The Nineteenth Byte

Mr. Xcoder

17:00

@wizzwizz4 I just golfed ~~one of your~~ your only Pyth answer from '15 by 13 14 bytes :)

wizzwizz4

@Mr.Xcoder I performed a direct translation from a Python program. that I also wrote. I wouldn't be surprised if there's a Pyth builtin to do the whole thing.

Mr. Xcoder

By 16 now

wizzwizz4

Ternaries. My only weakness.

Mr. Xcoder

I have also used spacing tricks

Like reeplacing =+Q... once and then outputting Q, by just printing +Q...

wizzwizz4

@Mr.Xcoder I think that deserves its own answer. (If you credit. :-p)

Mr. Xcoder

17:09

@wizzwizz4 Ok, I'll post it :)

totallyhuman

:o i have two messages pertaining to me on the starboard... but they're not mine

wizzwizz4

@totallyhuman Isn't the "painstakingly fun XD" one yours?

totallyhuman

ah well that's offscreen for me

Mr. Xcoder

@totallyhuman WheatWizard's totallyhuman answer :))) xDD

@wizzwizz4 Posted.

wizzwizz4

@Mr.Xcoder Link to mine? :-p (Optional.)

Mr. Xcoder

17:15

@wizzwizz4 Oh yeah, sure.

Thx for the vote :)

@wizzwizz4 I now realise I can golf it by ~10 bytes

@wizzwizz4 I didn't say it was you. I didn't even ping you. I thanked whomever did so.

wizzwizz4

@Mr.Xcoder You've basically decimated mine, then thrown away the bytes you didn't kill off, then arranged the ones you did kill in a big line and counted them. :-)

2

Mr. Xcoder

@wizzwizz4 Here we go: ++5%^%Q4 3 7

@wizzwizz4 Now I decimated my own solution lol :)

HyperNeutrino

Goddammit the next sequence has a golfed explanation again

> Series-parallel numbers

Mr. Xcoder

@HyperNeutrino The OEIS challenge is still alive?!

HyperNeutrino

Yup. I revived it last night.

Mr. Xcoder

17:25

@HyperNeutrino Nice.

HyperNeutrino

:P

wizzwizz4

@Mr.Xcoder Which one?

Mr. Xcoder

52

Q: One OEIS after another

This is an answer chaining question that uses sequences from OEIS, and the length of the previous submission. This answer chaining question will work in the following way: I will post the first answer. All other solutions must stem from that. The next user (let's call them userA) will find the...

totallyhuman

can i get some feedback on this?

Mr. Xcoder

@HyperNeutrino Lol I totally forgot about the rectangle on JHT :))

HyperNeutrino

17:28

rip. same xD

oh apparently the next sequence is nonn,easy

totallyhuman

lel they're lying

Mr. Xcoder

I don't have time rn for that anyway

@HyperNeutrino That means it's hell

@totallyhuman Sure, taking a look

HyperNeutrino

Yup. The ones that aren't easy are complete death.

> non-easy

Oh that's what it means!

Mr. Xcoder

@totallyhuman Wait, do you want us to create a new stack snippet?

totallyhuman

if you want to :P

yes, you are allowed to take the current snippet and golf it

not very interesting though

Mr. Xcoder

17:30

@totallyhuman Did you mention that it is guaranteed to be a code-golf challenge?

totallyhuman

no because it's not

Mr. Xcoder

Oh... Then I should read again

totallyhuman

lol

it was restricted to code-golf, but then i changed it

anyways i'll be posting in an hour or so

Mr. Xcoder

Hmm, it looks good

totallyhuman

it's probably not gonna go well, since the community doesn't like internet challenges much ¯\_(ツ)_/¯

Mr. Xcoder

17:33

It isn't very interesting, but it's fine (IMHO)

HyperNeutrino

0

Q: Series-Parallel Numbers: Explanation for OEIS A000137

The explanation for OEIS A000137 states simply: Series-parallel numbers It offers no explanation as to what that means and a web search doesn't give anything useful (series-parallel numbers gives a bunch of things about circuits and "series-parallel numbers" gives mostly OEIS sequences). W...

oeis

Halp pls

totallyhuman

last time i tried one, it got 7 points and 3 answers

so yeah, doesn't go well

Mr. Xcoder

@HyperNeutrino Where's Leaky for the rescue?

