corlinpalmer (u/corlinpalmer)

corlinpalmer commented on Ask HN: Who is hiring? (April 2025) · Posted by u/whoishiring

ParaFi Capital | Full-stack Engineer (senior lv) | San Diego | Hybrid | Full time

I'm hiring a full-stack engineer based in San Diego to join me at ParaFi Capital, a $1B+ leading investment firm in digital assets. We build sophisticated platforms powering trading, risk management, AI-driven portfolio management, and core infrastructure at the cutting edge of finance and crypto. If you're a hackathon pro, mathematically inclined, passionate about fintech, and energized by tackling challenging technical problems, reach out to me.

corlinpalmer commented on Show HN: Experiments in AI-generation of crosswords abstractnonsense.com/cros... · Posted by u/abstractbill

corlinpalmer · a year ago

Awesome! I have also dabbled in AI-generated crosswords, but I was more fascinated with the concept of generating the most efficient layout of an X-by-X grid from a given word set. It's a surprisingly difficult optimization problem because the combinatorics are insane. Here's an example output trying to find the most efficient layout of common Linux terminal commands:

    W   P     G   
    H I S T O R Y 
    E         O   
    R   T   Y U M 
  L E S S     P   
    I   O   C A T 
  U S E R A D D   
  L     T R   D C

Of course this is a pretty small grid and it gets more difficult with size. I've thought about making a competition from this sort of challenge. Would anyone be interested?

corlinpalmer commented on Rue de l'Avenir en.wikipedia.org/wiki/Rue... · Posted by u/benbreen

mherdeg · 2 years ago

Heinlein's "The Roads Must Roll" posits a network of very fast, very long moving walkways which could be used for mass transit (you'd ramp up speed on slower ones then hop over to a fast one). Wikipedia says that moving walkways had been in sf for decades by that point, but Heinlein also almost incidentally invents the Segway in the story -- just a little treat.

I love peoplemovers (like the Hong Kong Central-Mid Level escalators and the delightfully bouncy SFO walkways) and always wondered what would have to be different for us to get super-fast ones for transit.

In Boston, IMO they would be at least as good as the Green Line :)

corlinpalmer · 2 years ago

Moving walkways have a big power efficiency problem over a distance. While you can make a train track longer without decreasing the efficiency of the train, a moving walkway has to move that whole walkway. Can you imagine the friction on a 10 mile long moving walkway? You would need massive motors just to budge it.

corlinpalmer commented on The One Billion Row Challenge morling.dev/blog/one-bill... · Posted by u/madmax108

guss_bro · 2 years ago

The fastest java solution from the current leaderboard runs within 2.6 seconds in my brand new M3 Mac.

corlinpalmer · 2 years ago

Is that `./calculate_average_royvanrijn.sh`? It runs in 6.7s for me.

I would love it if you could run my solution and compare!

corlinpalmer commented on The One Billion Row Challenge morling.dev/blog/one-bill... · Posted by u/madmax108

dvko · 2 years ago

There’s an implementation in C which should run in well under 2 seconds on your M3.

https://github.com/dannyvankooten/1brc

corlinpalmer · 2 years ago

Under 2 seconds seems rather impossible on my machine since the disk maxes out at 5.1 GB/s. This one ran in 7.4s on my M3:

`bin/analyze measurements.txt 30.34s user 16.28s system 629% cpu 7.406 total`

corlinpalmer commented on The One Billion Row Challenge morling.dev/blog/one-bill... · Posted by u/madmax108

corlinpalmer · 2 years ago

Here's my implementation in Go, which runs in under 5 seconds. It doesn't use anything too obscure, only the built-in maps and no external libraries. It's also the fastest solution I've tested on my M3 Pro Mac. Eager to see what beats it!

https://gist.github.com/corlinp/176a97c58099bca36bcd5679e68f...

corlinpalmer commented on Billion-Dollar Crypto Loan Is Easy to Get, but Gone in a Flash wsj.com/articles/this-bil... · Posted by u/jkuria

ALittleLight · 4 years ago

If the hacker had not said the bit about donating to Ukraine, but instead just made the proposal "send me all the money" would he have committed any crime? It's not clear to me that, apart from lying, he really did anything you're not supposed to do.

If, analogously, my bank had a program where people could propose actions to the bank and vote on them by putting dollars in a "yes" or "No" jar - and I started a "give me the bank" proposal, took out a massive loan and won the vote... What have I done wrong?

corlinpalmer · 4 years ago

Yes, it would be theft because the usage was clearly outside of the intended use of the system. This sort of thing has been tested in the courts before and likely falls under the realm of any bug exploit.

For another example, let’s say you were an employee of a retailer with the power to set a discount on certain items. You suddenly set a 100% discount on every item in the store and then buy all the inventory for $0. Try explaining to the police that you were actually fully within your legal right to do that.

corlinpalmer commented on Short URLs: Why and How sive.rs/su... · Posted by u/stanislavb

Brajeshwar · 4 years ago

I own a 3-letter domain with a 2-letter TLD and still spells my family name. Many of my friends finds it cool when I share links via that domain. The links are indeed easy to remember but it comes at a higher yearly cost of renewal and I had forgotten to renew twice. Luckily, I was able to re-register them (nobody wants it, ;-)).

Example https://oin.am/rr/

corlinpalmer · 4 years ago

My name’s Corlin and I own corl.in

I sign up for accounts with emails like apple@corl.in and that lets me easily filter and organize my inbox.

But when I have to tell some customer service rep my email they get very confused.