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btoa('café') gives you the wrong bytes, and nothing tells you
1+ week, 5+ hour ago (650+ words) Run this in your browser console: Now encode the same word as UTF-8 first: Same word, two different answers. Both are valid base64. Neither one throws. Only the second is what everyone else means by "café in base64". btoa and atob are…...
UpdateKeysLimitReset - OpenRouter | Documentation
1+ week, 1+ day ago (21+ words) UpdateKeysLimitReset OpenRouter Fetch the complete documentation index at: /docs/llms.txt Use this file to discover all available pages before exploring further....
UHF RFID vs. Bluetooth: Which Wins at Mass Scale?
2+ week, 2+ hour ago (1559+ words) The competition between passive UHF RFID and battery-free Bluetooth centers on their ability to economically deliver rich physical-world data at scale, with infrastructure efficiency and user freedom determining future dominance. Essential insights from UHF RFID vs. Battery-Free Bluetooth: What Really…...
Comparing prices across retailers is a unit-normalization problem, not a scraping problem
2+ week, 5+ day ago (541+ words) Disclosure: I'm the founder of Popgot, which I use as the example below. The problem and the approach apply regardless of what you build on. Every price comparison project I've seen starts the same way: scrape a bunch of retailers,…...
mSpy Wifi Network Monitor for Beginners: Where to Start
3+ week, 21+ hour ago (31+ words) When I first heard the term “WiFi network monitor,” I imagined something incredibly complex, almost like a hacker’s tool. In its simplest …...
Hoisting
4+ week, 2+ day ago (208+ words) in JavaScript is the engine’s behavior of moving declarations to the top of their scope (global or local) before execution. Because of hoisting, you can reference functions or variables in your code before the lines where they are defined. 1.Function…...
Postgres RLS multi-tenancy: two traps that silently disable your policies
1+ mon, 2+ week ago (767+ words) Most multi-tenant applications keep tenants apart with one line of code, repeated forever: That line is load-bearing. Forget it once — in a new endpoint, in a join, in a hotfix at 2am, in a report someone added last quarter — and one…...
QT6 Brings BASIC To The Web Browser, Or Your Computer
1+ mon, 3+ week ago (37+ words) In the old days, you either swore by BASIC or you swore at it -- but just about everybody got their start on the educational language. Nowadays, the kids are learning Python, but there's a case to be......
The Supabase RLS gotcha nobody warns you about: infinite recursion in multi-tenant policies
1+ mon, 4+ week ago (200+ words) You're building teams/workspaces on Supabase. A row belongs to a workspace, and a user can touch it if they're a member. Simple enough — until your policies start throwing infinite recursion and you have no idea why. Here's the trap…...
nvm loses your global CLIs every time you switch. So I fixed it.
1+ mon, 4+ week ago (821+ words) Every nvm user knows this loop. You install a CLI globally, it works, then a week later nvm use 18 for some legacy project and the command is gone. Not broken — gone. command not found. Because nvm doesn't have global packages;…...