The Nineteenth Byte

lyxal

12:00 AM

these things

Sandbox Posts

12:29 AM

0

A: Sandbox for Proposed Challenges

Polishing off a Sudoku Given a set of 8 numbers as input, output the missing one. Examples 12346789 -> 5 94351726 -> 8

Neil

12:43 AM

pretty sure that's a duplicate sorry

well, there's a question to find the missing digit from 0123456789 but many of those answers work here and many of those that don't are trivially fixed

ATaco

12:59 AM

Woot, Implemented Generics in BrainChild!

Rydwolf Programs

Nice!

user

What's the type system like?

emanresu A

And... you've figured out a way to compile all of this down to bf? Nice

ATaco

It can compile to BF. One shouldn't though.

emanresu A

Does that bit work yet?

ATaco

1:01 AM

@user User classes with metamethods.

@emanresuA Yes*

It only supports 16bit values instead of the currently interpreted 32 bit values

And even a Hello World takes longer than I have patience to test to run.

But the ASM transpiles down to a stack-based language which is trivial to transpile down to BF.

emanresu A

Neat!

Rydwolf Programs

I made a moderately complex stack language that compiled to BF before, it's cool how directly you can implement a lot of data structures on the tape

Unrelated String

yeah

Rydwolf Programs

E.g., the stack was just values interleaved with a decrementing counter

ATaco

Oh I had the structure as 6 stacks as Rail/Value pairs interwoven.

The 6 stacks are then used to represent a "Register" tape, a "Heap" tape, and two stacks for the ASM language.

Rydwolf Programs

1:09 AM

Ah, that makes sense. My thing was simple enough I just had registers as a handful of cells left of the stack

ATaco

Having Registers be a tape also let me have some Scratch memory which was helpful when implementing the Assembly language. (ESPECIALLY for i16 Division)

Rydwolf Programs

Ooh that's clever

ATaco

As the ASM is incredibly simple, I plan to write a transpiler to Unix NASMx64, because as previously noted, it's more or less unusable when compiled all the way down to BF. It only "provably" functions...

Sandbox Posts

1:38 AM

0

A: Sandbox for Proposed Challenges

How to find the counterfeit coin You are the treasurer and you have received information that a counterfeit coin has entered the treasury. All you know is that the counterfeit coin is lighter than the original Knowing how many coins you have in total and using only a balance scale, you need to de...

AviFS

2:21 AM

This one is really fun! It starts all fogged up, and you have to slowly illuminate the puzzle board by working out the numbers, which act as light sources and reveal the neighboring cells. And it has a ton of different mechanics.

beta.sudokupad.app/q3R9PRg4qF

lyxal

3:16 AM

@AviFS I clicked a square, pressed 6 and it was correct lol

AviFS

@lyxal Yeah, I was even gonna say no guessing, haha

lyxal

no guessing? I've guessed the whole fog away!

AviFS

I was afraid of that, haha

It's solvable without doing that :p

lyxal

too late

AviFS

You should find another one, haha

The whole guided adventure thing slowly lighting up the board is way fun

Plus, the beginning makes you feel really smart :p

DLosc

4:15 AM

@AviFS The whole thing is solvable without guessing?

AviFS

@DLosc Absolutely.

How far are you?

DLosc

Hmm. I think I'm stuck.

AviFS

I can give you a hint.

DLosc

It seems like I'm supposed to figure some things out in the central square next, but I don't have enough information to narrow it down.

AviFS

Picture?

DLosc

4:19 AM

Screenshot

(behind a link so as not to spoil it for anyone else who might be trying)

Unrelated String

i have a feeling we're stuck in the same spot :P

never mind

i haven't done anything in the top left... but only now realized i can enter numbers in unlit squares lmao

AviFS

@DLosc Check for where you can place a three in the middle box.

Unrelated String

so yeah, this is what i have :P

AviFS

@UnrelatedString Oh yeah, hahaha

@UnrelatedString Nice!

