The Nineteenth Byte

okie

06:00

crap

it ran instantly

faster then bait webs

emanresu A

@exedraj Challenge: Calculate triangle numbers in 0 bytes (Vyxal)

exedraj

Vyxal sR, 0 bytes: `` (Try It Online!)

or Try it Online! if you prefer the syntax highlighting of an empty program ;)

okie

i thought i was getting rolled again

exedraj

there's only one program that does that

every other link to lyxal.pythonanywhere.com is just a normal program

oh hey @Razetime

Razetime

hi

emanresu A

06:10

lyxal as a program is my fault.

exedraj

@Adám #11 on lb

emanresu A

I only just noticed - new Flowey!

exedraj

emanresu A

Lol

What does it say next?

exedraj

it's a custom textbox I generated

emanresu A

06:13

O

exedraj

Adám

06:23

@exedraj I get email notifications too :-)

exedraj

@Adám I have a question: how do I make it so that digraphs are matched with their corresponding character in the language bar?

E.g. Q in Jelly has it's standalone, but also ØQ and ŒQ associated with it

the digraphs are separately documented in elements.txt

so how do I modify the APL part to recognise them?

Adám

06:36

@exedraj Ah, I see, I filtered them out, not realising how I had included them for Jelly. As you can see, it is a bit involved, but I'll get around to adding them.

emanresu A

It would be half funny and half sad if this was tagged with status-bydesign :p

@exedraj lyxal.pythonanywhere.com?flags=&code=%E2%87%A7%2C%E2%87%A9%…

Why do complex stuff?

exedraj

because I like my parallel apply

emanresu A

If you think about it, stack manip + structures in Vyxal is equivalent to chaining in Jelly

o/

exedraj

@emanresuA why didn't you tell me codemirror has things like ctrl + <click> to have multiple cursors?

Razetime

because you should read codemirror docs yourself?

exedraj

06:50

but I mean on the online interpreter

I just thought it was only colours

I didn't realise it was the whole entire editor

Razetime

yeah codemirror has a lot of good things built in

the entire editor component is chunky

tbf i think a lot of modules can be removed

would speed up the page

exedraj

I didn't realise the vyxal online interpreter could do that much

I suppose that explains why there's a lot of JS involved with it

and why I had some troubles properly integrating it ;)

okie

I have a idea for a very simple challenge

given 3 2D vector a,b,c , find a*n + b*m + c*r=0

bruh

and n,m,r is just number

exedraj

are we given n, m, r?

pxeger

no you have to find them such that they make 0, right?

okie

06:57

a,b,c is given

and find n,m,r

exedraj

ah

pxeger

n,m,r > 0?

because n=m=r=0 is a trivial universal solution

okie

hmmmmm

yea probably > 0

i think it's 1 to 1 test-answer?

pxeger

you can just solve simultaneously

using the inverse of the 3x3 matrix {a,b,c}

wait but there are infinitely many solutions

and also if they're integers only that's NP-complete I think?

okie

smallest a+b+c?

that more confusing then my life

which is very

Bubbler

07:03

The solution space is integer coordinates on an infinite line

so smallest a+b+c has 100% chance to be minus infinity

okie

but a+b+c > 0

pxeger

smallest absolute value, presumably

Bubbler

Oh.

That might actually work then

okie

wait will a,b,c>0 make some test no answer?

Bubbler

For some very specific kind of inputs, yes

You can say "you may assume an answer exists"

okie

07:05

(0,0),(1,1),(0,0)

Bubbler

(0, 0, 1) is a solution to ^

if you mean a>0 and b>0 and c>0 then no solution

okie

i could just say that 3 vectors do not parallel

yea a,b,c>0 i think

or we just a,b,c not equal 0

and get the closest answer to 0

Bubbler

@okie In that case there is no answer 75% of the time

pxeger

have we just renamed n,m,r to a,b,c?

