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Show HN: Kappal – CLI to Run Docker Compose YML on Kubernetes for Local Dev

https://github.com/sandys/kappal
6•sandGorgon•2d ago•2 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
247•isitcontent•17h ago•27 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
349•vecti•19h ago•157 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
315•eljojo•20h ago•194 comments

Show HN: MCP App to play backgammon with your LLM

https://github.com/sam-mfb/backgammon-mcp
2•sam256•1h ago•1 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

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77•phreda4•16h ago•14 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
93•antves•1d ago•70 comments

Show HN: I'm 75, building an OSS Virtual Protest Protocol for digital activism

https://github.com/voice-of-japan/Virtual-Protest-Protocol/blob/main/README.md
5•sakanakana00•2h ago•1 comments

Show HN: I built Divvy to split restaurant bills from a photo

https://divvyai.app/
3•pieterdy•2h ago•0 comments

Show HN: ARM64 Android Dev Kit

https://github.com/denuoweb/ARM64-ADK
17•denuoweb•2d ago•2 comments

Show HN: BioTradingArena – Benchmark for LLMs to predict biotech stock movements

https://www.biotradingarena.com/hn
26•dchu17•21h ago•12 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
49•nwparker•1d ago•11 comments

Show HN: Artifact Keeper – Open-Source Artifactory/Nexus Alternative in Rust

https://github.com/artifact-keeper
152•bsgeraci•1d ago•64 comments

Show HN: I Hacked My Family's Meal Planning with an App

https://mealjar.app
2•melvinzammit•4h ago•0 comments

Show HN: I built a free UCP checker – see if AI agents can find your store

https://ucphub.ai/ucp-store-check/
2•vladeta•5h ago•2 comments

Show HN: Gigacode – Use OpenCode's UI with Claude Code/Codex/Amp

https://github.com/rivet-dev/sandbox-agent/tree/main/gigacode
19•NathanFlurry•1d ago•9 comments

Show HN: Compile-Time Vibe Coding

https://github.com/Michael-JB/vibecode
10•michaelchicory•6h ago•1 comments

Show HN: Slop News – HN front page now, but it's all slop

https://dosaygo-studio.github.io/hn-front-page-2035/slop-news
15•keepamovin•7h ago•5 comments

Show HN: Daily-updated database of malicious browser extensions

https://github.com/toborrm9/malicious_extension_sentry
14•toborrm9•22h ago•7 comments

Show HN: Micropolis/SimCity Clone in Emacs Lisp

https://github.com/vkazanov/elcity
172•vkazanov•2d ago•49 comments

Show HN: Horizons – OSS agent execution engine

https://github.com/synth-laboratories/Horizons
23•JoshPurtell•1d ago•5 comments

Show HN: Falcon's Eye (isometric NetHack) running in the browser via WebAssembly

https://rahuljaguste.github.io/Nethack_Falcons_Eye/
5•rahuljaguste•16h ago•1 comments

Show HN: Fitspire – a simple 5-minute workout app for busy people (iOS)

https://apps.apple.com/us/app/fitspire-5-minute-workout/id6758784938
2•devavinoth12•10h ago•0 comments

Show HN: Local task classifier and dispatcher on RTX 3080

https://github.com/resilientworkflowsentinel/resilient-workflow-sentinel
25•Shubham_Amb•1d ago•2 comments

Show HN: I built a RAG engine to search Singaporean laws

https://github.com/adityaprasad-sudo/Explore-Singapore
4•ambitious_potat•11h ago•4 comments

Show HN: Sem – Semantic diffs and patches for Git

https://ataraxy-labs.github.io/sem/
2•rs545837•11h ago•1 comments

Show HN: A password system with no database, no sync, and nothing to breach

https://bastion-enclave.vercel.app
12•KevinChasse•22h ago•16 comments

Show HN: GitClaw – An AI assistant that runs in GitHub Actions

https://github.com/SawyerHood/gitclaw
10•sawyerjhood•23h ago•0 comments

Show HN: FastLog: 1.4 GB/s text file analyzer with AVX2 SIMD

https://github.com/AGDNoob/FastLog
5•AGDNoob•13h ago•1 comments

Show HN: Craftplan – I built my wife a production management tool for her bakery

https://github.com/puemos/craftplan
568•deofoo•5d ago•166 comments
Open in hackernews

Show HN: Arrayops – 100x faster Python array operations with Rust

https://github.com/eddiethedean/arrayops
3•EddieDean•1mo ago

Comments

EddieDean•1mo ago
Author here. I've been working on optimizing Python data processing and created arrayops, a library that accelerates Python's built-in array.array type using Rust.

The Problem: Python's array.array is memory-efficient but slow. NumPy solves this but is heavyweight and often overkill for 1D data.

The Solution: arrayops provides fast operations directly on array.array: - 10-100x faster than pure Python - Zero dependencies - Works with array.array, numpy (1D), memoryview, Arrow

Performance (1M int32 array): - sum(): 50ms → 0.5ms (100x faster) - scale(): 80ms → 1.5ms (50x faster) - All operations use zero-copy buffer access

Key Features: - Production ready (1.0.0, 100% test coverage) - MIT licensed - Full type hints and documentation

GitHub: https://github.com/eddiethedean/arrayops Docs: https://arrayops.readthedocs.io PyPI: https://pypi.org/project/arrayops/

I'd love feedback, especially on: - Performance optimization approaches - API design decisions - Use cases I might have missed

Built with PyO3 (Rust-Python interop) and maturin (packaging).

dmarwicke•1mo ago
does this work with multidimensional or just 1D? polars had the same limitation, ended up just sticking with numpy
EddieDean•1mo ago
Just 1D. Stick with numpy.