Hacker News: cdiamand

New comment by cdiamand in "Show HN: Now I Get It – Translate scientific papers into interactive webpages"

cdiamand — Sat, 28 Feb 2026 15:54:15 +0000

Great work OP.

This is super helpful for visual learners and for starting to onboard one's mind into a new domain.

Excited to see where you take this.

Might be interesting to have options for converting Wikipedia pages or topic searches down the line.

New comment by cdiamand in "Introduction to PostgreSQL Indexes"

cdiamand — Sun, 25 Jan 2026 13:54:45 +0000

Linking to the postgresql docs since they are very well written and surprisingly enjoyable to read.

https://www.postgresql.org/docs/current/indexes-intro.html

New comment by cdiamand in "Show HN: I made a heatmap diff viewer for code reviews"

cdiamand — Thu, 30 Oct 2025 17:17:38 +0000

Thank you. This is a pretty cool feature that is just scratching the surface of a deep need, so keep at it.

Another perspective where this exact feature would be useful is in security review.

For example - there are many static security analyzers that look for patterns, and they're useful when you break a clearly predefined rule that is well known.

However, there are situations that static tools miss, but a highlight tool like this could help bring a reviewer's eyes to a high risk "area". I.e. scrutinize this code more because it deals with user input information and there is the chance of SQL injection here, etc.

I think that would be very useful as well.

New comment by cdiamand in "Show HN: I made a heatmap diff viewer for code reviews"

cdiamand — Thu, 30 Oct 2025 16:58:38 +0000

This is something I have found missing in my current workflow when reviewing PR's. Particularly in the age of large AI generated PR's.

I think most reviewers do this to some degree by looking at points of interest. It'd be cool if this could look at your prior reviews and try to learn your style.

Is this the correct commit to look at? https://github.com/manaflow-ai/cmux/commit/661ea617d7b1fd392...

New comment by cdiamand in "Tidewave Web: in-browser coding agent for Rails and Phoenix"

cdiamand — Wed, 20 Aug 2025 12:46:09 +0000

Looks pretty neat, and certainly addresses a missing element in the current AI workflow.

Question: What happens to our data - i.e. the code and context sent to your service?

New comment by cdiamand in "Show HN: I built website for sharing Drum Patterns"

cdiamand — Sun, 23 Mar 2025 16:33:52 +0000

Great stuff! You're missing a few bass drum notes in "When the levee breaks"

New comment by cdiamand in "$400M armored Tesla gov contract"

cdiamand — Thu, 13 Feb 2025 17:29:51 +0000

Is there a link to the contract somewhere?

New comment by cdiamand in "Show HN: Interactive systemd – a better way to work with systemd units"

cdiamand — Sat, 18 Jan 2025 16:53:11 +0000

The security section is good to see. Thanks for that!

New comment by cdiamand in "LLM based agents as Dungeon Masters"

cdiamand — Tue, 14 Jan 2025 16:24:03 +0000

I've used LLM's in this capacity, and it's awesome. It quickly becomes a crutch.

New comment by cdiamand in "LLM based agents as Dungeon Masters"

cdiamand — Tue, 14 Jan 2025 16:21:35 +0000

Last year, I built a DM for myself using the OpenAI api and an elevenLabs voice generator. I asked it set my character in Baldur's Gate, so it could pull upon the huge amount of DnD source material it had been trained on.

A few takeaways:

1. An LLM based DM can give the player essentially infinite richness and description on anything they ask for.

2. There is difficulty in setting the rules for the LLM to follow that match the DnD rulebook. But this is possible to solve for. Also, I found the LLM to be too pliable as a DM. I kept getting my way, or getting my hand held through scenarios. Maybe this is a feature?

3. My conversation quickly began to approach the context window for the LLM and some RAG engineering is very necessary to keep the LLM informed about the key parts of your history.

4. Most importantly, I found that I most enjoy the human connection that I get through DnD and an LLM with a voice doesn't really satisfy that.

New comment by cdiamand in "Mapping all 13.8 gigapixels of the Caves of Qud world map"

cdiamand — Fri, 13 Dec 2024 16:52:55 +0000

I come back to it from time to time and play for a week. It looks like it's been getting more accessible over time, with a new UI update having been rolled out recently.

There's definitely a certain mindset that helps make it more enjoyable. Imagination being key! From the technical side, the developers have peeled back the curtain on how they've created parts of the game:

https://www.youtube.com/watch?v=U03XXzcThGU&ab_channel=Logo%...

https://www.youtube.com/watch?v=jV-DZqdKlnE&ab_channel=GDC20...

New comment by cdiamand in "South Korean president declares martial law, parliament votes to lift it"

cdiamand — Tue, 03 Dec 2024 14:15:29 +0000

Can someone familiar with South Korean politics give us some context for what is happening here?

New comment by cdiamand in "Unreal 5.5 is a big deal [video]"

cdiamand — Mon, 18 Nov 2024 18:08:35 +0000

Blender has the famed Donut Tutorial, which is a blast if you're even slightly interested in learning about it.

Does Unreal have something similar?

New comment by cdiamand in "Japan's declining births on track to fall below 700k"

cdiamand — Wed, 06 Nov 2024 20:06:33 +0000

I think a cascading series of negative economic effects from less consumerism, leading to societally destabilizing conditions is a concern.

New comment by cdiamand in "Sci-fi books that you may never have heard of, but definitely should read"

cdiamand — Tue, 29 Oct 2024 13:04:53 +0000

Seconding the Book of the New Sun - It's great as a standalone, and the series is rewarding if you keep reading. It's an excellent 'puzzle' of a story as OP stated.

New comment by cdiamand in "Amplification of electromagnetic fields by a rotating body"

cdiamand — Thu, 17 Oct 2024 17:54:21 +0000

Could this be used as an engine of some kind? The spinny thing giving off EM waves and those waves are caught by something like a solar sail?

New comment by cdiamand in "RoRvsWild Ruby Documentation Theme"

cdiamand — Thu, 17 Oct 2024 17:42:46 +0000

This looks great. Nice job!

New comment by cdiamand in "What's New in Ruby on Rails 8"

cdiamand — Mon, 07 Oct 2024 16:14:17 +0000

Thanks for this. I've run into "giant cache" issues in the past in this exact use case. I'll give solid_cache a look.

New comment by cdiamand in "What's New in Ruby on Rails 8"

cdiamand — Mon, 07 Oct 2024 15:41:47 +0000

Anybody have any opinions on moving away from Redis for cables/caching/jobs?

I supposed it'd be nice to have one less thing to manage, but I'm wondering if there are any obvious gotchas to moving these features over to sqlite and postgresql.

New comment by cdiamand in "Dance training superior to physical exercise in inducing brain plasticity (2018)"

cdiamand — Thu, 03 Oct 2024 15:23:30 +0000

"Regarding cognition, both groups improved in attention and spatial memory, but no significant group differences emerged."

So, the dance group showed increase volume of brain matter. Is there a benefit to having the extra brain volume, even if it doesn't lead to improved cognition?

Is it possible that increased volume just helped them become better dancers?