okie

lol

i think so

Bubbler

07:08

Yeah, nonzero solution with smallest magnitude sounds good

pxeger

ok let the vectors be p,q,s then lol

Bubbler

btw it's a number theory problem

okie

I surely can't make test case, but anyway, I'll try

Sandbox Posts

0

A: Sandbox for Proposed Challenges

Sum of 3 Vectors code-golfnumber-theory Question Given 3 vectors a, b, c Find integer n, m, r where a*n+b*m+c*r = 0 and n,m,r are all not equal to 0 You can presume that 3 vector do not parallel Test case work in progress Rules no Standard loopholes any I/O case allowed, as long as it's clear an...

okie

It has been fricking long since i last posted a sandbox or somethin

I am literal inactive for over 2 month

I have yet another idea, which is chaining program, but I treat it like a for-fun idea instead of real idea

Neil

07:21

@Dudecoinheringaahing Retina 0.8.2, 38 bytes

Bubbler

@okie "closest" should be accompanied by a measure. Euclidean distance or Taxicab distance (essentially sum of absolute values)?

okie

@Bubbler fixed :D

Another idea:You make a code shaped like 0 and output a valid program shaped 1, which when ran, produce 2, and so goes on

score by how much number you can chain until your program produce something other then it should be

Neil

@Dudecoinheringaahing Retina, 27 bytes

okie

so that (shape) 1 produce 2, 2 produce 3 ...

But i don't know how to specify how numbers should looks like

Neil

@Dudecoinheringaahing Charcoal, 6 bytes: Ｉ⌕Ａθ⌈θ

@Dudecoinheringaahing Charcoal, 24 bytes: ＮθＮηＩ⟦÷θη﹪θη⁺θη⁻θη×θηＸθη

Anush

07:30

have a list of strings. Is there a fast algorithm to find the most commonly occurring substring of length 4?

pxeger

commonly occurring as in, present in the most strings, or as in, present the most times overall over all of the strings?

Neil

@Dudecoinheringaahing Charcoal, 11 bytes: ∧⁼θ⮌θ⬤θ⁼ι⮌ι

Anush

@pxeger whichever is easier to do quickly

There is a painful quadratic time hash method of course

pxeger

I can think of a simple O(n) algorithm... with O(n^4) memory complexity

Bubbler

If you mean contiguous substrings, it is simple to collect all length-4 segments and count them, no?

pxeger

07:39

yeah that's what I was thinking of

Bubbler

That is obviously linear time/space in total size

pxeger

oh hang on yeah that's linear memory as well oops

Bubbler

Also, if all strings are alphabetic, another option is to keep counts in int a[26][26][26][26]. 26^4 is less than a million and you don't need to keep entire list of strings in memory

pxeger

07:56

CMM: I am creating a language where input types must be specified as command-line flags (e.g. code is a.repeat(b) and flags are -i string -i int. This is allowed, right? (it seems like an extension of consensuses codegolf.meta.stackexchange.com/q/11223 and codegolf.meta.stackexchange.com/q/14337)

(by allowed I mean without adding to the byte count)

Bubbler

Yes. There are already some existing languages that require something similar

e.g. Flurry requires a three-char flag to specify how to take input and how to format output and return value

Brain-Flak also has some flags to switch between ascii and numeric I/O

Anush

Thanks all

okie

08:12

just discover that i am marked as bot in popcat lol

was testing on it

pxeger

what's popcat?

okie

a no-propose website

does that count as advertising

hmmmmmmmmmmmm

pxeger

~~well there goes my afternoon~~

okie

it have a non-obfuscated bot checking system

wth

Bubbler

How does it detect a bot

pxeger

08:17

consistency in clicking?

they should make you complete a captcha on every click

Bubbler

Lol

I do guess a good enough autoclicker will bypass any kind of check though

unless it blocks all humans too

also some humans are good at consistently clicking

pxeger

not 24 hours a day

well

perhaps I underestimate some humans

certainly not 168 hours a week

okie

@Bubbler It have a therhold of 800, and breaking it 10 times without lowering speed

will get you marked as bot

it does not tell you

just simply not submitted click

Bubbler

That's enough to mark many humans as bots :P

okie

yes

it's also client side

while being not obfuscated

excellent

pxeger

08:22

it may well be server-side too

Bubbler

Solution: Clear cache or cookie or localstorage?

