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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•10mo 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: Whirligig

https://whirligig.live
1•idiocache•2m ago•0 comments

Show HN: Onepilot – Multi-agent orchestration from iPhone over native SSH

https://onepilotapp.com
1•elmlabs•2m ago•0 comments

Docker and the Linux Kernel Isolate Your Agent, and Where They Don't

https://timbreai.substack.com/p/how-docker-and-the-linux-kernel-isolate
1•bakibab•3m ago•0 comments

College instructor turns to typewriters to curb AI-written work

https://apnews.com/article/typewriter-ai-cheating-chatgpt-cornell-ce10e1ca0f10c96f79b7d988bb56448b
1•ohjeez•3m ago•0 comments

AI modeling techniques for vision-based occupancy determination

https://patents.google.com/patent/US20240185445A1/en
1•libpcap•4m ago•0 comments

The Seed Beneath the Snow

https://eli.li/the-seed-beneath-the-snow
1•birdculture•6m ago•0 comments

Cognition Announces SWE 1.6

https://cognition.ai/blog/swe-1-6
1•mschrage•9m ago•0 comments

Edwin Heathcote: Why the Max Bill Automatic Is the Ultimate Watch

https://www.ft.com/content/37cc95c7-794a-4d44-aef4-beebc534100f
1•aanet•9m ago•1 comments

Demis Hassabis: Renaissance man. He knows that image is everything

https://unherd.com/2026/04/demis-hassabis-renaissance-man/
1•mellosouls•10m ago•0 comments

Skilled older workers turn to AI training to stay afloat

https://www.theguardian.com/technology/ng-interactive/2026/apr/07/ai-training-work-jobs
3•billybuckwheat•11m ago•0 comments

is-antibot: Detect bot protection challenges from +25 providers

https://antibot.microlink.io/
2•Kikobeats•12m ago•0 comments

If-pal: play Zork (and other games) with an AI gen alpha companion

https://github.com/techbelly/if-pal
1•techbelly•13m ago•0 comments

OPFS: Origin Private File System

https://web.dev/articles/origin-private-file-system
1•nvahalik•14m ago•0 comments

Six People. 236 Episodes. 1 Coffee Shop. – Friends visualised

https://sheets.works/data-viz/friends
2•lode•17m ago•1 comments

A graph of Trump's contradictions that builds itself using a local LLM

https://biglystable.com
3•shmeeny•17m ago•0 comments

Dextr – Deterministic 100k Process Scheduler (Rust, No_std)

https://dextr-org.github.io/DEXTR-SITE/
1•WMASTERW•20m ago•1 comments

Anthropic Claude Mythos: The More Capable AI Becomes, the More Security It Needs

https://www.crowdstrike.com/en-us/blog/crowdstrike-founding-member-anthropic-mythos-frontier-mode...
1•wslh•22m ago•0 comments

Impeaching Donald J. Trump, President of the United States [pdf]

https://www.congress.gov/119/bills/hres1155/BILLS-119hres1155ih.pdf
15•embedding-shape•24m ago•1 comments

Apple approves drivers that let AMD and Nvidia eGPUs run on Mac

https://www.tomshardware.com/pc-components/gpu-drivers/apple-approves-drivers-that-let-amd-and-nv...
2•Anon84•25m ago•0 comments

FDIC Lays Out Guidelines for Institutions Issuing Stablecoins

https://www.bloomberg.com/news/articles/2026-04-07/fdic-lays-out-guidelines-for-institutions-issu...
1•toomuchtodo•25m ago•1 comments

Apple Is Reportedly Facing a 'Massive Dilemma' with the MacBook Neo

https://www.macrumors.com/2026/04/07/macbook-neo-massive-dilemma/
5•thm•26m ago•1 comments

It's possible US use EMP in Iran

2•pajuhaan•27m ago•1 comments

Boost.Container: comparing different deque implementations

https://boostedcpp.net/2026/03/30/deque/
1•joaquintides•31m ago•0 comments

Linux kernel maintainers are following through on removing Intel 486 support

https://arstechnica.com/gadgets/2026/04/linux-kernel-maintainers-are-following-through-on-removin...
2•cpeterso•31m ago•0 comments

Anthropic Lets Apple, Amazon Test More Powerful Mythos AI Model

https://www.bloomberg.com/news/articles/2026-04-07/anthropic-lets-apple-amazon-test-more-powerful...
3•marc__1•33m ago•0 comments

SEC Awards Whistleblower over $50M for Enforcement Tip

https://www.bloomberg.com/news/articles/2026-04-07/sec-awards-whistleblower-over-50-million-for-e...
2•toomuchtodo•33m ago•1 comments

Cybersecurity in the Age of Instant Software

https://www.schneier.com/blog/archives/2026/04/cybersecurity-in-the-age-of-instant-software.html
2•speckx•33m ago•0 comments

Shots fired – – over proposal to build datacenter in Indianapolis

https://www.theregister.com/2026/04/07/indianapolis_datacenter_shots_fired/
1•mattydread•34m ago•0 comments

Callgraph.io – Visualize the code flow of complex databases and system softwares

https://callgraph.io/
1•elwray•35m ago•1 comments

Show HN: Turn your GitHub activity into a weekly dev blog on GitHub Pages

https://github.com/deariary/github-weekly-reporter
2•unhappychoice•38m ago•0 comments