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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•7mo 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!

What's going on here, with this human?

https://grahamduncan.blog/whats-going-on-here/
1•staticshock•1m ago•0 comments

It's 2025. Why Can't Americans Use a Simple Roundabout?

https://www.thedrive.com/news/its-2025-why-cant-americans-use-a-simple-roundabout
1•PaulHoule•3m ago•0 comments

The View from Inside the AI Bubble

https://www.theatlantic.com/technology/2025/12/neurips-ai-bubble-agi/685250/
1•harambae•4m ago•0 comments

How LLMs Think Like Clinicians

https://dochobbs.github.io/ai101/llm-thinking.html
1•vampiresdoexist•6m ago•0 comments

How to Get Reddit Karma Fast (The Safe Way, 2025 Guide)

https://www.wappkit.com/blog/how-to-get-karma-fast-2025
1•asphero•11m ago•1 comments

CtrlAssist: Controller Assist for Gaming on Linux

https://github.com/ruffsl/CtrlAssist
2•ruffsl•14m ago•1 comments

Show HN: Bets on Post-GPU Compute

https://www.vishalv.com/notes/bets-on-post-GPU-compute
1•visvig•17m ago•0 comments

Show HN: I implemented generics in my programming language

https://axe-docs.pages.dev/features/generics/
2•death_eternal•22m ago•0 comments

'I've been allergic to AI for a long time': an interview with Peter Thiel

https://www.spectator.co.uk/article/ive-been-allergic-to-ai-for-a-long-time-an-interview-with-pet...
1•kerim-ca•27m ago•1 comments

Hell is other people's markup

https://www.htmhell.dev/adventcalendar/2025/13/
1•emschwartz•28m ago•1 comments

Show HN: web app to match with people nearby on 7 dimensions of needs

https://deep-union-web.vercel.app/
1•arthurstarlake•30m ago•0 comments

Pilot narrowly avoids 'midair collision' with US Air Force plane near Venezuela

https://www.theguardian.com/us-news/2025/dec/14/jetblue-pilot-avoids-midair-collision-air-force-v...
6•prmph•31m ago•2 comments

Feature-First Development

https://jackson.dev/post/feature-first-development/
1•Arcuru•35m ago•0 comments

Role reversal: Meta adopts Qwen as Chinese AI becomes industry foundation

https://www.scmp.com/tech/big-tech/article/3336243/role-reversal-meta-adopts-qwen-chinese-ai-beco...
2•djhu9•40m ago•0 comments

PSRT v2.1 – A Bounded Architecture for Intelligence and Meaning

https://zenodo.org/records/17932629
1•nettalk83•41m ago•1 comments

Redfern Station Christmas artwork to be removed after complaints of 'AI slop'

https://www.smh.com.au/national/nsw/redfern-station-s-ai-generated-christmas-artwork-to-be-remove...
1•healsdata•43m ago•0 comments

The Architects of AI Are TIME's 2025 Person of the Year

https://time.com/7339621/person-of-the-year-2025-ai-architects-choice/
1•pseudolus•43m ago•0 comments

The Copilot Usage Report 2025

https://microsoft.ai/news/its-about-time-the-copilot-usage-report-2025/
2•skeptic_ai•44m ago•0 comments

The Big City; Save the Flophouses

https://www.nytimes.com/1996/01/14/magazine/the-big-city-save-the-flophouses.html
1•ChadNauseam•45m ago•0 comments

Framework-agnostic Select and Toast components built with Web Components

1•dgseo•45m ago•0 comments

Show HN: A model that estimates when AI can do your job

https://dontloseyourjob.com/
2•claywren•47m ago•1 comments

Your Mac has a fast, offline LLM

https://zdgeier.com/macoschat.html
1•zdgeier•51m ago•2 comments

Show HN: Silly website to earn badges for touching grass

https://www.touched-grass.com
2•buildItN0w_•53m ago•0 comments

Dungeon-mode: a dungeon crawler game for Emacs

https://github.com/dungeon-mode/game
1•dustfinger•55m ago•0 comments

Denmark plans to restrict social media use for young people

https://apnews.com/article/denmark-social-media-ban-australia-1e96a3df3276cc2033a6f04effb89f51
6•pseudolus•56m ago•0 comments

ASL interpreters 'intrude' on Trump's right to control image, U.S. DOJ says

https://globalnews.ca/news/11576240/trump-white-house-sign-language-lawsuit-image/
1•rolph•57m ago•0 comments

A healthier sugar substitute: Engineered bacteria yield a sweet solution

https://phys.org/news/2025-12-healthier-sugar-substitute-bacteria-yield.html
1•pseudolus•58m ago•0 comments

The End of Concept Nativism

https://arxiv.org/abs/2505.18277
1•usingla•1h ago•0 comments

Linuxiac.com restricts access based on countries and regions

https://linuxiac.com/when-linus-met-linus-insights-from-torvalds-conversation-with-ltt/
1•Kk_vv•1h ago•0 comments

I'm tired of copying auth tokens as vibe coder

https://github.com/lofibrainwav/SixXon
1•brnestrm•1h ago•0 comments