coreyp_1

Joined 11 years ago

Karma
2,812
Submissions
829
Member since
Jan 18
LinkedIn: https://www.linkedin.com/in/corey-pennycuff-aa7a79202/

BMus in Piano Performance, Midwestern State University

MS in Computer Science, Midwestern State University

PhD in Computer Science, University of Notre Dame

My YouTube channel where I post videos about CS: https://www.youtube.com/user/coreyp1

The playlist where I create a programming language from scratch (watch video #100 to get an overview of the project): https://www.youtube.com/playlist?list=PLZqirAnnqaCZ8lT8w7p2PUB7tqrId7d89

My blog that I haven't updaded in forever: https://cscrunch.com

View on Hacker News

Recent submissions

Comment · 2 days ago
Quite beautiful.
Comment · 10 days ago
I can't believe that he was doing this using Codex!

Reason: Codex shut me down when trying to find a stack overflow in my own code, saying that I had to be an authorized security researcher.

It probably triggered on the word "Java" in my code. But I wasn't working on Java at all... It's a personal regex library written in *C*, and I was working on a Java dialect (I currently support 12 dialects... for fun. Stop judging me.)

I had to go back to Claude...

Comment · 2 months ago
The scary thing about IoT is that it's impossible to know what is being transmitted back to servers once a device is connected to an outside network (unless, of course, the network protocol doesn't allow external egress, such as Zigbee).

If I connect my washing machine to the internet so that I can use a stupid, proprietary app, how do I know what telemetry it's also sending?

Does it capture MAC addresses, SSIDs, bluetooth identifier, etc? That information could be used to identify who most frequently uses the device, personal schedules, friends/acquaintances that stop by, and a whole host of other inferences. When combined with other private corporate data sources, it may reveal things about me that I don't want them to know.

I don't want them to know to target me for advertising. I don't want them to have an economic profile so that they can extract as much money out of me as possible via surveillance pricing. I don't want service people to decide to charge me more based on how desperate I am to get the thing fixed.

I don't trust anyone that says, "I'll do that for you. No, I won't let you do it on your own... you have to go through me (my app)." Companies do not have my interest in mind... they are only trying to extract more money out of me.

Give me Zigbee or nothing!

Comment · 2 months ago
I use Home Assistant to gather info about my house. I use Zigbee devices exclusively (with the exception of a Z-wave device that was not available in a Zigbee flavor). Why? Because that protocol allows me to talk to the device, but the device itself can't phone home to something outside of my network. I, however, can still talk to the device via my personal system. From thermostats to switches to various monitors and sensors, I don't need someone to spy on me in order for me to have a smart home.

I will not use a device's proprietary app. I won't connect it to the internet. I don't want appliances to phone home. I don't want them to help a company build profiles about me, my habits, etc. It's none of their business, and I don't trust them.

I will never use an app to operate my washing machine. I would love to be able to track the information (current status, total time, frequency of use, etc.) but not if it has to phone home to do it. It would be easy to expose this via a Zigbee interface, but manufacturers don't want me to bypass them. They want to spy on me from now on.

Comment · 2 months ago
I actually wrote my own scripting language (Tang... complete with JIT compilation on x86_64 with a bytecode fallback) so that I could have flexible, familiar syntax (cross of C++ and Python) but without the danger of random imports. I built it for my CMS. I just need to get back to it. Again, I may invoke LLMs this time, as all of my previous work was done the old-fashioned way.
Comment · 2 months ago
I hate modern web development.

I was a Drupal developer back in the day, and I loved its templating system (the fact that HTML was assembled on the back end) and it was so powerful! It allowed for so much customization without leaking the internals of your representation to the front end, which was much more secure, IMO. Now, you have to give your templating logic to the client and potentially expose parts of your system to the end user.

Then, along comes MVC, and everyone drank the Kool-Aid, despite the fact that nobody ever actually implemented MVC purely, because it wasn't designed for the web. It wasn't designed for general systems, either. You may say, "you're wrong! You can adapt any system to MVC!", and I would respond that that is not what I mean. I mean that it is designed for custom applications (what you are referring to), and not frameworks which are for general use. You might claim that it is a framework, and I would point out that the nuance is in where the customization can be controlled and distributed. (Side note: I know MVC has been around a long time, but so have I and I remember when ajax was the hot new toy. MVC took a long time to gain traction and to infiltrate everything... and now we have ultra slow websites with tens of megabytes to download before they can even show a blank page. I stand by my statements and distain for MVC.)