Unrelated String

thank

DLosc

4:30 AM

@AviFS Ah, nice.

AviFS

@DLosc ;)

I still owe you big time for that last one.

user

@AviFS Ooh, how did you find this?

AviFS

@user Cracking the Cryptic!

user

?

AviFS

@AviFS Here's a link to the video where Simon from Cracking the Cryptic solves this one, if you want to watch it after you give the puzzle a go. The link is timestamped to where he actually starts the puzzle and its ~24 minutes from there.

user

4:38 AM

Oh, it's a channel

Unrelated String

...and speaking of threes i'm both surprised that this is the next move and embarrassed i didn't think of it sooner

AviFS

He sings a song about that in the video, actually, haha. I didn't get the joke and had to look it up in the subreddit.

Unrelated String

ooh

AviFS

That's me in the corner

That's me in the spotlight

Losin' my religion

Except he sings it as...

That's three in the corner

DLosc

This has a bit of an escape room feel to it

user

4:41 AM

Hey, cover up that spoiler!

@DLosc I love how each move unlocks the next clue

AviFS

@DLosc Oh yeah, totally!

@UnrelatedString I'm referring to what you did, only.

Unrelated String

yeah i assumed lol

also it's crazy how much comes immediately from that

the green line is such a fun element

AviFS

@DLosc I hadn't played any of these variants before either, and they crammed a ton of different little things in. And I didn't read all the instructions ahead of time. So it was pretty fun to discover little colored arrows and squares, and then have to find the corresponding rule in the instructions and discover these mechanics.

It's like a treasure hint of little mechanics.

@ATaco Anything can compile to the great tongue of our ancestors, BF ;)

Unrelated String

wait the true power of the green line just now clicked for me

this is insane

Rydwolf Programs

That genie I hypothetically summoned earlier today. My second wish would be free transportation to and from a universe where all CPUs are designed with BF as their only instruction set. Nobody knows why this is the case or can stop doing so, and billions is poured into optimizing brainfuck microcontrollers or compiling new languages into the most performant BF.

It's like eating spiders. Everyone just finds using BF as machine code to be sensible and nobody has or is capable of questioning it.

DLosc

5:02 AM

@AviFS Done (56 minutes)

Unrelated String

nice

AviFS

@DLosc Nice!

Unrelated String

this is all i have so far lmao

AviFS

Twinsies.

@UnrelatedString You're basically right where DLosc was when he sent the screenshot!

Unrelated String

ooh

AviFS

5:06 AM

You can do a bit more plain ol' vanilla sudoku-ing in the last three columns.

Unrelated String

can't help but feel like i'm not hinting myself well enough to resolve some of these 50/50 kinda things

mmm

AviFS

@UnrelatedString What do you mean?

Unrelated String

like guessing-without-actually-writing-guesses and obtaining some kind of contradiction

in a convoluted chain along the line :P

AviFS

@UnrelatedString Oh like lots of pencil marks?

Unrelated String

something like that

AviFS

5:09 AM

The logic isn't too convoluted. You're great on the fun mechanics so far, you just need some more sudoku-ing on the board you already have uncovered.

Unrelated String

figures :P

AviFS

You can fill in some more things, and pencil mark some pairs and triples.

Unrelated String

pairs are probably what i meant by 50/50

AviFS

@UnrelatedString Oh, but you don't have to guess for those.

Unrelated String

like you know that it resolves to one of two possibilities but can't yet determine which it is

AviFS

5:11 AM

it's just that thing where if you have like "| | | | 5 or 2 | 5 or 2 | |"

(Those are cells)

Unrelated String

yeah

AviFS

Then you may not know which cell has the 5 and which cell has the 2, but you know that one of each is in both of them, so no other cells in that row (or box if they're in the same box) can have a 5 or a 2.

Unrelated String

yep

AviFS

Like you have with that 1/2 pair in the "6 cage."

