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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•10mo 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!

Agentic Dev: AI-curated daily signal for AI devs (no hype)

https://agenticdev.blog/
1•beeswaxpat•41s ago•0 comments

Dear Boys, Looksmaxxing Is a Fool's Errand

https://www.wsj.com/lifestyle/relationships/looksmaxxing-looksminning-marriage-ceb931e3
1•impish9208•1m ago•1 comments

Perceived characteristics of illusory faces in symmetrical visual noise

https://royalsocietypublishing.org/rsos/article/13/3/250570/481097/Facing-your-expectations-perce...
1•bookofjoe•1m ago•0 comments

Show HN: Modo – Open-source AI IDE that plans before it codes (spec-driven dev)

https://github.com/mohshomis/modo
1•mohshomis•2m ago•0 comments

The Evolution of Program State

https://queue.acm.org/detail.cfm?id=3799737
1•swq115•2m ago•0 comments

Do Large Language Models (Really) Need Statistical Foundations? [pdf]

https://www.weijie-su.com/files/LLM_position.pdf
1•fzliu•2m ago•0 comments

Broadly stable atmospheric CO2 and CH4 levels over the past 3M years

https://www.nature.com/articles/s41586-025-10032-y
1•walterbell•6m ago•0 comments

Revisited: The Cylob Cryptogram

https://scienceblogs.de/klausis-krypto-kolumne/2020/08/18/revisited-the-cylob-cryptogram/
1•pavel_lishin•9m ago•0 comments

The Endless Goodbye

https://www.theatlantic.com/family/2026/04/death-dementia/686552/
1•petethomas•13m ago•0 comments

Frona – self-hosted personal AI assistant

https://github.com/fronalabs/frona
1•syncerx•14m ago•0 comments

Zeaota – AI Native Product Intelligence Tool

https://zeaota.ai
1•Shriansh_Pandey•14m ago•0 comments

'Cognitive Surrender' Is a New and Useful Term for How AI Melts Brains

https://gizmodo.com/cognitive-surrender-is-a-new-and-useful-term-for-how-ai-melts-brains-2000742595
3•mikhael•15m ago•0 comments

Data Security Risks of Using Foreign-Developed Mobile Apps in the US

https://www.ic3.gov/PSA/2026/PSA260331
3•gnabgib•16m ago•0 comments

How should you change your life decisions if we are being watched by aliens?

https://marginalrevolution.com/marginalrevolution/2026/04/how-should-you-change-your-life-decisio...
2•paulpauper•19m ago•0 comments

Show HN: Vim Navigator – MCP server that lets AI agents drive your Neovim

https://github.com/kcaldas/vim-navigator
1•kcaldas•19m ago•0 comments

Does AI moderate political extremes? I'm not convinced

https://philosophybear.substack.com/p/does-ai-moderate-political-extremes
2•paulpauper•20m ago•0 comments

Latest Kindle updates cause gigabytes of data upload during sleep, battery drain

https://old.reddit.com/r/kindle/comments/1sbmiee/kindle_uploading_gigabytes_while_it_sleeps/
1•seam_carver•21m ago•0 comments

Show HN: Mdarena – Benchmark your Claude.md against your own PRs

https://github.com/HudsonGri/mdarena
2•hudsongr•25m ago•1 comments

hid-omg-detect: Linux Driver in Development to Detect Malicious HID Devices

https://www.phoronix.com/news/hid-omg-detect-Malicious-HID
2•josephcsible•25m ago•0 comments

OpenAI's fall from grace as investors race to Anthropic

https://www.latimes.com/business/story/2026-04-01/openais-shocking-fall-from-grace-as-investors-r...
2•1vuio0pswjnm7•28m ago•0 comments

OppoScan – Agentic Market Opportunity Scanner for Startups

https://opposcan.com/
1•supramono•29m ago•1 comments

FBI warns iPhone, Android users: apps, personal data collected, stored overseas

https://nypost.com/2026/04/04/world-news/fbi-warns-some-foreign-apps-could-collect-americans-data...
2•1vuio0pswjnm7•30m ago•0 comments

Reasons Mastodon won't survive (2017)

https://mashable.com/article/mastodon-wont-survive
5•doener•34m ago•3 comments

Tesla's stock suffers steepest drop of 2026 on disappointing deliveries report

https://www.cnbc.com/2026/04/02/tesla-tsla-q1-2026-vehicle-delivery-production.html
4•1vuio0pswjnm7•36m ago•0 comments

Eric Voegelin – From Enlightenment to Revolution

https://en.wikiquote.org/wiki/Eric_Voegelin
1•programmexxx•42m ago•0 comments

AI videos fuel rhetoric as Orbán bids for four more years in Hungary

https://www.bbc.com/news/articles/c5yj97yd6v5o
2•breve•43m ago•0 comments

Repowise: Codebase intelligence for AI-assisted engineering teams

https://github.com/repowise-dev/repowise
2•i0exception•45m ago•0 comments

Thailand, pollution, AI, my books, and ADHD

https://indignified.substack.com/p/hasan-i-sabah-prologue
1•ZguideZ•56m ago•0 comments

Italian TV Copyright-Strikes Nvidia over Nvidia's Own DLSS 5 Footage

https://twitter.com/NikTek/status/2040898312262324362
13•alecco•56m ago•4 comments

What's the digital equivalent of fish dropping shrimp in front a mirror?

https://github.com/Bitterbot-AI/bitterbot-desktop
1•VtotheMtotheG•58m ago•0 comments