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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!

Room-Size Particle Accelerators Go Commercial

https://spectrum.ieee.org/plasma-wakefield-acceleration
1•geox•11m ago•0 comments

Damn Small Linux

https://www.damnsmalllinux.org/
1•grubbs•13m ago•1 comments

India weighs greater phone-location surveillance

https://www.reuters.com/sustainability/boards-policy-regulation/india-weighs-greater-phone-locati...
1•gdeglin•16m ago•0 comments

Real Policies to stop people using AI for cyberattacks, bioweapons, & more

https://app.excalidraw.com/l/7ULi4Jv3VIo/ATs5lrdppys
1•PhilosophyForAI•18m ago•1 comments

Increasing code performance with LTO [video]

https://www.youtube.com/watch?v=fPGodf5hNoo
1•edward28•20m ago•0 comments

I opened a shared notebook where anyone can add their favorite music playlist

https://clipnotebook.com/c84de082-65d1-4eaf-9449-ef48f67462dd
5•puildupO•21m ago•4 comments

Apple's chief chip architect has reportedly talked to Tim Cook about leaving

https://www.tomshardware.com/tech-industry/apples-chief-chip-architect-for-the-last-decade-has-re...
1•pseudolus•28m ago•1 comments

Asynchronous Circuit

https://en.wikipedia.org/wiki/Asynchronous_circuit
1•DustinEchoes•32m ago•0 comments

Programming Party Tricks [video]

https://www.youtube.com/watch?v=4KdvcQKNfbQ
2•marvinborner•32m ago•0 comments

Lessons Learned After Trying MeshCore for Off-Grid Text Messaging

https://hackaday.com/2025/12/06/lessons-learned-after-trying-meshcore-for-off-grid-text-messaging/
2•lxm•39m ago•0 comments

The Authentication Rabbit Hole: What I Learned from Vibe-Coding Auth with AI

https://fusionauth.io/blog/vibe-coding-authentication
3•mooreds•41m ago•0 comments

Show HN: Enterprise ad-blocker and privacy guard

https://zen.irbis.sh/enterprise
3•anfragment•51m ago•0 comments

Claude Diary

https://rlancemartin.github.io/2025/12/01/claude_diary/
2•aratahikaru5•56m ago•1 comments

HiRTOS: A high-integrity multi-core RTOS kernel written in SPARK Ada

https://github.com/jgrivera67/HiRTOS
2•jacques_chester•1h ago•0 comments

Multiplying our way out of division

https://xania.org/202512/07-division-again
3•ibobev•1h ago•0 comments

Show HN: I replaced my premium workout app with vibecode

https://strengthquest.lovable.app/
2•maddmann•1h ago•0 comments

NY judge orders ChatGPT conversation handover in newspaper copyright win

https://www.nydailynews.com/2025/12/03/ny-judge-orders-openai-to-hand-over-chatgpt-conversations-...
4•gnabgib•1h ago•0 comments

Oath of the Horatii

https://en.wikipedia.org/wiki/Oath_of_the_Horatii
1•andsoitis•1h ago•0 comments

AI chatbots can sway voters better than political advertisements

https://www.technologyreview.com/2025/12/04/1128824/ai-chatbots-can-sway-voters-better-than-polit...
1•gnabgib•1h ago•1 comments

Linux GPIB Drivers Declared Stable 53 Years After HP Introduced the Bus

https://www.phoronix.com/news/GPIB-De-Staged-Linux-6.19
5•LorenDB•1h ago•1 comments

Spinlocks vs. Mutexes: When to Spin and When to Sleep

https://howtech.substack.com/p/spinlocks-vs-mutexes-when-to-spin
28•birdculture•1h ago•4 comments

What Folk Can Do

https://folk.computer/guides/what-folk-can-do
3•luu•1h ago•1 comments

List of Common Misconceptions (Wikipedia)

https://en.wikipedia.org/wiki/List_of_common_misconceptions
4•greazy•1h ago•0 comments

Energy efficiency task scheduling algorithm for multi-core embedded platforms

https://www.sciencedirect.com/science/article/abs/pii/S0045790625008298
1•stevenjgarner•1h ago•1 comments

A Look into NASA's Coding Philosophy (2017)

https://observer.com/2017/07/a-look-into-nasa-coding-philosophy-kennedy-space-center-programming/
2•kristianp•1h ago•0 comments

Toyota Unintended Acceleration and the Big Bowl of "Spaghetti" Code(2013)

https://www.safetyresearch.net/toyota-unintended-acceleration-and-the-big-bowl-of-spaghetti-code/
5•SoKamil•1h ago•1 comments

The Ilya Sutskever interview – my key takeaways

https://quickchat.ai/post/ilya-sutskever-interview
2•piotrgrudzien•1h ago•0 comments

Show HN: Cdecl-dump - represent C declarations visually

https://github.com/bbu/cdecl-dump
6•bluetomcat•1h ago•2 comments

An Attempt at a Compelling Articulation of Forth's Practical Strengths and Eter

https://im-just-lee.ing/forth-why-cb234c03.txt
2•todsacerdoti•1h ago•0 comments

Algebraic Constraints [pdf]

http://reports-archive.adm.cs.cmu.edu/anon/scan/CMU-CS-83-132.pdf
2•andsoitis•1h ago•0 comments