@lyxal o/

lyxal

hello teheere

AviFS

5:13 AM

@DLosc Time really flies, doesn't it? I never thought I'd spend an hour solving a sudoku.

Unrelated String

the shared missing 5 and 7 definitely feel like something approaching that but i guess i haven't looked at it the right way

AviFS

And I spent all day doing one-hour sudoku puzzles.

Unrelated String

actually wait oh of course

user

I've been at this for half an hour and I have barely any numbers :(

Unrelated String

rip

user

5:14 AM

I'm gonna peek at y'all's solutions if I can't do this in the next hour lol

Unrelated String

lol

AviFS

@user Always happy to hint!

Unrelated String

what do you have so far

user

I've reached the center 3x3 square

@AviFS I'd love one

lyxal

@user there's a 9 in one of the squares.

user

5:15 AM

Thanks lyxal

AviFS

If you're on the Discord, you can just screenshare in one of the VCs while you do it, and then ping me whenever you want a hint.

user

I was afraid there might be a 0 there

AviFS

At this point, this is what I'm doing with my evening, haha

Unrelated String

same lmao

user

@AviFS I'm not, but I think I can send an image in Trash, hopefully no one looks there

AviFS

5:17 AM

@user If you want a lot of hints, it'll get cumbersome, but sure. You can do links, and also maybe others will helps.

user

Oh no, I just need one little hint

Or one big one, idk

AviFS

Shoot me.

user

I would never do that

Screenshot

AviFS

Stab me. Actually, that got dark quickly.

lol

lyxal

@AviFS that's a crime. I would not recommend asking people to do a murder on you

user

5:18 AM

lol yeah

@lyxal Shut up, ChatGPT

lyxal

ChatGPT?

AviFS

Shoot me... with a watergun emoji. You know, cuz Apple made it safe now.

lyxal

@user I was referencing Ryan George's youtube skits

AviFS

@user rofl

user

ChatGPT keeps saying silly things like "Don't kill people!" and "Eating bricks is a bad idea"

@lyxal Oh, didn't catch the reference

AviFS

5:19 AM

@lyxal OMG, I love Ryan George. Wow, this is getting off-topic fast, haha

@user I keep wanting to make inappropriate references, damn.

lyxal

@AviFS man, off-topic conversations are tight!

DLosc

@AviFS Yep, turns out he got stuck there too (for like 10 seconds :P)

user

@AviFS By inappropriate, do you mean cyclic? I think our garbage collectors can handle that

AviFS

@DLosc I know! I actually had to go watch the video again to see what he did.

Cuz I was really not processing anymore.

That's how I gave you the hint, haha

DLosc

@lyxal Yeah yeah yeah!

lyxal

5:22 AM

it sounds like it'll be kinda tough to keep making Ryan George references

AviFS

@DLosc Man, texting is confusing. That's... sarcasm? Or agreement? haha

Unrelated String

ooh, despite my inconsistent marking conventions i think i've identified another pair as well as an actual digit

user

Nice!

DLosc

@lyxal Actually, it'll be super easy--barely an inconvenience

AviFS

Btw, does anyone understand the difference between the two kinds of pencil marks in that app?

There's the small centered ones and the small corner-y ones.

lyxal

5:22 AM

@DLosc oh really?

Unrelated String

i have no idea how the corner ones are supposed to be used

user

I'm using the corner ones exclusively lol

Unrelated String

OHHH

of course that's what that pair does

AviFS

@user Do you still need a hint?

user

I do, unfortunately

Unrelated String

5:24 AM

actually wait i could have figured that out already with the other pair there

user

I've spent 15 minutes stuck in the same place

AviFS

@lyxal why?

user

Oh wait, I just got a digit!

DLosc

@lyxal Yeah, you just say something critical to me, and then I say "Sir, I'm going to need you to get all the way off my back about this," and then you, you just say you'll get off that thing!

Unrelated String

now we're gaming

niiice

lyxal

5:26 AM

@DLosc wow wow wow wow wow wow. wow.

