The Nineteenth Byte

trichoplax

10:00

D. The mean of the two primes

Mr. Xcoder

@trichoplax The mean of the two primes would be the number itself, which would be a non-sense.

I will go with option A, because OEIS, Mathematica and MathWorld pick it too

oeis.org/A051697

> Closest prime to n (break ties by taking the smaller prime).

trichoplax

Indeed. It wasn't serious. All the genuine options seem prone to misunderstanding, but A or B will probably break least code where it doesn't matter.

Mr. Xcoder

Poll closed.

@trichoplax Correct :P

ASCII-only

@Mr.Xcoder why do you need one

Mr. Xcoder

@ASCII-only For Cthulhu, which happens to be a number-manipulation language

ASCII-only

10:04

@Mr.Xcoder isn't MathWorld pretty much Mathematica encyclopaedia?

@Mr.Xcoder still when would it ever be useful

Mr. Xcoder

@ASCII-only It is. I searched all their references

@ASCII-only Of course

ASCII-only

@Mr.Xcoder I asked when :P

Mr. Xcoder

For example:

8

Q: Code-Challenge:The Nearest Prime

Challenge In this task you would be given an integer N you have to output the nearest prime to the integer. If the number is prime itself output the number. The input N is given in a single line,the inputs are terminated by EOF.The number of inputs would not exceed 10000 values. The c...

ASCII-only

@Mr.Xcoder apart from this

Mr. Xcoder

I also have built-ins for next_prime and previous_prime, as well as prime factors

ASCII-only

10:06

@Mr.Xcoder why call it Cthulhu

Mr. Xcoder

@ASCII-only Who knows?

@ASCII-only Let me link to the reference.

ASCII-only

@Mr.Xcoder exactly, never :P

Mr. Xcoder

@ASCII-only It is a nice addition to the language

I am having trouble finding the reference, wait a bit

ASCII-only

@Mr.Xcoder but... but it's wasting a byte that could be put too much better use

Mr. Xcoder

Cthulhu won't be ASCII-only, so that should not be a problem. I'll see if I keep it or not.

ASCII-only

10:11

@Mr.Xcoder neither is Charcoal, but Charcoal is still running out of codepage space

Mr. Xcoder

@ASCII-only It was a comment of MEnder, which told someone that undefined behaviour means you can do anything, including summoning Cthulhu. And then I decided I should create my own language (and being influenced by that comment), I called it Cthulhu.

I couldn't find the comment. It has probably been removed or something.

You know, Cthulhu, Charcoal...

@Qwerp-Derp Is the github repo golf all the Euler's dead?

ASCII-only

@Mr.Xcoder what's the link between the two

@Mr.Xcoder ???

Mr. Xcoder

@ASCII-only Ignore that

@ASCII-only It was just crazily amuzing in that context and that comment received tenths of upvotes, and was really inspiring. Cthulhu is strong, and thus has enough force to manipulate all those numbers :)

ASCII-only

@Mr.Xcoder :| Ok i guess

Mr. Xcoder

@ASCII-only How's Charcoal doing?

ASCII-only

10:19

@Mr.Xcoder what do you mean

It might need a rewrite? Not sure if it's current paradigm is as golfy as it can be

Also needs SOGL compression, will do pretty soon

Mr. Xcoder

Wanna steal stuff from dzaima :P

ASCII-only

And I'll have to continue working on Wolfram Language stuff sometime

@Mr.Xcoder exactly :P

Also needs more ASCII art builtins

Mr. Xcoder

@ASCII-only Even more :O - Good luck doing them all. Cthulhu will suck at ascii-art

ASCII-only

@Mr.Xcoder no as in literal ASCII art

Mr. Xcoder

Oh

ASCII-only

10:23

@Mr.Xcoder well yeah it's a number language >_>

Like how Charcoal sucks at numbers atm

Mr. Xcoder

Poll: sympy or custom algorithm?

ASCII-only

@Mr.Xcoder custom

Mr. Xcoder

I already have sympy :P, since it is much more efficient. Dennis also uses it for Jelly, so I think it's safe :)

And I am a bad algorithm writer, sooo...

