The Nineteenth Byte

Sherlock9

16:00

And it doesn't have to be animated. They just have to print the single diagrams for each input

Eᴀsᴛᴇʀʟʏ Iʀᴋ

oh, didn't notice that

yeah, I'd just let them be really big

Sherlock9

Also, should I call it a "factorization diagram", or a "factor circle", or a "factor polygon"?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

#3 sounds coolest

Martin Ender

I like #1

Eᴀsᴛᴇʀʟʏ Iʀᴋ

epic philly motorcycle vs police helicopter

►

Sherlock9

16:04

And I'm still a fan of numbers 1 and 2

Kritixi Lithos

How about factoragon

Sherlock9

I am halfway between no and yes

It sounds cool and dorky at the same time

Anonymous

I like Factor Circle

Sherlock9

Matryoshkagon?

Because they're nested

And that is five different opinions XD

Anonymous

That sounds like you're cursing in German

Eᴀsᴛᴇʀʟʏ Iʀᴋ

16:06

@Sherlock9 go for it

Sherlock9

Go for which? Did you link to the wrong message?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yeah

@Sherlock9 meant this one

Kritixi Lithos

Or you can combine all of them into a super mega cool name

Martin Ender

@Sherlock9 "It's factors all the way down"

Eᴀsᴛᴇʀʟʏ Iʀᴋ

^ best title

@KritixiLithos Matryoshkafactorapolycirclegon

Sherlock9

16:08

O_O That's brilliant! Doesn't help with naming the dang diagram, but still :D

Kritixi Lithos

factoryoshization polycirclogon

Eᴀsᴛᴇʀʟʏ Iʀᴋ

> yoshization

sounds like transforming into yoshi or something

Sherlock9

@MartinEnder Especially since I drew one example with turtle

Anonymous

Call it Factorios

Anonymous

Factor Soup

New Meta Posts

16:10

0

Q: How can I use a list of English words in a challenge?

I would like to make a challenge that involves English words. Because we want all challenges to be self-contained, I'd have to stuff the huge file into a code block, and let people copy-paste it to use it. However, because there are so many words in the human language, the system won't let me put...

DJMcMayhem

Factions

Sherlock9

Or to golf Kritixi's suggestion, Factogons!

@Mego How many hours of Factorio have you played this week?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

oh god that game

the addicting one

murder the animals

Anonymous

@Sherlock9 Uhh

Anonymous

About 100 I think

Anonymous

16:15

But that's because I have a tendency to leave it running while I'm asleep or away

Sherlock9

I was about to type "There's 168 hours in a week. Is it more or less than 84?" but there we go

Oh ok. That's more sane

quartata

"sane"

Clearly we have varying definitions of that word. This is intervention material for sure.

Sherlock9

I didn't say it was sane, just more sane than actively playing for 100 hours in a week

quartata

Ah. Fair.

Sherlock9

Leaving it on in the background is a different, slightly less smelly kettle of fish

New Main Posts

16:19

0

Q: complex boolean logic?

I'm not sure if this is where i would put this, but i couldn't find a boolean logic stack. I've made a python module with all seven logic gates, (AND, OR, XOR, etc.) Note that it does not look like this: a AND b It looks like this: And(a, b) In a program I'm trying to make, at one point I...

logic-gates

Sherlock9

Okay, I just edited the post. Removed any mention of the name until we find a name for the diagrams (thought I put in a small mention of "factor polygons" in the context, "output an image of its nested factor polygons."

I also put in Martin's title and a limit on the size of n: 1 <= n <= 10000

Erik the Outgolfer

2

A: Could you make me a hexagon please?

Jelly, 24 bytes R+’µạṀx@€⁶żx@K¥€”*$F€ŒḄY Try it online! Jelly is ashamed of the fact that it does not have a centralization atom, so it's beaten by 05AB1E and V. By 11 and 7 bytes respectively! If you find any way to golf this, please comment. Any help is appreciated. Explanation: R+’µạṀx@...

When Jelly sucks.

Kritixi Lithos

Then Dennis solves it in <10 bytes

Erik the Outgolfer

Nope. Of course that can't be true. What about the formatting?

Sherlock9

It would be easier to find golfing spots if you broke your answer down a little more :)

Erik the Outgolfer

16:28

I was searching for them for a while. The explanation is not completely broken up because it would have been 24 lines long.

flawr

205

Q: Why is a robot getting a badge that states it is not a robot?

