The Nineteenth Byte

DJMcMayhem

19:00

@HyperNeutrino It's mostly because of the beautiful way that commands nest.

HyperNeutrino

Ah I see :P

DJMcMayhem

Not to toot my own horn or anything, but I'm super happy with how the language turned out. I didn't realize how well it works until wheatwizard started using it and finding cool things in its design

The nesting nature is incredible once it makes sense

HyperNeutrino

It only has 8 commands but they are really useful commands and people (like WheatWizard as your example) can find really smart and golfy things to do with them

it's nice :) :P

great so i = 5; i == 5 is false

Step Hen

@HyperNeutrino what about i != 5

DJMcMayhem

Wth? What language is that?

Step Hen

19:06

@DJMcMayhem the one he's making

HyperNeutrino

@StepHen TypeError: 'int' object is not callable

:P

Because != doesn't exist...????????

oh ! is getting tokenized before !=. Need a quick fix :P

Business Cat

The next OEIS sequence is pretty easy now

Mr. Xcoder

@BusinessCat How many langs have been used?

Business Cat

99

Oh damn... I should've done that one in 99

Mr. Xcoder

Goddarn it

Business Cat

19:12

Still a while to go before freedom :P

ppperry

I deliberately padded my code to make it easy

because there were two hard sequences in a row

HyperNeutrino

Once all langs are reopened I'm going to write like 10 Python answers :3

Business Cat

@ppperry I did too

Mr. Xcoder

@HyperNeutrino Unless I do it first :)

ppperry

oh

Business Cat

19:13

I went to 30 instead of 29 because it's easier

HyperNeutrino

ok someone else needs to start answering hard sequences. I've done it 3 times by now and I'm on vacation for two weeks starting next week and I don't want the challenge to be won :3

@Mr.Xcoder yeah true :P

Mr. Xcoder

I think I'll solve the next one

Step Hen

I don't understand the maths @HyperNeutrino :P

HyperNeutrino

Here's the nice thing about making dumb languages that nobody wants to use (Positron, Proton): nobody will outgolf or ninja you because nobody wants to touch the language :P

Mr. Xcoder

Nor do I ^

Step Hen

19:14

get Leaky to do it

HyperNeutrino

@StepHen kek I didn't understand any of it before I asked 5 questions on math.SE either

Mr. Xcoder

@StepHen He kinda left us by ourselves

HyperNeutrino

@StepHen Leaky isn't always available to help :P

Business Cat

I like how A153 has no description in the title of what it means it's just a function

HyperNeutrino

Aug 6 at 18:13, by HyperNeutrino

@LeakyNun Can you halp here

Aug 6 at 18:36, by Leaky Nun

@HyperNeutrino lolno

Mr. Xcoder

19:15

@muddyfish Sorry for bothering you: What is <sequence>[0] in Pyke?

muddyfish

@Mr.Xcoder ?

ah

h

Mr. Xcoder

@muddyfish The first element in a list

Are there lists at all?

muddyfish

@Mr.Xcoder yes. h returns the first element

Mr. Xcoder

@muddyfish Thanks a lot :)

Business Cat

Huh, Pyke hasn't been used yet

muddyfish

19:17

@Mr.Xcoder There's a slight documentation here: pyke.catbus.co.uk:5000

Business Cat

Neither has Husk

Mr. Xcoder

Is there a way to cast an int to a string?

muddyfish

What for?

Mr. Xcoder

@muddyfish An OEIS answer-chaining challenge

muddyfish

@Mr.Xcoder `

Business Cat

19:17

Digit list should work too

HyperNeutrino

lol I think == and != aren't converting identifiers to their values

Mr. Xcoder

@muddyfish Thanks again

I solved it

muddyfish

That link has at least a bit on the characters and how they're used

Business Cat

Is the entire program just `h plus whatever padding is necessary :P

Mr. Xcoder

@muddyfish Thanks for the interpreter link

@BusinessCat I know

muddyfish

19:19

I need to get it back up on port 80 so my links work again :P

ppperry

and here comes another mathy sequence

Step Hen

@Mr.Xcoder why

HyperNeutrino

\o/ breaks exist now

OPLS THE NEXT SEQUENCE IS AN ERROR

Mr. Xcoder

@StepHen cuz I can

Step Hen

> The initial 2 should really be a 1. See A011260 for official version.