ASCII-only

Then why are you asking at all lol

Mr. Xcoder

@ASCII-only Because I want to see if numpy is realiable

I think? it is, but I am not convinced

ASCII-only

10:25

@Mr.Xcoder why would it not be

Mr. Xcoder

IDK

GTG, o/

trichoplax

If there's a reason to think it's unreliable, you could fix their algorithm rather than write a new one, since new algorithms will likely need more fixes than existing ones, unless what you need is a simplification of what the library algorithm does

Mr. Xcoder

I am back

New Main Posts

11:28

0

Q: A program that outputs itself in reverse order

Well the title says it all. Standard loopholes apply Nothing to read from stdin, and output goes to stdout 1-byte-long programs are... nonsense. They don't qualify A program with a single byte repeated is also a nonsense (like aaa) Please mark it out if your program is a palindrome Sample: ...

code-golf

New Sandboxed Posts

11:39

0

A: Sandbox for Proposed Challenges

test-battery code-challenge word decision-problem Is it a noun? Given a string as input, determine whether it is a noun or not. You will be scored on the 1000 most common English words, by how many you correctly label as a noun or not. The program or function which correctly classifies the mo...

isaacg

I'd be interested in comments on my sandboxed question.

New Main Posts

12:17

0

Q: Maximum sub-array

Define the "maximum sub-array" of a given array as "a (consecutive) sub-array that has the biggest sum". Note there's no "non-zero" requirement. Output that sum. Sample input 1: 1 2 3 -4 -5 6 7 -8 9 10 -11 -12 -13 14 Sample output 1: 24 Description 1: The biggest sum is yielded by cutting 6 ...

code-golf array-manipulation

Leaky Nun

> In cases where a word could either be a noun or some other part of speech, I tried to classify it by its primary part of speech.

@isaacg why?

who said that a word can only have one part of speech?

report can be a verb or a noun, so it is both a verb and a noun

isaacg

That's a good point. I'll change it.

@LeakyNun OK, I changed that.

Leaky Nun

@isaacg why is "a" a noun?

isaacg

I think it's from the usage as a letter

officialaimm

@LeakyNun That's because we are talking about context-sensitive grammar right? Or did I get it wrong?

Leaky Nun

12:28

@isaacg so is "b" a noun?

isaacg

b isn't a common word, so its not on the lists

Leaky Nun

@isaacg I?

isaacg

That was somehow left off my common word list - something is wrong.

Ok, I found a better word list simple.wikipedia.org/wiki/Wikipedia:List_of_1000_basic_words

A is a noun, I is not. Huh.

Oh, the usage as a noun makes sense: "I got an A on my test". Yep, that's being used as a noun.

officialaimm

@isaacg That would probably be because the pronoun I is more common than the letter I reference?

isaacg

I switched away from primary usage to any usage. Article A is more common than noun A, but I'm counting it as a noun anyways.

Nothing's going to be perfect. I'll put a clarification to that effect in the challenge.

trichoplax

12:47

As long as it's well defined for the test cases, I don't think it really matters

New Main Posts

0

Q: Translate Braille and ASCII

Challenge Write a program that when executed in one language translates alphanumeric ascii input to the corresponding braille symbol. If executed in a second language of your choice it has to translate the encoded input back to the initial ascii text. You do not have to handle punctuation, but y...

code-golf string polyglot unicode

isaacg

OK, I think I fixed stuff.

Mr. Xcoder

14:32

long long long also crashes C++ (GCC)

Did anyone ever post an answer in Objective-C here on PPCG?

It seems there are many, in fact

New Meta Posts

15:23

0

Q: What does "Standard loopholes apply" mean?

I'm new to PPCG and I've seen a bunch of questions with this line in their requirements: Standard loopholes apply. A quick search on Meta tells me it's a series of restrictions, or disallowed things. However today I saw a question with this statement: Standard loopholes are forbidden. ...

support

HyperNeutrino

@ConorO'Brien ._.

@ConorO'Brien what do you mean ._.

Conor O'Brien

@miles nice! thanks a lot

@HyperNeutrino the lines are like 100+ chars long lol

HyperNeutrino

oh you were reading my source code :P

Conor O'Brien

@HyperNeutrino Try it online!

HyperNeutrino

15:38

that's equivalent to two expressions, each of which do absolutely nothing :P a key feature is that like Python, semicolons are unnecessary, but in contrary to Python, semicolons aren't even required for two statements on the same line

expressions can be combined using operators but if two expressions are adjacent without an operator then they are individual expressions

Like so: Try it online!