With the first batch of people to receive the Not a Robot badge, I was surprised to see Community receiving one as well. Does this mean I will be able to meet the fabled Community in person?

support badges community-user

TuxCopter

Plot twist: Community user is secretly Jeff Atwood. — Qix Oct 4 at 17:28

:O

Sherlock9

Thanks for all the feedback on my post, guys. I'd mention you all for individual thanks, but I think you'd prefer not to be pinged :D

PhiNotPi

16:45

I should develop a chat.SE pebble app.

Kritixi Lithos

Pebble?

FlipTack

Can someone explain truthy/falsy to this person? I'm not a great explainer :(

PhiNotPi

@KritixiLithos A smartwatch brand

Kritixi Lithos

Does it run on android?

PhiNotPi

Custom OS, I think

Kritixi Lithos

16:49

@FlipTack He can also remove more unnecessary whitespace for golfing (just saying)

FlipTack

@KritixiLithos last time I helped heather golf, I wrote their whole answer for them. Anyway, their answer is wrong, even with their rule of "0 = true and 1 = false"

PhiNotPi

I got their gen1 watch as a present. It's pretty limited (black and white screen, 4 buttons, etc.) but has a pretty good development environment. As in, I can write code using their online editor, and press a button to install it on my watch.

Unfortunately the company went bankrupt earlier this month.

Kritixi Lithos

lol, but Android watches have a much broader audience

ETHproductions

17:10

Fun fact: in my default browser, I can now get to the PPCG hat leaderboard by typing co, down arrow, enter. I guess I'm slightly obsessed with hats :P

FlipTack

Doesn't everyone here get to code-golf with c <enter> though? :P

@ETHproductions I put up some cubix answers (1, 2), any golfing tips?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@FlipTack <enter> for me :p

Erik the Outgolfer

@FlipTack For me that's cjam.aditsu.net. I need codeg to go there apparently.

ETHproductions

@FlipTack Of course

FlipTack

oops, wrong second link. it's codegolf.stackexchange.com/a/104648/60919

Eᴀsᴛᴇʀʟʏ Iʀᴋ

17:16

nice!

ETHproductions

@FlipTack I swear I answered the first one in Cubix at some point, because I added D specifically for that purpose...

But I guess not :P

FlipTack

you did, my bad :P

Martin Ender

@FlipTack your reverse input won't work with null bytes, but it's not clear whether that's a requirement

oh you said that

nvm

ETHproductions

Oh yeah, here it is:

1

A: Shortest code to produce non-deterministic output

Cubix, 3 bytes (non-competing) @OD Outputs a random positive number of zeroes. Non-competing because I added D just a few minutes ago. Before it was added, there was absolutely no way to randomize anything in Cubix. Test it online! How it works Before the code is run, it's padded with no-op...

It doesn't show up in the userscript leaderboard because of the "non-competing"

FlipTack

yeah, that's why I didn't see it

flawr

17:20

I'd love to write a challenge where you have to write submissions that accept mathematical functions as input. Is anyone here aware of such a challenge / how this input can be handled? Of course for many "functional" languages this isn't a problem but what about the others?

ETHproductions

Perhaps there should be a button that allows you to see non-competing answers in the leaderboard too

Martin Ender

@ETHproductions I assume negative integers are truthy?

ETHproductions

Correct. This may not be the most convenient option though

Martin Ender

@flawr that kinda depends on what sort of primitives you want to allow for the mathematical functions

FlipTack

you mean like f(x) = 2x^3? Or more advances things with sigma, product etc @flawr ?

Martin Ender

17:21

only basic arithmetic? sums and products? special functions? derivatives? integrals?

FlipTack

speaking of this, I was wondering earlier - how do you write sigma notation linearly?

Martin Ender

@ETHproductions I think I could do less for the input reversal one, but I think the choice generally makes sense

ETHproductions

@MartinEnder I think the way to fix that would be to push a -1 before taking input, then quit on -1 instead of 0

FlipTack

but that creates a whole set of new problems ^ :P

flawr

@FlipTack doesn't really matter for the challenge, the only thing you need to now that you can put in a number and another number comes out.

Martin Ender

17:23

@ETHproductions the ? also needs changing

@flawr well it does matter if you want to allow languages to participate that don't have first-class functions

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Introduction Tic-Tac-Toe is a solved game. It is possible on current hardware to generate a complete game tree using the minimax algorithm. However, doing so is CPU and memory intensive. There are various ways of generating an incomplete game tree that will still solve the game using, for exampl...