Mr. Xcoder

19:21

Should I change it?

@StepHen @HyperNeutrino ?

Step Hen

@Mr.Xcoder nah it's fine

don't change it after you post it

HyperNeutrino

what's GF

Step Hen

generating function?

HyperNeutrino

lolwat A(400) has SO MANY TRAILING ZEROS

@StepHen huh maybe

Step Hen

@HyperNeutrino oh you mean in the title? I dunno

all you need is a EulerPhi function and it's easy though

HyperNeutrino

19:22

fortunately the Mathematica program in the description is really easy to read

Business Cat

The next one sounds worse than it is

Step Hen

guess what, EulerPhi is something I plan to add to cQuents :P

Mr. Xcoder

Maybe I should edit to this?

oeis.org/A000022

Step Hen

@Mr.Xcoder no

HyperNeutrino

:o

Mr. Xcoder

19:23

> Number of centered hydrocarbons with n atoms.

Step Hen

don't edit it, after you post it

HyperNeutrino

plsno

Step Hen

just don't

Mr. Xcoder

Ok.

I'll let it be errorneous

ppperry

that looks worse

HyperNeutrino

19:23

If[n==1, 2, EulerPhi[2^n-1]/n]

this is really easy actually, we just need EulerPhi

what is EulerPhi

Step Hen

@Mr.Xcoder the first char errorneous is better than half the sequence erroroneous

Mr. Xcoder

I have the 100th answer!

HyperNeutrino

\o/

Business Cat

@HyperNeutrino Totient

Mr. Xcoder

@StepHen I know

@BusinessCat Goddamit ninja'd

ppperry

19:24

I'll make sure to post a hard sequence somewhere in the next 50 answers

Step Hen

> The totient φ(n) of a positive integer n greater than 1 is defined to be the number of positive integers less than n that are coprime to n. φ(1) is defined to be 1. The following table shows the function values for the first several natural numbers:

HyperNeutrino

what is totient

ppperry

as a test before you can reach language freedom

HyperNeutrino

ಠ_ಠ ninja'd

Business Cat

Jul 27 at 1:19, by Dennis

@BusinessCat Sure, multiply the number by (p-1)/p for each of its prime factors.

HyperNeutrino

19:24

@ppperry if you do I won't be here to help you xD

ppperry

maybe ...

HyperNeutrino

(I don't have any Pythons left so I'm saving Proton for this)

ppperry

oh

Mr. Xcoder

@HyperNeutrino Why do you have this:

HyperNeutrino

(Anyone who understands Python and Java will get it really easily)

Mr. Xcoder

19:25

> 97. [Python 3 (PyPy)],

Business Cat

@HyperNeutrino Number of positive integers <= n that are coprime with n (i.e. gcd(n, i) = 1)

HyperNeutrino

Because Python 1, 2, 2 PyPy, and 3 were all used

Mr. Xcoder

@HyperNeutrino I mean, did you forget the link?

HyperNeutrino

@BusinessCat yay

that should be easy

Step Hen

@HyperNeutrino no the [], you must have taken out the link

Mr. Xcoder

19:25

@HyperNeutrino No, the brackets around it

HyperNeutrino

oh whoops

fixed

Business Cat

@HyperNeutrino As I said, the description makes it sound worse than it is

HyperNeutrino

yup

They could just say totient(2^n-1)/n

Mathematica has a really awkward If syntax

it's If[condition, if, else], which is how if is stored on the AST in Proton but not how you write it lol

ppperry

@HyperNeutrino I think you still have python bytecode

HyperNeutrino

rip

(sorry misunderstood)

yay continue exists now in Proton

it was so easy with break already in place

Mr. Xcoder

19:39

@HyperNeutrino Did you create ~~Python~~ Proton to have one more language to compete in the OEIS challenge?

