The Nineteenth Byte

Cool

CMC: triangularize. You will be given a string of printable characters without whitespace, whose length is a triangular number. You will format it into a triangle as shown in the example. Trailing/leading newlines and whitespaces are allowed as long as the 2D pattern is not broken. The example below will be for the string abcdefghij.

   a
  b c
 d e f
g h i j

@LeakyNun already done

it's a challenge

never mind then

4:09 AM

Also - Triangular, 9 bytes: just include --verbose command-line option :D

39

Q: Triangulating Text

Write a program or function that takes in a string guaranteed to only contain printable ASCII characters except for space, and to be a positive triangular number (1, 3, 6, 10, 15, ...) in length. Print or return the same string, but shaped into a triangle using spaces. Some examples will best sh...

@ASCII-only halo

@Downgoat pls slack

i repond on slack already

Yay scratch (press r)

r

Quetion: if I make a game about goats defeating sheep, should it be like tower defence or should it be like FPS

4:16 AM

Do you say Quetion on purpose?

@Downgoat FPS tower defence (basically FPS + capture the flag + capture the point (tower) so you get op weapons)

CMC: given a newline-delimited strings consisting of whitespace and |\-/, rotate the string clockwise for 45 degrees. Example input:

||||
----
//
\ \\

Output:

   /
  \ /
 - \ /
| - \ /
     \
  |
   |

@LeakyNun Charcoal, 3 bytes: Ｓ⟲⁷

@ASCII-only what the hell

What doesn't replace

:| Why did I not implement this

@LeakyNun Should be Ｓ⟲Ｔ⁷ but I didn't add 45 degree transforms, oh well

4:32 AM

@MDXF no I doughnut

ಠ_ಠ

Fixed now but it's noncompeting + not up on TIO yet :(

New Main Posts

0

Q: Doubling cascade

First, a mathematical interlude, short, and worth your while: If 0logistic function f(x) = ax(1-x) maps the interval [0,1] inside itself. This means that one can play the iteration game; for instance, if a=2, the initial value $ 0.3 becomes 0.42, then 0.4872, etc. As the parameter a increases, ...

code-golf math number

@ASCII-only :| this seem hard to make

@LeakyNun Kinda works but buggy

4:48 AM

I just figured out why I havenlt been getting any emails

I accidentally forgot to unblock the email ports in DO Cloud FIrewall ;-;

RIP the free Minecraft account I was getting

Probably best to not tell the whole Internet you're pirating Minecraft...

@Mendeleev :O how u do dis without offline minecraft

No, like

Someone was quitting minecraft and was going to send me the login info

Oh :P

"quitting Minecraft" what is this blasphemy?

ikr

I think I play too much Minecraft

Today I went to school, pressure washed my house's deck and played Minecraft.

4:51 AM

@Mendeleev wai u need 2 minecrafft acount

@LeakyNun Charcoal, 30 bytes: Ｓ⟲⁷ＵＭＫＡ§⦃|¦/¦/¦-¦-¦\¦\¦|¦ ¦ ⦄ι, I'm not sure if I should implement string translation to make this a lot shorter

@Downgoat They were a Hypixel MVP+

also, I would be able to mess around with hacked clients without fear of getting banned

I bought my copy of Minecraft myself :)

ಠ_ಠ

what is Hypixel MVP+

Q: How are bytes counted in bitmap-based esolangs?

Paid rank on Hypixel server that gives you a bunch of abilities

You should buy Minecraft

or crowdfund it :P

New Meta Posts

0

There are some esolangs like Brainloller. This is the hello world program for that language: How are bytes counted here?

discussion

5:10 AM

hm :/ question: is anyone here good at 3d modeling

I need a 3d downgoat

will pay in cookies

New Sandboxed Posts

0

The things you can buy with a quarter popularity-contest The goal Do the most interesting thing you can do in your language in exactly 25 bytes. No more, no less. The winner is decided by how many votes your answer gets. Meta Is this an interesting challenge? Suggestions for a suiting name...

5:23 AM

@Downgoat no

@LeakyNun It's updated :D Ｓ⟲Ｔ⁷ works now

Q: Languages with rapidly changing version

@ASCII-only nice

New Meta Posts

6:18 AM

0

I have been considering the creation of a julia based golfing language. Proposed name: Jules. In implementation it would effectively resolve every program into a julia AST, which would run inside julia. One feature I was considering was name-fallback. Where if a variable/function name was not de...

discussion rules

CMC: given two distinct positive integer arrays of the same length, compare them using the lexicographic order.

f([1],[2]) = 2
f([1,3],[1,2]) = 1
f([1,4],[4,1]) = 2

where an output of 1 means that the first argument is bigger (you can use any two consistent outputs)

Dennis

> Uncaught TypeError: function Uint32Array() { [native code] } is not a function

Are you sure about that?

