Oleksii Trekhleb

#Javascript #Algorithms repository is over 50K⭐️now. I've launched it as a #technical #interview preparation playground for myself and I wouldn't even dare to think that it would be so warmly embraced by community. I'm shocked and I'm glad. 👉🏻github.com/trekhleb/javas…

I was a bit apprehensive about using --dangerously-skip-permissions in Claude Code, so I put it in a Docker sandbox over the weekend. Mounts only the current project folder, nothing else. github.com/trekhleb/claud… #claude #claudecode #docker

Keeping content like this on a short “leash”, without letting it cross the line, across 700+ cities and counties turned out to be a bit problematic. So, for now, you can check out a more restrained and data-driven version of the descriptions using the link above.

...and “the ultimate California contradiction: a place so gorgeous it almost makes you forget you're one medical emergency away from financial ruin” was both “fun” and “not really fun”, since it may not be that far from reality for many people.

Data-driven summaries for California cities and counties CaliVibe has collected a decent amount of data, so I was curious to use Claude to generate a summary for each city/county Example for Half Moon Bay: trekhleb.dev/cali-vibe/city… #california #maps #ai #claude #vibecoding

"To LLM" is the new "To Google"

California monthly sunshine hours map ☀️ trekhleb.dev/cali-vibe/ #california #data #map #visualization

Since more metrics have been added to CaliVibe, the next step was adding the ability to compare California cities and counties based on them. Again, 100% of the code was written by Claude. trekhleb.dev/cali-vibe/?com… #california #map #vibecoding #claude

@claudeai @GeminiApp Added SacRT, Gold Runner, MetroLink, SD Trolley, Sprinter, Coaster, Pacific Surfliner, SMART, LA Metro Rail, Muni Metro, VTA, and Capito Corridor #california #transit #map

@claudeai @GeminiApp Added BART lines to the map: trekhleb.dev/cali-vibe/?tra… More transportation systems are coming... #california #Transportation #BART #map #vibecoding

Vibe-coded CaliVibe for fun — an interactive map to explore California counties and cities through population, crime stats, temperature patterns, 3D terrain views, etc. ~98% of the code was written by @claudeai with a few sprinkles from @GeminiApp trekhleb.dev/cali-vibe/

The “98% of JS code generated by AI” metric doesn’t mean the project was low effort. It means that 100% of the code was written in English by a human (not 2%)

@nolikenet Do I understand correctly that the suggested frameworks assumes: “good” - is whatever helps a person “to survive”?

@trekhleb no, if we hard consider "good" as objective thing to start with. I propose not to go this way at the start, but try to come to the conclusion if "good" can be objective. Example: "kill human" - bad. "kill occupier" - good. Seems like it's a state related to the entity

Morality seems to be objective #observation-om3" target="_blank" rel="nofollow noopener">trekhleb.dev/blog/2023/obse…

@nolikenet Does this framework address the issue of two conflicting “goods”?

@trekhleb "These ultimate concepts are established neither by human beings nor by a majority, and nor by surrounding culture" What if we define good as something which helps you and your family / community survive. And we define bad as everything which is opposite.

My books on #JavaScript and #TypeScript are free to read online: – Exploring JavaScript (ES2025 edition) – Deep JavaScript – Exploring TypeScript (TS 5.8 edition) – Shell scripting with Node.js Retweets appreciated! exploringjs.com

“Let’s rewrite it from scratch!”

Played around with visualizing the geographical distribution of the top tech jobs data: jobs-radar.com #tech #jobs on the #map

@UriGoldshtein Thanks for the article review @UriGoldshtein 👍🏻 Good points and clarifications. I've updated the original article and added your input in the "UPD" section here #upd-2025-12-18" target="_blank" rel="nofollow noopener">trekhleb.dev/blog/2024/api-…