Martin Ender

(i.e. where you'd need to give answers a description of the function, not an actual function object that computes the mathematical function)

ETHproductions

@MartinEnder Yes, the way I usually get around this is something like )!^(. Perhaps I should add a command to do something iff the TOS is negative

DJMcMayhem

I just got a hat that isn't listed on the secret hat page

FlipTack

I tried using i)!^( in my answer, but it ended up longer.

flawr

17:25

@MartinEnder For example "write a program/function that accepts a (mathematical) function, and outputs it's integral from 0 to 1 using some kind of numerical quadrature" (It is a bad example but it should get across what I'm trying to do)

ETHproductions

@DJMcMayhem Which one? I recognize all the ones on your profile

DJMcMayhem

Lounging around

ETHproductions

post a question using the Android or iOS app that earns you the Nice Question badge

It's not a secret hat

Eᴀsᴛᴇʀʟʏ Iʀᴋ

^

DJMcMayhem

Oh, doi

Eᴀsᴛᴇʀʟʏ Iʀᴋ

17:27

*duh?

DJMcMayhem

Nope. Doi

Martin Ender

@flawr yes. my point is, if I want to answer this in Hexagony, then I need to parse and interpret some form of function description and to be able to do that, I need to know what a function can be made up of

DJMcMayhem

The funny thing is I was intentionally going for that hat, lol

Martin Ender

if you want to limit it to languages that can accept a blackbox function, that's fine though

Pavel

The website is fully functional. Don't need the app.

flawr

17:28

@MartinEnder Ah right "blackbox function" is probably the best description of what I'd want, thanks=)

ETHproductions

I swear I've changed my hat every day thus far, and yet I don't have Trendsetter

Martin Ender

every UTC day? :P

FlipTack

I got trendsetter by accident, what's the criterion?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

change your hat 3 days in a row

Pavel

Actually, the mobile website doesn't show hats. I never noticed until just now.

ETHproductions

17:29

@FlipTack Change your hat on three consecutive UTC days, I believe

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@FlipTack as far as we know ^^^

@Pavel yeah, meta.se basically said it's not supported

Martin Ender

@flawr in that case, yes, you'd limit it to languages that have some form of callable function object, and you'd probably want to provide some guarantees on the function, like that it's total and that it's range is within the representable range of the language's number type or something. alternatively, to allow more languages, you could allow people to designate a place in the code to put the function implementation, but that could open up new problems.

flawr

@MartinEnder Yes I think it is difficult to make it clear for those other languages. I just thought perhaps someone already made a challenge of that kind

Martin Ender

@ETHproductions since you have run and pause buttons on the Cubix interpreter, how about a step button?

@flawr codegolf.stackexchange.com/q/45361/8478

FlipTack

are you trying the "reverse stdin" challenge? (Martin)

Erik the Outgolfer

17:33

@FlipTack You can @ping people if you want their attention :)

flawr

@MartinEnder thanks!

Martin Ender

@FlipTack sort of.

not very seriously

I find Cubix even harder to golf than Hexagony :D

Erik the Outgolfer

I find them both... agonizing.

FlipTack

earlier i picked up my rubix cube and tried to imagine the program flow on there... :P

Erik the Outgolfer

What if you need a non-side-3 cube???

El'endia Starman

17:37

Imagine program flow where there are commands for rotating slices, just like a real Rubik's cube.

FlipTack

oh god...

that would be amazing, but terrible

ETHproductions

@MartinEnder Done :-)

@El'endiaStarman That was actually one of the original ideas for implementing in Cubix, but I haven't got around to it yet... :P

PhiNotPi

I'm trying to track down a PPCG challenge where the goal was to create a smartwatch app that calculates the amount of time dilation you have experienced. I'm relatively sure that such a challenge existed but I can't find any trace of it.

Martin Ender

@ETHproductions nice, although I don't know why it's greyed out until you hit "Run"

aditsu

メリークリスマス

Eᴀsᴛᴇʀʟʏ Iʀᴋ

17:41

happy holidays to you too, even though you missed it by 1 day for the US

ETHproductions

The step button is only activated if the program is paused, not sure if that's the expected behavior

aditsu

odd, I couldn't see myself in the user list before, now there I am :)

Martin Ender

@PhiNotPi codegolf.stackexchange.com/q/53960/8478

ETHproductions

@MartinEnder Hmm... it would be harder to have it start the program and only run a single iteration, but I can try.

aditsu

@FlipTack it's "Rubik's"

funny enough, I somewhat got more into cubing recently

went to my first competition

@EᴀsᴛᴇʀʟʏIʀᴋ thanks, I didn't miss it, I'm just late to the chat ^_^

FlipTack

17:45

haha sorry, got mixed up with cubix :P

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@aditsu oh lol

I wasn't sure (though I could have googled) if it was still the 25th in hong kong

aditsu

it's 27th here

PhiNotPi

@MartinEnder thanks

aditsu

greetings from the future

what is this Cubix?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

woah do you know what I had for breakfast on the 27th?

