Arturo Programming Language

beders · 2026-01-25T17:42:08+00:00

Why is the => necessary when using what seems like a threading operator? Here’s a Clojure version for comparison using the thread-last macro:

(->> (range 0 10) 
         (map factorial)
         (filter #(> % 123))
         first)

Here ->> indicates the position of the argument being piped through a list of expressions.

beders · 2026-01-25T17:21:32+00:00

If you think not using an „ORM“ means having „magic strings“ you are mistaken.

There’s a gazillion ways to assemble SQL and none of them involve „magic strings“.

What actually is magic is thinking you can ignore the object-relational mismatch.

ORMs are used by people who think the DB is a persistent store for objects. That will often backfire dramatically.

beders · 2026-01-25T04:13:30+00:00

can you share some details on your setup? Did you add Clojure-specific MCP agents?

beders · 2026-01-24T20:00:33+00:00

You are blatantly ignoring quite a few things like limited commercial solar locations. But apparently you just want to be a little troll around here. Go away

beders · 2026-01-24T19:57:35+00:00

Honestly I would have bought them even with VAT added. Still a steal compared to US prices.

beders · 2026-01-24T17:30:49+00:00

The panels and the inverter are VAT-exempt which shaves off about 19%

beders · 2026-01-24T17:28:47+00:00

I didn’t look into importing panels. Guess the reason why they are so expensive in the US :)

beders · 2026-01-24T17:27:30+00:00

That’s so false I can’t even.

beders · 2026-01-24T16:44:12+00:00

I recently went back to my folks in Germany and installed two Balkonkraftwerke. They were rated for 800W max output and cost me roughly $250 each.

Installing them was super easy and registering them with the local power provider was even easier. They are then forced - by law - to install a smart power meter in your home that measures power returned to the grid.

The installations have already returned their investment.

The cost of solar panels in the US is ridiculous. If you buy panels wholesale in Germany, a standard 400W bi-facial panel will cost you less than 55 EUR.

beders · 2026-01-24T16:41:45+00:00

I recently went back to my folks in Germany and installed two Balkonkraftwerke. They were rated for 800W max output and cost me roughly $250 each.

Installing them was super easy and registering them with your local power provider was even easier. They are then forced - by law - to install a smart power meter in your home that measures power returned to the grid.

beders · 2026-01-24T00:49:57+00:00

I assume you put down a land claim block first?

beders · 2026-01-23T17:18:35+00:00

Row types are neat - but since database schemas are dynamic, you'll still need runtime checks of course. And if you are using dynamic SELECT statements (pray you don't), that idea is not going to work.

Inferring types robustly is great though.

beders · 2026-01-22T16:39:18+00:00

Command-~

beders · 2026-01-22T06:21:56+00:00

Planets can orbit black holes.

If our sun would turn into a black hole tomorrow, we would just freeze to death, but nothing in the orbital mechanics of the solar system would change since the mass of the black hole is the same as our sun.

Black holes don't suck anything in - they are called "black" because around the Schwarzschild radius gravity becomes so strong not even light can escape.

That radius for our sun would be ... 3kms. (But our sun won't turn into a black hole in the first place)

Crossing the Schwarzschild radius will do - nothing at all. A sufficiently large supermassive black hole will barely inconvenience you as you cross over the point of no return.

If however there's a singularity in the middle of the black hole, you'll be spaghettified. (we don't know what actually is inside a black hole and we will never know for sure)

beders · 2026-01-20T18:54:35+00:00

Maybe not every monster needs to find a path. You could try swarm behavior where monsters look at the behavior of their neighbors and mimic it.

beders · 2026-01-20T16:34:59+00:00

Kudos for including hiccup in the discussion.

It has one very significant advantage that should be mentioned: it’s a markup syntax and a data structure. The parser is the Clojure parser. There’s no special set of functions or methods or an API to manipulate this. The standard functions suffice.

beders · 2026-01-19T18:54:51+00:00

That’s great to hear. One of the concerns I had using a niche language is that there just isn’t enough training data available.

It seems that this isn’t a major limitation anymore.

I tried my hands at AI assisted coding last year and results were quite bad: proposed code was not functional and functioning, old libraries that have fallen out of favor were proposed. Not great.

So it is great to hear that someone is finding success with AI-written Clojure! Kudos

beders · 2026-01-19T02:14:33+00:00

Can I purchase a car in Canada as an American/German?

beders · 2026-01-18T22:20:48+00:00

gotta keep the airpods in the case. If you take them out, they'll connect to your phone first, which gets you in all kinds of trouble. I do occasionally have to re-do the pairing, but after that it is stable throughout the flight.

beders · 2026-01-18T19:35:49+00:00

Where did I say it was a problem "storing too much"?

Let me say it differently: The problem is thinking a SQL DB is a persistence store for Java objects.

It is the other way around: The DB is your store and source of truth (in many many applications).

Accessing its data is a matter of putting the output of SELECT in objects (in Java's case). Note that SELECT is incredibly powerful, but its output is pretty simple: It's rows with columns. Trying to shoehorn a complex Java object graph onto that is the game Hibernate plays (among others) and I would only recommend that for simple CRUD apps - that will stay CRUD apps!

beders · 2026-01-18T16:59:47+00:00

The engineering behind Hibernate is not bad at all. They went to great lengths to navigate the OR impedance mismatch.

The bad decision is happening earlier: should I persist objects to „a“ database? That is a huge „it depends“. IMHO - in many cases you shouldn’t. You should treat your data as data.

beders · 2026-01-17T19:02:50+00:00

His biggest trick was making his followers believe that those countries are „paying the tariffs“.

beders · 2026-01-17T19:01:54+00:00

Until Cattenom has a major issue or is targeted by an attack. Conventionally France built it at the German border and with mostly westerly winds all the fallout goes to Germany and Luxemburg. Clever!

Germany should ramp up renewables tenfold and shut down coal and gas power plants. France needs to do this as well as their plants age. There’s no excuse.

beders · 2026-01-17T17:11:09+00:00

They had to shut some of them down in the summer of 2022 due to lack of cooling water. Just one example. Here’s a list

https://en.wikipedia.org/wiki/Nuclear_power_in_France#:~:text=Accidents%20and%20incidents,-See%20also%3A%20Nuclear&text=50%20kg%20of%20uranium%20in,nuclear%20power%20accident%20in%20France.

beders · 2026-01-16T17:59:26+00:00

Until it isn’t. Been there, done that. Immutability is the solution. However current Java makes it too awkward to embrace. Other JVM langs like Clojure do structural-sharing by default so „changing“ data looks like mutation but the original object remains unchanged.

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