okie

it might be

but the bot tag is also on client side

and it have a very weird reset mechanic

which is not activated normally

lol i think i just reseted my bot tag, and de-bot myself

pxeger

CMC: bijection between positive integers and pairs of positive integers

Bubbler

@pxeger Cantor

Too lazy to code

AviFS

@pxeger Yeah that zigzag they use to enumerate fractions

There are a lot of elegant tree... with a hyphen-german-twonames

Stern-Brocot

And Calkin-Wilf, too

pxeger

08:32

awesome

I asked the same CMC about a month ago and got no answers

AviFS

Not totally the same, because Stern-Brocot shows each reduced fraction once

So (1,2) will appear

okie

e

AviFS

But never (4,8) or (3,6)

pxeger

I knew Bubbler would give me some info lol

okie

time for me to disappear again

until tomorrow

pxeger

08:33

\o

AviFS

Have more to say, but gtg

Oh, but so I meant to relate to the related problem here:

CGCC: Output the nth rational number according to the Stern-Brocot sequence

Again, each reduced pair shows up once, so it's not an enumeration of all of them

Bubbler

Bit interleaving also works for golfing purposes

Razetime

08:46

@pxeger You might like the New Order Series

emanresu A

09:19

@Razetime See CM 6

it is baby

exedraj

@okie but what if I'm just really good at keyboard mashing?

I noticed that pressing any key is equivalent to clicking

emanresu A

w

fweq

Sorry

Was spamming popcat and switched tabs

Razetime

09:54

@emanresuA baby editor? cool

emanresu A

Yes

edit babies

emanresu A

10:17

o/

R-D, Netherlands

231 1 7

Very sus

Very very sus

Neil

12:03

58699102: Retina 0.8.2, 3 bytes

Codidact Posts

12:52

New Posts - Challenges - Code Golf: Are All Elements Equal?

posted on August 11, 2021 by Razetime

Challenge Given a list of integers >= 0 , check if all of them are equal. Tests [1,1,1,1,1] -> true [0,1,1,6,7] -> false [1] -> true ...

Redwolf Programs

Gotta love it when the link to the thing you're supposed to be writing about isn't actually a link

Razetime

@RedwolfPrograms actually a rickroll?

Redwolf Programs

No, it's just ordinary text colored blue and underlined

Aaron Miller

F

Jo King

you ever see a link on a printed out document and feel inexplicably sad?

pxeger

13:05

occasionally

user

Far too often

Sometimes it’s a pdf that you think you can copy from but since it’s scanned it doesn’t work properly

Redwolf Programs

@JoKing I just tap the links with my finger and a new piece of paper magically appears next to it, don't you? :p

exedraj

@RedwolfPrograms and it isn't just underlined text without explicit colour? ;p

pxeger

@exedraj no it has no explicit colour, only an explicit color

exedraj

frick you with your american spelling

Redwolf Programs

13:18

I dunno, seems pretty ambiguous as to whether that's intended to be a link :p

exedraj

well done for missing the obvious joke

Redwolf Programs

I didn't miss the joke lol

pxeger

I missed it

Redwolf Programs

I just wanted to point out how obviously this was supposed to be a link

exedraj

Apr 13 at 23:26, by Redwolf Programs

I have synesthesia and see words and letters as colors :p

this is crucial TNB lore

how don't you know this?

pxeger

13:20

ooohhhh

I did know that lore

but I didn't make the connection

Redwolf Programs

Actually I didn't either

exedraj

in other news, I just tried to from sympy import sympy when I wanted to from sympy import Rational

Redwolf Programs

I thought Lyxal was just joking that I was trying to click on underlined text like an idiot :p

exedraj

3 mins ago, by exedraj

well done for missing the obvious joke

pxeger

APL users may find this interesting: mlajtos.mu/posts/new-kind-of-paper-2

Adám

13:32

@exedraj Isn't "frick" in that context skirting on "not nice" language?

pxeger

to whom?

