frontpage.
newsnewestaskshowjobs

Open Source @Github

fp.

Open in hackernews

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•1y 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!

Chalkboard and Avatar for AI Agents

https://github.com/zohayrslileh/more-space
1•zouhirdx•2m ago•1 comments

Give your AI agent awareness of what's happening around you

https://github.com/SyncSo-Inc/syncso
1•ts3479•2m ago•0 comments

Musk explains why Tesla Robotaxi isn't running at night, and Lidar is the answer

https://electrek.co/2026/10/03/tesla-robotaxi-pets-night-musk-lidar/
1•cisc•5m ago•0 comments

China's space plane appears to have released a mystery object in orbit

https://www.space.com/space-exploration/launches-spacecraft/chinas-space-plane-appears-to-have-re...
3•mooreds•10m ago•0 comments

What is the true reach of a human being?

https://www.echohive.ai/the-reach-of-being
1•echohive42•13m ago•0 comments

Ask HN: How different is Apple App Store and Play Store paid apps market

1•sahil423•13m ago•0 comments

What September's Employment Numbers Say [video]

https://www.youtube.com/watch?v=mlZg8gQAUTk
1•mooreds•14m ago•0 comments

Look for the Helpers

https://1429.help/about/
1•mooreds•16m ago•0 comments

Kansas Legislature's Cuts Compel Fort Hays State Uni to Close Sternberg Museum

https://kansasreflector.com/2026/09/30/budget-woes-compel-fort-hays-state-university-to-prepare-s...
1•rdmuser•16m ago•0 comments

Decoding Looped Transformers Better for Almost Free

https://arxiv.org/abs/2610.02185
1•simonpure•22m ago•0 comments

How the bad science of AI doomerism is good for big business

https://thebulletin.org/2026/09/how-the-bad-science-of-ai-doomerism-is-good-for-big-business/
4•paimapi•27m ago•0 comments

Packing Unit Squares in Squares: A Survey and New Results

https://erich-friedman.github.io/papers/squares/squares.html
3•thunderbong•28m ago•0 comments

Inside Anthropic's Quest to Instill Morality into Its A.I. Models

https://www.nytimes.com/2026/09/29/us/anthropic-claude-morals-ai.html
3•bookofjoe•37m ago•2 comments

Context Monorepos

https://backnotprop.com/blog/context-monorepos/
1•ramoz•47m ago•1 comments

Post-Quantum WireGuard vs. Classical: 37x Keys (2026)

https://shattered.io/post-quantum-wireguard-vs-classical-wireguard-2026/
1•msgchainhq•48m ago•0 comments

Robert X Cringley's Triumph of the Nerds and Nerds 2.0.1 [video]

https://www.youtube.com/watch?v=toSRmKKiosQ&list=PLAXA1ccaOnGdbStEwcKE56YzlYDYOx2Tx
5•JMiao•50m ago•0 comments

OpenAI's latest features take direct aim at the app store model

https://techcrunch.com/2026/09/29/openais-latest-features-take-direct-aim-at-the-app-store-model/
1•thm•50m ago•0 comments

Television

https://television.run/
2•ray__•51m ago•0 comments

I went looking for surveillance cameras in my neighbourhood

https://www.bbc.com/future/article/20260902-how-to-watch-the-cameras-that-watch-you
2•cisc•51m ago•0 comments

The Alto Line, a comfortable ride for the business executive

https://melvynschobel.substack.com/p/the-alto-line-a-comfortable-ride
1•dorygold•56m ago•1 comments

Row-level security performance in PostgreSQL, measured

https://now-next.nl/en/insights/row-level-security-performance-postgresql/
3•plaur782•58m ago•0 comments

Superharness Built This

https://djentic.ai/showcase/particle-engine/
1•kentino•59m ago•0 comments

Single cortical neurons as deep artificial neural networks

https://www.sciencedirect.com/science/article/pii/S0896627321005018
2•E-Reverance•1h ago•0 comments

Repeated scope failures in real Codex projects(GPT-6)

https://community.openai.com/t/repeated-scope-failures-in-real-codex-projects/1399757
1•Rapzid•1h ago•0 comments

The Alto Line:A ride to hell

https://melvynschobel.substack.com/p/the-alto-line-a-ride-to-hell
1•dorygold•1h ago•0 comments

Feathered Dinosaur Discovery in China Suggests Flight Evolved Multiple Times

https://www.sciencealert.com/discovery-of-exquisite-feathered-dinosaur-in-china-could-rewrite-the...
2•gmays•1h ago•0 comments

Purple Brains: Fractional CPO services for tech startups

https://www.purplebrains.com
1•Sharanxxxx•1h ago•0 comments

No Model Required: Text Entropy Rate Filtering Mitigates Iterative Fine-Tuning

https://arxiv.org/abs/2610.01493
1•sbulaev•1h ago•0 comments

Tell HN: Looking for help getting an important paper implemented

1•mwhite•1h ago•1 comments

Sign up for AWS (new): simpler onboarding and a spending limit – keep moving

https://tongwing.woon.sg/blog/sign-up-for-aws-new-simpler-onboarding-and-a-spending-limit/
1•9woc•1h ago•0 comments