Poke

What are your thoughts on the great hashtag vs pound sign vs octothorpe debate

HyperNeutrino

@Mr.Xcoder not exactly, it was originally meant to be Positron remade but then it became much better

so I split it off from Positron

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Syllables in a Number Make a program/function which takes in a non-negative integer as input and returns how many syllables it has when spoken in English. The number zero can be zero (two syllables) or nought (one syllable). Make your code short. Test Cases > 0 1 or 2 -- either is acceptable >...

Mr. Xcoder

@Poke octothorpe

@Poke I'd much rather call it number sign or hash instead though

HyperNeutrino

CMP: include for Python and import for Proton, or import for Python and include for Proton?

Business Cat

19:43

Octothorpe? ಠ_ಠ

I just call it a hash

Not a hashtag

Step Hen

Just call it the number sign :P

Mr. Xcoder

@BusinessCat Me too, I call it hash, but I had to choose one among the given ones

> I'd much rather call it number sign or hash instead though

Business Cat

It's called a hash though ಠ_ಠ

HyperNeutrino

call it a quadruple plus sign

Poke

interesting

Step Hen

19:43

It's the all-way mirror

HyperNeutrino

><>?

Business Cat

The word hashtag came from the fact that you're adding tags to your post that are preceded by hashes

Mr. Xcoder

@HyperNeutrino include for Proton and import for Python. It is more obvious

Poke

fair enough, cat

HyperNeutrino

k

Poke

19:45

i guess if i'm reading c++ i always think "pound include foo dot ayche"

Mr. Xcoder

@HyperNeutrino What do you think about an alternative to those (like using or package or module)?

Business Cat

Actually dictionary.com says it's officially an octothorpe

Poke

Dictionary.com can eat my shorts

Mr. Xcoder

I kind of dislike include because C++ uses it >_>

Business Cat

But that name was made up by the technicians that added it on a button on phones, and it apparently the thorpe part was because one guys really liked an olympian named Jim Thorpe

So that name makes literally 0 sense

HyperNeutrino

19:49

package makes it look like I'm defining the current package (Java)

module has the same issue

using makes it seem like I'm using a subset of a specific package

Mr. Xcoder

ok, up to you :)

HyperNeutrino

import makes it seem like I'm taking external resources and adding it to the directory, and same with include :))

Mr. Xcoder

I am so glad Cthulhu won't have such things

@HyperNeutrino Try export then :PPPPP

HyperNeutrino

lol

@Mr.Xcoder ಠ_ಠ

Business Cat

using is ok

Mr. Xcoder

19:52

isaacg Were you inspired by Pyke when you designed Pyth (most of the commands are identical)? Sorry for bothering you if you have more important stuff to do.

Business Cat

I agree package and module should be for definitions not includes

HyperNeutrino

Also I have an interesting construct in Proton where you can do <varname> exists to determine if a variable is defined

Mr. Xcoder

@HyperNeutrino Very nice. I won't bother to look into your dir, so might be worth adding === for identity checking and is for Type comparison.

New Sandboxed Posts

1

A: Sandbox for Proposed Challenges

Divisibility Streak code-golf We can define the Divisibility Streak k of a number n by finding the smallest integer k such that n+k is not divisible by k+1. Challenge In your language of choice, write a program or function that outputs or returns the Divisibility Streak of your input. Exam...

