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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!

Anatomy of a Learning Stall – How LLM Hallucinations Become Human Hallucinations

https://tagide.com/blog/llm/the-anatomy-of-a-learning-stall/
1•potbelly•25s ago•0 comments

I Built a Dashboard for Every 2026 World Cup Squad

https://emot.substack.com/p/what-i-learned-analyzing-1248-world
1•emot•2m ago•0 comments

From Jupyter Notebook to production: How to ship AI systems that work

https://thenewstack.io/notebook-to-production-ai/
1•Brajeshwar•4m ago•0 comments

AI and the Desire to Destroy the Rival

https://minervaatdusk.substack.com/p/ai-and-the-desire-to-destroy-the
1•minervaatdusk•5m ago•0 comments

Thinking and Explaining Mathematics (2010)

https://mathoverflow.net/questions/38639/thinking-and-explaining
2•vismit2000•9m ago•0 comments

Marketing Clerks

https://seths.blog/2026/06/marketing-clerks/
1•herbertl•12m ago•0 comments

Scott Pelley on the Bari Weiss Era and His Last Days at '60 Minutes'

https://www.nytimes.com/2026/06/07/magazine/scott-pelley-interview.html
2•ohjeez•13m ago•0 comments

Show HN: A parser for the ISO 10303 EXPRESS language for its 40th anniversary

https://github.com/rochus-keller/EXPRESS
2•Rochus•16m ago•0 comments

Shwo HN: Roadbar – Gantt-style Jira deadline tracker

https://roadbar.net
2•roadbar•20m ago•0 comments

Gdf: Git Diff Merge

https://github.com/mbarlow/gdf
2•moo-jason•20m ago•1 comments

We moved our growth analytics back into Tinybird

https://www.tinybird.co/blog/why-we-moved-our-growth-analytics-back-into-tinybird
2•adastral•20m ago•0 comments

Show HN: Achu.app – turns raw captures into polished visual, with AI Issue Agent

https://www.achu.app/
2•qainsights•21m ago•0 comments

Trump doesn't rule out giving Jan. 6 rioters who attacked police payouts

https://www.nbcnews.com/politics/donald-trump/trump-jan-6-rioters-attacked-police-payouts-anti-we...
4•tcp_handshaker•25m ago•0 comments

Git: The Fabric of Software

https://ocodista.com/en/posts/git-the-fabric-of-software/
5•codista•25m ago•0 comments

Vitamin D3 During Pregnancy and Cognitive Performance at 10 Years

https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2849122
5•supermatou•26m ago•0 comments

Our first customers were the exception

https://www.apurvamehta.com/blog/our-first-customers-were-the-exception
2•apurvamehta•26m ago•0 comments

Show HN: YouTube Roulette – one button, a random video

https://channelsurfer.tv/tools/random-youtube/
2•kilroy123•27m ago•0 comments

AI Native DevCon, London, June 2026 [YouTube Playlist]

https://www.youtube.com/playlist?list=PLISstAySqk7KtlYPFps1ZnK9xNIMSVkDD
2•doctaj•27m ago•0 comments

Giving AI SSH Access

https://yeri.be/giving-ai-ssh-access/
3•yakkomajuri•29m ago•0 comments

Is This Art?

https://www.totalnoise.ai/blog/is-this-art/
4•hasmatt•29m ago•1 comments

Kids Still Ride Horses to This One-Room Wyoming Schoolhouse

https://cowboystatedaily.com/2026/06/06/kids-still-ride-horses-to-this-one-room-wyoming-schoolhou...
2•Bender•30m ago•0 comments

Two Years of Enhanced Weathering in Tropical Cacao Agri-Ecosystems

https://meetingorganizer.copernicus.org/EGU26/EGU26-19336.html
2•PaulHoule•31m ago•0 comments

Brit maritime agency heralds fresh global rules for crewless cargo ships

https://www.theregister.com/offbeat/2026/06/07/brit-maritime-agency-heralds-fresh-global-rules-fo...
3•Bender•32m ago•0 comments

School shooting survivor sues AI gun detection firm failed to spot weapon

https://arstechnica.com/tech-policy/2026/06/school-shooting-survivor-sues-ai-gun-detection-firm-a...
2•Bender•33m ago•0 comments

Electric TaxiBot starts operating at Schiphol

https://www.schiphol.nl/en/sustainability/blog/electric-taxibot-starts-operating-at-schiphol/
3•geox•36m ago•0 comments

Petals Around the Rose

https://www.oranlooney.com/demos/rose-petals/
3•olooney•38m ago•0 comments

The language debate is back

https://antejavor.github.io/blog/2026/infra-static-languages/
2•taubek•38m ago•0 comments

A simple (and free) way to delete all your discord messages in a server or DM

https://github.com/Bsodoge/DiscordMessagePurger
2•bsodoge•46m ago•0 comments

The OnlyFans Economy of American AI

https://leoveanu.com/2026-06-06-qwen3.7max/
58•futurisold•47m ago•39 comments

TvOS 27 is Apple's chance to fix Apple TV gaming

https://9to5mac.com/2026/06/06/tvos-27-could-be-apples-gaming-renaissance-for-apple-tv/
2•01-_-•48m ago•0 comments