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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•11mo 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!

Texas Tech cautions broadcasting research restrictions to prospective students

https://www.texastribune.org/2026/05/06/texas-tech-university-graduate-research-limit-warnings/
1•hn_acker•45s ago•0 comments

If December Was Too Late to Fix Unconstitutional Gerrymandering Why Is May Okay?

https://www.techdirt.com/2026/05/05/someone-ask-alito-if-december-was-too-late-to-fix-unconstitut...
1•hn_acker•4m ago•1 comments

The people preserving the scientific practice of bird banding

https://thenarwhal.ca/bird-banding-ontario/
2•bookofjoe•8m ago•0 comments

Android Bench – Model Evals

https://developer.android.com/bench
1•vthallam•11m ago•0 comments

Spent $130K+ AI token "cloned" Screen Studio: AGI for software feel so close

https://realmikechong.substack.com/p/spent-130k-cloned-screen-studio-and
2•imWildCat•11m ago•0 comments

Apple Could Be Working on 'Spatial iPhone' with Holographic Display

https://www.macrumors.com/2026/05/07/apple-working-on-spatial-iphone/
2•mgh2•13m ago•0 comments

The unlikely story of an email time machine

https://www.scientificamerican.com/article/forbes-email-time-capsule-communicating-future/
2•baud147258•14m ago•0 comments

Ramp in talks to hit $40B+ valuation, 6 months after reaching $32B

https://techcrunch.com/2026/05/07/ramp-in-talks-to-hit-40b-valuation-6-months-after-reaching-32b/
1•SilverElfin•15m ago•0 comments

Retrotechnology Media

http://www.typewritten.org/Media/
1•davikr•16m ago•0 comments

AI Agents are sending flowers to people

https://twitter.com/postalform/status/2052517791899570318
1•zavtra•17m ago•1 comments

The effect of personalized values screens on portfolio returns

https://stevenmackey.substack.com/p/how-much-return-are-you-giving-up-478
1•chibg10•28m ago•0 comments

Designing Analog Chips [pdf]

http://www.designinganalogchips.com/_count/designinganalogchips.pdf
3•whatisabcdefgh•31m ago•0 comments

Find out why Elon gave over his keys to Anthropic He is right can't win this

https://deepseekresearch.com/models.html
1•oroboroslabs•35m ago•1 comments

A new experiment deepens the mystery over gravitational constant, Big G

https://www.cnn.com/2026/05/07/science/gravitational-constant-measure-gravity-big-g
1•rramadass•39m ago•1 comments

Gambling ads on social media reach more than twice as many men as women: study

https://www.cam.ac.uk/research/news/gambling-ads-on-social-media-reach-more-than-twice-as-many-me...
2•hhs•41m ago•0 comments

Where the Curves Cross

https://whattotelltherobot.com/p/where-the-curves-cross
2•stefie10•41m ago•0 comments

AI Bots Auditioning for Wall Street Are Mostly Losing

https://www.fa-mag.com/news/ai-bots-auditioning-for-wall-street-trading-are-mostly-losing-86902.html
1•izyda•46m ago•1 comments

Researchers discover advanced language processing in the unconscious human brain

https://www.bcm.edu/news/researchers-discover-advanced-language-processing-in-the-unconscious-hum...
4•hhs•51m ago•0 comments

Show HN: Blamo A vibecoded app for vibecoding vibe games

https://www.blamo.ai/
1•semateos•52m ago•1 comments

Show HN: Notion-to-site – sync any Notion database to local Markdown/MDX/JSON

https://github.com/rashidazarang/notion-to-site
2•rashidae•53m ago•0 comments

ICE Plans to Develop Own Smart Glasses

https://www.404media.co/ice-plans-to-develop-own-smart-glasses-to-supplement-its-facial-recogniti...
7•cdrnsf•56m ago•1 comments

Maybe you shouldn't install new software for a bit

https://xeiaso.net/blog/2026/abstain-from-install/
24•psxuaw•56m ago•4 comments

The Mounting Toll of Multi-Year Funding on American Biomedical Research [pdf]

https://actfornih.org/wp-content/uploads/2026/05/A4N_Updated-MYF-One-Pager_May-2026_FINAL.pdf
2•petethomas•56m ago•0 comments

[dupe] Cloudflare is laying off 1,100 employees

https://www.businessinsider.com/cloudflare-announces-1100-layoffs-amid-ai-focus-shift-2026-5
13•cdrnsf•59m ago•3 comments

Show HN: Kill-The-Backlog, self-hosted background agents

https://github.com/jvaill/Kill-The-Backlog
3•jvaill•59m ago•0 comments

As Russia Expands Internet Blackouts, Kremlin Tells Citizens to Use the Radio

https://united24media.com/latest-news/as-russia-expands-internet-blackouts-kremlin-tells-citizens...
4•hkmaxpro•1h ago•0 comments

Nonprofit hospitals spend billions on consultants with no clear effect

https://www.uchicagomedicine.org/forefront/research-and-discoveries-articles/nonprofit-hospitals-...
4•hhs•1h ago•0 comments

Mirror Neuron

https://en.wikipedia.org/wiki/Mirror_neuron
2•kristianpaul•1h ago•0 comments

Agentic Artificial Intelligence in Finance

https://arxiv.org/abs/2604.21672
2•nhatcher•1h ago•0 comments

CSP2XSS: Vulnerability in Next.js App Router

https://aisafe.io/blog/csp2xss-nextjs-vulnerability
2•adragos_•1h ago•0 comments