HyperNeutrino

hm maybe

I also have a and b exist and a or b exist

(the grammar on the last one is wrong, unfortunately)

Business Cat

19:58

What does that mean

Oh nvm

I should read

HyperNeutrino

a exists and b exists

@BusinessCat lol

exists is an operator and exist is a keyword

also there's && and || as well

Mr. Xcoder

CMP: Should I add an Undelta built-in to Cthulhu? It might be useful (since it is number manipulation)

Step Hen

the grammar is right I believe

HyperNeutrino

@Mr.Xcoder yes

@StepHen no, a or b [singular]

Mr. Xcoder

Ok :)

HyperNeutrino

19:59

like "Steve or Joe dies"

Step Hen

it sounds right in my head both ways

HyperNeutrino

"Steve and Joe die"

Step Hen

:P

Mr. Xcoder

@HyperNeutrino exist is plural

HyperNeutrino

"[singular] and [singluar] <plural>"

Mr. Xcoder

19:59

ah

or b exist

Step Hen

@Mr.Xcoder that's his poimt

HyperNeutrino

@Mr.Xcoder that's why it's wrong

Mr. Xcoder

Yeah, b exist

it is <singular><plural> :O

Step Hen

I know the rules, it just sounds right in my head for s or s p to work :P

HyperNeutrino

"[variable-plurality:a] or [variable-plurality:b] [plurality-of-b]"

I could fix that. Should I fix it for the sake of grammar and making it slightly less golfy? (note: it's designed to be readable, not golfable)

Mr. Xcoder

20:01

Wow, someone got 666 rep in 16 days :))

And is also a Perl golfer :))

Business Cat

With or the verb should be singular because it's one or the other

HyperNeutrino

no coincidence xD

Business Cat

"Either a or b exists"

Mr. Xcoder

I know, perl is a devil ^^

Step Hen

@HyperNeutrino it would break your parser

HyperNeutrino

20:02

To fix it, I would need to make exists a keyword equivalent to exist, and put brackets around things

Mr. Xcoder

Lol

HyperNeutrino

@StepHen er no. I just remove exists and make it become exist

Mr. Xcoder

> File sharing is free. Everything should be open source. Everything I ever write will be free and open source.

cc ThePirateBay

Step Hen

a or b exists -> does that mean a or (b exists) or (a or b) exists

HyperNeutrino

it means (a exists) or (b exists)

Business Cat

20:03

Curse the abmiguities of English

Mr. Xcoder

Like (a or b) exist

Step Hen

so how do I say if a is truthy or b exists? :P

HyperNeutrino

@StepHen a or (b exists)

Dennis

@Mr.Xcoder This Pyke? It's a lot younger than Pyth.

Mr. Xcoder

@Dennis Pyke is younger than Pyth? Really?

HyperNeutrino

20:04

Curse English and its plurality! In Chinese/Mandarin, there is no such thing as plurality! xD

Step Hen

@HyperNeutrino yeah but those dumb words are weird

the quantity words or whatever they are

I had 4 months of chinese, it killed my brain

HyperNeutrino

oh yeah there are like 50 articles

Mr. Xcoder

@Dennis As a RO, can you please remove my message to isaac? :/

Move to trash or sth

HyperNeutrino

@StepHen I've known it almost all my life :)

Business Cat

@HyperNeutrino You just have memorize one symbol for every word, and also the symbols can mean different words than normal when combined with other symbols. Great trade-off

HyperNeutrino

20:05

@Mr.Xcoder I think that's mod abuse. It has no need to be deleted (and deleting ping messages can be annoying)

@BusinessCat Yup :) Except I can't read/write Chinese :(

Business Cat

I learned some Japanese a few years ago but I forget most of it

Dennis

@Mr.Xcoder At least the GitHub repo is. Pyke was created in February 2016, Pyth in July 2014. (Sources: api.github.com/repos/muddyfish/PYKE, api.github.com/repos/isaacg1/pyth)

Mr. Xcoder

@BusinessCat I am in the exact same situation.

Dennis

@Mr.Xcoder I could have edited out the ping, but since you pinged him again, that seems pointless now.

Mr. Xcoder

@Dennis I misunderstood their order, because I saw that the Pyke chatroom has been frozen > 1 year ago.

Step Hen

20:07

I did one-on-one Spanish lessons with a tutor who really wanted me to learn Spanish, but I was only there for the high school credits, so...

Mr. Xcoder

@Dennis I deleted the other message. You can now remove the ping. (please)

@Dennis Thank you sooo much!

