The Nineteenth Byte

Fmbalbuena

1:00 PM

@JoKing ok

PyGamer0

@JoKing oh

Fmbalbuena

lost.py: error: unrecognized arguments: 4

Grain Ghost

e.g.

Jo King

make sure the input is before other arguments like -V

PyGamer0

Try it online!

^ doesnt work

Jo King

1:03 PM

what are you trying to do?

PyGamer0

input - 1

Grain Ghost

What happens when the first instruction is -? What about when it is 1?

Jo King

> The only things I currently know can be done without padding are: cat, output a constant and add two numbers.

Fmbalbuena

CMC: All directions and IP will output different from any other in the same program.

Jo King

i guess also adding three numbers etc.

Grain Ghost

1:06 PM

I'm now realizing you can add three numbers as well. In fact for any n you can write a program which takes n numbers and adds them.

ninja'd

11

Q: Make a Lost Compass

Lost is a 2-Dimensional programming language where the instruction pointer starts at a random location, moving in a random direction. A description of the language can be found at the bottom of the post for completeness' sake and a tutorial for the language can be found in the above link. The t...

very similar.

Fmbalbuena

ok so do it

Jo King

@Fmbalbuena yeah, i don't think both direction and IP is possible

Grain Ghost

Oh yeah definitely not.

I missed the IP part.

Your program needs a @ and there is no way of determining whether it starts on the @ or next to it.

CMC Add any number of integers with 1 zero of padding.

Fmbalbuena

1:23 PM

CMC: there is 33.333... chance to do infinite loop. otherwise any

Adám

@GrainGhost What does "padding" mean?

Grain Ghost

There's a 0 on the top of the stack.

Adám

How does that affect the result? Isn't it a simple sum?

Grain Ghost

It makes it possible to do.

If the tos has to be part of the sum you have a chance of accidentally discarding it.

But if you know it's always 0 you can accidentally discard it and be ok.

@Fmbalbuena 8 bytes

thejonymyster

1:37 PM

@Neil huh? :) i do not know what you mean

PyGamer0

1:59 PM

crack this if you can

should be ez

Neil

@thejonymyster you said something, and I'm the second person to repeat you because I hadn't read what you said in time

Alan Bagel

Oops, it's been a month for codegolf.stackexchange.com/questions/155018/…. I guess I'll give one more day.

thejonymyster

2:16 PM

@Neil oh! its like theres an echo in here ! thank you :D

PyGamer0

2:27 PM

CMC: Shave some bytes [BF]: -[>>,[>+>+<<-]>--------------------------------]

Redwolf Programs

Oops I have a test today over a reading assignment I didn't do

I guess I need to read quickly then

Alan Bagel

@PyGamer0 what does that even do?

PyGamer0

@AlanBagel takes input from stdin until its a space

Adám

3:20 PM

Announcement: Dyalog is looking for beta testers for our yearly problem solving competition. While you can use any language to solve the problems, we prefer if you use an APL, or at least an array-oriented language. You will be expected to give feedback on the 10 easy and ≤10 harder problems, while rating their relative difficulties. Note that by beta-testing, you disqualify from the competition. Let me know if you're interested.

5

Aaroneous Miller

3:53 PM

@Adám I spy, with my little eye, a good excuse for me to learn APL.

Adám

@AaroneousMiller Let me know if I can be of help.

PyGamer0

time to learn hardcore array programming

if i can

Redwolf Programs

Yaaay! We're finally doing integration

Fmbalbuena

Hoe Mama

Redwolf Programs

...

That's an unfortunate typo

Fmbalbuena

4:08 PM

-3

Q: Joe Mama or Joe Biden

Your task Randomly pick and print "Joe Mama" or "Joe Biden" in as little bytes as possible. Rules No trailing lines, spaces, or anything else weird like that No election fraud! Both "Joe Mama" and "Joe Biden" must have equal chaces of winning Prize The winner will get a spot in https://github.c...

code-golf

^ VTC

Redwolf Programs

Uh oh

New Posts is down

Adám

@Fmbalbuena Why?