HyperNeutrino

Given that they've computed this many, I doubt it's too hard, at least compared to the last one.

Mr. Xcoder

@totallyhuman My only internet challenge has +33/-3

I ~~just~~ only need +2 for silver code-golf :)))

HyperNeutrino

17:34

@Mr.Xcoder :P Leaky gave me help for the graph one that I saved and WW/ENW and OP of the sequence gave me help for the last one. Dennis tried but the explanation was golfed so it was hard to tell what it meant :P

Mr. Xcoder

Dennis didn't know what a sequence meant?!?!?!?!?!

totallyhuman

some oeis explanations suck

HyperNeutrino

Either that or he didn't have time for it :P

Mr. Xcoder

@HyperNeutrino I gave your Q an upvote, really wanna see the answer

HyperNeutrino

yay thx

Mr. Xcoder

17:37

@HyperNeutrino I am pretty sure it is related to Physics

HyperNeutrino

Probably electronics.

Mr. Xcoder

Because there are series and parallel electrical circuits or groups of resorts

HyperNeutrino

I should try emailing N.J.A. Sloane about this one :P He wrote it. But I don't want to bother the OP of the sequence yet :P

Mr. Xcoder

Why do I keep typing reson lately :{

HyperNeutrino

idk, there must be a reson why

Mr. Xcoder

17:41

@HyperNeutrino Someone saw your question :))

HyperNeutrino

yay

I saw the edit

totallyhuman

hrm

i thought there was a standard loophole on link shorteners

i can't find one though

Mr. Xcoder

LOOL, look at this, if you thought this one is underspecified

totallyhuman

i think there was definitely a meta about it though

Mr. Xcoder

@totallyhuman URL shorteners are disallowed by default, you don't need to provide a URL

totallyhuman

17:42

CMC: find relevant meta for link shorteners

HyperNeutrino

l_l

that looks hard

7

Q: URL shortener policy

I haven't seen a discussion on this yet, but I also haven't really seen it used in answers, so I figured it was worth asking a question for link-reference in the future. So, what's the policy on using URL shortening services to reduce characters for golfs? This question made me think of it. Answ...

discussion code-golf rules

Mr. Xcoder

7

Q: URL shortener policy

I haven't seen a discussion on this yet, but I also haven't really seen it used in answers, so I figured it was worth asking a question for link-reference in the future. So, what's the policy on using URL shortening services to reduce characters for golfs? This question made me think of it. Answ...

discussion code-golf rules

totallyhuman

>_>

i was searching for "link shortener" XD

Mr. Xcoder

@HyperNeutrino What a crappy edit >_>

totallyhuman

30

A: Loopholes that are forbidden by default

URL shorteners / shortened URLs Every once in a while, we get a challenge that requires fetching some data from the internet. While some of them manage to ban URL shorteners in time, other don't. I propose to forbid them by default because of the following reasons. URL shorteners that were cre...

HyperNeutrino

17:44

@Mr.Xcoder which one

Mr. Xcoder

@HyperNeutrino The very last one

HyperNeutrino

like the one that reworded the question

Mr. Xcoder

Ya, why would you put it in the question

?

HyperNeutrino

I don't see what's wrong with it; I approved it btw

Mr. Xcoder

I didn't answer anything on M.SE in a while, I should do so

@HyperNeutrino As you wish >_<

HyperNeutrino

17:46

lol

opls say math.SE not M.SE; M.SE looks like Mother Meta

Mr. Xcoder

@HyperNeutrino I should answer in both places :))

totallyhuman

(:)

HyperNeutrino

:P

{:}

It's a clam peeking out of its shell

Mr. Xcoder

I am extremely STUPID!

totallyhuman

:o

why?

show us a formal proof and then we may accept it :P

Mr. Xcoder

17:48

@totallyhuman Long story, typing

I have solved a Physics problem with an equation that took me 2 whole pages to solve and the answer didn't match the one from the book. I threw the pages in the trashcan, then I have redrawn everything and re-done the calculations. Yet again, I got the exact same result. I was so mad that I got my exercise book and thrown it in the wall >_<. Then, I started again, and got the same thing. It turned out that I was right in the first place, because I looked at the result of the wrong exercise

HyperNeutrino

...

totallyhuman

lol

HyperNeutrino

How did you get the book out of the wall? And does your wall now have a hole in it?