Conor O'Brien

so it's like js's ASI?

HyperNeutrino

what is that ._. I don't know most CS terms(/abbreviations)

Conor O'Brien

it's not a cs term. "automatic semicolon insertion"

HyperNeutrino

oh

I guess? I haven't used JS in a while and I forget how it works

Well not quite; a=1 b=2 breaks JS (from Chrome console) but not Proton.

Conor O'Brien

right

but a=1\nb=2 works

HyperNeutrino

15:41

ah, yes

that works in Python too

Conor O'Brien

not the same thing, for python. python doesn't require semicolons, whereas js "does"

HyperNeutrino

oh? oh so JS requires them but puts them in if you don't?

Conor O'Brien

yup

miles

@ConorO'Brien no problem, was it what you were looking for?

HyperNeutrino

CMP: In Proton, should map, range, zip, etc. give map, range, and zip objects, or should they return a list?

Conor O'Brien

15:49

@miles I was hoping for something a little golfier, but it is quite nice. (I'm working on your "disappearing elements" challenge.)

using your adverb, >@(({.,>:@[}.])&.>/@|.@;;/)~^:(*@#@[) would work, but I believe I can get lower using a different approach

miles

I see, I haven't really tried a J solution for it as I made the test cases by hand

ppperry

Does proton support the *list operator?

Conor O'Brien

I think my best bet would to transform the input indices from (say) 1 4 4 0 2 to 1 5 6 0 4

miles

Something that might help is that you can perform removal using rotate, }.&.(2&|.) 'abcde'

HyperNeutrino

@ppperry No; I might implement it sometime in the near future.

Maltysen

15:54

@HyperNeutrino proton?

HyperNeutrino

For functions (or really just lambdas since functions don't exist yet), you use ... for varargs

@Maltysen new language I'm making

so like f = a, b, c..., d, e => something()

also something I quite like about Proton is that you can put varargs in the middle of a parameter list

However, you can only have one ...

ppperry

in that case, I have no opinion about map/range/list

HyperNeutrino

Ah okay. For map/range/zip, you'd need list(map(..., ...)) for it to give you a list, otherwise it would be a map/range/zip object

anyway gtg for a bit o/

New Main Posts

-4

Q: Java codes for scroll bars

Please what code will let scroll bar display a hidden portion of a page? I am designing a graphical user interface with Net beans. I have designed a registration page, but the scroll bar does not display the hidden part of the page

programming-puzzle

HyperNeutrino

16:28

CMP: *a or a... for varargs?

Conor O'Brien

for a function?

HyperNeutrino

yes

dzaima

@HyperNeutrino both :p

HyperNeutrino

ಠ_ಠ

Erik the Outgolfer

@HyperNeutrino chat mini poll?

HyperNeutrino

16:32

yes

Erik the Outgolfer

of course *a is golfier

HyperNeutrino

yes but which one is more readable? (the language is meant for readability not golfing)

Erik the Outgolfer

and I hate a... for some reason

Conor O'Brien

I like declare vararg(a) /s

HyperNeutrino

It resembles Java

Zacharý

16:33

@HyperNeutrino Positron?

dzaima

really why not both? Then everyone trying to use positron will be happy

HyperNeutrino

@Zacharý No, Proton.

Erik the Outgolfer

well I'd say *a is better than a...

HyperNeutrino

I abandoned it and started making Proton because Positron is trippy

I prefer only having one though, personally. I could try implementing both

Erik the Outgolfer

@HyperNeutrino eugh by no means it'd be confusing

Zacharý

16:34

*a in my opinion.

Erik the Outgolfer

well I have no clue what a... would represent...especially since in python 3 it would be two objects next to each other (object and Ellipsis) == syntax error

HyperNeutrino

I'm going to do *a then. More people like it and it's the same for Python.

Proton has much more flexible syntax than Python IMO. You can place two expressions right next to each other without borking

on the same line, without semicolons

Erik the Outgolfer

if it takes function arguments like f a b c for example?

Zacharý

I was about to think Proton was a statically-typed scripting language, but then I realized int a = 2 would be int; a=2

HyperNeutrino

well there are no named functions, only lambdas

so f = a, b, c => something

Erik the Outgolfer

16:36

oh so you assign a lambda to a variable to "define" a function?

HyperNeutrino

or for varargs (right now), f = a, b..., c => something

@EriktheOutgolfer yes

Erik the Outgolfer

then how are you going to support statements in it?