Unrelated String

YEAH

AviFS

@DLosc And then you do a backflip, snap the bad guy's neck, and save the day.

Unrelated String

it's so satisfying seeing that part of the board finally light up

AviFS

@user You can place another three.

Also, I'm really sorry that took me so long.

user

No, that was good, I actually figured out that one in the meantime, much more satisfying!

AviFS

5:30 AM

I'm wondering if I should start a CGCC puzzling chatroom, but I know it'll die instantly.

Unrelated String

i can barely even process how much this has picked up

lol

AviFS

@user Oh, nice!

@UnrelatedString haha, nice

@lyxal You joining?

Unrelated String

i have one unlit square lmao

AviFS

@UnrelatedString Yeah, that bugger stays dark for a little while.

Unrelated String

lol

unsure if my reasoning was correct but i actually just lit it

got some 2s now

time to get back to last three columns sudokuing :P

AviFS

5:39 AM

@DLosc How was the video?

Unrelated String

oh, of course

DLosc

@AviFS It was fun to see him go through basically the same steps I did. I realize that's because the puzzle kind of forces you to follow a particular solution path, but it still had me smiling and nodding and going "Yeah, that was a tricky part, wasn't it?"

Now to bed.
o/

Unrelated String

o/

user

Agh, it's past midnight and I have a quiz at 9 tomorrow

But I can't stop

Unrelated String

oooooooh
explosion time

wait no that square ended up being the thing that wouldn't cause a massive chain reaction :P

user

5:45 AM

lmao

lyxal

@user go sleep

user

No.

Unrelated String

i still have something like... three overlapping pairs

user

I have 2 unlit squares, gah

Unrelated String

f

lyxal

5:47 AM

@user would you like me to forcibly kick you so you have no choice but to sleep? :p

user

You can kick me from TNB but not that site :P

lyxal

lol

Unrelated String

HMMMMMMMMMMMMMMM

i am so thankful for the mark highlighting :P

...i may have also broken my chain of reasoning there

oops

let's hope not :P

at least this should be legitimate progress

AviFS

@Bubbler This was a brilliant question.

26

Q: Nonogram line brute-force solving

Background Nonogram, also known as Picross or Griddlers, is a puzzle where the objective is to determine if each cell on the 2D grid should be colored or left blank, using the numbers of consecutive colored cells on each line. The following is an example Nonogram puzzle with solution. The pr...

Unrelated String

okay yeah unless i'm mistaken i have literally constructed three pairs that cannot be resolved from the outside, and create an outright contradiction in the top?

user

5:56 AM

Is that good?

Unrelated String

mistake in red :P

yeah this feels better

user

Nooo, I made a mistake

Unrelated String

f

oh yeah, it's all coming together

user

Okay I'm going to sleep now lol

Unrelated String

81:21 🥳🥳🥳🥳

AviFS

6:08 AM

@lyxal This just came up on my feed. Out of nowhere. youtube.com/watch?v=IJNR2EpS0jw

lyxal

that's an old one

haven't seen that for a while :p

AviFS

6:27 AM

Wait, guys. How about an esolang with barycentric coordinates! That seems like a cool, and afaik unexplored, space.

#TODO

Unrelated String

ooh

lyxal

Who the hell is bary, why can't he spell his name right, and why does he get a coordinate system centred around his position?

"hey I'm 45 degrees north of Barry if you want to come over" "oh cool, I'll be there soon." "oh wait nevermind I'm now 26 degrees south east of Barry" "ffs Barry why can't you stay still for more than 5 seconds" "1 degree above Barry now"

l4m2

6:57 AM

@lyxal Are you stepping over Barry?

lyxal

7:29 AM

@l4m2 he's tunnelling underground

l4m2

@lyxal I mean you're exactly over him so degree changes fast

Sandbox Posts

0

A: Sandbox for Proposed Challenges

Print all pandigital numbers Given a base as input, output all pan-digital numbers. A number is pan-digital if it includes every digit in that base at least one. Every number is considered to contain infinite number of leading 0s. sequence rules apply. You may either: given a base and a index, pr...