Mr. Xcoder

@HyperNeutrino No, the wall is a whole, it has no holes. The book is fine too

Erik the Outgolfer

can I get some feedback here?

Mr. Xcoder

17:55

@EriktheOutgolfer Add some test cases

Erik the Outgolfer

> Incoming!

Mr. Xcoder

Do it now :) Test cases are the only feedback I can give :P

totallyhuman

oh wait nvm i'm not posting today

Erik the Outgolfer

rn I'm making them

totallyhuman

today's a sunday

there's no post on sundays

New Sandboxed Posts

17:56

0

A: Sandbox for Proposed Challenges

Arbitrary base conversion Given an integer n of any sign, output a list of digits of its representation in a given base b. You may assume that you will never get invalid inputs. That means: b will never be 0 n will always be able to be represented in base b Neither n nor b will ever be non-int...

Mr. Xcoder

@totallyhuman Why is sunday so special :)

totallyhuman

because PPCG is very inactive

also somebody pls get my joke ;-; :P

Mr. Xcoder

@totallyhuman Still, WW has nearly hit repcap

And Neil too

Bye, I guess. This place is far too sleepy

HyperNeutrino

18:13

@LeakyNun Can you halp here

SEJPM

Had to change the title of my challenge from "Polyglot OEIS!" to "Polyglot the OEIS!" because 15 char minimal length :(

New Main Posts

1

Q: Polyglot the OEIS!

Introduction We all know and love the on-line encyclopedia of integer sequences (OEIS). So what if we made an off-line version? Well, that would be kinda too easy, wouldn't it and how would you select a sequence with our standard interface!? No. We need an easier solution to this. A polyglot! I...

code-challenge sequence polyglot rosetta-stone

totallyhuman

is <shape> a number the new alphabet challenge

HyperNeutrino

yes

totallyhuman

then i must buy a ticket to the train

brb

HyperNeutrino

18:20

wut

totallyhuman

the challenge hype train

duh :P

hmm

how would you circle a number

Cows quack

@WheatWizard thanks for your suggestion, iTerm2 is very much worth it

Wheat Wizard

:) glad you like it

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Circle a number This challenge is, like, WIP, yo.

New Main Posts

2

Q: Number of sums of factors

Given a positive integer n > 1 determine how many numbers can be made by adding integers greater than 1 whose product is n. For example if n = 24 we can express n as a product in the following ways 24 = 24 -> 24 = 24 24 = 12 * 2 -> 12 + 2 = 14 24 = 6 * 2 * ...

code-golf math

Leaky Nun

18:36

@HyperNeutrino lolno

Cows quack

@NewMainPosts that's an interesting sequence, each time we encounter a new largest f(n), n appears to be a multiple of 6

starting from f(n) being 2, we have f(6)=2, f(12)=3, f(18)=4, f(24)=5

(or at least according to the jelly answer)

Lembik

hi all

totallyhuman

hi

Lembik

thinking of this challenge. golf an O(nlogn) algorithm for the longesst increasing subsequence

has this been done?

as in this en.wikipedia.org/wiki/…

Mr. Xcoder

18:54

Foes anyone know of a short way to get the product of a list in Pyth?

totallyhuman

reduce by multiplication?

oh pyth doesn't have reduce

Lembik

I will guess it hasn't been posed before :)

11

Q: Shortest Longest Increasing Subsequence Code

The Challenge is to write the shortest implementation to find the Longest increasing subsequence . Example : Let S be the sequence 1 5 7 1 8 4 3 5 [length of S = 8 ] We have 1 sub-sequence of length 0 [will consider it increasing] 6 sub-sequences of length 1 {1,5,7,8,4,3}[all of them are consi...