@aditsu ETH's language, basically source code is mapped to the sides of a cube

ETHproductions

17:47

@EᴀsᴛᴇʀʟʏIʀᴋ You say this as if you're past the 27th

aditsu

depends which month/year

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@ETHproductions woah my mind is exploding /s

PhiNotPi

It's in the past of his future self.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Anymore feedback on this? I want to post it in about 10 minutes

aditsu

@EᴀsᴛᴇʀʟʏIʀᴋ must be having a most excellent adventure

Eᴀsᴛᴇʀʟʏ Iʀᴋ

17:49

yes

Kritixi Lithos

@EᴀsᴛᴇʀʟʏIʀᴋ Don't be such a Hatter :P

Eᴀsᴛᴇʀʟʏ Iʀᴋ

lel

@KritixiLithos 3 hats hopefully :P

Martin Ender

@EᴀsᴛᴇʀʟʏIʀᴋ so the output is required to be sorted?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yes

Martin Ender

any reason why?

Kritixi Lithos

17:51

You'll overtake me then, game's on

aditsu

"fairly certain" :)

Eᴀsᴛᴇʀʟʏ Iʀᴋ

not really no, I don't remember why I added it in

@MartinEnder I'll not require that, just in case somebody finds a way to golf with unsorted-ness

@KritixiLithos not really, I'm just going for as many as I can get

mego is going to win we all know

aditsu

if it's not a duplicate, that's surprising

Kritixi Lithos

I'm just glad I have over 20 hats

ETHproductions

@MartinEnder Fixed, I believe

Martin Ender

17:54

awesome, thanks :)

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@aditsu yeah, I thought so too

can't find it though

ETHproductions

It might take a minute to show up in GitHub pages though.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@aditsu closest is here

aditsu

totient function might be closer?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yeah, but that's different

very similar but different

okay, posting now

Martin Ender

17:59

@FlipTack, @ETHproductions took long enough: ethproductions.github.io/cubix/…

Eᴀsᴛᴇʀʟʏ Iʀᴋ

0

Q: Generate numbers less than and coprime to n

Given a number n, output all the numbers less than n where gcd(n, k) == 1 (with k being any one of the output numbers). Numbers of this sort are coprime to each other. Example: 10 gives the output [1, 3, 7, 9] (in any form you like, as long as the numbers are unambiguously separated and in some...

code-golf number primes

ETHproductions

You almost nailed the timing

FlipTack

nice one! @MartinEnder

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@ETHproductions yep, but it should still work

ETHproductions

But you've got the hat for sure

Eᴀsᴛᴇʀʟʏ Iʀᴋ

18:02

it's because I clicked the "done" button on the hour, then went "oh shit there's another submit button" so I hit that a bit late

Downgoat

@EᴀsᴛᴇʀʟʏIʀᴋ -1 for posting before I was just about to add built-in to cheddar :( :P

I mean functionality is there I just didnt make interface :P

aditsu

@EᴀsᴛᴇʀʟʏIʀᴋ you want numbers less than n, but 1 gives [1]?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

shit, oops

stupid vim

I tried practicing my vim by putting a 1 before every list, but didn't notice that

Martin Ender

@EᴀsᴛᴇʀʟʏIʀᴋ alternatively, make it less or equal to N and leave the test cases as they are

Eᴀsᴛᴇʀʟʏ Iʀᴋ

did that

thanks for the advice both of you

PhiNotPi

18:05

I hate how expensive textbooks are.... (just looking at my university bookstore's prices)

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@ETHproductions thanks, fixed

PhiNotPi

If I were to buy everything new (which I won't because that would be insane), my combined total for this next semester would be $1,252.80 + tax.

