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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!

HyprTile – a new app launcher for the Hyprland ecosystem

https://hyprtile.org
1•BimJeam•57s ago•1 comments

The most exciting Bluetooth feature in years

https://www.theverge.com/report/839245/auracast-marketing-jbl-lg-samsung-google
1•ravenical•1m ago•1 comments

The One Number That Matters

https://domofutu.substack.com/p/the-one-number-that-matters
1•wjb3•1m ago•0 comments

Show HN: XeraSentry – Real-time Ethereum security monitoring in Python

https://lavender-clarette-17.tiiny.site
1•Chu_Wong•1m ago•0 comments

DankLinux Repository

https://danklinux.com/docs/danklinux/
1•chrchr•7m ago•1 comments

The Man Who Was Supposed to Kill Martin Luther King Jr

https://slate.com/news-and-politics/2025/12/martin-luther-king-mlk-fbi-files-murder-assassination...
1•martey•7m ago•0 comments

New Study Raises Heart Health Concerns About Long-Term Melatonin Use

https://chillnoise.com/blog/new-study-raises-heart-health-concerns-about-long-term-melatonin-use
1•TailErrorSwift•7m ago•1 comments

I launched a free podcast mastering tool and it hit #1 on Google

https://freepodcastmastering.com
1•pruufsocial•12m ago•3 comments

Show HN: AI that scores news for emotional coercion and rhetorical manipulation

https://www.goanie.com/
2•goshtasb•12m ago•1 comments

Magnitude-7.0 earthquake hits in remote wilderness along Alaska-Canada border

https://apnews.com/article/earthquake-alaska-canada-yukon-7c0f68370e387b1b23fa7fe7fc9c2c71
5•appreciatorBus•16m ago•0 comments

Ask HN: Is Mythical Man-Month still relevant in todays AI Vibe Coding world?

2•Codegres•24m ago•4 comments

Project Bhavanga: Fixing LLM Context Dilution with Buddhist Psychology

2•DosankoTousan•29m ago•1 comments

The Medusa compiler: create interactive ebooks

https://www.erix.it/medusa.html
1•znpy•30m ago•0 comments

The Heist of Nearly 1/2 Ton of Its Culinary Crown Jewels Rocks French Village

https://www.nytimes.com/2025/12/04/world/europe/france-escargot-heist.html
1•bookofjoe•33m ago•1 comments

Moving Off of Netlify to Self Hosted

https://broderic.blog/post/moving-away-from-netlify/
1•Group_B•34m ago•0 comments

SedaiBasic2: A modern reimplementation of Commodore BASIC v7

https://github.com/camauri/SedaiBasic2
1•amichail•35m ago•0 comments

Introducing Proton Sheets: Protect the data that drives your business

https://proton.me/blog/sheets-proton-drive
2•akyuu•36m ago•0 comments

Aristotle from HarmonicMath has solved Erdős Problem 124 in LEAN

https://xenaproject.wordpress.com/2025/12/05/formalization-of-erdos-problems/
1•unprovable•36m ago•0 comments

Show HN: FuseCells – a handcrafted logic puzzle game with 2,500 levels

https://apps.apple.com/us/app/fusecells-logic-grid-puzzle/id6754704139
6•keini•37m ago•1 comments

Empirical data on human chain-of-thought: 100 thought intrusions, one stopwatch

https://doi.org/10.13140/RG.2.2.14609.08800
3•Fanaxuki•37m ago•1 comments

Petit Louis – Baby tracker that predicts when your baby will nap

https://apps.apple.com/us/app/petit-louis-baby-tracker/id6754668538
1•sfl83•37m ago•1 comments

A fork of Calibre called Clbre, because the AI is stripped out

https://github.com/grimthorpe/clbre
9•pabs3•38m ago•3 comments

Former deep-cover Russian spy leads Moscow campaign to co-opt Indian tech

https://www.msn.com/en-us/news/world/former-deep-cover-russian-spy-leads-moscow-campaign-to-co-op...
1•MilnerRoute•39m ago•0 comments

Show HN: Watsn.ai – Scarily accurate lie detector

https://watsn.ai/
2•flx1012•39m ago•0 comments

Deep Dive in Java vs. C++ Performance

https://johnnysswlab.com/deep-dive-in-java-vs-c-performance/
2•ingve•41m ago•0 comments

OpenTelemetry Distribution Builder

https://github.com/observIQ/otel-distro-builder
2•pveierland•46m ago•1 comments

Kilauea erupts, destroying webcam [video]

https://www.youtube.com/watch?v=TK2N99BDw7A
30•zdw•49m ago•3 comments

Updating Rust's Linux musl targets to 1.2.5

https://blog.rust-lang.org/2025/12/05/Updating-musl-1.2.5/
2•ingve•51m ago•0 comments

The Resonant Computing Manifesto

https://resonantcomputing.org/
1•tlarkworthy•51m ago•0 comments

Kenyans lured by lucrative job offers and sent to fight for Russia

https://www.bbc.com/news/articles/c20gn2d51l1o
4•breve•52m ago•0 comments