Zacharý

tio.run/##KyjKL8nP@/8/UcFWwYiroCgzr0QDyAZyNP//BwA. What on earth.

Erik the Outgolfer

(that is, well, excluding any exec-like function)

HyperNeutrino

@EriktheOutgolfer {}

@Zacharý I thought I fixed that ._.

oh yeah TIO is behind

Zacharý

16:38

Might just not be on TIO yet,.

HyperNeutrino

(ninja'd)

Zacharý

How hacky would it be to make an APL dialect designed for golfing by using Dyalog/GNU/ngn's ⍎ for interpretation of the language?

HyperNeutrino

?

like build APL into Proton?

Erik the Outgolfer

it's not for golfing I think?

Zacharý

No, I might make an APL golfing dialect.

HyperNeutrino

16:40

huh

Isn't APL golfy enough as it is already? :P

Zacharý

(Mostly abusing codepages of course)

What even was the bug that caused == to not work properly?

TuxCopter

Halp I am getting Error: struct std.container.array.Array(T) if (!is(Unqual!T == bool)) is used as a type when I try to declare a field with the type std.container.array.Array in D

But it should work as it is used as a return type and argument type in the source of std.container.array.Array

Zacharý

May I see the code?

TuxCopter

class Game {
    ...
    Array!Entity entities;
    ...
}

HyperNeutrino

@Zacharý == was comparing 2 to an Identifier instance as opposed to the value it carried. That was fixed by applying f(evaluate(ident, symlist)) instead of hardeval(ident, symlist) in _ which is used by most binary operators to get objects and a symbol list and apply the regular operation

Zacharý

16:51

I have no idea, TuxCopter, to be honest. Is that where the error occurred?

TuxCopter

Yes

Zacharý

Did you forget a semicolon somewhere? Is Entity a class or a struct?

TuxCopter

Entity is a class, and I didn't forgot a semicolon

Wait

Zacharý

Well, this works fine: tio.run/##S/n/…

TuxCopter

The error occured at the initialization where I used a new to initialize but Array is a struct so it borked

>_>

Zacharý

16:57

So, you're making a game in D?

TuxCopter

Yeah a roguelike

Zacharý

What library are you using to make it (if any)?

TuxCopter

Nothing except ncurses

Zacharý

Welcome to hell my friend.

HyperNeutrino

lol the nice thing about the way I set up Proton is that I can add new syntactical components in like 10 minutes

@Zacharý o_O what is that

TuxCopter

16:59

@Zacharý reset FTW

Zacharý

D runtime error along with an unclosed Ncurses window...

@TuxCopter What do you mean?

TuxCopter

@Zacharý There's the reset command to reset the state of the terminal

It fixes unended curses windows

Zacharý

I wish I would've known that before, thanks.

HyperNeutrino

curses in Python is confusing. Is there an equivalent to reset?

Zacharý

(Reset is a bash terminal command)

HyperNeutrino

17:02

I found resetty() but it doesn't work properly I think

@Zacharý (there's a Python library too)

(oh)

Zacharý

So, you're interfacing directly to C TuxCopter?

HyperNeutrino

Hey that's nice

so I just do os.system('reset') :P

anyway gtg for a bit o/

TuxCopter

@Zacharý I'm using the Deimos ncurses binding

Zacharý

Oh, well, nvm about hell then. I didn't know that existed, so I interfaced directly to C. >_<

Zacharý

17:22

Hey, do you know how to get Allegro5's D binding to work (I have GDC)

TuxCopter

Nope

Zacharý

Guess I'll stick with hacky C interfacing then.

TuxCopter

Is there any SDL binding for D?

there doesn't seem to be any on DUB

Zacharý

Derelict?

TuxCopter

Oh thanks

Zacharý

17:44

Hey, did you hear the news? gcc.gnu.org/ml/gcc/2017-06/msg00111.html

TuxCopter

:o

Zacharý

Yep, D will be in GCC one day!