One of the textbooks has a rent digital option for a mere $96

New Main Posts

3

Q: Generate numbers less than and coprime to n

Given a number n, output all the numbers less than or equal to n where gcd(n, k) == 1 (with k being any one of the output numbers). Numbers of this sort are coprime to each other. Example: 10 gives the output [1, 3, 7, 9] (in any form you like, as long as the numbers are unambiguously separated...

code-golf number number-theory primes

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@flawr just wondering, is "flawr" based off your name, the word flower, or nothing in particular?

@Sherlock9 lol dennis beat your jelly by 3 bytes

his is 4 bytes

El'endia Starman

@PhiNotPi It's quite ridiculous, yeah.

trichoplax

18:12

Maybe one day we'll have free textbooks full of advertising.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@FlipTack cool, your comment also helped me remove the "set()" thing and put just [] instead!

FlipTack

yep

set accepts an iterable so you can just pass a generator

instead of a list :)

oh, you mean remove set all together! nice

@MartinEnder when will your solution appear on the thread? I need to remove my "I don't think this is the shortest answer" and put a link to yours instead

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@KritixiLithos got the hatter!

still working on lounging + egoist, don't ahve +3 on the answer or +10 yet

Martin Ender

@FlipTack oh I wasn't planning to post it, I thought you'd edit yours

DJMcMayhem

@NewMainPosts Is 1 coprime to every positive integer?

Martin Ender

18:16

it's coprime to every integer

FlipTack

I don't really want to steal your golf

Martin Ender

it's not stealing if I donate it to you :P

FlipTack

ok :)

DJMcMayhem

Oh. Do negatives have coprimes also then?

El'endia Starman

@MartinEnder Thank you for your donation of $1,000 then. :P

Eᴀsᴛᴇʀʟʏ Iʀᴋ

18:23

@ETHproductions can you replace a==1 with a<2 in your answer?

aditsu

huh, 16 bytes.. too long T_T

Eᴀsᴛᴇʀʟʏ Iʀᴋ

which lang?

Martin Ender

what's this, CJam?

aditsu

yeah

Martin Ender

CJam could use GCD/LCM built-ins ;)

Ashwin Gupta

18:32

@Downgoat the drive you asked me about last night has the cable you neeed. Works right out of the box.

DJMcMayhem

Interesting my MATL answer uses the exact same algorithm as the osabie and jelly answers, they just happened to be shorter because of encoding

Sherlock9

@EᴀsᴛᴇʀʟʏIʀᴋ And it is magnificent :)

It is also quite ridiculous

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yes

to both

Martin Ender

@aditsu I can't even match your 16

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Sheet music exact transposition As we're limited to ASCII here, I'll just refer to the notes by name A-G, although obviously real sheet music has a range of about an octave and a half even before you take ledger lines into account. Notes are written on sheet music in two ways. Most of the time,...

aditsu

18:42

I used a little trickery :)

Eᴀsᴛᴇʀʟʏ Iʀᴋ

nicememewebsitewebsitewebsitewebsitewebsite.website

DJMcMayhem

I love the way APL code looks like the face you make when you read it. ⍨ — DJMcMayhem 14 secs ago

4

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@FlipTack can you show your full code?

FlipTack

@EᴀsᴛᴇʀʟʏIʀᴋ tio.run/nexus/python3#NcoxCoAwDADAva/…

ETHproductions

@EᴀsᴛᴇʀʟʏIʀᴋ Uh, shouldn't it be a<2 instead of a>2?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

18:51

yeah, that was an edit error >_<

thanks

and I didn't notice it because I was running my saved copy, not the copy-pasted one

FlipTack

it's cool :P

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@FlipTack fixed now

can you nuke your comments? I'm nuking mine

@FlipTack .... the bump from that fix-edit and our comment discussion gave the answer 2 upvotes lol

FlipTack

good job lol

Kritixi Lithos

betseg and I created a pbrain answer to Output the first position in your program for each input character` : codegolf.stackexchange.com/a/104667/41805

3

FlipTack

@EᴀsᴛᴇʀʟʏIʀᴋ been poking at your solution, can't seem to golf! nice use of the recursive lambda at the top :)

Eᴀsᴛᴇʀʟʏ Iʀᴋ

18:57

thanks!

betseg

@KritixiLithos btw pbrain is a Brainfuck derivative with function support

FlipTack

I tried changing f to f=lambda a,b:b and f(b,a%b)or a<2, but that then adds a 0 to the start of the returned list

Eᴀsᴛᴇʀʟʏ Iʀᴋ

yep

Sherlock9

Would importing gcd be allowed?

Transcript for