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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!

Show HN : I built Caloi AI – an AI-powered calorie tracker

https://play.google.com/store/apps/details?id=com.caloi.app&hl=en_US
1•sonuhs123456•5m ago•0 comments

Wireless dictation device with gestures to control your Claude sessions, etc. [video]

https://www.youtube.com/watch?v=BsSTbleas8E
1•oskob•5m ago•0 comments

Scientists discover a secret glow in toxic fire salamanders

https://www.sciencedaily.com/releases/2026/10/261027063707.htm
1•bryanrasmussen•5m ago•0 comments

Running quantum circuits inside llama.cpp

https://github.com/dakk/qullama
1•dakkk•7m ago•0 comments

The Engineer's Laptop Is the New Front Door

https://www.ossprey.com/blog/why-attackers-target-engineers
1•hiddenvulkcan•8m ago•0 comments

Told to reboot a server, it destroyed systemd, destroyed containers, ran random

https://github.com/openai/codex/issues/59060
2•jstanley•9m ago•0 comments

FlowNerves Nerve Support Reviews 2026

https://bookshop.org/lists/flownerves-nerve-support-reviews-2026
1•bayswajo•11m ago•0 comments

Intel 14A moves closer to production as PDK 0.9 becomes available

https://www.tomshardware.com/tech-industry/semiconductors/intel-14a-moves-closer-to-production-as...
1•rbanffy•12m ago•0 comments

Pavel

1•manicatide•13m ago•0 comments

Show HN: Tab Trail, a bookmarklet that draws a page's tab order and finds gaps

https://matjazkorosec.com/tools/tab-trail
1•matjazkorosec•13m ago•0 comments

We review every PR with a 27B model on self-hosted infra

https://varoa.net/2026/11/03/we-review-every-pr-with-a-27b-model-on-self-hosted-infra.html
1•srvaroa•13m ago•0 comments

IconMCP – autonomous icon library built by agents

https://iconmcp.com/
1•agilek•14m ago•0 comments

A Primer on Ethics in Mathematics

https://arxiv.org/abs/2610.08209
1•Qision•14m ago•0 comments

Show HN: Alternative to Nvidia Auto-Ontology

https://github.com/GetCassis/ontology-skills
1•matthieu_bl•15m ago•0 comments

I love my T3 Code development workflow

https://unbeholden.dev/blog/t3-code-in-every-dev-container
1•unbeholden•15m ago•0 comments

I tried to break weight programming

https://flecart.github.io/posts/2026-11-03-i-tried-to-break-weight-programming/
1•flecart•17m ago•0 comments

Study Reveals Concerning Trends in Global Mental Health

https://www.publichealth.columbia.edu/news/study-reveals-concerning-trends-global-mental-health
1•thunfischtoast•17m ago•0 comments

Front End JavaScript Interview Questions

https://borischerny.com/javascript/%22functional/programming%22/2017/06/09/Frontend-Interview-Que...
1•ankitg12•23m ago•0 comments

AI in Mathematical Research: Heidelberg Laureate Forum

https://www.youtube.com/watch?v=H7_d_sgui6o
1•niemandhier•25m ago•1 comments

Geoffrey Hinton: it might turn out we were better off without AI

https://www.theguardian.com/uk-news/2026/nov/03/ai-godfather-geoffrey-hinton-better-off-without-ai
8•alkyon•29m ago•2 comments

Giving the PS Vita camera new life with GPT-6 Astra

https://i8o.eu/journal/giving-new-life-to-ps-vita/
1•xerosic•29m ago•0 comments

Seitan: Syscall Expressive Interpreter, Transformer and Notifier

https://seitan.rocks/seitan/about/
1•exceptione•29m ago•1 comments

Bosch to create semiconductor division from January 2028

https://www.reuters.com/world/asia-pacific/bosch-spin-off-semiconductor-division-january-2028-202...
1•giuliomagnifico•30m ago•1 comments

A 3D solar eclipse simulator built with Unreal Engine and Cesium

https://github.com/Dragos112358/Eclipse-Simulator-3D
1•dragosboncan•31m ago•1 comments

iPad mini 8: OLED panel, thinner design, one of my favorite tablets

https://www.tomsguide.com/computing/ipads/apple-ipad-mini-8-review
1•tosh•34m ago•0 comments

Show HN: TubeHaus – Open-source YouTube app for Android, desktop and TV

https://github.com/biolend83/tubehaus
1•invidiouslove12•35m ago•0 comments

Siri AI is now open to all developers

https://developer.apple.com/news/?id=gdk2umrf
2•tosh•35m ago•0 comments

PFAS contamination in the U.S. (March 5, 2026)

https://www.ewg.org/interactive-maps/pfas_contamination/map/
2•Bluestein•38m ago•0 comments

Pulling the right strings for RCE on a Puppet

https://neodyme.io/en/blog/puppet_rce/
1•joshcsimmons•39m ago•0 comments

Hacker News just got a new glow

https://twitter.com/findingnische/status/2117921951675204049
3•NeumannGod•41m ago•5 comments