The Nineteenth Byte

DLosc

00:02

@user It's actually "J's On!" (a hidden piece of J propaganda)

user

00:29

Good way to waste time: xkcd.com/1975

Bgil Midol

agreed

Bubbler

How did they manage to make "this is the song that doesn't end" part truly never ending

allxy

@Seggan I wrote a json parser in JS with one line: eval

user

00:46

That's nothing, I once wrote a JS interpreter in one line: eval

Radvylf Programs

@allxy This is so pointlessly evil I'm tempted to kick-mute you (not really) :p

Or should I say...pointlessly eval

Using eval to parse JSON is like using a loaded shotgun as a hammer when doing home renovation

DLosc

@RadvylfPrograms But hey, if you always carry your loaded shotgun with you, whereas you don't own a hammer and would have to drive to the store and buy one, the shotgun means you get the job done a lot quicker!

Radvylf Programs

But everyone who uses JS has a hammer superglued to their right kidney

6

JSON.parse

allxy

But saving six bytes is buck more important than getting XSSed.

5

Radvylf Programs

But JSON.parse is also significantly more performant, so it gives you more milliseconds remaining until your death to make more effective golfs

E.g., the shotgun hammer might tear down a wall significantly faster but you can tear down lots more walls at an above average pace by using a normal hammer, instead of just a couple of walls really quickly then bleeding to death

lyxal

00:56

Why use a hammer when you can use something like a bulldozer /s

Alternatively, just vein mine the wall :p

Neil

@Seggan surely 1.6e-10 is valid in JSON as well as JSON5?

allxy

And we care about speed?

Radvylf Programs

No, who said we care about speed

Well I did, but not as a terminal goal

Parsing the JSON faster gives you more time to work on bigger golfs.

Whch of course makes no sense since that only saves milliseconds but I am making metaphors about shotgun hammers instead of doing my math homework so doing sensible things isn't really to be expected from me in the first place

Bubbler

01:15

Imagine doing work

user

You should also get your right kidney checked out, that can't be helping you

Seggan

02:11

@Neil oh...

emanresu A

03:28

> got another moderator to suspend him "For Science".

Source

DialFrost

03:40

is this ready? codegolf.meta.stackexchange.com/questions/2140/…

emanresu A

Yes.

New Posts

0

Q: Building spikes

Inspired by this building (United States Air Force Academy Cadet Chapel, Colorado) Your task is simple, given a non-negative integer n, output the spiked building to size n Size 1: ^ /|\ /.|.\ /..|..\ _______ Testcases 2 -> ^ ^ /|\/|\ /.|..|.\ /..|..|..\ __________ 7 -> ^ ^ ...

lyxal

03:54

oh frick today marks my 4th year of code golfing

happy birthday to my account

emanresu A

Happy birthday :)

lyxal

Yes, I am indeed a 4 year old

you can tell by the fact I think that object . method () is a funny way to annoy your friends in java

it's valid, but looks horrible

allxy

05:06

@lyxal r/softwaregore

AnttiP

05:38

Math problem: Given any infinite non-repeating string, must there be infinitely many prefixes which don't match the regex /(.+)\1$/ ? Context: I need to verify some answers to my most recent challenge

Bubbler

05:59

I think the latter is true for any infinite string that is not a repetition of a single character (I didn't fully grasp the former but I guess it roughly means what I'm thinking of)

AnttiP

@Bubbler the regex matches (partially) also strings like CGCCabcabcabcabc...

Here there are finitely many non-matching prefixes

Bubbler

Oh, didn't notice the lack of ^

Then what do you mean by non-repeating? Is it something like an n-ary representation of an irrational number?

emanresu A

06:15

Everything here is downvoted

@Bubbler I think that they mean that no infinite suffix is a single string repeated forever.

AnttiP

@Bubbler yes, exactly

Bubbler

If only finitely many prefixes don't match the regex, then there must be some threshold k where every length beyond length k matches the regex. Not sure where to go from here, but my instinct says there must be some tail that has the same length of matches forever, resulting in a rational number

emanresu A

I forgot what it's called, but there's a sequence where the nth term is the number of times the tail of the series is repeated.

this I think?