TuxCopter

Huh, it seems that it's not possible to get a reference to this

And auto t = this; ptr = &t; crashes

Conor O'Brien

whoa

CMC: print × without × in your code

Erik the Outgolfer

jelly 5 bytes

Challenger5

17:54

CJam: 215c

Erik the Outgolfer

18ịØJ

or 215Ọ for 4

TuxCopter

@ConorO'Brien print"\xD7" Python2

Erik the Outgolfer

@TuxCopter heh xD

Conor O'Brien

C: main(){putchar(&main);}

8

Zacharý

MY, 5 bytes: 7Dǵ'←

Erik the Outgolfer

17:56

@ConorO'Brien O_O _ O_O _ O_O _ O_O

Zacharý

Woah.

Erik the Outgolfer

@ConorO'Brien try running it on tio too?

TuxCopter

@ConorO'Brien o_o

Erik the Outgolfer

maybe it's just a coincidence or something...

Conor O'Brien

click the link

Erik the Outgolfer

17:57

then try running it locally

TuxCopter

@ConorO'Brien Prints & on my machine

Erik the Outgolfer

yeah I knew it was a coincidence or something...

Conor O'Brien

oh yeah it is

mine prints 0xC0

Challenger5

Check: >215o

Erik the Outgolfer

05AB1E, 3 bytes: Ƶ>ç

because Ƶ means "take next char convert it from base 255 and add 101"

Challenger5

18:01

Why is that a builtin

Erik the Outgolfer

why not?

2

Conor O'Brien

it's good for large numbers

TuxCopter

@EriktheOutgolfer That's really specific

Erik the Outgolfer

you can do from 101 to 355 like that

Challenger5

I guess that makes sense...

If we're allowed to print other stuff too, then Jelly, 2 bytes: ØJ

Erik the Outgolfer

18:04

oh btw I think we should've been able to do 101 to 127, 129 to 255 and 257 to 357 though

128 and 256 are already 2-byte builtins

@Challenger5 hehe cheater

Challenger5

That approach also works as Wc, in CJam (push negative one, convert to character (implicit modulo 65536), character range)

But don't run it - it really breaks things (at least on TIO)

Zacharý

18:24

Try adding functions before main: tio.run/##S9ZNT07@/z9NQ7O6NjcxMw9IF5SWJGckFmmogfia1rX//wMA

Erik the Outgolfer

@Challenger5 no it doesn't

Challenger5

Well it doesn't break things, but it lags up my browser (although that may have something to do with the fact that it generates a lot of output)

In any case, most people don't really like looking at a mess of meaningless Unicode.

New Main Posts

0

Q: Find the smallest unique sublist

Given a list of lists find the smallest list that is a sublist of exactly one list. For example if we had [[1,2,3], [1,2,3,4], [2,4,5,6], [1,2,4,5,6]] The smallest sublist would be [3,4] since it only appears in the second list. If there is no unique sublist, output an empty list (this re...

code-golf array-manipulation

HyperNeutrino

CMP: Who here has played (The Battle of) Polytopia (formerly Super Tribes), and if so, who would be interested in a Polytopia-like (simplified) KoTH?

New Main Posts

19:04

2

Q: Is it a noun or not?

Given a string as input, determine whether it is a noun or not. You will be scored on the 1000 most common English words, by how many you correctly label as a noun or not. The program or function which correctly classifies the most of those words in 50 bytes or less will win. Nouns A noun is ...

code-challenge decision-problem natural-language test-battery

muddyfish

@isaacg yes. Pyke was directly inspired by Pyth

Pavel

21:06

@Downgoat is the VSL online interpreter just completely broken or am I using it wrong? 2 + 2 errors for me.

wizzwizz4

I've been question-banned from Stack Overflow, partly from bad questions, partly from badly-written questions and from one badly-received question that I don't understand the downvotes on. :-) Does anyone have time to have a look and suggest some more improvements?

HyperNeutrino

Wait question-banning is that strict? :(

Zacharý

Wait, question-banning is a thing?

HyperNeutrino

For this question, you've shown no research effort or code that you've tried; it makes it fairly difficult for users to help you; a minimal example that reproduces the error is usually appreciated. Now, in this case, that doesn't make sense, though you could try to phrase it more into a question than just a statement.

Duplicate

No research effort either; you could test it at least

Wait yield from is a thing? :o

Also for that question, you can't implement both addition and concatenation; I mean, they're the same operator. Instead, if you're not using multiplication, you could theoretically use multiplication for concatenation.

No idea what's wrong here

Duplicate

Zacharý

Heh, duplicate duplicate.