@LeakyNun JavaScript (ES6), 9 bytes, may fail for some testcases: a=>b=>a>b

hi all... rust help please!

@Lembik ok

6:30 AM

I compiled codegolf.stackexchange.com/a/125961/9206 in ubuntu (lubuntu) but when I try to run the code I get ./correlations-cms

@ASCII-only that's quite good...

./correlations-cms: error while loading shared libraries: libcryptominisat5.so.5.0: cannot open shared object file: No such file or directory

why would that be?

oh.. cargo run works!!

@LeakyNun Works by using implicit stringifying (arr.join(",")) so it may fail sometimes

how mysterious :)

@ASCII-only oh...

6:33 AM

rust is a mystery to me

@LeakyNun I don't think it does though because if they're different lengths the numbers after don't matter anyway

fails for [100] and [99]

@LeakyNun JavaScript (ES6), 53 bytes, fails for large numbers: a=>b=>(s=String.fromCharCode).apply(0,a)>s.apply(0,b)

@ASCII-only try f=(a,b)=>a[0]==b[0]?f(a.slice(1),b.slice(1)):a[0]<b[0]

@LeakyNun Seems to work, f=(a,b)=>a[0]-b[0]?a[0]<b[0]:f(a.slice(1),b.slice(1)) to make them the same length

New Sandboxed Posts

6:42 AM

0

Sample the Sierpinski traingle Inspired by this video.. Task Your task is to implement the following method to sample a Sierpinski triangle and plot all the intermediate steps. Method Given three points a,b,c and some starting point x_0, for each iteration you sample one of the three points ...

@ASCII-only should I make it main?

@LeakyNun idk

6:55 AM

@LeakyNun Python, 14 bytes: lambda a,b:a>b

a-ta.co is currently down, sorry all, I'm talking with my Webhost provider about it now.

@LeakyNun a=>b=>(s=String.fromCharCode)(...a)>s(...b)

static PyObject *
list_richcompare(PyObject *v, PyObject *w, int op)
{
    PyListObject *vl, *wl;
    Py_ssize_t i;

    if (!PyList_Check(v) || !PyList_Check(w))
        Py_RETURN_NOTIMPLEMENTED;

    vl = (PyListObject *)v;
    wl = (PyListObject *)w;

    if (Py_SIZE(vl) != Py_SIZE(wl) && (op == Py_EQ || op == Py_NE)) {
        /* Shortcut: if the lengths differ, the lists differ */
        PyObject *res;
        if (op == Py_EQ)
            res = Py_False;
        else
            res = Py_True;

> /* Search for the first index where items are different */

@ASCII-only you win

(Objects\listobject.c)

@Downgoat Why don't you like sheep? Are they baaaaaaaaaaaad?

@LeakyNun And since it's in Python: Actually, 1 byte: >

IDK if that's how you do input in Actually though

7:06 AM

 0x3E:lambda x:x.push(int(x.pop()>x.pop())),

I think arguments are in reverse order because stack based

self.inputs.append(literal_eval(line))

Okay, good it's correct

My host promised 100% Uptime, and yet a thirdparty service they're using is going through some maintenance.

No wonder I Am Typing is erroring :P

@ATaco Any idea why my browser logs thousands of

WebSocket connection to 'wss://a-ta.co/' failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED connect @ VM190:94

?

Because my server is down and it keeps trying to reconnect.

7:10 AM

@Adám Because like SE chat, it tries to reconnect if it fails

I probably should put a bit of a delay on it.

Is that "I Am Typing"?

Yeah, I recommend turning it off while I deal with my provider.

@ATaco OK, done. Thanks, and good luck.

This also means that my MathJax images and similar services will be down.

I hope I can receive some compensation from them for this.

7:20 AM

@ATaco What is your provider?

NFOServers.

@Downgoat I might be able to do

Consider me disappointed in their recent service.

Can you send me the original image?

@ATaco Yeah I wouldn't be impressed

My SLA said 100% uptime, this does not count as 100% uptime. I need to invest in a backup server...

7:23 AM

Have you considered DigitalOcean?

What sort of prices am I expecting?

