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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!

When did we decide lines of code was a measure of productivity?

https://medium.com/@mooseyanon/when-did-we-decide-lines-of-code-was-a-measure-of-productivity-e14...
1•arm93•1m ago•0 comments

Productivity Effects Across Generations of AI Coding Tools [pdf]

https://www.nber.org/system/files/working_papers/w35275/w35275.pdf
1•robin_reala•2m ago•0 comments

A Case for Simulation-Driven Resilience in Agentic Data Systems

http://muratbuffalo.blogspot.com/2026/06/a-case-for-simulation-driven-resilience.html
1•eigenBasis•5m ago•0 comments

Show HN: AI agents shouldn't just be for developers

1•cheikhshift•6m ago•0 comments

WOS: a Rust ARM64 kernel from scratch with MMU and GICv2 working

https://github.com/jietra/wos
1•ulrichxtan•7m ago•0 comments

Chinese court cases reveal most trafficked rhino horns come from Southern Africa

https://news.mongabay.com/2026/04/chinese-court-cases-reveal-most-trafficked-rhino-horns-come-fro...
1•PaulHoule•7m ago•0 comments

Mold-Desktop

https://codeberg.org/mmontone/mold-desktop
1•birdculture•8m ago•0 comments

With Copilot pricing exploding, how to not break the bank with AI coding?

1•rietie•8m ago•0 comments

Manifold Exploration

https://paul-antoineletolguenec.github.io/manifold-exploration/
1•AdilZtn•9m ago•0 comments

Speedy Games

https://speedygames.com
1•PostTrack•10m ago•0 comments

China expands its spy networks across the European Union and beyond

https://english.elpais.com/international/2026-06-07/china-expands-its-spy-networks-across-the-eur...
1•robtherobber•10m ago•0 comments

Qualcomm Gets the Lenovo Yoga Slim 7x Snapdragon X2 Working on Linux

https://www.phoronix.com/news/Lenovo-Yoga-Slim-7x-Gen11-Linux
1•cromka•12m ago•0 comments

Reality-mimicking AI fuels spike in scams, Visa cyberthreat finds

https://www.nbcboston.com/video/on-air/as-seen-on/reality-mimicking-ai-fuels-spike-in-scams-visa-...
1•1vuio0pswjnm7•12m ago•1 comments

Show HN: OrchAPI – AI tools shaped by the use of the useless

https://orchapi.com/
1•garrett_xu•14m ago•0 comments

Encyclopedia of World Problems and Human Potential

https://encyclopedia.uia.org/
1•o4c•14m ago•0 comments

Robots could soon be delivering your pizza

https://economist.com/business/2026/06/07/robots-could-soon-be-delivering-your-pizza
1•andsoitis•14m ago•0 comments

Attempting to regulate an industry when they control the communication pathways

3•rando77•15m ago•0 comments

Has Microsoft Lost Its Mojo (Again)?

https://www.wired.com/story/has-microsoft-lost-its-mojo-again/
3•1vuio0pswjnm7•18m ago•0 comments

Meta loses High Court challenge to possible €430M fine

https://www.irishtimes.com/business/2026/05/21/meta-loses-challenge-to-possible-430m-fine-over-pe...
3•1vuio0pswjnm7•18m ago•0 comments

Charlie Bites, Badgers Dance and a Lettuce Endures in This Archive of Web Memes

https://www.nytimes.com/2026/06/08/technology/uk-video-memes-archive-tape.html
1•_tk_•20m ago•0 comments

SlimTide Capsules: Don't Buy Until You Read This Real Truth

https://finance.yahoo.com/sectors/healthcare/articles/slimtide-capsules-updated-warning-2026-1921...
1•wasufady•24m ago•0 comments

Making Claude a chemist (NMR spectroscopy)

https://www.anthropic.com/research/making-claude-a-chemist
2•logifail•24m ago•0 comments

Mona's Bug Bash

https://bug-bash.github.com
1•carlos-menezes•25m ago•0 comments

Uber Opens London Waitlist for Wayve Robotaxis Ahead of Launch

https://www.bloomberg.com/news/articles/2026-06-08/uber-opens-london-waitlist-for-wayve-robotaxis...
1•helsinkiandrew•26m ago•0 comments

Founders Fund Mafia game (feat Sam Altman, Palmer Luckey, Bryan Johnson) [video]

https://www.youtube.com/watch?v=EDCwQe7P8T0
1•liboshen•26m ago•0 comments

There are reliable ways to tell if someone is lying to you

https://www.theguardian.com/commentisfree/2026/jun/08/someone-lying-courts-jurors-truth-body-lang...
1•n1b0m•27m ago•0 comments

Nex Playground: the family game-night gadget that revives the spirit of the Wii

https://www.theguardian.com/games/2026/jun/01/nex-playground-it-outsells-xbox-and-aims-to-end-lon...
1•andsoitis•28m ago•0 comments

How to Win in Life

https://twitter.com/i/status/2057192335398912116
1•garvittsingla•30m ago•1 comments

Panic First, Evidence Later

https://kidsplaytech.com/wp-content/uploads/2026/06/Panic_First_Evidence_Later.html
1•haakonhr•32m ago•0 comments

Why this year's World Cup ball may not fly as far

https://www.technologyreview.com/2026/06/08/1138470/why-this-years-world-cup-ball-may-not-fly-as-...
2•joozio•34m ago•0 comments