The Nineteenth Byte

Riker

12:22 AM

@Οurous hm, cool

@Οurous not be dennis

MD XF

12:44 AM

@aditsu Oh sorry, I don't check TNB very often, thanks! So you don't mind if I repost it then?

MD XF

1:07 AM

Does anyone know what on earth Jython is?

Pavel

1:20 AM

Konquerer is slightly broken

Neil

wishes vim had a way of searching unfolded text only

Pavel

@MDXF Java implementation of python

MD XF

@Pavel Yeah just found SO thread

Pavel

Obviously

Like what else would it be

mudkip201

who knows?

MD XF

1:22 AM

ಠ_ಠ is Cython nothing but a C implementation of Python?

Pavel

@MDXF No no, that's CPython. Cython is a bit different.

mudkip201

Cython

Cython is a superset of the Python programming language, designed to give C-like performance with code which is mostly written in Python. Cython is a compiled language that generates CPython extension modules. These extension modules can then be loaded and used by regular Python code using the import statement. Cython is written in Python and works on Windows, macOS, and Linux, producing source files compatible with CPython 2.6, 2.7, and 3.3 through 3.7. == Design == Cython works by producing a standard Python module. However, the behavior differs from standard Python in that the module c...

Zacharý

Next thing you know, there's going to be Cthon

mudkip201

and then Chon?

MD XF

@Pavel That's my point, if JPython and CPython and Jython and Cython followed the same naming conventions, then Jython would be some special Java-ish Python, and JPython would just be a Java implementation of Python

Or something. I got confused halfway through writing that

mudkip201

1:24 AM

lol

Zacharý

Nah, because soon they'd be CON-ing us (I'll stop now)

MD XF

If they kept going it'd just be C (oh wait........)

Pavel

@MDXF Well, it's python, but you can do import java.util.scanner. What else could it be.

totallyhuman

2

MD XF

@Pavel Forgive me for my simple question that was completely relevant to PPCG and asked when there was no other conversation going on in the room

:P

quartata

1:28 AM

to be fair Cython also has from libc.stdio cimport scanf

Zacharý

Oh, quartata's back! (Or I'm just oblivious)

Pavel

I think you're oblivious

Christopher 2EZ 4RTZ

yep

Zacharý

I've gotten that before, nothing new

@totallyhuman ... Well, since this is PPCG, shouldn't corny be HACKneyed? (It's one of my vocab words, I WILL stop now)

Christopher 2EZ 4RTZ

:P

quartata

1:56 AM

Anyone around for Contact?

Contact

For playing the game Contact, where one person tries to "defend"...

Zacharý

How are the turnouts for Contact?

quartata

With you we'll have 5 players

It's better at the weekly games since we have it scheduled as an event

Make that 6

@Zacharý do you want to play? It's very easy to pick up

Zacharý

2:15 AM

I only asked because it seems to be spammed (not really, just frequently posted) here/

Pavel

3:55 AM

Dennis

.oO(That's a lot of funges.)

Destructible Lemon

i think i had an idea for a koth thingy

well two actually

first one: that maze koth thing i made then abandoned, but without some of the complicating parts like limited vision

second one: bots are a list of commands, and the commands get laid out a bit like a path for the bots or something

they get rotations on the path by commands, but other than that the bots move along every step and execute the next command in the next step

Zacharý

The Lemon's back, or I'm just oblivious!

Destructible Lemon

I've noticed that people think some sort of corewar like thing for a 2d language thing would be good, and i think this might be a good start of an idea for that

yeah i haven't been here for a while

also i have kittens now :)

ok so, should i make up a sketch of my second idea?

silence is yes?

Pavel

4:11 AM

Silence is no one cares

Destructible Lemon

thats the joke

also meany

Dennis

4:46 AM

@Mego GS2 was made by a PPCG user.

Anonymous

@Dennis According to esolangs, nooodl made it. I have no idea who that is on PPCG.

Dennis

Nov 21 '16 at 2:41, by ETHproductions

So nooodl is also https://github.com/maurisvh ?

Anonymous

That's confusing

Pavel

...but who are they on PPCG?

Anonymous

So we were right originally - Lynn made gs2, and it's the first SBCS language made by a PPCG user

Anonymous

4:48 AM

(since gs2 was made in 2013)

Dennis

Well, the first one with 256 single-byte tokens.