What are these, "Droplets", I just want a relyable VPS host...

@ATaco Droplet = VPS

@ATaco digitalocean.com/pricing

Hmm, these prices are worse than the deal I'm currently getting.

Also: TIO's reflink

@ATaco What are you getting

4GB 2 core 200GB SSD 12TB Transfer for <$20

Although this downtime has been a dissapointment, it's the first time something like this has happened, I don't think I'll be changing hosts at a drop of the hat like this.

7:29 AM

73

Greek Language

Proposed Q&A site for linguists, teachers and students of modern and Ancient Greek Languages

Currently in commitment.

This proposal has reached stasis...

I'm not commiting, as I know nothing of Greek.

@ATaco My reflink (and TIO's) gives you $10 of credit so you can try it out.

I can see that much, yet they still want me to commit my credit card.

They have volumes, firewalls, floating IPs, DNS management, and more

DNS management is concerning when i'm not buying a domain.

7:33 AM

@ATaco Yeah, that's one of the problems people have with it. (You can also add $5 through Paypal if you're into that)

@ATaco They don't sell domains, you set your NS record to them

That's not especially amazing...

Actually, Firewalls too.

I might have used this service If I wasn't already using the one I am.

Seems logical

It's a good service. I use it for a lot of things.

And no-matter what, I can't copy my server to a backup without my server's files.

huh?

Oh, I see

Although I already had to roll it back once, I really should save some backups.

7:36 AM

One of the other issues I have with this service is that you can't import or export images. You can make snapshots internally, you can transfer them between datacenters and accounts, you just can't import/export them.

Why is my console going insane whenever I type?

@Mendeleev Because ATaco's server is down maybe?

oh

It'll be back up when NFO finishes their maintenance...

@ATaco Wait, NFO Game Servers?

Yep, they offer Dedicated VPS hosting.

8:04 AM

chat.stackexchange.com/…

I might make a theoretical language...

@Mayube ?

May(u)be you should make it

@ASCII-only One that can't actually run within a finite amount of memory. Instead of having bultins for generating arrays such as every factorial up to n! or every integer up to n, it would have builtins that generate an infinite array of every factorial or an infinite array of every integer, then have functions to operate on those infinite collections

begins to wonder if CALESYTA was some University student's trick to get free marks

@Mayube A not-exactly-spec-implementing implementation can run with generators :P

8:08 AM

I'd never have to actually make an implementation of the language, just write a detailed spec of it. It'd be a theoretical language because it would be impossible to implement exactly-to-spec

@Mayube 0/10 worst reason for theoretical lang

@ASCII-only my reason for making it isn't because I'd never have to implement it, that's just a handy side-effect :P

@Mayube Not true. It is possible to have infinite arrays, as long as you don't try to print them.

@Mayube No, I mean the worst reason is "Oh I'm going to use infinite lists so it can't be implemented to spec"

@Adám Wouldn't you need infinite memory

@ASCII-only No, not if you store them as descriptions instead of as calculated values.

8:11 AM

@Adám Hmm true, so basically lazy arrays

@ASCII-only exactly. And once you've found which parts you want to pick out, those values get calculated.

@ASCII-only Many languages have a function for Nth prime, but conceivably you could re-package that as the array of all primes, and then calculate the wanted one upon indexing.

Chat megachallenge: Pattern finder, in order of increasing complexity (i.e. most simple first)

Example usecase is new sequences e.g. gist.github.com/somebody1234/712315377b26deb25a2a2417b5de02ed

@Mayube Lembik's correlations sequence

Graphs of differences, 1 2 3 on the left, 4 5 6 on the right if it helps at all

managed to test all the code at last!!

@Lembik :| Maybe you should have used WSL

WSL?

8:25 AM

Windows Subsystem for Linux

I like WSL, but the fact that it only supports 14_04 is annoying, can't wait for the update that brings support for 16_04

@Mayube I have 16.04 on it

@ASCII-only Do you have windows insider build?

@Mayube No but I enabled dev mode

The tab above insider

@ASCII-only I mean, who hasn't? I trust myself to know what software is safe more than I trust windows to know

8:28 AM

@Mayube How much more powerful would you guess the cluster at your workplace to be than an i7 laptop

@Mayube That was the Creators Update

@ASCII-only yep, which I don't have yet

@Mayube O_o it got released a few weeks ago though

"We will notify you when the Windows 10 creators update is available for your device"

@ASCII-only interesting.. is it better than using a VM?