Redwolf Programs

It's been doing this every week, I guess I need to fix my RAID config

Fmbalbuena

@Adám No election fraud! Both "Joe Mama" and "Joe Biden" must have equal chaces of winning

Redwolf Programs

That just means it needs to be uniformly random

Fmbalbuena

4:11 PM

Also, No trailing lines, spaces, or anything else weird like that

Grain Ghost

I'm sure it's a dupe of some other challenge but I don't really care to dig around to find one.

Perhaps this:

32

Q: 1/N probability

Because there are not enough simple code-golf challenges: Create an optionally unnamed program or function that, given (by any means) an integer 1 ≤ N ≤ 10000, outputs your language's True value with a pseudo-random probability of 1/N, False otherwise. Please note that the requirement for namin...

code-golf random probability-theory

Redwolf Programs

Closer to this I think:

15

Q: Name of Frankenstein's Monster

Introduction: Since it's almost Halloween, I was just thinking of some random Halloween-themed challenges. Eventually I was reading through Frankenstein's wikipedia page, and came across the following text: The creature Part of Frankenstein's rejection of his creation is the fact that he does no...

code-golf string random

rues

@Adám Are you guys looking for relative beginners top? If so, I’m interested

Adám

@rues Not so important. Send me an email: adam@ with the same domain as www.dyalog.com and I'll put you on the list.

rues

4:26 PM

Great! I’ll do that when I’m back home

Alan Bagel

4:54 PM

Anyone who can crack codegolf.stackexchange.com/questions/155018/…?

Fmbalbuena

@AlanBagel safe

(change to safe)

Alan Bagel

@Fmbalbuena I know, but I thought I'd give one more day.

hyper-neutrino

5:10 PM

would anyone here be able to translate something from Hebrew? charcoal is trying to figure out what this post means since the machine translation doesn't seem accurate

DLosc

Anyone = @Adám

Fmbalbuena

@hyper-neutrino Lol I'm also searching, I googled, suddenly I see the cat, completely confused by the questions this time

exactly this

hyper-neutrino

@DLosc oh right can't believe i forgot *facepalm*

DLosc

All I can say about it is that the way that font renders the letter heth looks very much like the Greek letter pi and it's really weird to me :P

Aaroneous Miller

same

Alan Bagel

5:18 PM

@hyper-neutrino google translate time

DLosc

> the machine translation doesn't seem accurate

Alan Bagel

@DLosc your right, google translate says Lol I'm also searching, I googled I suddenly see the cat, completely gassed with the questions this time

thejonymyster

thats exactly what it said at the link curious

hyper-neutrino

in Charcoal HQ, 2 mins ago, by Mithical

right, the words for "going overboard" and "the gasses" are spelled the same way

DLosc

From what I can tell, it's definitely talking about a cat. Unless there's an idiom at play or the context has something to do with cats, it might just be somebody spouting nonsense. חחחחח

hyper-neutrino

5:20 PM

looks like just a standard NAA. they were just trying to figure out if it's rude, or just a non-answer lol

DLosc

Oh, I found the question and there are indeed pictures of cats.

Redwolf Programs

That cat does look like it's going overboard tho

DLosc

@AlanBagel Interesting--Google Translate gives me "I'm also searching, I googled and suddenly I see the cat, completely exaggerating with the questions this time." (Which seems closer to how Mithical translated it.) I wonder why it gives different results for the same input.

(Ah--I left the laughing part off. That's why.)

Weird that adding "Lol" at the beginning changes the translation of a verb towards the end.

♫ And at last I see the cat ♫

Adám

Sorry, I was busy. Also, I don't really know colloquial Hebrew.

DLosc

5:43 PM

You mean Dyalog doesn't pay you to be TNB's 24/7 Hebrew translation service? ;P

Adám

Nope. So far, I've only gotten paid for Yiddish services.

Also, I only work 24/6.

Alan Bagel

6:13 PM

0

A: Sandbox for Proposed Challenges

Tower of Code Golf code-golf Your task is to print this exact text: | | | | | | &***********& | Code Golf | | e---------f | | d___________l | | o-------------o | | C______________G | ###Golf your code### #################### Rules Trailing or leading newline is allowed code-golf, s...

Feedback ^

pxeger

@Fmbalbuena "No election fraud" got me laughing harder than it should have for being such a terrible joke

Fmbalbuena

@AlanBagel add kolmogorov-complexity and done.