Anonymous

Exactly

Anonymous

As opposed to ASCII or Unicode

Dennis

GolfScript can interpret ISO-8859-1 encoded files just fine. It's just that there's nothing useful in the upper 128 bytes.

quartata

@Mego yeah it's kinda confusing. She still uses nooodl for Nethack stuff

New Sandboxed Posts

5:47 AM

0

A: Sandbox for Proposed Challenges

Solve a Rubik's Cube code-golf restricted-time Your challenge is to solve a Rubik's Cube. This challenge is based on this one from 2013, reposted with the original author's permission (SANDBOX: get permission) and help on meta. Input The input should represent an unsolved Rubik's Cube. You may...

Destructible Lemon

5:58 AM

my computer charger not working uh oh

oh frick

Destructible Lemon

6:37 AM

my computer is on 1% goodbye

chromaticiT

7:02 AM

28 sandwiches

mınxomaτ

9:14 AM

Someone here know Dapper? I think I'm about to earn another tumbleweed badge for my question about it: stackoverflow.com/questions/48172218/…

Leaky Nun

11:43 AM

-2

Q: Checking if a number is divisible by any perfect square.

How to check whether a number N is divisible by a perfect square? I know they are called squareful number. First 10 numbers are : 4,8,9,12,16,18,20,24,25,27. I want to print Nth squareful number, I have written a code but don't think so it is efficient. long long Check_squareful(long long n) {...

CMC: ^

Mr. Xcoder

12:19 PM

@LeakyNun Pyth, 13 bytes: tlfsI@T2*M{yP

Can be shortened I think

Leaky Nun

!{IP?

Mr. Xcoder

Why does that work?

Leaky Nun

because it's divisible by a perfect square iff its prime factorization has duplicates

Mr. Xcoder

y tho?

Leaky Nun

if it is divisible by a square, then it would have a prime square factor, so it would have a duplicate prime

if it has a duplicate prime, then it would be divisible by the square of the prime

Mr. Xcoder

12:24 PM

Why doesn't that fail for multiples of squares of composite numbers?

Leaky Nun

because a composite square is divisible by a prime square

(ab)^2 = a^2 b^2

Mr. Xcoder

... Oh lol yeah that wasn't immediately obvious to me

@LeakyNun Do we need to handle 1?

Leaky Nun

no

Mr. Xcoder

Jelly, 5 bytes Æfµ⁻Q

Jelly, 6 bytes ÆDÆ²S’

05AB1E, 4 bytes ÒDÙÊ; 05AB1E, 5 bytes Ñ¦Å²O;

mınxomaτ

1:10 PM

Why am I always the one who finds weird bugs in otherwise stable software (stackoverflow.com/questions/48172218/…)...

caird coinheringaahing

1:25 PM

@Mr.Xcoder New definition of outgolfed :P

Mr. Xcoder

@cairdcoinheringaahing Well I didn't know that trick :P

CMC (Python-interested): Check if a positive integer is a power of 2.

caird coinheringaahing

l2%1¬ should work in Jelly (untested)

Mr. Xcoder

%1¬ in Jelly ಠ_ಠ

I'd much rather use l2=Ḟ

caird coinheringaahing

Doesn't work

user202729

= fl$

caird coinheringaahing

1:29 PM

l2=Ḟ$ works though

Mr. Xcoder

Ah Yeah...

dzaima

@Mr.Xcoder SOGL, 3 bytes: τ1% - 0 for true, anything else for false

user202729

Does the mobile site work for uou?

you*

Mr. Xcoder

It does for me.

That feel when Pyth beats Jelly – 3 bytes

user202729

finds a shorter program

Mr. Xcoder

1:32 PM

Jelly, 4 bytes æḟ2=

caird coinheringaahing

Nice

Jelly CMP: Have you ever used the ` quick?

user202729

yes.

Mr. Xcoder

Yes

Jelly CMP: Have you ever used the ' and / or " quicks?

As a matter of fact, I still don't know how to use '}{

caird coinheringaahing

"/ yes, ' no

user202729

Yes for "

caird coinheringaahing

1:34 PM

@Mr.Xcoder I'll explain in JHT if you want

user202729

(is that vectorize?)

Mr. Xcoder

I know " I think, but I am confused with the rest

@cairdcoinheringaahing Yes please

user202729

(I forgot what is ')

totallyhuman

@Mr.Xcoder there's a golfing tip for that in Python

Mr. Xcoder

I know

mudkip201

1:55 PM

@Mr.Xcoder @Mr.Xcoder ←Ħ¢

Pyt

1 for true, anything else for false

edit: 0 for true, anything else for false

trichoplax

2:09 PM

I know it's a late suggestion, but would Novel scoring mechanism make a good category for Best of PPCG 2017?

totallyhuman

2:59 PM

I think PPCG is about to get Mathjax back :)

Mr. Xcoder

:-) Yay!

