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Building an AI agent for spreadsheets – 4 months of learnings

https://github.com/witanlabs/research-log
1•samuelstros•40s ago•0 comments

Show HN: Memobase – Universal memory that works across all your AI tools

https://memobase.ai/
1•chsitter•2m ago•0 comments

Free Exploit Development CTFs and Walkthroughs Based on Real CVEs

https://zeropath.com/blog/zeropath-exploit-development-ctfs
2•NonStopOyster•5m ago•1 comments

You're paying AI companies a monthly subscription fee to be fingerprinted

https://infosec.exchange/@k3ym0/116161635202253362
2•u1hcw9nx•6m ago•0 comments

I Audited the Privacy of Popular Free Dev Tools, the Results Are Terrifying

https://www.toolbox-kit.com/blog/i-audited-popular-dev-tools-privacy-results-are-scary
1•WaitWaitWha•6m ago•0 comments

XPize (2015)

https://web.archive.org/web/20150216030240/http://www.xpize.net/screenshots.php
1•1970-01-01•6m ago•0 comments

The Window Chrome of Our Discontent

https://pxlnv.com/blog/window-chrome-of-our-discontent/
1•miniBill•7m ago•0 comments

Show HN: I built a tool that rewrites angry emails into polite professional ones

https://angrytopolite.com
1•crawde•9m ago•0 comments

JSON Documents Performance, Storage and Search: MongoDB vs. PostgreSQL

https://binaryigor.com/json-documents-mongodb-vs-postgresql.html
1•birdculture•10m ago•0 comments

Pawno: Terminal Pleasure

https://philbooth.me/blog/pawno-terminal-pleasure
1•speckx•12m ago•0 comments

China leads scientific trends; the West launches new ones

https://arxiv.org/abs/2603.01117
1•bikenaga•13m ago•1 comments

Rage Against the Machine

https://ericfriese.substack.com/p/rage-against-the-machine
1•weagle05•13m ago•0 comments

Ask HN: How do you stay focused during deep work?

13•rustcore•13m ago•0 comments

Review: Mercury Personal Banking

https://taylor.town/mercury-000
1•surprisetalk•14m ago•0 comments

Piku – About the Tiniest PaaS

https://github.com/piku/piku
2•kristianpaul•14m ago•0 comments

Arti 2.1.0 released: Relay and RPC development

https://blog.torproject.org/arti_2_1_0_released/
1•mikece•15m ago•0 comments

Rust zero-cost abstractions vs. SIMD

https://turbopuffer.com/blog/zero-cost
1•Sirupsen•17m ago•0 comments

A US Government iPhone-Hacking Toolkit Is Now in Foreign Spy and Criminal Hands

https://www.wired.com/story/coruna-iphone-hacking-toolkit-us-government/
4•alwillis•18m ago•0 comments

I Chose Electron over Native (and I'd Do It Again)

https://syntax.fm/show/983/why-i-chose-electron-over-native-and-i-d-do-it-again
3•kethinov•19m ago•0 comments

Controlling the human connectome with spatially diffuse input signals

https://www.nature.com/articles/s42003-026-09560-8
1•bookofjoe•19m ago•0 comments

Hours of Darkness: The Ongoing Regime-Imposed Internet Blackout

https://twitter.com/netblocks/status/2028913162255282264
1•us321•21m ago•0 comments

Norway explains formula behind sustained success at Winter Olympics

https://www.japantimes.co.jp/olympics/2026/02/17/norway-keys-winter-success/
1•PaulHoule•21m ago•0 comments

Show HN: SQL-pipe – Query CSV streams with SQLite syntax (written in Zig)

https://github.com/vmvarela/sql-pipe
1•vmvarela•21m ago•2 comments

Self-Hosted Software List

https://hostedsoftware.org/
4•selfhostedsoft•23m ago•1 comments

Supported browser for Apple devices, derived from Atari TOS 1999

https://en.wikipedia.org/wiki/ICab
1•muzzy19•23m ago•1 comments

Show HN: Spanish Words, spaced repetition vocabulary app for frequent words

https://www.1000spanishwords.app/
1•bbmaxwell•26m ago•0 comments

Ask Your AI to Fill This

https://potomushto.com/2026/tell-your-ai/
1•speckx•28m ago•0 comments

A better way to manage environment variables

https://github.com/humblepenguinn/envio
1•doomlazer•28m ago•1 comments

Show HN: SEO That Fixes Itself

https://www.howtoseo.ai/
1•santiviquez•29m ago•0 comments

OpenAI teases GPT-5.4: "sooner than you Think."

https://twitter.com/OpenAI/status/2028909019977703752
2•modeless•30m ago•1 comments
Open in hackernews

Ask HN: Why is big O often used in CS when omega or theta should be used?

2•amichail•10mo ago
Do most people not know about omega and theta or perhaps they intentionally misuse asymptotic notation?

Comments

adrianN•10mo ago
Finding lower bounds is generally more difficult.
amichail•10mo ago
People often use big O notation in all cases including for lower bounds.
adrianN•10mo ago
BigO for lower bounds is plain wrong
numpad0•10mo ago
Those aren't in the ASCII table.
compressedgas•10mo ago
I've found some people on a well known QA site to be so strict with big-O notation that I don't use it anymore and instead only refer to constant, linear, quadratic time and so on. Even when O(1), O(n), O(n^2) would be actually easier to write even if they are technically wrong.