Business Cat

@StepHen I should try to learn Spanish sometime. It wouldn't be too hard because I have several friends who are native speakers but I don't have the motivation ¯\_(ツ)_/¯

Dennis

np

HyperNeutrino

I made exists an alias of exist now

Poke

does that actually remove the notification of the ping

i doubt it

Mr. Xcoder

20:10

@Poke It does.

HyperNeutrino

leven("Poke", "Pyke") == 1

coincidence? :P

Mr. Xcoder

leven("Pyke","Pyth") == 2" :P

StepHen why do you post challenges and sit in silence then?

Step Hen

?

Mr. Xcoder

Nevermind

New Main Posts

1

Q: Predict a Collision: Will the robber get away?

Think of a road as a number line, starting at 0 and continuing indefinitely: ................................................................. There are two cars on the road: C and R. C is the cop who is trying to catch R, the robber. C starts at 0, and R starts somewhere on the road: C.........

Step Hen

20:15

I think there will be some really golfy answers to ^^ that completely ignore the explained method of calculation :P

Business Cat

I think I'll do that one in Prolog

Mr. Xcoder

I'll do it in Python

New pop-cons :(

Wheat Wizard

@ConorO'Brien I don't know if you've seen but I added pyramid scheme to the polyglot

isaacg

@Mr.Xcoder Pyke's first commit: github.com/muddyfish/PYKE/commit/…, from 2016. Pyth's first commit: github.com/isaacg1/pyth/commit/…, from 2014.

Mr. Xcoder

I wish you wouldn't have seen that. Sorry

isaacg

20:22

Don't worry - I would just ignore it if I wasn't curious.

Mr. Xcoder

Ok. So Pyke was inspired by Pyth

isaacg

@muddyfish Was Pyke inspired by Pyth?

Conor O'Brien

@WheatWizard nice!

Mr. Xcoder

@isaacg I think so. Repr is `, [0] is h, reverse is _, prime is _P, prime factors is P.

isaacg

Seems convincing

Conor O'Brien

20:26

_ is a natural choice for reversal IMO, as it's often used for negation. overloading negation for lists is often reversing

Step Hen

@HyperNeutrino I really should start testing stuff before I upvote it :P

HyperNeutrino

lol

New Main Posts

-2

Q: Tri...Tri...Tri to Count the Triangles

Let us consider a regular n-sided polygon where all of the sides are equal in length with n being a natural number larger than or equal to three. Now let's draw all possible diagonals (including the edges) which connect all n vertices to one another. Here is an example for n=11. This results i...

0

Q: 91 Bottles of ASCII-beer on the Wall

Given a single integer x where 0 <= x <= 91 output a stack of bottles of beer with that many bottles (and shelves) missing. For simplicity sake I'll only show the first 6 bottles and what it would be for each of the first inputs. Note, we're using 91 instead of 99 because 99 would result in an ...

code-golf ascii-art

Magic Octopus Urn

@StepHen d/w me too.

Mr. Xcoder

@StepHen You should. I just added a test suite such that it's easier for you to test.

Step Hen

20:35

@Mr.Xcoder no I meant Hyper's answer - I upvoted it, then tested it

Mr. Xcoder

@StepHen I know

Business Cat

@StepHen I think 100, 100, 50 is in fact falsy. The cop/robber/robber speed for each step would be (0, 100, 0), (100, 150, 50), (200, 250, 100), and then the cop will never catch up. I might be grossly misunderstanding the challenge though

Step Hen

@BusinessCat it is, I already fixed it

I brainfarted when I made it

Business Cat

...you changed it from false to true

Mr. Xcoder

@BusinessCat The cop catches them in the first sec.

Step Hen

20:36

@BusinessCat truthy means the robber got away

Business Cat

But from the examples, the acceleration is added to the speed before the step

Oh....

> I might be grossly misunderstanding the challenge though

Step Hen

only the output part :P

Business Cat

No wonder the test cases looked backward.

flawr

@Mego Did you get my proposal about blackbox functions?