@Lembik yes

8:31 AM

@Lembik Not sure, how are you restricting to 2 minutes

interesting!

a VM has the overhead and issues associated with Virtualization

@ASCII-only timeout 120 :)

WSL runs Ubuntu natively on the NT Kernel

nice

8:32 AM

@Mayube Which is negligible with Hyper-V

@Mayube With syscall patching

@Lembik :| can you give the shell command for that

BTW I'm only on n=48 and it's already taking forever haha

@ASCII-only timeout 120 command-you-want-to-run

@ASCII-only linux.die.net/man/1/timeout

@ASCII-only how did you compile the rust+cryptominisat code? In WSL?

that caused me so much trouble!

@Lembik Yeah (same way you did, got the same error without cargo run haha)

@ASCII-only Cool. I now need to delete so much stuff I installed just trying to get that one piece of code to install!

:| I just copied the dir to run with timeout and cryptominisat broke

why does it have to be so fragile

8:38 AM

@ASCII-only can you run anything with a GUI such as emacs in WSL?

@Lembik Not by default, you need an X server like VcXsrv

ah ok

I set it up to open an X display on boot so I don't have to start it before I can open windows

I rather like my lubuntu in a box now in any case :)

I even got copy and paste to work!

(but it doesn't have the right keyboard layout)

@Lembik Do you intend to add it to OEIS? :P

8:41 AM

no :) but please feel free

Oh wait your laptop is win7, which doesn't have WSL

@Lembik Wait how do you timeout 120 it if it takes >120 seconds to compile

@ASCII-only why are you trying to compile and run in a single command?

@Mayube cargo run needs to recompile for some reason

dammit rust

hmm, do you have to deal with manual memory management in rust like you do in C?

@Mayube No

8:49 AM

Maybe time for me to go learn rust then

Right, I wrote up a basic spec for Theoretica and posted it on esolang wiki, it's officially kind of a language idea now :D

flawr

Better learn Oxide, it is more general :D

@flawr was that a chemistry joke or is Oxide actually another low-level language?

flawr

Would be nice if it was both=)

I'm not aware of any language called oxide

what

what is going on here

why rust.facepunch.com

8:54 AM

@ASCII-only Here ya go It's like Braingolf, but Theoretical :D

(and not actually all that similar to Braingolf)

@Mayube Won't + usually return Infinity

Also R;1

What is even the point of R

@ASCII-only theoretically it will pretty much always return infinity

R;1 wouldn't return infinity

it would pull a random value from the collection

i+ should return -1/12 not infinity

@KritixiLithos how so? It would be every positive integer summed

@Mayube Well Theoretically it will never return infinity, instead it would return a value not representable using every quantum property in all the real and virtual particles in the universe

8:58 AM

1 + 2 + 3 + 4 + ⋯

The infinite series whose terms are the natural numbers 1 + 2 + 3 + 4 + ⋯ is a divergent series. The nth partial sum of the series is the triangular number ∑ k = 1 n k = n ( n + 1 ) 2 , {\displaystyle \sum _{k=1}^{n}k={\frac {n(n+1)}{2}},} which increases without...

@ASCII-only correct

I wonder what would ir;1 return

@KritixiLithos ℵ₀ obviously

@Mayube "Theoretica contains a generator builtin for any conceivable sequence of numbers"?

@Mayube Sadly this isn't theoretical enough, you can't even reach ℵ₁

why can't you?

You need an infinite list of infinite lists to reach ℵ₁

New Sandboxed Posts

9:04 AM

1

Unique is Cheap code-challenge string restricted-source Write a function or program that determines the cost of a given string, where the cost of each character equals the number of how often this character has already occurred in the string and the cost of the string is the sum of its charac...

0

Make String Waves stringcode-golf SANDBOX Any feedback is appreciated Suggestions to Test Cases or to Specs Any other wording / formatting improvements Other relevant tags? Given a string as input, output the string with the following algorithm applied: 1. Split the Str...

okay, I need to watch VSauce's video on infinities again

@KritixiLithos I did that a few days ago haha

@Lembik Can you summarize your correlations question in like one sentence

betseg

7

:D ?

@betseg +1 samsung

@KritixiLithos supertasks?

How To Count Past Infinity

9:17 AM

not that, this:

oh right yeah

5

Question is, how angry would people be if I started posting answers in Theoretica :^)

Mr. Xcoder

Samsung again :))

@Mayube Well currently you still need an implementation AFAIK

9:19 AM

what if I mark every Theoretica answer as non-competing?