Bubbler

06:32

I found another sequence (this) that looks like a strong counterexample

3

I believe every prefix starting from length 6 has a repeating suffix, and yet it's not a repeating sequence

emanresu A

06:52

My messy JS shows that to be true for the first <large number> terms.

AnttiP

Yes this looks good, thank you for your help! I'll find a proof of the repetition and post it to math.stackexchange later today

SegFaultPlus4

07:11

@emanresuA is there a 4 in it

@emanresuA how even

Bubbler

> The first 4 occurs at a(220).

SegFaultPlus4

@Bubbler does every number occur in the sequence

Bubbler

> We believe that for all N >= 6, he first time N appears is at about position 2^(2^(3^(4^(5^...^(N-1))))).

It is not known but conjectured to be true

Sandbox Posts

07:58

0

A: Sandbox for Proposed Challenges

Line Islands in a Word Search Tags: code-golfgridstringword-search My third word search related challenge in a row. :) Challenge: Brief explanation of what a word search is: In a word search you'll be given a grid of letters and a list of words. The idea is to cross off the words from the list in...

Bubbler

I think I've got a nice proof too.
Start induction from "1 2 1 1 2 1 2 1", where the property holds for the prefixes of length 6 to 8.
Now assume the property holds for n-th Fibonacci word Wn, of length Fn. For Wn+1: up to index Fn, the property holds because Wn+1 has Wn as its prefix. Beyond index Fn, the index is derived from the 1->12, 2->1 mapping from Wn. Each index is one of three cases: 1->(1)2 (holds since its previous number is always 1), 1->1(2), 2->(1) (both hold from the property of Wn, by doing the mapping on the repeating region).

emanresu A

Hm, nice

CMC: Length of n as a "generalised roman numeral", which is pretty much roman numerals but there's a symbol for every 10^n and 5*10^n

That's a bit confusing but I'm not sure how to state it better.

Bubbler

So each of 0-9 digit in decimal translates to 0 1 2 3 2 1 2 3 4 2

Unrelated String

^

Bubbler

K, ungolfed: +//0 1 2 3 2@5\10\

Unrelated String

08:04

unless you're thinking of the generalized subtractive version

Bubbler

+//&/(6-)\5\10\

15 bytes

and I like the weird antisymmetry of slashes and backslashes

Unrelated String

it is quite striking

emanresu A

@Bubbler Oh :P

@UnrelatedString Yeah

@Bubbler I have 11 bytes in Vyxal so I'm probably missing some clever trick

Bubbler

Wait no, that doesn't work

emanresu A

08:21

the mods come marching in

SegFaultPlus4

it sure is a good thing we all agreed @GingerIndustries is not a time traveler

@emanresuA that makes sense

like decimal, but instead of 0-9, we got 00-14

by the way, in response to this, who wants to make a discord server with Code Golf in the name

lyxal

discord.gg/WgTEPvP

Already done

Has been for years

SegFaultPlus4

@lyxal tf

when did u do this

lyxal

I didn't

Someone else did

Many years ago

SegFaultPlus4

well who did

lyxal

08:30

I don't know

One of the older users who isn't here anymore

SegFaultPlus4

@Bubbler you should submit that as an actual mathematical proof

Wheat Wizard

I'm hungry.

7

SegFaultPlus4

@WheatWizard go conjure up some wheat then

Unrelated String

...i just noticed your discord username lmao

SegFaultPlus4

bc your name is Wheat Wizard

Unrelated String

08:32

good old unicode arabic ligatures

SegFaultPlus4

@UnrelatedString what even

Unrelated String

ww's discord username is ﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽﷽

which as far as i can tell is the single unicode character "bismillah" 32 times (the max length)

