The Nineteenth Byte

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00:00

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Q: CGAC2022 Day 1: Let's build a chocolate pyramid!

Following last year's event, we're doing Code Golf Advent Calendar 2022! On each day from today (Dec 1) until Christmas (Dec 25), a Christmas-themed challenge will be posted, just like an Advent calendar. It is a free-for-all and just-have-fun-by-participation event, no leaderboards and no prizes...

Seggan

first upvote :D

caird coinheringaahing

02:13

Okay, just for future reference: this chat room does allow swearing, so long as it isn't directed towards a specific person. General swearing, fine, but keep it reasonable. Directed swearing (e.g. "f**k Bob Smith, I hate them") is not okay. We've had a few flags raised recently about this, so I thought I'd reiterate our policy

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forest

Yeah that Bob Smith is such an asshole. Screw that dude.

4

caird coinheringaahing

Smh, what did I just say? :P

forest

:D

Bob Smith

02:29

@forest Come on, that was uncalled for :(

user

@cairdcoinheringaahing You said "f**k Bob Smith, I hate them" isn't okay. It's okay to say anything else (e.g. "f*ck Bob Smith, I h*te them") though, right?

@BobSmith Fuck you.

Bob Smith

Hey, that's explicitly disallowed! (but be careful, if someone flags that you'd prolly get kick-muted)

user

Btw, what does reasonable mean? Should we use asterisks for certain swear words or should we just keep it to like <2 swear words per sentence?

Radvylf Programs

Asterisks don't really make a difference, we're all old enough to know what the original was

I think the point is to just do it in moderation

user

Fine, I'll use homoglyphs: c => ϲ :P

Radvylf Programs

02:34

Occasionally using profanity's perfectly fine, we're all teens/adults here, but in excess it's annoying and gives the room a somewhat immature appearance

user

> gives the room a somewhat immature appearance

Radvylf Programs

(my personal opinion on profanity is that it becomes kind of useless if you use it all the time; the point is to add emphasis, so saving it for every once in a while maintains that)

user

Which it definitely wouldn't have otherwise :P </endjoke> got it

Hmm, profanity inflation

That'd fit what's going on in the world right now

Newly Featured Posts

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Q: Interstellar Cabbages, Wolves, and Sheep

The Cabbage, Wolf, Goat riddle with a twist! Backstory: There’s an intergalactic river than needs to be crossed! Being a space-ferryman you’ve offered some aliens on your small space ferry that can only carry two entities: you and a passenger. However, you know that because politics, some of thes...

code-golf puzzle-solver

caird coinheringaahing

03:00

@user Given the age limits for engaging with the site, I'd like to hope we're all mature enough to know whne is and isn't appropriate to use profanity

After all, I will happily swear, when I think it's appropriate. I have no issue with profanity, when used appropriately. It's when flags get raised that I feel the need to step in and make it clear what our policy on swearing is

Adám

05:05

@forest No he's not; he's a very respected APLer.

Bubbler

06:42

CMP: If a challenge asks to output two values X and Y, is it OK to write two functions so that one returns X and the other returns Y?

context

New Posts

07:20

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Q: Encoder/Decoder for efficient number storage!

Description Inspired by this question, write a program/function to encode a number and a program (possibly the same as the first) to decode a bitstream in variable-length encoding as follows (taken from that question's answer, slightly modified): Represent the string x using the following encodi...

code-golf encoding

Aiden Chow

07:40

@Bubbler so like u write two function in one program?

Aiden Chow

08:19

new lotm btw?

seems like its pip right

Bubbler

@AidenChow two functions in a single submission but pretty much yes

mousetail

10:45

Is it possible to create a infinite loop in regex?

UndoneStudios

11:05

hi

lyxal

howdy

UndoneStudios

@JoKing because it's practical for maniacs :)

gtg

lyxal

unhowdy

Jo King

it's more that Seed is technically an extension of Befunge, which surely means it should be less practical?

graffe

11:32

hello!

Rahul Verma

12:12

@graffe helllo

mousetail

12:37

I found a odd fibbonochi variant: f(x)=f(x-2)-f(x-1). It eventually stabilizes in alternating between negative and positive fib numbers

Neil

@mousetail no, it's explicitly banned

@mousetail so f(x)+f(x-1)=f(x-2)? yeah, that's just Fibonacci backwards

mousetail

Oh

That makes sense

Rahul Verma

13:59

does anyone have a slick C++ code for todays AoC day 1

i am having trouble taking input

Ginger

oh right CGAC has begun!

graffe

14:17

@mousetail that's interesting.. what are the first few terms?