Anonymous

3:20 PM

@totallyhuman Why? Strong support on meta doesn't exactly translate to SE doing anything about it.

totallyhuman

SE doesn't have to do anything about it..?

The mods have to flick a switch

Leaky Nun

hi

caird coinheringaahing

hi

Anonymous

@totallyhuman I don't think it's up to the mods. I think a SE employee has to flip the switch

Leaky Nun

@Mr.Xcoder lambda n:n&~-n<1

totallyhuman

3:29 PM

18

A: Revisiting LaTeX

I've now enabled the MathJax setting here. Enjoy!

21

Q: Do we really want LaTeX/MathJax (right now)?

Update: The decision has been made to deactivate MathJax on the site. This does not reflect the current votes, as these changed significantly after the decision was made. We've had MathJax support for 3 days now. While it makes our maths challenges look neat, it has also created two problems: ...

discussion status-completed latex

caird coinheringaahing

Chris is an employee IIRC

Anonymous

CJY (who worked for SE at the time) asked the mods to ask the site whether or not we wanted MathJax. The mods made the poll, and told Chris our decision.

caird coinheringaahing

So if we get a consensus, can't one of the mods just email the CMs in regard to it?

Anonymous

Sure, but SE has a notoriously slow turnaround time for any community request, especially ours :P

Mr. Xcoder

:P MathJax is coming back on... November 1st... 2019 :P

caird coinheringaahing

3:34 PM

2019? That's way too fast for SE :P Expect it after PPCG v2 has a new supreme overlord :P

totallyhuman

...request for @mods: pls halp am confused

Riker

3:54 PM

@Mego there's a fast way to do it tha'ts mod-only

directly contacting a CM, that is

so that actually shoudn't be too bad

totallyhuman

Apr 6 '15 at 13:04, by Chris Jester-Young

@Sp3000 MathJax is not something a mod can toggle. That's something for devs.

aha

Riker

@quartata huh, like what?

New Main Posts

4:16 PM

-2

Q: A simple and visual calculator

Write a program that shows a calculator on the screen, with the least characters possible. It can be as advanced as you want, but it has to include the following: Has to be visual. It needs a GUI Has to have point-and-click 0-9 + - * / are the required inputs Evaluation of what was entered has ...

code-golf code-challenge

Nick Clifford

so I'm implementing arbitrary-precision floating point math in Ohm. what should the default precision for things like sqrt and exp and log be? (Ruby is making me choose)

Doorknob

as many digits as a double would make sense (or maybe a few more for intermediate values)

Nick Clifford

should I make it configurable as a command line flag?

Riker

4:40 PM

sounds excessive to me /shrug

Nick Clifford

got it

Nick Clifford

5:04 PM

huh that's really weird

Riker

yah ppcg generally is

Nick Clifford

if I'm doing BigMath.sin(a, 16), I actually get more like 42 sigfigs

although digits of precision might be differently defined here

Anonymous

5:16 PM

@NickClifford It may give you extra sigfigs, but they might not be accurate past the specified precision

Nick Clifford

true

well now I just need to figure out a good value

cause Doorknob suggested 16-20 digits of precision

Anonymous

Couldn't you just do 16 and then stringify + truncate to 16?

totallyhuman

does anybody know an intuitive unicode character for "nth element"?

Anonymous

@totallyhuman n

totallyhuman

...or CMP: what does your favorite golfing language use for "nth element"

@Mego can't use n

Anonymous

5:29 PM

⌷

Mr. Xcoder

@totallyhuman @

Element @ index N

Anonymous

⌷ is index in APL: row col ⌷ matrix

totallyhuman

:( can't use @ either

Mr. Xcoder

How about € (€lement at index N)

Anonymous

When in doubt, steal glyphs from APL :P

totallyhuman

5:31 PM

@Mego is that supposed to be a box

Mr. Xcoder

^

Anonymous

@totallyhuman Yes

Anonymous

Tall thin rectangle

Anonymous

U+2337

totallyhuman

what's the logic behind that one

Anonymous

5:32 PM

Ask Adam :P

Anonymous

I don't know all of the reasons for the various APL symbols - I just know what some of them are

totallyhuman

for reference, this is for github.com/totallyhuman/unihaskell

Mr. Xcoder

@totallyhuman If you cannot use @€, how about ®? As in, ®etrieve the element at index N

Wait does it have to be ASCII?

totallyhuman

no

in fact I think there is no ascii character I can use

well, there are but none of them are intuitive

!, #, &, and ?

Anonymous

@totallyhuman I'd recommend also importing Control.Plumbers, Data.Lists, Data.Applicative, Control.Monad, Control.Arrow, Data.Bits, Data.Ratio, and System.Random, and also using {-# LANGUAGE ParallelListComp #-} - those are all super useful for golfing, but cost a lot of bytes to import. Some of those are external packages that need installing (like plumbers).