code-golf

Cows quack

~~f(36)=5 and not 7, so that rule is broken~~

HyperNeutrino

19:21

Hey I made a new thing: github.com/alexander-liao/hack-the-north-2017/tree/master

It's made for Hack The North this year but you can actually use it for any team project or project running over multiple computers :P

just felt like sharing that :P I gtg now o/ tell me if it borks

Cows quack

but f(30)=5 so that rule is still borked

Newly Featured Questions

80

Q: The versatile integer printer

Write a piece of code that is executable in at least three different languages. The code must output the integer 1 in language number one, 2 in language number two, 3 in language number three etc. Rules: The output must be only the integer, but trailing newlines are OK. The code can't take in...

code-challenge number polyglot

Bruce Forte

Hey!

Can I get some help with the tags for this?

New Sandboxed Posts

19:46

0

A: Sandbox for Proposed Challenges

Complicating Simple Maths code-golf We do know what 1 + 1 is, or 2 - 1. How about we turn those and other really simple operations into complex numbers? Goal: As stated in the intro, taking an operation that can be done within the range of the following operators ( +, -, /, *, ^ and () ), prin...

totallyhuman

what's up with this question:

-1

Q: Thirty-one Oddities

Prolog In the very fun and well-known card Thirty-one, each player holds three cards from a French deck (the Wikipedia article suggests a deck containing 52 cards, I, however, play it with 32). The game is played in successive rounds, with each player having a number of lives which decreases whi...

code-golf math combinatorics

Bruce Forte

20:03

@totallyhuman Probably the OP should include the expression to compute the probability.. Or at least more test cases

Not sure if I misinterpret the question (I'm not very good with probabilities) but also I get a different result for c=32 and p=3.. (0.1347)

Also the output specs are not very well defined IMHO

New Sandboxed Posts

21:06

0

A: Sandbox for Proposed Challenges

Segmentation fault cops-and-robbers code-golf This isn't quite done and is just an idea anyway; I'm still working on it and I might not even go with this idea at all. Cops' thread Your challenge is to write a program that, when compiled and run or interpreted, throws a segmentation fault. Howe...

Husnain Raza

21:35

Is cython considered to be a different language than Python?

totallyhuman

languages are defined by implementation so yeah

you could also do jython

lol

SEJPM

22:08

Do we have any (prior) ruling on whether Node.js and Browser JS are different langs (for polyglots)?

Reason:

Do different versions/implementations of the same language count as different langauges (like Python2 and Python3, or like browser JS and Node.js)? — ThePirateBay 33 mins ago

ATaco

22:44

I think it's important to differentiate minor language differences, like Lua 4 -> Lua 5, compared to major ones, RProgN -> RProgN2

Christopher

I need a better steam username. Right now it is:

O_O‮ O_O

ATaco

ಠ_ಠಠ_ಠ

Christopher

With the rtl override btw

totallyhuman

ಠ_ಠ

betseg

my steam username is CAIVS·IVLIVS·CÆSAR

Christopher

22:55

Right now I am pumped tho. Dota 2 International 7

:DDDD

betseg

@Christopher y tho

Christopher

You can always hide the RTL override anywher‮ O_O e

totallyhuman

ಠ_ಠ

betseg

ye but y u du

Christopher

@betseg ^^^

Are carets zero based? Mysteries of life.

ATaco

22:57

In the userscript..?

They should be 1 indexed

Christopher

No in life

totallyhuman

last ask for feedback on this:

4

A: Sandbox for Proposed Challenges

Take me to your leader code-golf internet stack-exchange-api Have you ever found a good challenge to answer, answered it and then found out somebody posted a solution with a better score in the same language? Challenge Write a program/function that takes a PPCG question ID and outputs a lea...

