The Nineteenth Byte

12:15 AM

@quartata Just learned this guy is running for president while simultaneously on the run from the IRS

12:32 AM

@JoKing I've edited my Retina answer to include a pure unary regex detector (currently 7 bytes longer than my Retina code when you take the decimal to unary conversion into account)

Deadcode

12:46 AM

Awesome. I'll avoid analyzing it because I'd like to try that problem myself

@Neil did you do it without nested/forward references?

Wow, you did

That is an ECMAScript regex.

What funny coincidence that it's the same length as the Retina program.

Very clever algorithm. I was just going to divide by powers of two until finding one where the quotient is less than the divisor. I probably still will, just to see how it compares in length to your regex.

New Main Posts

1:12 AM

1

Q: Partition a square grid into parts of equal area

This challenge is based on the following puzzle: You are given an n by n grid with n cells marked. Your job is to the partition the grid into n parts where each part consists of exactly n cells. Example Here is a puzzle on the left and its (unique) solution on the right: Challenge You will...

TRITICIMAGVS

Hey, It's been a while since I did much work on it but here's a new screenshot from my Brain-Flak--code-golf--rogue--like game:

Veskah

The absolute mad maan

PhiNotPi

1:27 AM

Anybody remember AvocadOS?

El'endia Starman

...yes. I never touched the thing, but yes.

PhiNotPi

Well we should bring it back.

I was joking about it with a group of CS friends today... so there's real-world demand for an OS with such comedic value

Khuldraeseth na'Barya

1:43 AM

CM*C: Make a case-sensitive search engine.
* M = Mega

What is AvocadOS?

DJMcMayhem

@TRITICIMAGVS Wow.

I can honestly say, 3 years ago when I thought to myself "Hey, what if I made a language where every command is made up of nested brackets", I never thought "I bet one day someone will make a video game off of this idea"

PhiNotPi

@Khuldraesethna'Barya An operating system that's entirely centered on JQuery.

It's an unfinished project.

El'endia Starman

.... definitely not touching it now! :P

PhiNotPi

It would have just enough assembly to get C working, and just enough C to get a javascript interpreter working, and then the rest would be JQuery-powered.

Khuldraeseth na'Barya

@PhiNotPi Sweet, thanks! Found it.

PhiNotPi

1:48 AM

Pretty website: jqueryos.github.io

@El'endiaStarman you expected something else from a project with "avocad" in its name?

Downgoat

@PhiNotPi did we ever get past bootloader?

:P

El'endia Starman

@PhiNotPi I don't know what I was expecting, but it wasn't jQuery.

PhiNotPi

Pretty sure it could display character codes from keyboard input, or something like that.

Downgoat

huh

@PhiNotPi i am on board. I now have enough OS and assembly knowledge to probably get somewhere :P

PhiNotPi

I feel like we're not actually that far from the actual jQuery part. After we reach the jQuery stage, then it's a matter of adding all the "usability" features which aren't critical.

(As in, they totally are critical for any operating system to be useful, but I would be satisfied with this project if we get to the point that we do everything in jQuery)

@Downgoat I've gained a lot more C experience than when we first started this project, maybe I can help more now. Although I'm still not that good.

Deadcode

2:13 AM

Holy crap. Using my idea came up with a 48 byte regex

so close

It's much faster though.

Downgoat

@PhiNotPi well for jQuery there's two significant aspects which is implementing the event loop, implementing DOM interface, and mounting v8. Mounting v8 would require modifying it to support a custom OS or implementing posix stuff like pthreads idk if you'd get much milage with a cross compilation

Skidsdev

@PhiNotPi What's AvocadOS? can't find anything on google

Veskah

2:31 AM

Gotta figure out how to make a toast pun out of a daemon or something to have AvocadOS on TOAST

Bonus points for a guacamole process

Quintec

@Skidsdev They have bad SEO :P

Downgoat

@Skidsdev project some of us attempted a looonng time ago at PPCG to essentially make an OS that runs almost all on jQuery. This was back when jQuery and Avocados were everyone's favorite meme

Deadcode

@Neil submitted my regex

Skidsdev

@Downgoat that sounds like the most wonderful, horrible thing ever

PhiNotPi

2:47 AM

Hmm... I guess I'm not all that certain what it really takes to get V8 working.

AvocadOS

Discussion for the design and creation of AvocadOS. How juic o...

IDK if there's actual interest in revamping the project. But if there is, then someone could unfreeze the room and maybe something will come of it.

quartata

3:55 AM

@PhiNotPi well you need executable space

that is V8 needs to be able to write the JIT assembly somewhere and be allowed to jump to it

while not, you know, allowing for all the other problems that come with that

Downgoat

@ASCII-only what should syntax look like for specifying which branch of if statement is expected. e.g. for optimization

ASCII-only

6:06 AM

@Downgoat imo i'd recommend against that, see processor branch predictors (i.e. don't do it at all, or you need a smarter predictor)

@PhiNotPi imo v8 is really specific, it'd be better if it was changed a bit so it could be relatively easily changed to any other language

@PhiNotPi yes

@PhiNotPi well. if you can do everything in jQuery (well, JS) then... that's literally 99.9% of the work

Downgoat

7:43 AM

@ASCII-only we could technically try any other engine such as spidermonkey

H.PWiz

8:31 AM

@Deadcode It turns out Proth was much easier than I thought. I had a brainwave yesterday night for how to solve it. Turned out to be the same as Neils. (I haven't figured out your solution exactly yet)

Deadcode

@H.PWiz Yeah, that's awesome! I see what you did there

It's kind of an implicit division, I think.

Implicit that the two odds match

H.PWiz

Yeah, I was inspired by my squares solution

Glad I solved that first

Why would (\3\3)*$) be faster than (\3\3)*)$

Is is because, then * knows that it has to go to the end of the line?

Deadcode

Because the regex engine sees the $ sooner and can fail to match if it's not at $

and can more easily do optimizations... it doesn't have to be smart enough to look outside the ()

@H.PWiz Yes, that's it exactly.

I'm playing a fast-paced game right now that's why my responses aren't that good

Okay actually it came out well enough :)

I think I've never actually used that trick that you did.

Gotta reexamine all my previous work and see if it can be used

Deadcode

11:03 AM

@H.PWiz Could you explain why you think my Carmichael regex might get false positives?

AvocadOS

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