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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!

Show HN: Adding some fun and interactivity to my site

https://blazingbanana.com/
1•properbrew•1m ago•0 comments

2025 in Science

https://en.wikipedia.org/wiki/2025_in_science
1•gtsnexp•2m ago•0 comments

Better Communication Protocols with Ada's Record Representation Clauses

https://blog.liampwll.com/posts/ada_record_representation_protocols/
1•LiamPowell•4m ago•0 comments

Using Variational Autoencoders to Generate Human Faces

https://mayberay.bearblog.dev/generating-human-faces-with-variational-autoencoders/
1•mugamuga•4m ago•1 comments

Show HN: Make the most of your limited life, with ideas aligned with your goals

https://www.vivotime.net/
1•lopespm•5m ago•0 comments

Phone Searches at U.S. Borders: What Travelers Need to Know

https://www.nytimes.com/2025/12/31/travel/airport-border-phone-search.html
1•fleahunter•8m ago•0 comments

Show HN: Geospatial Atlas, a Fork of Apple's Embedding Atlas for Geospatial

https://github.com/do-me/geospatial-atlas
1•do-me•9m ago•0 comments

The countries where digital ID already exists

https://news.sky.com/story/the-countries-where-digital-id-already-exists-13441075
1•smurda•10m ago•0 comments

KernelEvolve: Agentic kernel coding for heterogeneous AI accelerators (Meta)

1•gangliao•13m ago•0 comments

International Date Line

https://en.wikipedia.org/wiki/International_Date_Line
1•jakobedding•13m ago•0 comments

Fixing a Buffer Overflow in Unix v4 Like It's 1973

https://sigma-star.at/blog/2025/12/unix-v4-buffer-overflow/
2•Deeg9rie9usi•14m ago•0 comments

A Comprehensive Guide to Fakra Connectors

https://community.element14.com/technologies/experts/b/comprehensive-guides/posts/a-comprehensive...
1•JojoFatsani•15m ago•0 comments

Show HN: Sovereign AGI – Functional Implementation by Ananya Soni

https://github.com/AI-Sovereign/Multimodal-AGI-Architecture-Implementation-v1
1•AISovereignDev•16m ago•0 comments

Tools to Help You Focus

http://postmake.io/zen-list
1•Malfunction92•17m ago•0 comments

The most durable tech is boring, old, and everywhere

https://www.theregister.com/2025/12/31/long_lived_tech/
1•jjgreen•17m ago•0 comments

Eventual Rust in CPython

https://lwn.net/Articles/1046933/
1•0xpgm•17m ago•0 comments

A Solid Load of Bull

https://loup-vaillant.fr/articles/solid-bull
3•todsacerdoti•20m ago•0 comments

Show HN: Is it time yet? Countdowns for Google Meet

https://isittime.app/
1•cmaster11•23m ago•1 comments

Disney will pay $10M to settle children's data privacy lawsuit

https://www.bleepingcomputer.com/news/security/disney-will-pay-10m-to-settle-claims-of-childrens-...
1•fleahunter•28m ago•0 comments

Unexpected Surprise: Windows 11 Outperforming Linux on an Intel Arrow Lake H

https://www.phoronix.com/review/windows-beats-linux-arl-h
1•oshanz•30m ago•0 comments

Several ways is which software can be surprisingly slow

https://gregoryszorc.com/blog/2021/04/06/surprisingly-slow/
2•fanf2•30m ago•0 comments

What is the best comment in source code you have ever encountered? (2011)

https://stackoverflow.com/questions/184618/what-is-the-best-comment-in-source-code-you-have-ever-...
2•chistev•41m ago•1 comments

Why isn't Google showing my site's logo in search results?

https://www.google.com/search?q=site%3Avect.pro&oq=&gs_lcrp=EgZjaHJvbWUqCQgAECMYJxjqAjIJCAAQIxgnG...
2•WoWSaaS•43m ago•3 comments

Would you still celebrate New Year's Day, if it wasn't a day off?

2•olek•46m ago•0 comments

Making end-to-end encrypted AI chat feel like logging in

https://confer.to/blog/2025/12/passkey-encryption/
1•Vinnl•48m ago•0 comments

Execute Code in a Remote Python Process

https://rawomb.at/posts/python-remote-exec/
2•lumpa•51m ago•0 comments

GitHub – tomasf/Cadova: Swift DSL for parametric 3D modeling

https://github.com/tomasf/Cadova
2•bdcravens•55m ago•0 comments

2026 budget reset: I Converted official tax/fee schedules into wallet-level math

https://www.thepricer.org/how-much-will-new-2026-laws-cost-you/
2•jimmyhamdriks•57m ago•1 comments

Sora2 API – Sora 2 Video Generation API

https://sora2-api.com
4•paidx•58m ago•1 comments

The rise of industrial software

https://chrisloy.dev/post/2025/12/30/the-rise-of-industrial-software
39•chrisloy•1h ago•16 comments