Jo King

either barry is really close or moving really fast

Unrelated String

or both

perhaps some unknowable mix

New Posts

9:05 AM

0

Q: Time to shortest transposition

Yesterday, as part of a IQ-style test, I got this interesting question: The time on a 24-hour clock is 11:43. What is the least number of minutes I should wait before the same digits are on the screen again (in any valid 24-hour time order)? The answer's 91 minutes, if you were wondering! This...

code-golf math

mousetail

9:47 AM

@NewPosts I think this question is fine IMHO, doesn't deserve this number of downvotes

mousetail

10:19 AM

LDQ What's a good single symbol to use for "random"?

lyxal

?

mousetail

I want use that for if already

lyxal

are you bound to ascii?

mousetail

No, I want to limit basic builtins to ASCII but random is not basic

lyxal

I have the perfect thing

⚃

mousetail

10:25 AM

(Idea is that the ASCII only subset of the language is also a interesting golfing language by itself, if worse than the full thing)

@lyxal Oh that's good thanks

lyxal

chosen by fair dice roll

mousetail

Prove it, share a photo of you rolling a die

lyxal

you'll have to invent a time machine for that

I once made a video proving it to caird

but it's gone now

mousetail

Film every dice you roll until you roll a 4, then share that photo

Adám

@mousetail ⍰

mousetail

10:28 AM

@Adám Hmm seems very similar to "if", would probably confuse people into thinking they are related

lyxal

@mousetail fine

you happy now?

mousetail

I'm very happy thanks

pxeger

11:23 AM

→ 10 messages moved to The Edge of Propinquity

caird coinheringaahing

@lyxal Did you?

I remember the video of you washing Aaron, but I don't remember you filming yourself rolling a die

lyxal

11:39 AM

Mar 27, 2022 at 11:34, by lyxal

Proving that one xkcd about fair dice rolls correct with absolute facts

►

Mar 27, 2022 at 13:37, by lyxal

What can I say? People just like watching me prove caird wrong with a video that took like 12 attempts

mousetail

This video is not available anymore :/

lyxal

1 hour ago, by lyxal

you'll have to invent a time machine for that

1 hour ago, by lyxal

but it's gone now

Dec 7, 2022 at 2:56, by emanresu A

Sep 27 at 0:34, by caird coinheringaahing

@lyxal This is comparable to the burning of the Library of Alexandria

those should answer all questions you have

mousetail

Then film it again

mathcat

@lyxal aw man that was pure gold

lyxal

Jul 24, 2021 at 2:13, by lyxal

@9volt88 I'm a nobody, nobody's perfect, I'm no pro, I'm just a boi who rickroll

Today I remembered GPT once said that

mathcat

11:45 AM

GPT-3?

lyxal

yes

mathcat

Right, it went viral here sometime last year iirc

or was it 2021?

lyxal

2021 is when we were doing transcript autocompletes

Kamila Szewczyk

a question to people who made their own golflangs/languages in general: where do you host the language communities? CGSE chat, discord, matrix...?

lyxal

Chat and discord

Kamila Szewczyk

11:47 AM

i'm happy with the state of my language as of recently and I want to start submitting some answers in it

mathcat

noice

Unrelated String

nice

Ginger

1:18 PM

@KamilaSzewczyk CGCC Wiki would appreciate some contributors if you want to make a page on it :p

Ginger

1:46 PM

@Wezl' welcome back!

it's been a while :b

mathcat

heyo

Seggan

2:02 PM

@KamilaSzewczyk most make a chatroom

caird coinheringaahing

3:34 PM

@lyxal I have absolutely zero memory of this

user

Wow, deleting YouTube videos now also deletes them from people's memories

mathcat

Yeah, apparently it's a new feature

parz

‘Lo.