exedraj

@Adám I have some very "not nice" opinions on American spelling at 11:34pm

Adám

@pxeger You.

user

@Adám Since it's clearly a joke, not really imo

pxeger

1. I'm not American, so I'm not offended
2. If I were American, or if it were an insult to British spelling, I wouldn't be offended
3. ...because it looks like it's, at worst, a minor insult to American spelling, which (I'm fairly sure) is not a person
4. It was a harmless joke

Redwolf Programs

13:38

It would take too long to make an account named "American Spelling" just for the joke, wouldn't it :/

pxeger

brb, going to hijack my existing sockpuppet account

user

You could rename one of your sock's accounts, then change the parent

ninja'd

exedraj

@user out of context that sounds very wrong

Troy McClure

Hi, I'm Troy McClure

user

Hi, Troy McClure!

Redwolf Programs

13:39

Might we know you from instructional guides such as "mothballing your battleship" and "dig your own grave and save"?

Troy McClure

Who was that guy?

dammit it seems to have got all messed up

._. it seems like I'm stuck being Troy McClure until {cache_clear_o'clock}

that'll teach me

Razetime

@TroyMcClure this recently came up in the matrix chatroom.

Redwolf Programs

@TroyMcClure Not so bad of a punishment :p

Razetime

the creator of BQN posted it

exedraj

@Razetime I do love me some bacon

Adám

13:45

@TroyMcClure Thanks. Cross-posted to apl.chat

Troy McClure

could someone register something like 19.chat so I can type it equally quickly?

user

Why not use your own server?

19.pxeger.com or something?

Redwolf Programs

I just type the letter "c" and the rest autocompletes lol

Troy McClure

that's not as cool as apl.chat

@RedwolfPrograms only in the URL bar (besides, that's not a problem - I have it bookmarked anyway). What if I want to type it in the chat box of TNB or somewhere else

exedraj

@TroyMcClure just use a url shortener: tinyurl.com/tnbroom

ez

Troy McClure

13:47

1 min ago, by Troy McClure

that's not as cool as apl.chat

exedraj

it's just as cool

if not cooler

user

@exedraj That looks like tn broom lol

exedraj

@user well the suffix cgccse wasn't avaliable

so that's what I came up with

Adám

@TroyMcClure That's taken, but 19b.chat is available and pretty cheap too ($8.22 / year, renews at $22.64).

cgcc.se is available too.

cgcc.chat is same price as 19b

user

cgcc.chat is a lot nicer

Redwolf Programs

13:52

Is tnb.chat available?

user

cgcc.se feels like it should go to the main site instead of chat

Redwolf Programs

Or a swedish code golf site

exedraj

the.tnb

Redwolf Programs

tnb://tnb.tnb/tnb

All we have to do is create a custom URL protocol, get major browsers to add it, pay $300k for the tnb TLD, then register tnb.tnb

user

Time for a tnb protocol: you compress a message as much as possible and it's up to the receiver to figure out what happened

Troy McClure

13:53

@RedwolfPrograms tnb+tnb://tnb:[email protected]/tnb.tnb?tnb=tnb&tnb=tnb#tnb

3

user

-1 not enough tnb

Troy McClure

@user those are all the available components in URLs; would you like me to petition the IETF to add more?

Redwolf Programs

Why did you add a .tnb file extension, but not a .tnb subdomain?

user

@TroyMcClure Yes please

Troy McClure

@RedwolfPrograms I have absolutely no idea what you're talking about. waves Men In Black magic wand

phew, I'm back to pxeger

yay

user

14:01

Who are you and what did you do to Troy?

Adám

@RedwolfPrograms Yes, but a bit more pricey.

pxeger

@user who's Troy? I don't remember him from such nature films as Earwigs: Eww! and Man vs. Nature: The Road to Victory...

