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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!

Japan business manager visa holders leaving without reentry permits surge

https://japantoday.com/category/national/japan-business-manager-visa-holders-leaving-without-reen...
1•SenHeng•2m ago•0 comments

Instagram Reel and Video Downlaoder

https://socialsaver.net/instagram-downloader
1•M_Saqlain•3m ago•0 comments

No AI. Build your own tree directory viewer in C by hand

https://www.youtube.com/watch?v=tiMHtc6l7xM
1•hayyoth•4m ago•0 comments

Tesla makes cars that fly? [video]

https://www.youtube.com/watch?v=7p5LxFdc-Qg
2•merinpapz10•11m ago•0 comments

Chirp Pong – uses microphones and audio for networked game play

https://simonwillison.net/2026/Oct/15/chirp-pong/
1•havaloc•14m ago•1 comments

Faster Post-Quantum Cryptography with JDK Intrinsics

https://inside.java/2026/09/30/faster-post-quantum-cryptography-with-jdk-intrinsics/
1•ejboy•14m ago•0 comments

SPJ: A Taste of Verse (Programming Language) [video]

https://www.youtube.com/watch?v=I6fL66L3jPs
1•undecidabot•23m ago•0 comments

Modernizing the VS Code UI

https://code.visualstudio.com/blogs/2026/10/15/modern-ui
2•soheilpro•25m ago•0 comments

What does the (Fire)fox say?

https://blog.mozilla.org/en/firefox/new-firefox-sounds/
3•soheilpro•25m ago•0 comments

A College-by-College Guide to Which Majors Pay Off – Or Don't

https://www.nytimes.com/interactive/2026/10/07/your-money/college-degree-earnings-guide.html
2•gmays•34m ago•0 comments

Earthquake alert falsely reports magnitude 9.9 and intensity 7 in Japan

https://twitter.com/_TheoSteiner/status/2110943880900231439
4•theo-steiner•35m ago•2 comments

Show HN: Lobby Domains: Find Domains with Chrome's On-Device AI

https://lobby.domains/
1•dalemhurley•39m ago•0 comments

The Russian Bots Went Silent. Or Did They?

https://www.lawfaremedia.org/article/the-russian-bots-went-silent.-or-did-they
4•cdrnsf•42m ago•0 comments

Dotnetup

https://devblogs.microsoft.com/dotnet/introducing-dotnetup/
5•soheilpro•49m ago•0 comments

The Thinking Leakage in Reinforcement Learning for LLMs

https://arxiv.org/abs/2610.14270
2•ilreb•49m ago•0 comments

Sergey Brin says Google's AI models are reaching recursive self-improvement

https://www.businessinsider.com/sergey-brin-google-gemini-ai-argon-recursive-self-improvement-rsi...
4•ryan_j_naughton•49m ago•1 comments

Researchers discover rogue Chinese AI agent fleet and talk with it

https://swarmcha.se/posts/chinese-agent-fleet-full-report
2•jakemanger•57m ago•1 comments

Linus Torvalds on "don't use AI for X"

https://lore.kernel.org/lkml/CAHk-=whTs09_ozN+e09GU68N1wPP56MUzDjrg9rnKxQUa0A_4Q@mail.gmail.com/
5•thatslast•57m ago•1 comments

Local and Distributed Large LLM Inference with MLX and RDMA on Mac Studio

https://machinelearning.apple.com/research/mlx-distributed-inference
3•vinhnx•1h ago•1 comments

All.net Analyst Report and Newsletter [pdf]

https://all.net/Analyst/2026-10C.pdf
1•sans_souse•1h ago•0 comments

3DCodeVerse

https://3dcodeverse.com/
3•ilreb•1h ago•0 comments

CoreWeave Founders Shield Fortunes with $3.3B Stock Sales

https://www.bloomberg.com/news/articles/2026-10-15/coreweave-founders-shield-fortunes-with-3-3-bi...
3•qlte•1h ago•0 comments

Artificial Intelligence, Economics, Sustainability, and Irreversibility

https://www.alexahn.com/2026/10/artificial-intelligence-economics.html
2•alexahn•1h ago•0 comments

The Cuckoo's Egg

https://en.wikipedia.org/wiki/The_Cuckoo%27s_Egg_(book)
3•sans_souse•1h ago•0 comments

Show HN: Kitaphone – Call mobile phones and landlines directly from the browser

https://kitaphone.com
1•beardnetworks•1h ago•0 comments

Major AI Copyright Ruling Lawyer Explains [video]

https://www.youtube.com/watch?v=SJCw54PUdXg
2•baranul•1h ago•1 comments

Researchers Stranded an AI Agent on a Virtual Island. Things Got Weird

https://gizmodo.com/researchers-stranded-an-ai-agent-on-a-virtual-island-things-got-very-weird-20...
3•em3rgent0rdr•1h ago•0 comments

South Korea's stock market down, president telling people not to commit suicide

https://twitter.com/litcapital/status/2110752546415382699
4•toomuchtodo•1h ago•3 comments

India Protests – Gen Z or Deep State

https://substack.com/@ghosespot
2•sandipghose•1h ago•0 comments

$24,000 AI experiment ports TypeScript compiler to Rust

https://www.theregister.com/devops/2026/10/15/24000-ai-experiment-ports-typescript-compiler-to-ru...
3•alexahn•1h ago•0 comments