(this one)

Step Hen

@Mr.Xcoder good luck doing += in a lambda :/

Mr. Xcoder

20:39

@StepHen Recursion. You do not need +=. You only need f(p+a)... Another brainfart?

Step Hen

yeah

I'll leave now

Mr. Xcoder

Wait... My answer is wrong, isn't it?

The robber accelerates constantly, right (in my answer)?

Oh no, it's ok... Brainfart

Step Hen

the robber always accelerates constantly :P

Mr. Xcoder

Duh

Step Hen

when I first took physics acceleration confused the crap out of me, especially negative acceleration

Magic Octopus Urn

20:43

Cumulative sum.

Mr. Xcoder

@StepHen That's kinda easy.

HyperNeutrino

yay python imports exist now in Proton

Step Hen

@Mr.Xcoder I said at first, I just didn't get the concept of acceleration affecting velocity for a few hours :P

Mr. Xcoder

I didn't yet study acceleration in School, but I needed it at the olympiad >_>

Magic Octopus Urn

@StepHen If you want to hear something truly embarrassing... I was trying to decide how that challenge was a cops and robbers challenge...

HyperNeutrino

20:45

ಠ_ಠ lol :P

well if I understand it correctly, you can just imagine acceleration as the velocity for where velocity is the displacement?

Step Hen

@MagicOctopusUrn heh, I had that tag on it in Sandbox as a <whatever you call something to see if anyone is paying attention>>

@HyperNeutrino pretty much

Mr. Xcoder

I would call it the rate of displacement increase

HyperNeutrino

uh the next sequence looks scary

> Finding a g.f. for this sequence is an unsolved problem.

Oh great. ಠ_ಠ

Step Hen

@HyperNeutrino except it's not the next one

Leaky Nun

@HyperNeutrino which?

Step Hen

20:55

Leaky already used D

HyperNeutrino

ohlol

Leaky Nun

@StepHen :-P

HyperNeutrino

@LeakyNun oeis.org/A000293

phew

Leaky Nun

interesting

bkul

Fun fact: {...:...} is a valid Python expression

Step Hen

20:57

@bkul good ol Ellipsis

Leaky Nun

how

Step Hen

@LeakyNun ... is an alias for the Ellipsis object in Python

Leaky Nun

@StepHen I've never heard of that object until now

Step Hen

@LeakyNun yeah apparently is was added to vanilla python just for numpy

HyperNeutrino

{...:{...:...}}

bkul

20:59

It has no use in vanilla Python but is very handy in numpy

HyperNeutrino

gtg now o/

Mr. Xcoder

> error: expression was too complex to be solved in reasonable time; consider breaking up the expression into distinct sub-expressions

Swift kills me

Why Swift WHYYYY?

> binary operator '*' cannot be applied to operands of type 'Int' and 'Double'

Magic Octopus Urn

Does it have casting?

Anonymous

21:28

@flawr I did, but I haven't really looked at it yet

Mr. Xcoder

21:46

@MagicOctopusUrn Of course, but I have to break it into vars, say Double.... It gets far too long

New Sandboxed Posts

21:58

-1

A: Sandbox for Proposed Challenges

Tri...Tri...Tri to Count the Triangles Let us consider a regular n-sided polygon where all of the sides are equal in length with n being a natural number larger than or equal to three. Now let's draw all possible diagonals (including the edges) which connect all n vertices to one another. Here i...

New Sandboxed Posts

23:16

0

A: Sandbox for Proposed Challenges

Archer Battle Your challenge is to simulate a battle between two armies of archers. Each army has a population and an accuracy. Each round, every archer will let fly an arrow at the enemy army. The archers are trained each to shoot at different targets. Any archer hit by an enemy arrow is elimi...

2EZ 4RTZ

23:34

I am the only one in here. :D

Now I am sad and lonely

trichoplax

> Sometimes, there isn't anybody talking in chat. That's perfectly fine. Don't send messages just because the room is quiet.

Silence != absence

trichoplax

23:58

That doesn't mean you can't say anything, just not commenting on how quiet the room is.

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