Christopher

WTH how do you have 5k!

totallyhuman

:P

Christopher

This is war. I will now repcap for the next 21 days. Get. Out. Of. Here.

totallyhuman

22:59

ಠ_ಠ

Christopher

@totallyhuman join this room: chat.stackexchange.com/rooms/63002/…

totallyhuman

but it was declined though

Christopher

I feel better now

totallyhuman

alrighty then, i shall post

Husnain Raza

so im writing a python script for the next oeis challenge

ATaco

23:07

Does a call stack overflow count as running out of memory for infinite output challenges?

It's the difference between whenx is*{writex ifx==1when0secondpassx=x}x=read() and whenx is*{writex x=x}x=read() for a MaybeLater truth machine

Actually, I can probably do the latter shorter...

Oh, the second one is invalid anyway.

totallyhuman

nice thought train

ATaco

I do try.

whenx is1x=writex x=writeread() is valid.

(Once again, assuming a callstack overflow is valid)

ASCII-only

yesterday, by ASCII-only

also: new short ppcg thing just it isn't really short: http://not-s.tk?g

ATaco

when0secondpass is the shortest method to avoid that callstack overflow...

@ASCII-only ppcg.a-ta.co also works.

ASCII-only

@ATaco :/ refused to connect

ATaco

23:12

Try again.

ASCII-only

@ATaco still broken

ATaco

Strange, it's working on my end...

ASCII-only

@ATaco working on isup.me/ppcg.a-ta.co too

ATaco

It should be sending a 301.

totallyhuman

a view a minute lol ^^

ASCII-only

23:17

@ATaco not-s.tk?g137846

Pavel

@ATaco Why do you need the 0 time delay

New Main Posts

0

Q: Take me to your leaderboard

Have you ever found a good challenge to answer, answered it and then found out somebody posted a solution with a better score in the same language? Challenge Write a program/function that takes a PPCG question ID and outputs a leaderboard. A leaderboard consists of the rank, the language, the ...

code-golf internet stack-exchange-api

ASCII-only

@ATaco no

@ATaco secondpass?

ATaco

Sorry, I'm alive again.

ASCII-only

@Anyone pls still don't know what's the best way to do dictionary compression

ATaco

23:25

Yeah, that link worked.

@Pavel Async's the call, so Node resets the call stack.

Pavel

Maybe you should make that happen by default, as an optimization.

ASCII-only

@ATaco 0 time delay?

ATaco

Problem with doing that is it will first continue processing anything higher in the time stack.

ASCII-only

@Pavel yeah especially when it's an async language in nature

@ATaco use an async function and an event queue

pls

ATaco

That's probably a better idea.

ASCII-only

23:29

so basically function run () { if (events.length) events.shift().run(); } setInterval(run, 0);

ATaco

Yeah, I know how it works.

I just need to implement it, which I'll do shortly.

ASCII-only

yay

New Meta Posts

0

Q: Default / Recommended Ruling on counting Implementation-Variants of Languages as different?

In my most recent challenge, which was scored by number of languages in a polyglot the following question came up: Do different [..] implementations of the same language count as different langauges ([...] like browser JS and Node.js)? To which I couldn't find any prior ruling either on...

discussion challenges

ATaco

@NewMetaPosts There is a lot to consider about this.

Husnain Raza

can someone help me out with something? im trying to write a program to count the number of polyominoes without holes

i just need to test for if a polyomino has holes

ATaco

23:34

A Polyomino..? Like an N sided Domino..?

Husnain Raza

domino with n tiles

ATaco

Don't think I can help with this.

ASCII-only

@ATaco :| what is with your order of operations

Husnain Raza

basically i have an array of squares and i need to know if it has a hole

ASCII-only

@HusnainRaza hole = 0? what language

Tobi

23:36

anyone know WebGL

ASCII-only

@Tobi kinda

ATaco

@ASCII-only Order of operations? Never heard of 'em. Only Order I need is LTR.

Husnain Raza

python

and a hole is a blank region of space that has edges all around it

Tobi

can you not dynamically set gl_PointSize?