I was building my own CMS that went back to server-side rendering, but I stopped because I just didn't have time to work on it. This may inspire me to do it again, only this time I'll use an LLM to get me through it faster.

Comment · 2 months ago
To the author:

I'm sorry that your post is flagged and now mostly hidden unless someone actively tries to read it.

I'm actually curious about a few things.

1. How much total did you spend (and with which provider)? I'm curious because I've seen a lot of people do experiments like this, and I see that you gave an amount for how much you spent to get a correct answer, but I would also love to know how much it cost to do it all in the first place. I'm assuming that you had to re-run attempts, failed runs, etc. I think there's value in understanding the cost to get the results throughout development, not just the final result.

In other words, I think that many people don't appreciate how much work/$$$ it takes to develop something like this... they only look at the final result. I want to better appreciate it myself.

2. How long does it take to run? You may have mentioned it in the writeup, but I don't recall.

3. What was your motivation? General curiosity, or are you working as part of a larger picture?

4. Are you intending to publish the results beyond what you've done here?

Comment · 2 months ago
Why was the comment from the Author flagged? I found it helpful.

Is it because it's a summary? Because I also found it helpful as I went through the actual link.

Is it because of the low Karma? Because mine's not that high, either, and it seems quite difficult to get people to upvote you here unless you are a sycophant for their particular political or technology bias.

So, what's the deal HN? Have we become elitists? I don't get it.

Comment · 2 months ago
Don't tell this person about translation plugins. They change everything! The end user never reads what the website actually served!
Comment · 2 months ago
Which part of the mobile software infrastructure are you referring to?

Do you mean, for example, Jellyfin, which reaches out to my home server and is for my personal use? Because that works.

Or do you mean why don't we just write our own apps which talk to our own infrastructure?

Or do you mean that it's just hard to have your own/personal infrastructure? Or that most apps don't support your own infrastructure?

Or are you referring to the fact that the mobile platforms lock down things such as push notifications so that it absoultely must go through them?

Can you be a bit more specific?

Comment · 3 months ago
3d print models, parametrically generated.

Blender can run Python... with the app open or headless.

My Blender skills are nigh useless. I know how to describe what I want mathematically with variables/constraints, but I don't know what magical incantation to use to make it appear in Blender... and don't get me started on the hotkeys!

About a year and a half ago, I started writing a script (by hand) to generate a non-trivial widget for personal use (a zigbee controller housing). I sketched my own pencil drawings and wrote about 900 lines of python. It was going really well for a few days, but then life got busy. The file was an experiment (it was named `temporary.py`!!!) that I decided didn't need to die. But I haven't touched it since.

Enter AI... This weekend, after not touching the project for 18 months, I used Cursor to convert my one messy file into a proper, multi-project mono repo for all of my 3d designs, abstract out common Blender commands, scaffold a proper structure for revisions, etc. Then, I was able to use Cursor to finish the design.

I love it! I'm still making my designs (believe me, these aren't 1-prompt creations) but I don't have to worry about the minutiae of Blender's interface and, most importantly, I can use its power.

Side point: I loved it when I could say something like: The body ellipse should have a base whose height is .5 of the body ellipse diameters is .5 the shadow of the body. Using a spline/bezier curve-like profile, it should rise from the floor plane, shrink to 1/3 the size of the body, then grow to meet the ellipse at 1/3 the height of the ellipse, at an angle matching the ellipse's tangent, and parallel to the floor. And it just worked! And I can change the proportions and regenerate the model whenever I want to tweak visual aesthetics.

I have a list of things that I've wanted to model, but the overhead of learning interfaces when I'm already insanely busy is, in a word, prohibitive. This frees me up to build what I can already see clearly in my head, and I love it!

Comment · 3 months ago
Dr. Thain is great!
Comment · 3 months ago
Very true. I suppose it's not worth it to me. I've never had an Instagram account, and never used Instagram itself.

I guess I don't need it in my life.

Comment · 3 months ago
>Stay away...

LOL Exactly!!!

I was only doing it because my family asked me to. Meta killed that, too, I guess.

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