@RahulVerma I completely forgot AoC! Thank you

Radvylf Programs

@graffe If starting from the standard 0, 1, then 0, 1, -1, 2, -3, 5, -8, ...

graffe

nice

looks just the same as the fibonacci series

except for the signs

Radvylf Programs

I've worked with that sequence before, Ash's Fib built-in supported negative numbers

graffe

are there any esolangs that support integration?

Radvylf Programs

No

graffe

14:26

:(

I wish I could draw a bigger and sadder face

Radvylf Programs

Why would you expect a class of languages typically aiming for simplicity and minimalism to have symbolic math capabilities in the first place lol

graffe

@RadvylfPrograms I meant numerical integration :)

because it's cool to do hard things in a golfey way!

sympy needs about $10 millions dollars on it

it's in a sad state

supported by about one person

Radvylf Programs

I mean, if you count golfing languages as esolangs (I don't, but some do), I think Vyxal has it

graffe

aha!

Radvylf Programs

Let me guess, you don't actually care about if it's an esolang, you just want someone else to do the work of finding an integration library

graffe

14:30

hmmm

bad guess

PyGamer0

14:51

@graffe how would that work?

graffe

@PyGamer0 I guess <strangesymbol> would have both that it is an integral and the limits coded in somehow

I don't really know though

mousetail

How though? You'd need to specify the accuracy

I beleive most "numerical" integrators are actually semi-symbolic

graffe

@mousetail I am not sure that is right. The trapeziodal method I learned at high school just needs you to be able to evaluate the function

mousetail

It can be pretty far off though depending on the function

graffe

yes

mousetail

14:57

if you have a rapid sine way that matches your sampling frequency

graffe

but do the other methods need anything else apart from function evaluation?

mousetail

The question is just: At how many points do you evaluate the function?

graffe

@mousetail well I guess a clever method can try to guess by adding points until it doesn't seem to make much difference

mousetail

Maybe

graffe

I agree with the maybe

mousetail

14:59

Now go implement that in vyxal

graffe

I can't print "hello world" in vyxal!

PyGamer0

@graffe kH

graffe

:)

PyGamer0

maybe i can implement it in vyxal

graffe

that would be cool!

I just saw that general swearing is allowed here

why is no one taking advantage of that??

PyGamer0

15:02

@graffe but i Dont know that method :p

Radvylf Programs

@graffe Since it's always been allowed

graffe

pick one from here :) en.wikipedia.org/wiki/….

mousetail

Fuck general swearing

graffe

indeed :)

coding mini task.... how many integers are there less than 128 with no factors less than 50?

Radvylf Programs

16

Wait no

Wait yeah

"no factors less than 50" here just means "is not less than 50"

You won't get a composite number filling that criteria until 2500

PyGamer0

15:09

@graffe it goes over the top of my brain :(

graffe

are they all prime numbers?

Radvylf Programs

Yes, that's just the number of primes from 53-128

graffe

15:22

@RadvylfPrograms hmm... how about 1024 and 20?

Radvylf Programs

Well, how would you approach it?

graffe

@RadvylfPrograms factor all the numbers from 1024 to 21?

:) see edit

Radvylf Programs

@graffe Then do it :p

graffe

there are 164 primes in that range

Radvylf Programs

Since 20 ** 2 is less than 400, there are composite numbers meeting that property

graffe

15:24

well that's the coding challenge :)

we need a number bigger than 164

PyGamer0

@graffe i hope this works

just i dont know how to call the function lol

graffe

:)

@RadvylfPrograms the answer is 173 I believe

Ginger

something here doesn't seem right

but I can't quiiite put my finger on it

Radvylf Programs

15:40

You have it set to unread only

Ginger

<whisper>the point is that I have 2 unread but the number says 3</whisper>

Seggan

yeah the new inbox is annoying, i have to manually mark as read

Radvylf Programs

That's always been a thing. Multiple comments/answers are combined into a single notification box.

There are likely two comments on that CGAC thing

Ginger

there are

but I didn't know that was a thing

also, can someone ping 66.39.27.16 for me?