SegFaultPlus4

@UnrelatedString that's ONE unicode character

stop the cap

Unrelated String

u+fdfd

SegFaultPlus4

i did 4000 keystrokes in 139 seconds

@UnrelatedString u+fdfd is not that, trust me

emanresu A

08:41

Uh... yes it is

SegFaultPlus4

@emanresuA tf

@emanresuA alright then, Python will decide this issue

emanresu A

JS already has, and I'm pretty sure they agree

SegFaultPlus4

@emanresuA Python > JS

emanresu A

>>> "\ufdfd"
'﷽'

SegFaultPlus4

@emanresuA what is fdfd in base 10

emanresu A

08:46

65021

SegFaultPlus4

ok

emanresu A

>>> chr(65021)
'﷽'

SegFaultPlus4

@emanresuA you are correct

on this once

@emanresuA damn it

CMC: guess why i have 103 rep on Meta

ophact

meta what?

meta se?

or meta so?

or meta superuser?

or meta cg?

or what

emanresu A

Fun fact: à́̀́̀́̀́̀́̀́̀́̀ is a valid variable name in javascript

SegFaultPlus4

08:54

@ophact this one

ophact

ok

You just joined for the sake of joining, then you suggested an edit

SegFaultPlus4

no

ophact

'à́̀́̀́̀́̀́̀́̀́̀'.charCodeAt() -> 97

?

SegFaultPlus4

@ophact take its length

Aiden Chow

@SegFaultPlus4 it does seem like thats what happened though... meta.stackexchange.com/review/suggested-edits/78608

SegFaultPlus4

09:13

@AidenChow ok you win

ophact

So I win then?

SegFaultPlus4

no, you needed to specify WHAT the edit was of

ophact

but I proposed the idea first and then @AidenChow followed through with it

so we both win

SegFaultPlus4

ok then

you both get a prize

ophact

I get to suggest 126 edits on your posts and you approve all of them so I get to 2k reputation.

SegFaultPlus4

09:17

you get a -100 rep bounty

ophact

So I put 100 rep bounty on your post?

That would be -100 rep

SegFaultPlus4

yes

ophact

Which one

SegFaultPlus4

any

ophact

Which one is the most worthy of a bounty?

SegFaultPlus4

09:20

if i had to pick, this one

ophact

Okay. 100 rep bounty coming up.

but of course, you are dreaming, and once you wake up, there will be no 100 rep bounty on your post.

SegFaultPlus4

@ophact ok then

i'll enjoy this for now

ophact

RRRIIINNNGGG!

Dismiss | Snooze

SegFaultPlus4

@ophact snooze

i want to see the bounty before i wake up

ophact

RRRRRRIIIIIINNNNNNGGGGGG!!

Dismiss | Snooze

SegFaultPlus4

09:25

@ophact snooze

ophact

RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIINNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

WAKE UP you are late for work or whatever

SegFaultPlus4

no

i'm seeing the bounty before i wake up

ophact

Hang on, all right?

There's your bounty

Not photoshopped

@SegFaultPlus4 Now wake up

AnttiP

09:40

@Bubbler I investigated further and found that the "best" counterexample to the conjecture is a string formed by starting with "001001" and then repeatedly adding "01001" or "001". For example "0010010100100101001010010010010100101001...". It's the "best" since it works when the prefix is five characters or longer (which is the minimum)

SegFaultPlus4

@ophact i will check this myself

ophact

Go ahead

SegFaultPlus4

@AnttiP so it's random

whether you add 01001 or 001

AnttiP

yes

emanresu A

Weird stuff is occuring

Try editing this

And looking at the preview

ophact

09:43

> Suggested edits are not allowed on non-tag-wiki posts on meta sites.

SegFaultPlus4

09:56

i'm making a quiz

ophact

Did you get your bounty?

SegFaultPlus4

no

ophact

That means you're awake

emanresu A

o/

ophact

o/

AnttiP

10:26

I wonder... does the regex /(.+)\1{2}$/ have counterexamples? What about /(.+)\1{3}$/ ? Is there a counterexample for every n?

