mtdewcmu (u/mtdewcmu)

mtdewcmu commented on Common Lisp, ASDF, and Quicklisp: packaging explained cdegroot.com/programming/... · Posted by u/todsacerdoti

cvdub · 4 days ago

ASDF (Another System Definition Facility) is my all time favorite name for a piece of software. Descriptive, funny, and easy to type!

mtdewcmu · 3 days ago

Mine is GNU WoMan, an alternative to man.

https://www.gnu.org/software/emacs/manual/html_mono/woman.ht...

mtdewcmu commented on Common Lisp, ASDF, and Quicklisp: packaging explained cdegroot.com/programming/... · Posted by u/todsacerdoti

tmtvl · 3 days ago

> * What CL calls a system is roughly analogous to what most other languages call a package.*

Or a crate, or an artifact, or a module, or a gem, and there's probably other variations I can't remember off-hand.

> * What CL calls a package is what other languages call a namespace.*

Or a module, or a package, or... actually, I don't know what Perl or Ruby call it. I believe C calls it a header, but that's not quite the same thing as a package.

Turns out naming things is difficult (as well as cache invalidation, off-by-one errors concurrency, and).

mtdewcmu · 3 days ago

Racket has packages (1) that work quite well. Chicken Scheme has Eggs.

(1) https://docs.racket-lang.org/pkg/index.html

mtdewcmu commented on Microsoft Scales Back AI Goals Because Almost Nobody Is Using Copilot extremetech.com/computing... · Posted by u/mtdewcmu

wkat4242 · 4 days ago

It's a service they sell to eg DuckDuckGo and ecosia. I think the og bing is just there because they still think Google may fall out of favour one day. Oh and they offer a corp version spiced up with internal results from SharePoint.

mtdewcmu · 4 days ago

I think they also make money from people that don't know the difference and use it because, for instance, it's the default in Edge when you search from the URL bar.

mtdewcmu commented on Microsoft Scales Back AI Goals Because Almost Nobody Is Using Copilot extremetech.com/computing... · Posted by u/mtdewcmu

Havoc · 4 days ago

I use the employer paid enterprise versions. Works well…which you’d hope for the fancy version

The normal consumer accessible one in contrast routinely gives me broken incomplete output

Idk MS you’re not gonna win with a chatbot that doesn’t chat complete stuff

mtdewcmu · 4 days ago

This all reminds me of Bing. It already lost the technology race, but it serves MS's own interests to keep it around, apparently.

mtdewcmu commented on Common Lisp, ASDF, and Quicklisp: packaging explained cdegroot.com/programming/... · Posted by u/todsacerdoti

mtdewcmu · 4 days ago

I started learning Common Lisp, but ASDF and Quicklisp threw me off. I couldn't tell if you were supposed to choose one or the other or they were used together. This might revive my interest in Common Lisp if I get around to reading it. But in the meantime I drifted off to Racket, which is relatively well documented and has extensive libraries and really unique features.

mtdewcmu commented on Black Hole Puzzle johncarlosbaez.wordpress.... · Posted by u/besmirch

readyplayernull · a year ago

If I got BH theory right, each particle of the ship entering the event horizon will almost fully stop, while the next particles entering will still slightly move, compressing the whole ship into a thin shell or crust that, due to atomic mechanics, won't function as normal matter, so the crew won't know what happened to them. The entering ship will redshift until it dissapears. Their particles will "spacetime-travel" far far away into the future until the compressed crust bounces back to space as radiation. Did I get it right?

mtdewcmu · a year ago

Let's see if I can state this properly. The atoms of the ship will pass right through the event horizon like nothing. To see the ship, though, photons have to travel from the ship to your eyes. As the ship goes deeper into the black hole's gravity, the photons will "appear to" be getting slowed down by the black hole's gravity well, each photon more than the last. So, an outside observer would have to wait longer and longer to get the next photon. In fact, he'd have to wait an infinitely long time to get all of them. It's like an optical illusion, except that a real physicist would say it's not an optical illusion; it's time dilation, etc.

mtdewcmu commented on Black Hole Puzzle johncarlosbaez.wordpress.... · Posted by u/besmirch

cyberax · a year ago

Yep, I explained it a bit more here: https://news.ycombinator.com/item?id=42299891

mtdewcmu · a year ago

So you don't see _everything_ that went in before you, mostly just the _last_ thing.

mtdewcmu commented on Black Hole Puzzle johncarlosbaez.wordpress.... · Posted by u/besmirch

cyberax · a year ago

> Isn't this true of all matter that enters?

Not quite. He will see the light emitted by _all_ of the matter that has fallen in before him, but only in an infinitely small area.

mtdewcmu · a year ago

A single photon can't be seen multiple times, right? So, if photon A goes into Alica's retina, then Bob can't see photon A. If a big, opaque object passes through the event horizon right in front of you, it would absorb or scatter the photons in its path, and you would not see them.