Radvylf Programs

@Seggan Yeah, it should do what other sites do and get rid of the red number when you open the inbox, while still tracking what's read and unread

PING 66.39.27.16 (66.39.27.16) 56(84) bytes of data.
64 bytes from 66.39.27.16: icmp_seq=1 ttl=50 time=45.3 ms
64 bytes from 66.39.27.16: icmp_seq=2 ttl=50 time=44.5 ms

Looks good

Ginger

15:43

hmmmmmmmmmm

my browser isn't getting a response

(that IP address is for thecodelesscode.com)

Radvylf Programs

Maybe their HTTP server is down but the server's still up

Ginger

;-;

New Posts

15:59

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Q: Make the cheapest cut

“Cut” a matrix of integers on the line where the sum of the absolute differences of “severed” neighbors is the least. Example Consider this matrix: 1 2 -4 5 -1 3 2 -2 0 It can be cut in 4 places, here shown by lines lettered A–D: A B ╷ ╷ 1 ╎ 2 ╎ -4 C ---╎----╎---- 5 ...

code-golf matrix

New Posts

16:11

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Q: Join Columnar Strings

Write the shortest possible program or function that will join a list of columnar strings. For this challenge, columnar strings are defined as one-character-wide strings spanning across multiple lines. Each character, except for the last one, has a newline character. Some examples, separated by -...

code-golf string

Sandbox Posts

16:23

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A: Sandbox for Proposed Challenges

Smallest and largest 100-bit square with maximum Hamming weight. In the binary representation of a \$k\$-bit square number \$n^2, k\gt1\$ not all bits can be \$1\$. The maximum number of \$1\$-bits (Hamming weight, \$B\$ for short) is given in A357658, but only up to \$k=95\$ bits. An example of ...

Ginger

16:35

it is turning out to be quite difficult to give Niko a santa hat

I made a hat that I like but getting Niko to wear it is the hard part

Seggan

> All presents must be center-aligned due to magical physics issues

makes perfect sense

Ginger

eh, I'll just switch back to my normal pfp

Radvylf Programs

Please do I keep getting you confused with Niko

Ginger

done

isn't it beautiful? :p

mousetail

@Seggan It's actually a technical restriction of the COBOL database santa uses

Ginger

16:47

he's making a table
he's sorting it twice
SELECT * FROM children WHERE behavior = "nice"
SQL Clause is coming to town
he sees you when you're sleeping
he knows when you're awake
he's copied on /var/spool/mail/root/
so be good for goodness sake

8

Seggan

@Ginger come to the edge lmao

Ginger

holy multiple pings batman

Seggan

oops

in The Edge of Propinquity, 2 mins ago, by Seggan

**Write a song based on "Santa Claus is coming to town" but using SQL**

Verse 1
Santa Claus is coming to town
He's gonna have a database
To store information on us all
That's why he's coming around

Chorus
Oh, Santa Claus is coming to town
He's gonna set up a database
To store information on us all
So we better watch and observe

Verse 2
He'll use SQL to store the data
From all the boys and girls
He'll query it when he's ready
To see who's been naughty or nice

Chorus
Oh, Santa Claus is coming to town

> He'll use the data to make decisions
Deliver gifts to those who deserve
He'll use JOINs and GROUP BYs
To make sure everyone gets what they need

:D

Ginger

17:35

fun fact: the sum of all positive whole numbers is -1/12

Radvylf Programs

Yeah that's an old one

I saw a pretty cool explanation of where the error in that is once

Has to do with reordering infinite lists of things I think

Ginger

wacky

Seggan

18:02

@RadvylfPrograms wait its erroneous?

DLosc

18:24

@Steffan Do you want to post the Pip LotM thread, since you wrote the nomination? Otherwise I will.

(Wow, most of the nominations have multiple downvotes. Didn't expect that.)

hyper-neutrino

possibly strategic? just speculating

by strategic i mean people downvoting other noms for the one they want to be relatively higher. just a guess, could also be people just don't think the language would make a good LotM

DLosc

Yeah, probably some of both

Ginger

18:39

CMM: If a team of people write an answer that satisfies a bounty with no deadline, is the reward divided amongst them or given wholesale to each one?

