HN user

cdelsolar

1,545 karma

Former Leftronic (YC) CTO and tournament Scrabble player. Currently CTO of another cool startup in the dev tools space.

https://cesardelsolar.com

https://codecomet.io (startup)

https://woogles.io (non-profit I cofounded)

Posts20
Comments981
View on HN
www.cesardelsolar.com 1y ago

The first CNN for playing Scrabble – a game of imperfect information

cdelsolar
2pts0
cesardelsolar.com 3y ago

Exhaustively solving Scrabble endgames using chess programming techniques

cdelsolar
1pts0
cesardelsolar.com 4y ago

Profiling a Go server while it is running in production

cdelsolar
1pts0
medium.com 4y ago

Scrabble is nowhere close to a solved game

cdelsolar
6pts5
woogles.io 5y ago

Show HN: Woogles.io – A Word Game Platform

cdelsolar
1pts3
medium.com 6y ago

Using NATS to build a scalable WebSocket server

cdelsolar
6pts0
medium.com 7y ago

Moving my side project to Kubernetes, a year and a half later

cdelsolar
2pts0
medium.com 9y ago

Lessons learned from moving my side project to Kubernetes

cdelsolar
2pts0
scrabbletvlive.com 10y ago

That One Time I Had Dinner with Nigel Richards

cdelsolar
1pts0
medium.com 11y ago

Breaking the Zyzzyva encryption

cdelsolar
127pts42
www.leftronic.com 11y ago

Adding Multiuser to a Single-User Web App

cdelsolar
1pts0
venturebeat.com 11y ago

Appdirect Buys Business Analytics Platform Leftronic (YC S10)

cdelsolar
4pts1
www.leftronic.com 12y ago

A Valentine's Day Dashboard

cdelsolar
1pts0
www.leftronic.com 12y ago

Get Email Alerts From Your Important Web Services

cdelsolar
1pts0
www.leftronic.com 12y ago

A Super Bowl trendboard

cdelsolar
1pts0
www.leftronic.com 12y ago

The five most "hair-pulling" APIs

cdelsolar
3pts0
www.leftronic.com 12y ago

Is there a good reason to use JSON-RPC?

cdelsolar
1pts0
techcrunch.com 14y ago

Leftronic launches on Techcrunch

cdelsolar
9pts1
blog.leftronic.com 14y ago

Show HN: Leftronic goes true Real-Time with Node.js and Redis Pub/Sub

cdelsolar
13pts0
beta.leftronic.com 14y ago

Show HN: Easily monitor your Google Analytics metrics with Leftronic

cdelsolar
49pts15

The heck? It does all that rendering for a tiny fraction of the total amount of time that the TUI is running. The streaming is IO bound, there’s no way that it’s outputting nearly enough text to tax the CPU that much.

Grok 4.5 13 days ago

fwiw i just asked grok about the 2020 election and it asserted with citations that there is no evidence that it was stolen.

Grok 4.5 13 days ago

you think he just "put his arm at that angle" accidentally? like it was a spell?

I thought coding agents were probably BS and then I asked Cline to build me a test app to do something (I forgot what, something not that simple) and it built an entire working app. This was before Claude Code which was another step function improvement.

Why Janet? (2023) 2 months ago

this is incredibly smug, but fun to read :) I briefly "got" Clojure but forgot again. Maybe I'll give this Janet thing a try.

I am not estimating anything. This is my own evidence from my own projects. I have deployed gigantic features this past year, each of which would have taken me the whole year to write.

Tangentially related but I’ve been using Claude to practice interviewing on system design problems, and it’s actually pretty great. But even when it likes my answers it always finds something, however small, to push on. Once it actually was completely wrong and admitted it after I had it realize. So maybe you have to prime it to be contrary and not agree with everything you say, putting it in the role of a tough interviewer seems to do this implicitly.

Disagree, if you miss the error handling the code won’t compile (unless you return _, which should be easy to spot)

The magic comment stuff is very much “do it once” and it’s done (for example if using go generate).

studies suggest nothing. i've released a massive number of features in the last year for several projects that i estimate would have taken me multiple years to put together in a much more mentally exhausting way.

Lunar Flyby 4 months ago

My favorite too.. one of the most awe-inspiring pictures I've ever seen.