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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•6mo 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: Outfit Swap Studio – AI clothes changer for your own photos

https://outfitswapstudio.com/
1•xiaoyuan23•30s ago•0 comments

Paramount Makes Hostile Bid for Warner Bros. Discovery

https://www.nytimes.com/2025/12/08/business/paramount-warner-bros-discovery-netflix.html
1•pseudolus•50s ago•1 comments

Show HN: I created a website to scan invoices or bank statements with OCR and AI

https://quickdataconverter.com
1•sithu_khant•1m ago•0 comments

Time might not exist – and we're starting to understand why

https://www.sciencefocus.com/science/the-closer-we-look-at-time-the-stranger-it-gets
2•amichail•2m ago•0 comments

The Reverse Socratic Method in the AI Age

https://smoas.bearblog.dev/reverse-socratic/
1•_nalply•2m ago•0 comments

Paramount launches hostile bid for Warner Bros. Discovery despite Netflix deal

https://www.nbcnews.com/business/media/paramount-hostile-bid-warner-bros-discovery-rcna247993
2•mellosouls•3m ago•0 comments

Dynamic Pong Wars

https://markodenic.tech/dynamic-pong-wars/
1•bookofjoe•3m ago•0 comments

Show HN: NixOS on Fairphone 5

https://github.com/gian-reto/nixos-fairphone-fp5
1•gian-reto•4m ago•0 comments

GeoVista open-source agentic geolocation

https://the-decoder.com/geovista-brings-open-source-ai-geolocation-to-near-parity-with-top-commer...
1•geox•6m ago•0 comments

Notes on building end-to-end encrypted and CRDT-based local-first applications

https://kerkour.com/crdt-end-to-end-encryption-research-notes
3•randomint64•6m ago•0 comments

Dax Martin's Telescreen 2078

https://www.instagram.com/daxmartinart/reel/DR8CbUPDufv/
1•vintagedave•7m ago•0 comments

Show HN: A Wordle helper I made after becoming a little obsessed with the game

https://wordlehelper.co
1•mr_windfrog•10m ago•0 comments

Show HN: WaldenWeek – Weekly challenges for simpler living

https://waldenweek.com
1•calinf•10m ago•1 comments

O'Brien Flops! (1993)

https://archive.nytimes.com/www.nytimes.com/ref/opinion/17opclassic_conan.html
1•TMWNN•11m ago•0 comments

Show HN: LinkedQL – Live Queries over Postgres, MySQL, MariaDB

https://github.com/linked-db/linked-ql
1•phrasecode•11m ago•1 comments

Why your CTO might start coding again

https://davegriffith.substack.com/p/why-your-cto-might-start-coding-again
1•fandorin•12m ago•0 comments

Show HN: A browser-based screen recording / editing tool for fast product demos

https://screentell.com
1•wainguo•15m ago•0 comments

Will LLMs be more or less rational consumers than humans?

https://www.alephic.com/writing/satisficing-for-llms
1•noahbrier•18m ago•0 comments

Paramount launches hostile bid for Warner Bros

https://www.cnbc.com/2025/12/08/paramount-skydance-hostile-bid-wbd-netflix.html
4•gniting•18m ago•1 comments

Mathematician Ernest Ryu on solving a 42-year-old problem in math with GPT-5 Pro

https://excitech.media/p/how-a-mathematician-used-chatgpt
1•ksdk•19m ago•0 comments

Software Applications Face a New Intermediary

https://www.wreflection.com/p/software-gets-a-new-layer
1•nowflux•20m ago•0 comments

How Pokémon cards became a stock market for millennials

https://www.theguardian.com/games/2025/dec/08/how-pokemon-cards-became-a-stock-market-for-millenn...
1•Archelaos•22m ago•0 comments

Israel's biggest defence company suspended by NATO amid corruption probe

https://www.ftm.eu/articles/israel-defence-elbit-systems-suspended-nato-corruption-investigation
5•amarcheschi•22m ago•1 comments

The benefits of standardized architectures for space missions

https://blog.satsearch.co/2025-12-05-spotlight-the-benefits-of-standardized-architectures-for-spa...
1•kartikkumar•23m ago•0 comments

Home Assistant Vibecoding in Cursor, VS Code or Other MCP Enabled IDE

https://medium.com/@eremeev/home-assistant-vibecoding-in-cursor-vs-code-or-other-mcp-enabled-ide-...
1•Vladimir42•24m ago•0 comments

Linguists start compiling first ever complete dictionary of ancient Celtic

https://www.theguardian.com/science/2025/dec/08/linguists-start-compiling-first-ever-complete-dic...
1•Archelaos•25m ago•0 comments

I read more than I write

https://enombic.com/read-more-than-write
1•vxxzy•27m ago•0 comments

The Pixel 9 Pro was designed for Google Fi, but the iPhone 16 Pro outperforms it

1•pcvetkovski•28m ago•0 comments

Teaching My AI to Sleep: Continual Learning with Llama 3 on a Mac Mini

https://medium.com/@brfmjvgd/teaching-my-ai-to-sleep-continual-learning-with-llama-3-on-a-mac-min...
2•Coll•28m ago•0 comments

Show HN: I wrote a book – Debugging TypeScript Applications (in beta)

https://pragprog.com/titles/aodjs/debugging-typescript-applications/
5•ozornin•28m ago•4 comments