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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!

Elixir: Gradual Set-Theoretic Types

https://hexdocs.pm/elixir/main/gradual-set-theoretic-types.html
1•sergiotapia•6m ago•0 comments

Show HN: EchoFluid – a video transcription without uploading full videos

https://www.echofluid.com
1•samwulol•11m ago•0 comments

ICE Launches "Operation Catch-of-the-Day" Across Maine

https://www.dhs.gov/news/2026/01/21/ice-launches-operation-catch-day-targeting-worst-worst-crimin...
3•SanjayMehta•11m ago•0 comments

Show HN: AsyncReview – An OSS DevinReview Using RLMs

https://github.com/AsyncFuncAI/AsyncReview
1•sashimikun•16m ago•0 comments

Why is it legal and ok when big corp. straight tries to scam a user?

27•kingleopold•18m ago•4 comments

Read Bondi's Letter to Minnesota's Governor

https://www.nytimes.com/interactive/2026/01/24/us/pam-bondi-walz-doc.html
3•duxup•22m ago•1 comments

Skijoring is taking travellers off Colorado's ski-resort circuit

https://www.bbc.com/travel/article/20260121-skijoring-colorados-wildest-winter-sport
1•1659447091•23m ago•0 comments

ICE Is Not Like the Brownshirts, the Brownshirts Identified Themselves

https://www.mcsweeneys.net/articles/ice-is-nothing-like-the-brownshirts-because-the-brownshirts-a...
10•bjourne•31m ago•1 comments

The Responsibility of Intellectuals

https://www.nybooks.com/articles/1967/02/23/a-special-supplement-the-responsibility-of-intelle/
3•andsoitis•36m ago•0 comments

US SEC: India refused to serve summons to Adani Group under Hague Convention

https://economictimes.indiatimes.com/news/company/corporate-trends/us-regulator-seeks-to-bypass-i...
2•alok-g•36m ago•1 comments

Alex Honnold completes Taipei 101 skyscraper climb without ropes or safety net

https://www.cnn.com/sport/live-news/taiwan-alex-honnold-climb-taipei-101-01-25-26-intl-hnk
28•keepamovin•38m ago•11 comments

The Bay Area Has Lost Its Soul. No Wonder Everyone's Leaving [video]

https://www.youtube.com/watch?v=9_bsaF5TTEE
1•keepamovin•41m ago•1 comments

Prototyping NixOS with FDE, tang and Podman using Claude.AI

https://claude.ai/public/artifacts/e7cdb55a-3960-4dc9-bd1a-3c73a3145fb9
2•cptnslow•42m ago•1 comments

Show HN: VM-curator – a TUI alternative to libvirt and virt-manager

https://github.com/mroboff/vm-curator
2•theYipster•43m ago•0 comments

nvidia-smi hangs indefinitely after ~66 days

https://github.com/NVIDIA/open-gpu-kernel-modules/issues/971
27•tosh•47m ago•0 comments

Kb_text_shape: Harfbuzz like single file C/C++ text shaping library

https://github.com/JimmyLefevre/kb
2•inxode•47m ago•0 comments

ADSL Works over Wet String

https://www.revk.uk/2017/12/its-official-adsl-works-over-wet-string.html
3•Tiberium•48m ago•1 comments

AI Adoption Rates by Country

https://www.visualcapitalist.com/ai-adoption-rates-by-country/
2•divbzero•51m ago•1 comments

Managing High Performers

https://twitter.com/staysaasy/status/2015026826217742509
1•thisismytest•55m ago•1 comments

The case against ultrasonic humidifiers

https://dynomight.net/humidifiers/
6•arbuge•58m ago•2 comments

Unidentified Aerial Phenomena Near Nuclear Facilities – Enigma Labs

https://enigmalabs.io/collection/a7111520-9526-4939-9a66-d225db45ba80
1•lukeplato•59m ago•0 comments

BookLore: A self-hosted, multi-user digital library

https://github.com/booklore-app/booklore
4•thunderbong•1h ago•0 comments

Second Win11 emergency out of band update to address disastrous Patch Tuesday

https://www.windowscentral.com/microsoft/windows-11/windows-11-second-emergency-out-of-band-updat...
23•speckx•1h ago•3 comments

Inside Anduril's Bolt-M Kamikaze Drone Program

https://www.twz.com/uncategorized/inside-andurils-bolt-m-kamikaze-drone-program
3•breve•1h ago•2 comments

Bluesky CEO Jay Graber: Banning under-16s won't fix social media

https://www.ft.com/content/c6980fc4-97b6-40bf-a3d0-c40c3a6cac56
3•sealeck•1h ago•2 comments

Enterprises are eyeing End-To-End AI gateways

https://llmgateway.io/blog/unified-ai-gateway
2•steebchen•1h ago•1 comments

Show HN: React-meta-SEO – Rebuilding SEO for React 19 (3KB, no providers)

https://www.npmjs.com/package/react-meta-seo
2•Hacakthon•1h ago•0 comments

Shared Garden

https://sharedgarden.io/
2•lucaspauker•1h ago•0 comments

Google's AI Detection Tool Can't Decide If Its Own AI Doctored Photo of Activist

https://theintercept.com/2026/01/24/googles-ai-detection-white-house-synthid-gemini/
1•Qem•1h ago•0 comments

Show HN: PicoFlow – a minimal Python workflow for LLM agents

2•shijizhi_1919•1h ago•0 comments