DLosc

Probably divided, but you'd have to ask the person awarding the bounty.

caird coinheringaahing

18:56

Yeah, there's no hard and fast rules for deadlineless bounties, it's all up to the offerer

Steffan

19:23

@DLosc I'll post it

Radvylf Programs

@Seggan Well yeah, you can't really meaningfully add up an infinite amount of numbers (assuming they're diverging) in the first place, and even if you could, adding up a bunch of positive integers wouldn't give you a negative non-integer

-1/12 and similar just result from subtle errors in how infinite sequences are manipulated

@Ginger And even if it wasn't divided, the recipient could divide it themselves

Steffan

SHould we unfreeze chat.stackexchange.com/rooms/137105/pip ?

DLosc

@cairdcoinheringaahing ^ Yes please

New Posts

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Q: Language of the Month for December 2022: Pip

In accordance with our meta agreement, since one candidate received more votes than the others, we have a new featured language! Throughout December 2022, our Language of the Month will be: Pip What's a Language of the Month? See the meta post for nominations. In short, during December, those w...

discussion language-of-the-month

DLosc

@Steffan BTW you don't need to give me any bounties for my 1st and 5th Pip answer in December ;)

Unrelated String

19:43

when i saw this on starboard, without line breaks, i thought it was like quoting a caster in some kind of database competition
and was very confused when i got to line 3

Radvylf Programs

@Ginger This actually reads really well, "select star from children where behavior is nice" has the right meter even

You have to pronounce "SQL" as "sequel" though

DLosc

@UnrelatedString Lol

@RadvylfPrograms As you should :P

Radvylf Programs

I'm in the "squirrel" camp

Which I guess works too in some accents

DLosc

@RadvylfPrograms Hmm, I do like squirrels... Make a language called SQRL and I'll call it that

Unrelated String

hell yeah

Radvylf Programs

19:49

IIRC I've gotten into a pretty lengthy argument with someone here over whether my pronounciation of squirrel is actually one syllable though lol

DLosc

Sep 8, 2021 at 17:16, by Browncat Programs

I pronounce SQL "squirrel"

Aug 22, 2021 at 20:34, by Browncat Programs

Just like how I don't actually pronounce "SQL" as "squirrel"

Well which is it? Make up your mind :P

Radvylf Programs

In real life I plan to just say ess-cue-ell but I've never actually had an opportunity to discuss database query languages out loud :p

CMQ: Perfect faucet control?

Ideally with support for both degrees of freedom

DLosc

@RadvylfPrograms I think ess-cue-ell is a reasonable way of pronouncing "SQL," but "SQL Server" is only ever "Sequel Server." Pronunciation conventions are an odd thing.

Radvylf Programs

Wait is it? I just say "esscuell sever" in my head

DLosc

IDK if there's an "official" pronunciation, but everyone I've heard pronounce it says Sequel Server ¯\_(ツ)_/¯

hyper-neutrino

19:56

@RadvylfPrograms generally I'm used to and like the type that has one handle that you pull outwards to increase pressure and rotate around for temperature control

same for both showers and sinks, though for sinks i guess it would be upwards for pressure instead

Radvylf Programs

My shower just has one of the dumb ones where you can either have maximally cold water at any flow rate or any other tempature of water at max flow rate

Ginger

@RadvylfPrograms hey wait a minute

Radvylf Programs

@hyper-neutrino Oh that's a good one

@Ginger Yes we're discussing an xkcd

Ginger

hahaaa

Radvylf Programs

Wdym

Ginger

20:00

CMQ (unrelated): Is there a way to extract the seed of a mersenne twister, presuming you have unlimited access to it? (I'm trying to get a seed to make the generator give a specific output)

Radvylf Programs

Yes, there's a lot of research into it

Ginger

then how do you do it

Radvylf Programs

I think the person (forgot their name) who figured out how to do stuff with Seed has a pretty good blog post on it

Or maybe it was Malbolge

Idk, someone who did something wrote a blog post all about reversing the mersenne twister

Ginger

if yoy can find it I will be very happy

hyper-neutrino

you're probably thinking of kamila szewczyk

emanresu A

20:03

And/or feersum

Ginger

got the guide

Radvylf Programs

@hyper-neutrino Yep, 90% sure that's them

hyper-neutrino

I don't recall feersum ever publishing how he did it plus i think kamila beat it anyway

Ginger

alright, found a tool to do it

thamks

hyper-neutrino

unfortunately the link in her comment seems to be dead

github.com/kspalaiologos/writings/blob/main/p1.md

Seggan

21:21

It's okay, they can figure out which control positions produce scalding water via a trial-and-error feedback loop with a barely-perceptible 10-second lag.