Rydwolf Programs

Hi!

Rydwolf Programs

3:56 PM

TIL I have s comment with 38 upvotes lol

I keep trying to run it, but all the random program does is factor RSA primes in polynomial time. — Rydwolf Programs Apr 11, 2020 at 13:54

A rare instance of 145 year old Radvylf actually being funny I guess :p

*14

I'm apparently a bit older than I remembered :p

mathcat

I'm pretty sure my most upvoted comment has two upvotes.

Going to post, final feedback?

Seggan

4:15 PM

@RydwolfPrograms hrm u the same age as me

New Posts

0

Q: Infinite Apple Dilemma

I have encountered this type of puzzle, that usually involves apples, several times. It goes as follows: There is a certain number of apples in a basket. Ava takes a third of the apples. Bob takes a quarter of the apples that are left. Finally, Dennis takes one-sixth of the apples left. In the e...

code-golf array

0

Q: Determine the Octet(/Duplet/18-electron) Rule

Given an atomic number in the inclusive range [1,118], write the shortest program/function that outputs one of {2,8,18} if the element with that atomic number follows the duplet, octet, or 18-electron rule, respectively. Notes The Octet/Duplet/18-electron rule is a rule of thumb that describes h...

code-golf integer chemistry

user

I finally solved that sudoku Avi linked! (took like 15 minutes, but only because I spent over an hour on it yesterday)

It's so satisfying when you get to that last part and you can just knock everything out at once

Seggan

4:32 PM

@ATaco how are you implementing generics when i barely started on classes

ive been working on rol for months and you apparently just started a week ago

@user uve inspired me to work on it myself :P

Seggan

5:12 PM

ofc my scraper breaks when it reaches page #404 :P

user

@Seggan ATaco has other languages and started on this more than a week ago iirc

Seggan

ah

man i love it when you figure out where a 9 goes and like 5 other nines fall into place :P

Wezl'

5:42 PM

@Ginger hey yall

Seggan

5:56 PM

@user oh wow that blitz at the end

i first marked every square with guesses, then was stuck until i realized the hints showed a 6 and a 7 in the top row and 6 could only go on the spoiler because spoiler

did it in 47:52

mousetail

Thoughts on this? https://codegolf.meta.stackexchange.com/a/25546/91213

It got a lot of criticism and -1 yesterday so I'd kinda given up on it but now it's +3/-1 so maybe it's worth pursuing further?

Ginger

6:14 PM

lol

> unrefefernecing

Simd

6:27 PM

Math question, if I take out a loan of 100,000 at 12% interes per year, how much interest is that in the first month?

(there is a second harder part)

Assume interest is calculated every day

Seggan

6:44 PM

A = P(1 + r / n) ^ (nt)

so if n is 365 and t is .0833...

A = 100000(1 + .00032876) ^ ~30.4

wait no thats wrong

wolfram alpha says 3.7 million

which seems way wrong

oh wait thats annual interest compounded daily

you have to divide the interest rate by 365

wolfram alphas answer

Simd

7:52 PM

Thanks!

The answer should be around 1000 I think

What did you get?

DLosc

> Related queries:
Deuteronomy 23:19

which is a verse about not charging excessive interest rates, LOL

New Posts

0

Q: Storing the code in unary

Your goal is to create a program that can store another program … in unary. The main program uses the unary to run the program encoded in it, as if you were just running the encoded program normally. Let's say we want to encode this program: print("Hello, World!") We encode it to unary (obviousl...

code-golf encoding

Rydwolf Programs

8:26 PM

@Simd $99.45

100000 * 1.012 ** (1 / 12) - 100000

@mousetail I don't think it's interesting

It's just going to be "return a piecewise function that uses a polynomial thing in the center that everyone will copy from the first answer"

Rydwolf Programs

8:51 PM

Has anyone answered a challenge here with DNA

(also, "CGCC" is how I remember that C and G pair in DNA :p)

Transcript for