@Mayube Well it has to have an implementation at post time

[non-competing because unimplementable] :D

@Mayube As Adám said, it's really easily implemented

@ASCII-only in that case, go write an implementation that will output the correct value for ir;1_ :P

@Mayube Well I would just have to print ℵ₀ wouldn't I

9:23 AM

ir;2_?

ℵ₀ - 1

The real problem is R

at what point do you switch between printing ℵ₀-n or n?

No, there is no last element in "an infinite collection of positive integers", so reversing it will not make sense

in particular, ℕ is well-ordered under <, but not under >.

and also in particular, ℵ₀ is not an element of ℕ

all elements of ℵ₀ (which can be thought of as just being ℕ) are finite.

@ASCII-only subtraction is not well-defined for cardinalities

and yes, I'm fun at parties.

@ASCII-only also what if I did i_

@LeakyNun ω₁ - 1 wouldn't work either right?

9:27 AM

@ASCII-only wouldn't work as what?

@LeakyNun you're right though, no infinite sequence of any kind can be reversed, so I've removed r from the spec

@Mayube oh, you made it...

@LeakyNun The highest natural number :P

@ASCII-only that's far from what ω₁ means

@LeakyNun "made" is a strong word, it's a theoretical language spec, not an actual language

9:28 AM

apart from that, subtraction in ordinal is also not well-defined

ω₁ is the first uncountable ordinal.

@Mayube well that's easy: i = 0; while (True): print i; i += 1

@Mayube Well you made the spec didn't you

@Mayube remove the spaces before the asterisks to make bulleted list

@ASCII-only sure, but I wouldn't consider it my language. I posted the spec on esolangs specifically so that anyone can edit and modify it and make it less bad

@Mayube I don't think anyone's likely to do that though

@Mayube there should be an operator to vectorize sum two infinity lists, etc.

9:32 AM

@ASCII-only I don't understand the question sorry

@ASCII-only are you asking what the question is here in this question codegolf.stackexchange.com/questions/124424/… ?

Oh hey, I've officially made $50 from my minecraft mods, not bad for a half-finished mod that never got updated, and a joke mod that nobody should use

As a remark, I would hope people to stop spreading the "1+2+3+... = -1/12" nonsense.

@Lembik Yeah pretty much

@ASCII-only and compilation is done before the code starts running typically

@ASCII-only it would be easier if you just asked about anything that is unclear

where are you stuck?

@Mayube are you from France or Belgium?

9:36 AM

@LeakyNun No, UK why?

> positive integers, starting at 0

> negative integers, starting at 0

they get the point across without me having to say "positive integers and 0"

@Mayube they getting the point doesn't mean that it's rigorous

just say "non-negative integers"

9:38 AM

@LeakyNun I'm leaving it as-is, you wanna make it clearer edit it yourself :P

I'm just criticizing; I couldn't care less.

@Mayube Criticism: Does this language even have conditionals

@ASCII-only it has c and C, that's it

What about for loops

kind of but not really

if I added a way to modify the "input" stack, then yes, but currently, only infinite loops

9:40 AM

@Mayube do the newlines in your examples have any meaning?

@LeakyNun yes, look at the functionality of < and >

@Mayube oh ok

so initially only the first line is executed?

yep

well kind of

it starts at the start of the first line

it'll keep going past newlines and run further lines

but <> allow you to flow-control and skip or backtrack

c>\n? will run the ? regardless of whether c returns true or not, depending on the implementation it could be written as c ?, where the space is the character to skip if c is false

the input is interpreted as a single integer?

input is implicit to a dedicated input stack It's interpreted as a single integer if it is a single integer

9:44 AM

what can the input be?

implementation-dependent

> I'm usually a fan of the Numberphile crew, who do a great job making mathematics exciting and accessible, but this video disappointed me. There is a meaningful way to associate the number -1/12 to the series 1+2+3+4…, but in my opinion, it is misleading to call it the sum of the series.

> Furthermore, the way it is presented contributes to a misconception I often come across as a math educator that mathematicians are arbitrarily changing the rules for no apparent reason, and students have no hope of knowing what is and isn't allowed in a given situation.

> In a post about this video, physicist Dr. Skyskull says, "a depressingly large portion of the population automatically assumes that mathematics is some nonintuitive, bizarre wizardry that only the super-intelligent can possibly fathom. Showing such a crazy result without qualification only reinforces that view, and in my opinion does a disservice to mathematics.

from Does 1+2+3... Really Equal -1/12? - Scientific American Blog Network

3