Radvylf Programs

Yep

pxeger

I can't think of many non-non-confusing tap controls that I've encountered

Radvylf Programs

^

Seggan

^^

caird coinheringaahing

I just heat the water with my mind

Radvylf Programs

21:23

I mean maybe I'd get if he'd said "bad", since there are certainly plenty of poorly designed ones, but "confusing"?

hyper-neutrino

easiest is to just only have one setting, on or off

that certainly isn't confusing

Radvylf Programs

It's worded as if all faucet controls known to date are confusing, and that making a non-confusing one is some sort of difficult task

DLosc

Having separate hot and cold knobs is not confusing unless the labels get switched

Seggan

@hyper-neutrino but some people like cold water, others like hot

i used to be of the cold type before i discovered boiling

Radvylf Programs

Yeah but it's still not confusing

hyper-neutrino

21:25

choices are a luxury

Seggan

@RadvylfPrograms imo the most confusing ones are the automagic ones

youw swipe your hand and nothing happens

Radvylf Programs

@Seggan Do you have a tanked heater + recirculating thing? 'cause in my house it takes sometimes upwards of several minutes for the water to get just warm

Seggan

@RadvylfPrograms idk what we have, but it takes at most a minute for my water to get hot

usually abt 15 secs

oh wait yeah we have a tanked heater

Radvylf Programs

(I've got maybe the worst setup when it comes to quick hot water though, that being a base model tankless heater, no recirculation, and a giant house with basically no insulation on anything)

Seggan

ouch

Radvylf Programs

21:28

You can put your hand up to an outlet cover on an exterior wall and feel the outside temperature. If it's windy sometimes you can tell.

Seggan

yikes

i have to go outside to feel my temp, even the garage is partially insulated

Radvylf Programs

My garage is just plain outside temperature (and it's worse since our dryer is there, since the house builder was too lazy to add a laundry room or hookups for laundry stuff anywhere except the middle of the garage wall, so any warm air which lingers in the garage gets vented outside by it)

DLosc

@RadvylfPrograms #murica

Ginger

@cairdcoinheringaahing ~~stop flaunting your mod powers~~

DLosc

21:44

@Seggan The water from the tap is cold. If you want it hot, get out a pot and heat it yourself. :P

~~Alternately: The water from the tap is hot. If you want it cold, get out a pitcher and refrigerate it yourself.~~

caird coinheringaahing

@Ginger That's not a mod power, that's a bonus I got when I upgraded my mind to be able to send packages with my mind

Back me up here @JoKing :P

Jo King

i actually got the power to distinguish the sound of pouring hot water vs pouring cold water

Ginger

you must be joking :p

caird coinheringaahing

@JoKing Oh neat, I was looking at buying that mod power

Ginger

do you have mod power loot crates or smth

caird coinheringaahing

21:54

Yeah, we get one per month. The longest serving mods are the most powerful people in the world :P

Ginger

so is jon skeet a shadow mod or something

hyper-neutrino

jon skeet is the person who provides the mod powers

Ginger

~~canonically mathcat stole his rep and diamond and then became staff~~

I'm surprised that the "You can do this action again in <x> seconds" text for the bookmark a convo dialog actually removes the s when x is 1

remember, every instance of a correctly pluralized string on SE is another poor soul beat to death by Jeff Atwood with his Giant S

bigyihsuan

22:58

bah, once again the lack of activity in the sandbox is killing me once again: codegolf.stackexchange.com/questions/255070/…

most people think this is a transpose-string challenge; it is very much not

emanresu A

It really is

bigyihsuan

it is intended not to be

the inputs are literal strings that contain newlines

"a\nb" is not "ab"

emanresu A

And? That's just boilerplate, for all the answers

Aiden Chow

pretty sure it just boils down to transposing after u preprocess the input

emanresu A

And maybe adding formatting

Bubbler

23:02

That just adds one un-fun step of removing newlines

emanresu A

Which shouldn't need to be done by standard I/O rules

Bubbler

Protip: if a challenge can be trivialized, trying to circumvent it with strict I/O won't quite work and it'll just annoy people

emanresu A

I'd say the closest dupe is probably this

DLosc

23:25

It is pretty disappointing when something looks like an interesting challenge until a more experienced golfer comes along and says, "Oh, that's an overly specific I/O requirement away from a builtin in [insert golfing language]."

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