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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•8mo 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!

Bay Area software rep. lost $176K after accepting remote job she thought with FB

https://abc7news.com/post/bay-area-software-rep-lost-176k-savings-accepting-remote-job-she-though...
1•randycupertino•1m ago•0 comments

Joy of a Competent Beginner

https://xydinesh.com/posts/joy-of-competent-beginner/
1•xydinesh•1m ago•1 comments

Florida's Unprecedented Execution Pace

https://deathpenaltyinfo.org/new-report-examines-floridas-unprecedented-execution-pace-and-trends...
1•weslleyskah•3m ago•0 comments

Show HN: C/C++ Cheatsheet – a modern, practical reference for C and C++

https://github.com/crazyguitar/cppcheatsheet
1•crazyguitar•4m ago•0 comments

Show HN: The firmware that triggered a 13-hour WEF lockdown

https://github.com/seabass011/davos-incident-firmware
1•reutinger•7m ago•0 comments

Rust Burn 0.20.0 Release: Unifying CPU and GPU Kernels with CubeCL

https://burn.dev/blog/release-0.20.0/
1•stmw•8m ago•0 comments

Autodesk burns the village to feed AI and the Cloud – cuts 7% of workforce

https://blog.adafruit.com/2026/01/22/autodesk-burns-the-village-to-feed-ai-and-the-cloud-cuts-7-o...
2•zdw•10m ago•0 comments

Introduction to Coinduction in Agda Part 1: Coinductive Programming

https://jesper.cx/posts/coinduction-part-1.html
1•matt_d•11m ago•0 comments

Show HN: Verify Unlimited Emails with 99.9% accuracy

https://email2verify.com/
1•aswinsilvadasan•12m ago•1 comments

Show HN: Public Key Directory – Key Transparency for the Fediverse

https://publickey.directory
1•some_furry•16m ago•0 comments

Chinese AI is a risk for Europe. So is shunning it

https://www.economist.com/leaders/2026/01/22/chinese-ai-is-a-risk-for-europe-so-is-shunning-it
1•petethomas•17m ago•0 comments

Show HN: Neoment – A Matrix client, bringing chat functionality into your editor

https://github.com/Massolari/neoment
1•wsdjeg•18m ago•0 comments

I spent 3 years chasing Backlinks the wrong way, what worked in 2026?

https://webmatrices.com/post/i-spent-3-years-chasing-backlinks-the-wrong-way-heres-what-actually-...
1•bishwasbh•19m ago•0 comments

AI-Free Free-to-Use Music Shorts

https://onj.me/shorts/
1•cdvonstinkpot•23m ago•0 comments

Mortal Kombat Motion Picture Soundtrack 1995 [video]

https://www.youtube.com/watch?v=ZozxHpX4x8c
1•nomilk•23m ago•0 comments

Badgefor.me – Work from home. Look like you didn't

https://www.badgefor.me/
2•squalrus•28m ago•0 comments

Toms AI BackGround Remover Software

https://tomdahne.com/TomsBGRemover/pad/tomsbgremover.xml
1•ezimedia•28m ago•1 comments

.NET Aspire is now open source [video]

https://www.youtube.com/watch?v=crvgYrFYrrw
1•tartoran•29m ago•0 comments

Winapp, the Windows App Development CLI

https://blogs.windows.com/windowsdeveloper/2026/01/22/announcing-winapp-the-windows-app-developme...
1•thunderbong•33m ago•0 comments

I accidentally made probabilistic programming 30-200x faster

1•Aeowulf•34m ago•0 comments

Show HN: Cosmic AI – See your tech debt in dollars and fix it fast

https://cosmic-ai.pages.dev/
1•Saurabh_Kumar_•35m ago•0 comments

The unreasonable effectiveness of pattern matching

https://arxiv.org/abs/2601.11432
1•chbint•35m ago•0 comments

The AI Revolution in Coding: Why I'm Ignoring the Prophets of Doom

https://codingismycraft.blog/index.php/2026/01/23/the-ai-revolution-in-coding-why-im-ignoring-the...
2•codingismycraft•38m ago•0 comments

Elon Musk loves this. X article to video (open-source)

https://github.com/pooriaarab/x-article-to-video
1•pooriaarab•40m ago•0 comments

Why talking to LLMs has improved my thinking

https://philipotoole.com/why-talking-to-llms-has-improved-my-thinking/
3•otoolep•41m ago•0 comments

CIDR 2026 Proceedings

https://vldb.org/cidrdb/2026/
1•remywang•44m ago•0 comments

The Lost Art of XML

https://marcosmagueta.com/blog/the-lost-art-of-xml/
23•Curiositry•48m ago•4 comments

Over 1k Arizona teachers resigning plays a part in shortage

https://azpbs.org/horizon/2025/11/teacher-shortage-2/
3•toomuchtodo•49m ago•1 comments

Asciinema: Making Movies at the Command-Line

https://lwn.net/Articles/1053355/
1•signa11•51m ago•0 comments

Google decides what you see in Images and where invisible keywords are born

https://comuniq.xyz/post?t=738
1•01-_-•54m ago•0 comments