SegFaultPlus4

@AnttiP what is this a counter example of

AnttiP

So the original question was, given a infinite non-repeating string (such as the decimal expansion of an irrational number), must there be an infinite amount of prefixes so that the regex /(.+)\1$/ does not (even partially) match the prefix

Bubbler found a counterexample and later I also found one

Now I'm wondering if the conjecture is true for /(.+)\1{2}$/

SegFaultPlus4

this is the longest quiz ever

ophact

10:41

404

SegFaultPlus4

@ophact what

ophact

404 File not found

SegFaultPlus4

11:16

lies

it works fine on my screen

PyGamer0

CMQ: Is there a way to make this function cleaner? As in removing some if statements / refactoring redudant things?

SegFaultPlus4

@PyGamer0 no

also i have a CMQ: i want to make a challenge about isomers of alkanes

should i do it

also @AidenChow you still have a -100 rep bounty waiting

PyGamer0

11:36

in flax, 16 secs ago, by PyGamer0

look at the amount of digits

very cool

SegFaultPlus4

@PyGamer0 i cannot see

can you provide a text version

lyxal

11:50

@SegFaultPlus4 it's a picture of a shell session of an esolang called flax. There's an expression being evaluated (the digit 2 and then the square root symbol), and the result is to an accuracy of about 100 or so decimal places

Adám

@RadvylfPrograms Can I add this to apl.wiki/humour?

SegFaultPlus4

have any of you made a 2d lang

lyxal

@Adám holy crap the APL wiki has a memes page

This is mind blowing news to me

@SegFaultPlus4 I have

It was the first lang I ever made

SegFaultPlus4

@lyxal send me a github

PyGamer0

@lyxal TYL

lyxal

11:57

@SegFaultPlus4 One moment

github.com/Lyxal/Minefriff

PyGamer0

@RadvylfPrograms lmaoo

@lyxal fyi its exactly 100digits

Ginger Industries

I may make a 3D esolang using Voxel Painter

also olleh

SegFaultPlus4

@GingerIndustries gat netug

lyxal

@GingerIndustries did you mean Vyxal Painter?

SegFaultPlus4

i intend to defeat rickroll defender someday

Ginger Industries

12:03

@lyxal nope

lyxal

@GingerIndustries actually, you did

SegFaultPlus4

@lyxal but actually, they did not

Ginger Industries

@lyxal No, I did not.

lyxal

@GingerIndustries yes, you did

SegFaultPlus4

@lyxal incorrect

Ginger Industries

12:04

@lyxal nope

SegFaultPlus4

@lyxal it's 2 v 1

lyxal

@GingerIndustries like how you "fixed" my github pfp, you "meant" vyxal painter

@SegFaultPlus4 make it 1 v 2 and I'll agree ginger isn't a time traveller

Ginger Industries

@lyxal ah

but what if I am

SegFaultPlus4

@lyxal that's fact, you don't have to agree with it

it just is

lyxal

@SegFaultPlus4 it's only fact if it's on the TNB wikia

SegFaultPlus4

12:06

@lyxal what

where is the wikia

Ginger Industries

brb

lyxal

@SegFaultPlus4 the-nineteenth-byte.fandom.com/wiki

and before you try to edit it in somewhere, keep in mind I made it

SegFaultPlus4

@lyxal do you think that will stop me

lyxal

yes

can't edit a page if it's locked

SegFaultPlus4

@lyxal wrong again

i will make a new page

ezpz

Ginger Industries

12:12

back

lyxal

@GingerIndustries front

Ginger Industries

Mar 6 at 23:46, by Ginger Industries

@allxy not again

@lyxal library

lyxal

oh okay

cool

Ginger Industries

@Seggan 3.11

lyxal

I thought I read somewhere that it's built-in though

Ginger Industries

12:14

not yet

SegFaultPlus4

@lyxal back

lyxal

wait is the yaml library pipped or part of stdlib?

Ginger Industries

it's going to be called tomllib and atm can only read TOML, not write it

@lyxal stdlib

lyxal

thanks, I couldn't remember if I had to pip install or not

which is concerning seeing as how I use it for stuff

SegFaultPlus4

i got my friends with the secret rickroll generator @lyxal uses

i am going to ask my mother if i can make alcohol this weekend

user

12:28

@PyGamer0 x is not a great name

Also, filter(i for i in enumerate(x) if not x[i]) should work

Is there no indices where function?

lyxal

12:42

sometimes my noise-cancelling headphones make it sound like it's raining when it really isn't and I don't like that. Makes me think it's epic weather when it's just normal weather

PyGamer0

13:08

@user ?