Alan Bagel

@Fmbalbuena Done.

Fmbalbuena

@AlanBagel oh no

you do first

CMC: print 2 to the power of 100 in Lost

:59826728 "I don't know Lost" - Alan Bagel

Wezl - a cautionary tale

I think if people delete their messages, they don't want them quoted

Fmbalbuena

6:30 PM

CMQ: can you debug this?

@GrainGhost ^

What happened?

Grain Ghost

What do you mean by debug?

Fmbalbuena

@GrainGhost debug means fix bugs

What bugs are there?

infinite loop

Nope.

6:34 PM

@GrainGhost Oh wrong link

Try it online!

Grain Ghost

Third column has no redirects in it.

Fmbalbuena

ok

Try it online!

Grain Ghost

If it starts horizontal in the 2nd row what happens?

Fmbalbuena

a little bit fixed

Try it online!

@GrainGhost why don't work? ^

Grain Ghost

Same reason as before. You only fixed one side.

Fmbalbuena

6:39 PM

@GrainGhost why?

Grain Ghost

You can see the coordinates and direction next to the wrong outputs.

Fmbalbuena

Try it online!

@GrainGhost ^

Grain Ghost

Did you change anything?

The row and direction of all the wrong outputs is the same.

Fmbalbuena

Try it online!

Grain Ghost

Find one of the wrong outputs and try and follow what it does in your head.

Fmbalbuena

6:43 PM

@GrainGhost why i't outputs wrongly?

Grain Ghost

(1, 3, [0, -1]) try this one.

What do you expect it to do if it starts there.

Fmbalbuena

[0, -1] what direction?

Grain Ghost

negative x.

Fmbalbuena

north south east west?

Grain Ghost

[0, -1] is negative x.

To the left.

Fmbalbuena

6:46 PM

ok

oh i found

Try it online!

Grain Ghost

!s have a tendency to introduce infinite loops.

Fmbalbuena

!s

Redwolf Programs

7:08 PM

Ugh hidden test cases are failing for a challenge thing on a site, but of course I don't know why they're failing

emanresu A

o/

thejonymyster

7:25 PM

challenge idea: prime checker program, but if you remove/change/whatever 1 char, it becomes a sum input program. score is however many chars that doesnt work for, lowest score wins

(or something)

hyper-neutrino

i'd be interested to see if it's possible to score 0 for that

i kinda doubt it

thejonymyster

depends on how the rules work

who gets to pick what the char is changed to? user or skeletor

etc

but yea

hyper-neutrino

anyway primecheck sum should work in jelly, removing the primecheck makes it sum, so score 1 which is probably the best possible :P

sounds quite interesting tho

thejonymyster

nice

sandboxworthy?

probably will write it up after work

i forget all the terms and stuff lol

DLosc

@hyper-neutrino So maybe the score should be chars that don't work divided by program length

thejonymyster

7:30 PM

ooh

that makes sense actually

i worry that might be too harsh on langs that cant like, be short lol

actually wait it doesnt matter

yeah

Adám

@lyxal Do you have an alternative email address we can use? The one we have bounces. You can email (it) to me: adam@

Anush

@ThomasWard Thank you for your answer! The question is definitely unpopular :) Can you see how to do it in linear time?

thejonymyster

would it make sense to allow it to be the other way around?

like

start with a sum, change a char and its a prime checker?

or uh in other words

would it make sense for a challenge to be "Write a program that does A, but if you change a character, it does B OR write a program that does B, but if you change a character, it does A"

with the like scoring per character thing

sorry im not good words

Redwolf Programs

8:11 PM

@thejonymyster Problem is, people will just write a \lim_{x\to\infty} answer

It's really easy to take advantage of two-factor scoring methods

Alan Bagel

Any feedback on codegolf.meta.stackexchange.com/questions/2140/…?

Redwolf Programs

@RedwolfPrograms In fact, it makes it trivial to get an arbitrarily low score

x=10000000...000000000;if x<10**10**10**100...000000 prime_check else sum

thejonymyster

aha

ok single factor score then

ty redwolves program

Redwolf Programs

You got me, I'm actually multiple redwolves in a trench coat :(

So we write redwolf programs, but collectively we are redwolves program

5

Aaroneous Miller

@thejonymyster Vyxal as: Try it Online! With the æ, it counts how many of the inputs are prime, but if you remove it, it sums the input. Score: 0

thejonymyster

8:19 PM

@AaroneousMiller wow!

