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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•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!

Git include: a Git-subrepo-compatible plugin for nested and vendored repos

https://github.com/Flova/git-include
1•flova•2m ago•1 comments

Will AI soon lead to double-digit growth?

https://aleximas.substack.com/p/will-ai-soon-lead-to-double-digit
1•gwintrob•3m ago•0 comments

Crypto Policy Faces New Conflict-of-Interest Questions

https://discord.com/channels/1519570089488289956/1522069205795606650/1560120881668161636
1•joeymabia1•3m ago•0 comments

Call Center Jobs Are Declining, but 14,000 Calls Show Humans Still Outperform AI

https://boldagents.co/blog/call-center-jobs-declining-14000-calls-humans-outperform-ai
9•thomas_unise•3m ago•1 comments

Next-Gen Military Satellite Constellations

https://surtr.substack.com/p/next-gen-military-satellite-constellations
1•paulpauper•4m ago•0 comments

Language models revise the documents that govern them

https://www.lesswrong.com/posts/c9woewdY9ddsPqf3J/the-continual-constitutional-convention-how-lan...
1•paulpauper•4m ago•0 comments

Always log your configuration when booting

https://jensrantil.github.io/posts/log-config-on-boot/
1•JensRantil•4m ago•0 comments

Personal Superintelligence

https://www.meta.com/superintelligence/
1•lopespm•7m ago•0 comments

Hackers exploit Collabora RCE flaw to backdoor Nextcloud servers

https://www.bleepingcomputer.com/news/security/hackers-exploit-collabora-rce-flaw-to-backdoor-nex...
1•wondersky•8m ago•0 comments

Visual Nerve, Free workflow visualization and simulation with MCP

https://www.visualnerve.com/
1•jclsn•9m ago•0 comments

AI usage causes broken windows (2005)

https://blog.codinghorror.com/the-broken-window-theory/
1•matt3210•9m ago•1 comments

Flock CEO defends surveillance technology amid national backlash

https://techcrunch.com/2026/10/14/flock-ceo-defends-surveillance-technology-amid-national-backlas...
2•nsdfg•10m ago•0 comments

Until – A workflow where developers decide what to build and AI does the coding

https://until.dev/
2•untldev•13m ago•0 comments

Shared Spaces for Your Agents

https://cua.ai/
2•dvrp•15m ago•0 comments

$50k First Letters Prize Awarded for PHerc 343

https://scrollprize.substack.com/p/50k-first-letters-prize-awarded-for
1•dcminter•20m ago•0 comments

Show HN: Guess the LLM – read an answer and guess which model wrote it

https://guessthellm.com/
2•aravindnatch•21m ago•0 comments

Bari Weiss Needs a New Idea

https://rosselliotbarkan.com/p/bari-weiss-needs-a-new-idea
1•slowin•22m ago•0 comments

Oral argument transcript, Salazar vs. Paramount Global, No. 25-459 [pdf]

https://www.supremecourt.gov/oral_arguments/argument_transcripts/2026/25-459_i425.pdf
1•qingcharles•23m ago•0 comments

How Climate Change Is Causing 'The Gentrification of Seafood'

https://www.nytimes.com/2026/10/13/dining/seafood-prices-shellfish-climate-change.html
1•littlexsparkee•23m ago•0 comments

How to Find a Power Outlet in Japan

https://donnykimball.com/japan-power-outlet-70accd4be846
4•bookofjoe•23m ago•2 comments

LLMs are not AGM (though some have internal monologue)

https://scottlocklin.wordpress.com/2026/10/15/llms-are-not-agm-though-some-have-internal-monologue/
1•d_silin•24m ago•0 comments

Ask HN: How did Call of Duty fix "update requires restart"?

1•zachrip•25m ago•0 comments

Show HN: Byakugan Scan – fast macOS OCR by keeping screen capture in memory

https://github.com/halcyon-past/byakugan-scan
1•halcyon-past•25m ago•1 comments

Verifiers First, Rubrics Second

https://rlafuente.com/posts/2026-10-11-agent-evals-4-verifiers-first-rubrics-second.html
1•andes314•27m ago•0 comments

HoverEnhance is a free Mac app that surfaces useful stuff on-hover

https://hoverenhance.com/
1•jesse_dot_id•29m ago•1 comments

Show HN: Rebuilt our directory of 241 AI tools for hardware engineering

https://productflo.io/ai-tools
1•Sergekad0•30m ago•0 comments

Bend Oregon elementary school active shooter killed; Multiple victims reported

https://katu.com/news/local/bend-police-responding-to-reported-active-shooter-situation-at-silver...
2•panny•31m ago•0 comments

AI Building vs. AI Buying: The Transatlantic Split

https://www.apollo.com/wealth/insights-news/insights/daily-spark/ai-building-vs-ai-buying-the-tra...
1•akyuu•31m ago•0 comments

What happens when you message a Grok Bot

https://www.peterp.me/articles/what-actually-happens-when-you-message-grok-bot/
1•thegreatpeter•32m ago•0 comments

Show HN: Asked LLM to show the most stereotypical man/woman for each country

https://anvaka.github.io/imaginary-faces/#
2•anvaka•32m ago•2 comments