Looks like it's Embargo Lift time lmao:

user

sus

Redwolf Programs

14:16

@RedwolfPrograms Well, I've tried for an hour and concluded it's a bit difficult to answer questions about something you're supposed to have read if you can't actually read it

If it wasn't the day before it was due I'd just email one of the teachers about it, but I'm sure since it's a thing you do over the summer other people will forget anyway

I'm fine with a zero if a bunch of other people get one too I guess

Wezl

^ lol

user

Imagine doing your summer packets

This post made by having-teachers-who-forget-to-collect-them-unless-you-remind-them-and-you-then-get-death-stares-from-the-rest-of-the-class gang

Redwolf Programs

I've got a lot of work to do on RTO, so that takes precedence over school until it actually starts lol

user

Only like two weeks left :(

Redwolf Programs

School starts tomorrow for me :D

user

14:30

I'm so sorry for your loss :P

Redwolf Programs

I like school, actually :p

user

Ah, you've been indoctrinated by them

Redwolf Programs

I couldn't care less about the learning part, though

user

Don't worry, kid, you'll soon hate it

@RedwolfPrograms Um, what else do you do at school?

Redwolf Programs

Interact with humans I know, and spend all of class doing CGCC stuff

user

14:31

lol

It's my senior year now, so I can probably actually get away with goofing off now

Redwolf Programs

I'm planning on knowing everything for most classes beforehand, which has worked with about a 70% success rate so far :p

user

Big brain

CMQ: What's the worst you've ever screwed up your grades?

Redwolf Programs

Not realizing there was a separate tab with a whole bunch of additional assignments for one class...so I didn't do any of them

Wheat Wizard

I miscounted the number of essays I wrote / had to write for a course and ended up submitting only 2 instead of 3.

user

:(

In 6th grade, a bunch of kids started calling me a nerd for whatever reason. Being the big brain 500 IQ genius I believed myself to be, I decided to tank my grades just a little and get a B or high C for all my classes. I'd overestimated myself and instead got D's in most of them

PyGamer0

14:42

@user last year (like in march final exams)

technically this year march

Wezl

@user 2020 march I did like zero assignments for math. I'm sure there's an excuse, but I still can't find it. It was the beginning of covid so it didn't cause any lasting problems

@user lol I have 4 weeks left (MD,US), sorry for your loss :P

Dude coinheringaahing

@RedwolfPrograms I enjoyed the last 2 years of school the most, and I didn't mind the 5 years of high school before that (our "high schools" go from your year 6 to year 12). Now that I'm out of school, I realise how much I miss the structure tho

user

Freshman year was the best, sophomore was okay but not too bad, and the only good thing about junior year was that I didn't have to go to school in person

@Dudecoinheringaahing Being free to do what you want is a bad thing?

Dude coinheringaahing

14:57

Yes and no. You sort of don't know what to do with yourself :P

The paradox of choice definitely becomes more of a thing :P

user

@Dudecoinheringaahing Easy answer to that: Golf :P

Dude coinheringaahing

It's no coincidence that I went from 14k in mid-2020 to 40k now :P

user

Oh wow

Dude coinheringaahing

This year alone, I've gotten 18.9k, which is 6k clear of everyone except Arnauld. That's literally because I've had very little to do over the past 18 months :P

user

Dennis is on that page lol

I swear he'd repcap every day if CGCC were as active as SO despite not posting anymore

Dude coinheringaahing

15:05

how has he gotten more rep this year than Unrelated? They post fairly regularly, with high voted answers O.o

Same with Shaggy

Aaron Miller

15:57

Do y'all think I should implement GoL in Vim?

Redwolf Programs

If you want a ton of upvotes, then yes :p

Aaron Miller

jk I just did :p

Wezl

okay I upvoted you multiple times using my upgraded version of SEchat that has upvotes, but unfortunately it is incompatible with all other versions so 68% of the time it flags your message and 62% of the time it does nothing

Wheat Wizard

68 + 62 = 130.

user

40% of the time, it changes the fabric of reality to make 68 + 62 + 40 add up to 100