DLosc

@AaroneousMiller Whoa--the code/header/footer boxes have white backgrounds. Is that a bug or a feature?

Alan Bagel

@DLosc I use dark mode

Redwolf Programs

@AaroneousMiller Boooo flag abuse

Using flags in restricted source, source layout, or radiation hardening challenges is twice as bad as code golf

Aaroneous Miller

@DLosc That happens if it is having trouble connecting to gitcdn.xyz, so if you can't get to that site, that would be why. You also might have to wait a minute for it to establish a connection.

Redwolf Programs

Y'all don't have a fallback or anything for if that doesn't work?

thejonymyster

8:27 PM

@RedwolfPrograms ohhh i didnt catch that lol

DLosc

@AaroneousMiller Huh. I can ping it, but web browsers seem to hang indefinitely.

Aaroneous Miller

@DLosc The same thing happened to me at first when I was at home, but I let it sit for about 5-ish minutes, and then it connected, and it's been working ever since, so idk

Alan Bagel

CMC: Print the text s t times r times

DLosc

@AaroneousMiller Okay, looks like it's slowly getting somewhere. I agree with Redwolf, though--a dependency that takes minutes to load is kind of a bad idea.

(The interpreter still has white backgrounds, too.)

Aaroneous Miller

@RedwolfPrograms I don't remember if gitcdn is to do with the auto-integration or Vylight, but I'm pretty sure it's one of those, so that would be a question for pxeger or emanresuA.

DLosc

8:34 PM

Should I ask in the Vyxal room?

Aaroneous Miller

prbly

thejonymyster

@AlanBagel console.log("s t times r times")

no uh, i cant really parse that

Aaroneous Miller

@DLosc Yeah, it seems to be sporadic (we've only had a couple people say something about it), and from my experience, once it works, it doesn't ever seem to have issues again, so I don't really know what's up with it

Alan Bagel

@thejonymyster no loopholes please

DLosc

We don't understand what the challenge means--please explain more

Aaroneous Miller

8:38 PM

I interpreted it as Print (string s) (t*r) times e.g. f("abc", 2, 3) -> "abcabcabcabcabcabc" but that could be completely wrong

Alan Bagel

Example with s="abc" t = 3 r = 3 "abcabcabcabcabcabcabcabcabc"

Aaroneous Miller

@AlanBagel Vyxal, 1 byte: Π

Alan Bagel

oh no builtins again

DLosc

@AlanBagel Pip, 3 bytes: $Xg

Alan Bagel

@DLosc builtin?

DLosc

8:50 PM

Basically. Given a list of inputs (g), fold ($) on string-repetition builtin (X)

Aaroneous Miller

@AlanBagel In vyxal, multiplying a string by a number repeats the string, that builtin simply reduces a list with multiplication. I took input as a list of values, so it essentially just does "abc" * 3 * 3

Alan Bagel

@AaroneousMiller what about ["abc", 3, 3, 3, 3]?

Thomas Ward

@Anush put all the data in a DB, and have the DB format the ordering/grouping before returning the data?

I don't see any way to achieve this in a linear O(n) way because you're doing two sets of groupings simultaneously

your workload is going to have to go SOMEWHERE - either data storage backend like a DB or in the python app

but even for a large number of records this should still be fairly efficient

Aaroneous Miller

@AlanBagel It would do "abc" * 3 * 3 * 3 * 3

Thomas Ward

but you're kind of asking an impossibility. you COULD post on Code Review with the working solution that's not straightforward (but you're going to need to provide totally complete code not just this segment) and ask for improvements and linearization of it, there's better Python coders out there for code reviewing and fixing up, but SO is its own beast so the reviewers aren't always on SO

Aaroneous Miller

9:04 PM

@AlanBagel Vim, 14 bytes: Try it online!

thejonymyster

@thejonymyster sandbox'd

DLosc

9:23 PM

@AaroneousMiller Nice use of the different delete registers, if I'm reading that correctly

Aaroneous Miller

@DLosc Yep, thanks! Here's the verbose: Try it online!