Husnain Raza

actually i think i got it

Tobi

23:38

as an attribute

ASCII-only

@Tobi opengl.org/discussion_boards/showthread.php/…

Tobi

...
attribute float pointSize;
void main()
{
  fragColor = colour;
  gl_PointSize = 100.0;
  // gl_PointSize = pointSize;
  float ps = pointSize;
  ...
}

Husnain Raza

never mind i dont

ASCII-only

@Tobi use the function glPointSize

Tobi

oh thanks!

howd you find answer so fast

ASCII-only

23:39

@Tobi google fu :P (well idk if it actually works)

Tobi

should I use function for gl_Position too?

i tried that :(

ATaco

(Actually I'm pretty sure the Order of Operations is R2L in MaybeLater)

ASCII-only

@Tobi no function for that

Tobi

Im going to try this: glEnable( GL_PROGRAM_POINT_SIZE )

i got error using function

ASCII-only

@Tobi but "it may be written at any time" makes me think you can just set it

@ATaco yes it is >_> why

Tobi

23:42

I'm setting it but nothings happening

but when I use 100.0 it works

ASCII-only

@Tobi can you jsfiddle pls

Tobi

which is weird

ATaco

@ASCII-only It was easier to write.

ASCII-only

@HusnainRaza loop through all but first and last row/column and check a[i-1][j], a[i+1][j], a[i][j-1], a[i][j+1]

@ATaco ................................................

ATaco

:P

If you're looking at MaybeLater like it should be a true functional language, you are going to be disappointed.

ASCII-only

23:44

@ATaco it's not functional it's eventual :P i.e. things maybe will eventually execute

ATaco

It's a language that assumes when you give it writex=3 you want to output 3.

ASCII-only

@ATaco 0/10 srsly

ATaco

of course, if you don't care about freedom of variable names, it's much golfier than usual.

Husnain Raza

what if hole is bigger than one tile

ASCII-only

@HusnainRaza oh :| then i'd do a fill and see if it reaches the outside

ATaco

23:47

That sort of programming goes against everything I've taught myself over the years but it's so much golfier.

ASCII-only

@ATaco uh no? this is nowhere near golfy

Husnain Raza

how2do

ATaco

Doing a flood fill on every tile to see if it reaches the edge or w/e probably isn't the most optimized way to do it.

Tobi

@ASCII-only jsfiddle.net/#&togetherjs=58HpxRpowQ

ASCII-only

@ATaco yeah but really you can't really say anything look you much you cheated for maybelater

2EZ 4RTZ

23:50

Does anyone understand my username?

Tobi

this is cool

ATaco

@ASCII-only I did nothing but cheat for MaybeLater.

HyperNeutrino

@LeakyNun :( :P

Tobi

Whos brilliant beaver

you, @ASCII-only??

HyperNeutrino

@2EZ4RTZ Too easy for <<RTZ>>?

Tobi

23:52

lmfao whos brilliant beaver

ASCII-only

@Tobi me

ATaco

I'm surprised you're not curious as to why R2L turned out easier than L2R.

Tobi

im confused, ascii only just joiend too

ATaco

That or you're in shock that I did it at all.

2EZ 4RTZ

@HyperNeutrino I was talking about usernames and mentioned an event that involves the last part.

I will tell you in a sec

HyperNeutrino

23:53

k

Tobi

@ASCII-only whats going on

2EZ 4RTZ

@HyperNeutrino The dude is Arteezy. He is a pro player that I like.

ASCII-only

@Tobi no idea

HyperNeutrino

Ah I see :P

Tobi

Lol

did you read it?

New Main Posts

23:58

4

Q: Print a booklet

Reading a book is easy*, but printing a book can be a bit tricky. When printing a booklet the printer needs to have the pages arranged in a certain manner in order to be read from left to right. The way this is done is using a pattern like below n, 1, 2, n-1, n-2, 3, 4, n-3, n-4, 5, 6, n-5, n-...

code-golf sequence

Tobi

@ASCII-only you there?

ASCII-only

@Tobi yeah

2EZ 4RTZ

I need a simple challenge that I can answer in one byte with jelly and get about 20 upvotes a day for the next 25 days. Ideas?

Tobi

you done?

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