Anonymous

5:38 PM

So basically lambdabot :P

totallyhuman

and export all the functions in then?

Anonymous

Not all of the functions, but the especially useful ones :P

totallyhuman

I technically haven't exported anything from Data.List, I should do that...

Anonymous

Being able to use ap instead of (<*>) would be nice

Anonymous

<*> is better for infix, but infix isn't always an option

totallyhuman

5:41 PM

maybe we should move this conversation over to of moooooooonads and men

Anonymous

Maybe

totallyhuman

...my keyboard has memorized moooooooonads

H.PWiz

@totallyhuman You could use ‼

Anonymous

@H.PWiz Brilliant

H.PWiz

@totallyhuman I think it comes from indexing like a[n]

totallyhuman

5:44 PM

@H.PWiz I do right now

H.PWiz

Oh, well I think that's fine

totallyhuman

7:14 PM

Riker

(can't see plain imgur)

trichoplax

Curiously, the Best of PPCG category "King of the King of the Hills" had +13/-1 in 2016, but +4/-9 in 2017.

I quite like the idea of recognising challenge types other than golf (although understandably most categories will be golf focused). I'm trying to think what would have caused such a swing in opinion since last year

@totallyhuman The python documentation is riddled with Monty Python references, so this isn't all that surprising... :)

Anonymous

8:09 PM

@trichoplax I'm not a fan of that category this year because I don't remember any notable KotHs this year

Anonymous

Last year we had several great KotHs. This year, not so much

trichoplax

I may cry now

(I know it was language specific though...)

More seriously, there have been 15 KotHs in 2017. I must admit I haven't been around that much and couldn't tell you how many were notable

Anonymous

@trichoplax 1) I didn't realize that was from 2017 :P 2) That makes 1

Anonymous

Ok after looking through that list, I now realize there were several good ones, but I forgot about them

trichoplax

@Mego My self esteem is restored :)

Actually I feel pretty good about that one. I learned a lot in making it so I'll be able to avoid making the same mistakes next time, but the competition has been much more varied than I expected, and there's still activity on it 6 months later which is more than I dreamed of

So maybe the problem is that none of the many KotHs in 2017 were sufficiently memorable after the event

Adám

8:42 PM

@totallyhuman The combination of the two index brackets [] into a single character.

Fatalize

@totallyhuman ∋

dzaima

@totallyhuman ＠

Adám

@totallyhuman K: none (juxtaposition is indexing)

totallyhuman

9:02 PM

jeez

Luis Mendo

9:37 PM

@totallyhuman )

New Main Posts

10:20 PM

1

Q: RoboZZle interpreter

Your task is to write a RoboZZle interpreter. If you're not familiar with the game, please watch the video at robozzle.com or read my description below. A robot lives on a rectangular grid of squares coloured red, green, blue, or black. Black squares are inaccessible. The others are accessible a...

code-golf grid interpreter

New Sandboxed Posts

11:12 PM

0

A: Sandbox for Proposed Challenges

Here's an idea for a challenge: Multiplicative digital root Take a number, say 36121840: First, 3 * 6 = 18 18 * 1 = 18 18 * 2 = 36 36 * 1 = 36 36 * 8 = 288 288 * 4 = 1152 1152 * 0 = 0.. Wait, that'll ruin it. Ignore zeroes. Wadda ya'll think? Good idea? Dupe? Let me know. I've done some cur...

Pavel

@Adám What do I do if I want a two-element array containing "abcde" and 3?

Seeing as how K also seems to use juxstaposing for array-forming like in APL.

._. my /boot ran out of space and dnf can't update

Destructible Lemon

Rip koth room got frozen

Pavel

Ok what the hell it's not letting me resize my /boot

Adám

@Pavel ("abcde";3) although I'm not entirely sure why ; has to be special syntax (it requires parens) and could not just be J's "Link" primitive.

New Main Posts

11:27 PM

2

Q: Confusing Alphabet Staircase

Given no input, output this interesting alphabet pattern to STDOUT or an alternative if absolutely necessary: A AB ACBC ADBDCD AEBECEDE AFBFCFDFEF AGBGCGDGEGFG AHBHCHDHEHFHGH AIBICIDIEIFIGIHI AJBJCJDJEJFJGJHJIJ AKBKCKDKEKFKGKHKIKJK ALBLCLDLELFLGLHLILJLKL AMBMCMDMEMFMGMHMIMJMKMLM ANBNCNDNENFNGNH...

code-golf kolmogorov-complexity alphabet

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