@user oops i pushed so it points to the wrong location lol

@user hm thanks

lyxal

@PyGamer0 as in, indices where apply a function is truthy

PyGamer0

oh a quick

@user github.com/PyGamer0/flax/blob/main/flax/interpreter.py#L381

^ i meant that

Ginger Industries

imagine making a golflang

PyGamer0

@lyxal ok added that to the "To add" issue

Mar 6 at 5:32, by PyGamer0

in flax, 37 secs ago, by PyGamer0

Any Feedback for these elements I'll add to flax?

Ginger Industries

Etch

Room for discussion of Etch (github.com/GingerIndustries/Etch)...

ophact

13:21

I wanna use Etch

Ginger Industries

you're in luck then

PyGamer0

@GingerIndustries nice

Ginger Industries

I currently have 2,199 rep :/

ophact

Maybe you shouldn't have downvoted that answer

PyGamer0

13:39

like wtf

TIL Dreamsexuality is a thing

i should probably go read mpmath docs...

Sandbox Posts

0

A: Sandbox for Proposed Challenges

String table code-golf string matrix For the given string s, generate generate a table like below. Input: abcd Output: abcd bbcd cccd dddd Input:Hello, world! Output: Hello, world! eello, world! llllo, world! llllo, world! ooooo, world! ,,,,,, world! world! wwwwwwwworld! ooooooooorld! rrr...

SegFaultPlus4

14:12

wtf
why even

Ginger Industries

@SegFaultPlus4 good question

SegFaultPlus4

@GingerIndustries do you have the answer

because if not, i vote to close "Dreamsexuality" as unclear

how do i link to imn chatages i

oh i see

Radvylf Programs

14:29

@Adám Sure

Adám

Does this meme have a name, like the "before and after" meme?

Radvylf Programs

No, it's not a pre-existing image macro.

Adám

Do you want to explain it?

Radvylf Programs

The picture is from a video of a plane taking off, but with a cat unknowingly in the wing or some part of the plane. So there's the expert Jelly user and the APL/J/K user enjoying the flight (learning Jelly or APL/J/K) and the cat's just barely hanging on.

Adám

Thanks.

@RadvylfPrograms So you're officially "Radvylf" rather than "Redwolf" now?

Radvylf Programs

14:38

Yep.

SegFaultPlus4

@Adám afaict yes

PyGamer0

@Adám proof: he changed his github username to Radvylf

Radvylf Programs

Further proof:

5 mins ago, by Radvylf Programs

Yep.

:p

Adám

Right, and redwolfprograms.com redirects to radvylfprograms.com

@RadvylfPrograms First-hand accounts are considered unreliable by Wikipedia standards.

Ginger Industries

and Wikipedia is always reliable /s/s

Adám

14:45

[citation needed]

Radvylf Programs

Oh true, I guess this would also count as original research :p

Ginger Industries

[dubious-discuss]

PyGamer0

@Adám pretty sure chains in Jelly are trains in J and links are atoms or atoms modified by quicks [citation needed]

aplwiki.com/wiki/Jelly

SegFaultPlus4

@GingerIndustries does /s/s mean the /s is /s

PyGamer0

@JellyPros please confirm

SegFaultPlus4

14:55

or does /s /s mean sus

or " "

according to this 3 is evil

Ginger Industries

Interesting how "smallest" is larger then "largest".

New Posts

0

Q: Generate this string table

For the given string s, generate generate a table like below. Input:abcd Output: abcd bbcd cccd dddd Input:Hello, world! Output: Hello, world! eello, world! llllo, world! llllo, world! ooooo, world! ,,,,,, world! world! wwwwwwwworld! ooooooooorld! rrrrrrrrrrld! llllllllllld! dddddddddddd!...

code-golf string matrix

Adám

15:11

@PyGamer0 Something needs fixing?