@RedwolfPrograms bots r ded?

DLosc

@AaroneousMiller Ah, I was just about to wonder what the byte before the newline was.

Aaroneous Miller

Yeah, I used dd to put the multiplication in the "1 register, so I had to do some BS to get rid of it :P

lyxal

9:52 PM

@Adám it seems the domain got cut off. But I remember this issue happened last year with my Vivaldi email, which is why I ended up giving you my gmail

Adám

Oh wait, let me look for that.

lyxal

It's lyxalcgcc (at) gmail (dot) com

Adám

OK. Thanks.

lyxal

@RedwolfPrograms a fall back wouldn't work because by the time it detects the syntax highlighting stuff hasn't sent, it's already gotten the code mirror stuff

And code mirror has the fun habit of overwriting css styling

Fmbalbuena

10:21 PM

LostCMC: print this exactly. random thing: "\/|><^v[]>!!<!?:$()1234567890+*-%#@"

(print **LostCMC:** print this exactly. random thing: "\/|><^v[]>!!<!?:$()1234567890+*-%#@")

rues

Does Lost do well with Kolmogorov complexity challenges?

Fmbalbuena

@rues yes but no infinite output.

what is Kolmogorov complexity?

Alan Bagel

@Fmbalbuena fixed output stuff

Fmbalbuena

@AlanBagel what is fixed output stuff?

rues

Kolmogorov complexity

In algorithmic information theory (a subfield of computer science and mathematics), the Kolmogorov complexity of an object, such as a piece of text, is the length of a shortest computer program (in a predetermined programming language) that produces the object as output. It is a measure of the computational resources needed to specify the object, and is also known as algorithmic complexity, Solomonoff–Kolmogorov–Chaitin complexity, program-size complexity, descriptive complexity, or algorithmic entropy. It is named after Andrey Kolmogorov, who first published on the subject in 1963.The notion of...

Fmbalbuena

10:24 PM

ok

rues

@Fmbalbuena On CGCC, we usually tag challenges that are something along the lines of "Print this string" with kolmogorov-complexity

Fmbalbuena

Is Hello, World! kolmogorov complejity?

lyxal

yes

Fizzbuzz is too

Fmbalbuena

i still don't understand, @exedraj

Jo King

try clicking on the kolmogorov-complexity tag

Adám

10:27 PM

@Fmbalbuena Is Spanish your mother-tongue?

Fmbalbuena

i still don't

rues

^^^ Most tags have decent tag descriptions, if you don't understand what they mean, click on them to see that description

Fmbalbuena

ok i understood

Jo King

@Fmbalbuena hmm, you can't actually have the string straight on the playfield, since it contains ><

Jo King

11:25 PM

@Fmbalbuena Not well golfed, but 125 bytes

Fmbalbuena

you should output **LostCMC:** print this exactly. random thing: "\/|><^v[]>!!<!?:$()1234567890+*-%#@", not just "\/|><^v[]>!!<!?:$()1234567890+*-%#@"

Unrelated String

...

Jo King

what?

Fmbalbuena

1 hour ago, by Fmbalbuena

(print **LostCMC:** print this exactly. random thing: "\/|><^v[]>!!<!?:$()1234567890+*-%#@")

Jo King

i'm replying to the one above that

DLosc

11:32 PM

> [ ] Programmers should not need to have a special keyboard to write "Hello, World!" :P

lyxal

laughs in `Hello, World!` and kH

rues

laughs in 0-byte Hello World in cringe esolang

Sandbox Posts

11:50 PM

0

A: Sandbox for Proposed Challenges

Counting universal n-ary logic gates code-golf combinatorics logic-gates sequence Background A classical logic gate is an idealized electronic device implementing a Boolean function, i.e. one that takes a certain number of Boolean inputs and outputs a Boolean. We only consider two-input logic gat...

Fmbalbuena

uh

DLosc

@lyxal Haha, wasn't thinking about the fact that of course Vyxal has a Hello World builtin. Fine, you win this time. ^_^

Fmbalbuena

@DLosc i have backtick in my keyboard

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