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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!

WebAssembly 128-bit packed SIMD Extension

https://github.com/WebAssembly/spec/blob/main/proposals/simd/SIMD.md
1•tosh•1m ago•0 comments

Show HN: Hypergraph – directed hypergraph library in Rust (40 graph algorithms)

https://github.com/yamafaktory/hypergraph
1•yamafaktory•4m ago•0 comments

Insane AI Breakthroughs with Demis Hassabis [video]

https://www.youtube.com/watch?v=huAwz_BR8WM
1•deepserket•4m ago•0 comments

Ask HN: How is all new software not broken?

1•zwilderrr•5m ago•0 comments

Consciousness might be a fundamental feature of reality, like gravity

https://spacedaily.com/d-consciousness-might-not-be-something-the-brain-creates-it-might-be-a-fun...
1•sowbug•7m ago•0 comments

Annotation Pro

https://apps.microsoft.com/detail/9ns87mqb29c7?hl=en-US&gl=US
1•casultra•7m ago•1 comments

Epic reveals first Unreal Engine 6 game, and it's not Fortnite

https://www.pcgamer.com/gaming-industry/epic-reveals-first-unreal-engine-6-game-and-its-not-fortn...
1•Brajeshwar•8m ago•0 comments

A GenAIration Lost in Space

https://playtechnique.io/blog/a-genairation-lost-in-space.html
1•gwynforthewyn•8m ago•1 comments

Google's Family link can be abused to lock down compromised accounts

https://techwolf12.nl/blog/google-family-link-exploit/
1•techwolf12•8m ago•0 comments

Pope Leo says AI must be 'disarmed' in first major teaching

https://www.bbc.com/news/articles/cedppn6002jo
1•1vuio0pswjnm7•10m ago•1 comments

Same model, different provider, different structured output

https://guilhermesfc.com/provider-variance-structured-extraction.html
1•guilhermesfc•10m ago•0 comments

Show HN: YourMemory, persistent memory layer with temporal reasoning for agents

1•SachitRafa•11m ago•2 comments

Peer to Peer Messaging App

https://www.mindtheclub.com
2•GradleSurvivor•13m ago•1 comments

Automatia Update: Pulling the (API) Strings

https://libriscv.no/blog/pulling-the-strings/
1•fwsgonzo•13m ago•0 comments

Pope Leo, Anthropic co-founder call for church-tech ethics partnership

https://www.ncronline.org/vatican/vatican-news/pope-leo-anthropic-co-founder-call-church-tech-eth...
1•tow21•14m ago•1 comments

Slop is code you can't work with

https://dwyer.co.za/static/slop-is-code-you-cant-work-with.html
1•sixhobbits•17m ago•1 comments

Did the Linux memory management maintainer "just quit"?

2•hliyan•17m ago•0 comments

New Wix Headless Skills Released

https://www.wix-headless.dev/
1•yoavcwix•19m ago•1 comments

Ruby vs. Java vs. TypeScript: my experience on building a Cowork DOCX plugin

https://tanin.nanakorn.com/ruby-java-typescrip-claude-docx-plugin/
1•theanonymousone•19m ago•0 comments

Advancing mathematics research with AI-driven formal proof search

https://arxiv.org/abs/2605.22763
2•azhenley•24m ago•0 comments

Google warns lawful-access bill could create major cybersecurity risks

https://www.theglobeandmail.com/politics/article-google-lawful-access-bill-c-22-cybersecurity-risks/
3•ethanplant•24m ago•2 comments

Open-Weight Models Don't Need to Win

https://twitter.com/googrish/status/2058981136370651610
4•kumama•28m ago•3 comments

Show HN: CloudPostOffice – Send messages between apps and agents in 4 lines

https://cloudpostoffice.com/
2•tealpod•30m ago•1 comments

China battery stores electricity and hydrogen

https://www.autonocion.com/us/china-stores-electricity-hydrogen/
3•stevenalowe•31m ago•1 comments

The bootstrapper's EU stack for under €10 per month

https://eualternative.eu/guides/bootstrapper-free-tier-eu-stack/
8•sparkling•31m ago•0 comments

One of the first games made in the Build Engine is about to be delisted

https://www.pcgamer.com/games/fps/one-of-the-first-games-made-in-the-build-engine-is-about-to-be-...
2•Brajeshwar•32m ago•0 comments

What is pending for SpaceX Starship to be a Moonship for NASA astronauts?

https://jatan.space/moon-monday-issue-276/
2•JPLeRouzic•32m ago•1 comments

Exposing fake Canadians pushing to join the US [video]

https://www.youtube.com/watch?v=NXafC7tlqt0
2•cloche•34m ago•0 comments

EU plans to fine Google high triple-digit million euro sum, Handelsblatt reports

https://www.reuters.com/world/europe/eu-plans-fine-google-high-triple-digit-million-euro-sum-hand...
2•thm•38m ago•0 comments

Alaska's oil revival sparks a new energy rush Into the Arctic

https://fortune.com/2026/05/24/alaska-oil-revival-energy-investment-arctic-drilling-national-petr...
13•Brajeshwar•48m ago•9 comments