Aaron Miller

16:07

0

A: Shortest Game of Life

Vim, 549 bytes Go0<Esc>mmo"cyl'm:if "<C-v><C-r>c"=="@"||"<C-v><C-r>c"=="o"<C-v> norm <C-v><C-v><C-v><c-a><C-v> en<C-v> <Esc>^"id$i'm"myl`cyl:if "<C-v><C-r>""==" "&&<C-v><C-r>m==3<C-v> norm r+<C-v> elsei "<C-v><C-r>""=="@"&&<C-v><C-r>m<2<C-v> norm ro<C-v> elsei "<C-v><C-r>""=="@"&&<C-v><C-r>m>3<C-v>...

user

Odd, the gradscript tells me that's 825 UTF-8 bytes, 825 chars even though it's just 549

Of all the different ways to quote there are, that has to be one of the ugliest

Aaron Miller

@user In my Vim answers, I replace unprintables with things like <Esc> or <C-r> to make them more readable [citation-needed], which increases the apparent byte count, but the TIO code has the actual unprintables.

user

Ah, makes sense

pxeger

16:26

@user `string' would like to speak to you

Aaron Miller

@pxeger ''string'' would like to speak to you

(It's not ugly so much as cursed, but still)

Dude coinheringaahing

Don't even talk to me if you aren't using “"”string'`‘’

Wezl

@user IMO `print 1 + 3` is about as bad

it certainly depends on the typeface. monospace fonts are more likely to support 'text' and `text' because of ASCII and programming reasons

Aaron Miller

@Dudecoinheringaahing “«"”string'»`‘’

Wezl

*(^^string%#

just press the buttons

open-quotestringclose-quote

Dude coinheringaahing

16:35

string string string, where the first and third strings are the actual characters string and the second being the string (e.g. string Hello, World! string)

Aaron Miller

string string string, where the first and third string are the string, and the second being the actual characters string (e.g. Hello, World! string Hello, World!)

Wezl

^ that's what I originally misread Dude's message as

Aaron Miller

Me too

hyper-neutrino

idea: the first character is the delimiter delimiter, then it scans until it sees the delimiter delimiter and everything between those is the delimiter, and then it scans until it sees that for the string

so ebcehellobc is "hello" because the e is the delimiter delimiter which makes bc the delimiter, then e can re-appear in the string perfectly fine, and bc closes the string

Wezl

wait! but you need something to tell you whether there is a string

and it must be customizable ofc

hyper-neutrino

16:46

ok the first character in the program is the delimiter delimiter delimiter, and then it reads until it finds the delimiter delimiter delimiter which tells you what the string delimiter is

3

so if your program is abcahellobcdefbcabcdef then you have a..a as the delimiter^3 which makes bc the delimiter^2, so hello is normal code, bc...bc makes def the delimiter, and then abc is a string closed by def again

Aaron Miller

Delimiters all the way down.

pxeger

@hyper-neutrino this would be reasonable if the delimiter-delimiter were constant (like """ or something?)

Wezl

17:10

yeah lua has something like this [(=*)[string]\1]

DLosc

17:43

stasoid has no gold badges but has earned the silver Necromancer badge 111 times O.O

110 of those are for Add a language to a polyglot

I wouldn't be surprised if 111 is the most Necromancer badges of anybody on the site. I checked a few top users and the most I saw was 60-something.

Wheat Wizard

Yeah it almost certainly is.

Who had the 60-something?

DLosc

Who else? ;)

Martin Ender is close behind with 58, you've got 52, and Jo King has 47.

It's also interesting to see the high-rep users who hardly have any: Arnauld has 5, Neil 4, and Luis Mendo 3. I suspect it's because they usually just answer new questions.

Dude coinheringaahing

Counts of people with Necromancer badges

And a version that works for a given badge name

DLosc

18:00

Nice!

Dude coinheringaahing

Fun fact: all my SQL knowledge comes from SEDE queries :P

DLosc

Haha--the only two names I didn't recognize on that list (Potato44 and Chance) got essentially all of their Necromancer badges from... Add a language to a polyglot. What a surprise. :D

Wheat Wizard

19:44

Does anyone understand how W loops work in Gol><>?

emanresu A

19:55

No

Dude coinheringaahing

21:36

Totally not a suspicious link: suspicious.link

3

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