PyGamer0

i think yeah

need to confirm though

@UnrelatedString am_i_right.exe

Unrelated String

on what again

the jelly/j/apl terminology thing?

PyGamer0

30 mins ago, by PyGamer0

@Adám pretty sure chains in Jelly are trains in J and links are atoms or atoms modified by quicks [citation needed]

@UnrelatedString yeah %

mathcat

@allxy wth you said nerd

so that means

hmm

lyxal says nerd all the time

but you're in another timezone

Ginger Industries

sus amogus?

mathcat

15:25

very sus

Ginger Industries

sus amogus confirmed

mathcat

but allyx is active when lyxal should be sleeping

Unrelated String

"link" in jelly corresponds exactly to "verb" in j except it can also refer to "sentences"'

Ginger Industries

hm

SegFaultPlus4

i'm confused

Unrelated String

15:28

and yeah "chains" roughly correspond to "trains", except the way the syntax works it also sort of works like just the normal style of evaluation

mathcat

it even rhymes with train!

SegFaultPlus4

who is allxy, and allyx

and lyxal

Adám

15:51

@PyGamer0 Yeah, makes sense that "link" and "chain" were swapped. Fixed now.

PyGamer0

does flax count in the "array languages" category :P

helo DLosc

DLosc

Hi ^_^

@NewPosts I agree with @UnrelatedString that this is probably a duplicate, but I don't want to hammer it when there aren't any close-votes yet. What do y'all think?

Bgil Midol

@DLosc not dup

Unrelated String

i'd vote dup

should probably actually vote come to think of it

DLosc

You've got a dupe-hammer too

Unrelated String

16:06

oh shit do i now

is the threshold only 10k

oh the tag badge

fuck

DLosc

Yeah

something something great power great responsibility

PyGamer0

> With great power comes great 11.

i think it was that

DLosc

I guess if we get five people in chat who have dupe-hammers to agree that it's a dupe, one of us can just hammer it :P

(Assuming that others agree, of course--and Bgil has already disagreed.)

pxeger

I've V'dTC

user

3 vtc already you should hammer

PyGamer0

16:12

hammers the nail onto the wall :P

Radvylf Programs

Some people in my class are discussing a time when they were like ten that their parents left a case of kool aid in the back of a hot car for weeks and it fermented into alcohol somehow and they got drunk

It's pretty funny

PyGamer0

lmao what

Radvylf Programs

TIL there are chromebook desktops

Ginger Industries

16:46

problem: Etch needs a package manager
solutions:
1. make a simple thing that downloads files from urls and copies them over
2. make a massive, overcomplicated, extensible modular package downloader to work with any and all future languages
I think yall can guess which I'm going to try to do

Radvylf Programs

Or 3. Don't have a package manager

For a small language, it's perfectly fine to just have people copy folders with libraries they need IMO

Ginger Industries

boooooring

besides, I love screwing myself over

Radvylf Programs

My wifi is literal sussy baka right now

My school's IT people have one job. I've had to click the "retry" button six times on that message

Step-by-step guide to programming in Rust:
1. Write code the way you normally would
2. Try to compile it
3. Google all the errors that it creates
4. Repeat for a few hours

5

DLosc

@RadvylfPrograms I initially read this as "My wife" and was very confused for a moment :P

Ginger Industries

17:07

In order to preserve my sanity I have decided to just make a simple package manager for Etch

I shall call it Waterjet

mathcat

2000

Waterjet 2000

that sounds professional

Ginger Industries

that sounds like a waterjet cutter

which is not what this is

New Posts

17:29

0

Q: Write a sine function

This challenge is fairly simple. Take in some value n and return sine of n, in both degrees and radians, approximated to 4 decimal points, and truncated after that. You are not allowed to use any built in trigenometric functions; you must purely use the taylor series Your code output should look ...

code-golf math trigonometry

hyper-neutrino

mm unenforcable rules and bad I/O go brrr

mathcat

"HaveProblemsEveryDay"

Etch

Transcript for