•megamike•30m ago•0 comments

The Biggest Thing We've Lost Since the Early Internet [video]

https://www.youtube.com/watch?v=3CAcB-ORBOE
1•pierres7•31m ago•0 comments

Flock surveillance cameras can pose a crash risk for drivers, US experts say

https://www.theguardian.com/us-news/2026/jul/30/controversial-flock-ai-surveillance-camera-risk
2•pseudolus•31m ago•0 comments

Show HN: Great Spectations, the Spec Checker

https://greatspectations.org
1•RustyRussell•33m ago•0 comments

Anthropic Says Its A.I. Systems Broke into Computers at 3 Organizations

https://www.nytimes.com/2026/07/30/technology/anthropic-ai-hack.html
4•ajax33•36m ago•0 comments

'Lasting peace': Hamas, Trump announce 'complete disarmament'

https://www.theaustralian.com.au/world/hamas-agrees-complete-disarmament-announces-trump/news-sto...
1•asdefghyk•36m ago•4 comments

YC Startup Guaranteed Job Interviews for People Getting Company Logo Tattoo

https://www.wsj.com/lifestyle/careers/the-ai-startup-that-guaranteed-job-interviews-for-people-ge...
5•fortran77•45m ago•3 comments

Reimagine the World with Nano Banana in Google Earth

https://blog.google/products-and-platforms/products/earth/nano-banana-google-earth-image-generation/
3•soheilpro•49m ago•0 comments

Show HN: Real Estate Agent Email List – 1.1M+ US Realtor Contacts

https://www.usagentleads.com
1•qwikhost•49m ago•0 comments

How the HSA Became the Top%'s Wealth-Building Loophole

https://insurancedimes.com/2026/07/27/how-the-hsa-became-the-top-1-percents-ultimate-wealth-build...
2•crookedroad44•50m ago•2 comments

LinkedIn adds a 'seems like AI slop' button

https://www.theverge.com/ai-artificial-intelligence/973384/linkedin-seems-like-ai-slop-button
3•cwnyth•51m ago•0 comments

Refinement types for Rust

https://github.com/flux-rs/flux/
1•AsyncBanana•52m ago•0 comments

What did the Romans ever do for Christianity?

https://www.economist.com/culture/2026/07/23/what-did-the-romans-ever-do-for-christianity
2•andsoitis•57m ago•1 comments

Can LLMs have an "accent" like second language speakers?

1•hmokiguess•58m ago•0 comments

Agentic AI at Two Different Scales: Nanbeige4.2-3B and Laguna S2.1

https://kaitchup.substack.com/p/agentic-ai-at-two-different-scales
1•gmays•59m ago•0 comments

America's startup boom offers hope for the future of work

https://www.economist.com/leaders/2026/07/30/americas-startup-boom-offers-hope-for-the-future-of-...
3•andsoitis•59m ago•0 comments

MAME 0.289

https://www.mamedev.org/?p=565
5•chungy•1h ago•0 comments

Anthropic says Claude hacked three companies during tests

https://www.reuters.com/legal/litigation/anthropic-says-claude-ai-models-accessed-three-companies...
9•nerder92•1h ago•3 comments