HyperNeutrino

21:17

And 3 more with non-negative net score.

wizzwizz4

@HyperNeutrino That one was intended to help other people - it was the second time I'd looked that exact error up with no relevant results and had to hunt for it - the only way I found it the second time was sort of remembering the search query I used last time.

It wasn't intended to get downvoted though. :-p

HyperNeutrino

So essentially you were trying to create a marker for others to follow to the same question, or something?

wizzwizz4

@HyperNeutrino That one was asking for best practices. I had working code.

HyperNeutrino

Ah okay. Makes sense; I gave it an upvote earlier too.

wizzwizz4

Some of them, like the duplicate, are unsalvageable.

RE this question, am I right in thinking that it could be implemented with mmap in C?

Downgoat

21:24

@Pavel You need to load the stdlib first. The version online is the one without module support so you have to manually load the STL, but I have a version I have yet to push (testing it) which fixes that

wizzwizz4

@HyperNeutrino Does this help to explain what was wrong? :-)

> Flash hacks and other crude methods welcome if they are effective enough.

Flash. *shudder*

HyperNeutrino

@wizzwizz4 oh hum maybe :P

Pavel

21:40

@Downgoat How do you load the stdlib?

Downgoat

well you have to manually get the STL files and create a ModuleInterface to read them and then subclass CompilationIndex to pass that module (as a CompilationGroup) to it so not so easy >_<

Pavel

Guys, I need some help. I'm using Bash (on windows) and I need to run a .bat file. Running it normally tried to run the file as if it were written in bash, which it isn't. How do I run it as a batch file?

Zacharý

@Pavel The problem is you're using Windows. (I have no clue how to fix your problem)

Pavel

21:55

I have to use Windows for work, can't do much about that.

Zacharý

Try piping into cmd?

Pavel

That might work. Good thought.

Zacharý

Or just delete system32 /s

Pavel

The solution I went with is "Stop being a lazy fuck and open powershell"

Maltysen

anyone good at math here? i have a small question

Pavel

22:04

Although to be fair my powershell looks a little weird, I screwed something up with it.

Zacharý

@Maltysen Fire away

Maltysen

@Zacharý I recently learned about the jacobian

and the thing in surface integrals

Zacharý

@Maltysen I REGRET EVERYTHING

@Pavel I thought PS used unicode?

Maltysen

where you multiply f(r) by |dr/du cross dr/dv|

seems like the jacobian

but in 3d, its not a square matrix so how take the determinatn

@Zacharý oh lol

Pavel

@Zacharý I have no idea where that character comes from. Copy pasting it somewhere else shows a backslash.

Also, even without that, it looks ugly af

Well, time to finally install Arch on Windows

Zacharý

22:07

shutdown /f

Pavel

ಠ_ಠ

It bothers me to no end that MS went with / instead of - for flags.

2EZ 4RTZ

uhh how would you have O(1) space complexity with variable input size?

Nvm SO answered

Zacharý

@2EZ4RTZ Assume all integers have constant storage size (at least for theory)

Pavel

22:27

@Zacharý HMMMMMMM...... encodes all needed data as a single number

2EZ 4RTZ

openai.com/the-international

I think openAI is something everyone here would like. openai.com It is open source AI and it is very well done. The link above is a page where the AI beats the best dota players in 1v1

Helka Homba

22:42

Anyone know how to link to a specific definition number on dictionary.com (or merriam-webster.com) like #14 at dictionary.com/browse/front

Anonymous

Friendly reminder that I still need handwriting samples for a challenge.

DJMcMayhem

23:15

@2EZ4RTZ Summing a list (for example) would be O(1) because the stored vars (current_sum, and loop_counter) don't take more space as the input grows

noɥʇʎԀʎzɐɹƆ

It looks like Chemistry.SE has their own game of golf... chemistry.stackexchange.com/questions/80947/…

13

Golfing the synthesis of a molecule

New Main Posts

2

Q: Generate a congruent list with the smallest sum

Two lists A and B are congruent if they have the same length, and elements that compare equal in A compare equal in B. In other words, given any two valid indices x and y: If A[x] = A[y], then B[x] = B[y]. If A[x] != A[y], then B[x] != B[y]. For example, the lists [1, 2, 1, 4, 5] and [0, 1, ...

code-golf array-manipulation

ASCII-only

@Challenger5 If it lags up your browser there's something wrong with your browser :|

@Pavel ~~There is no online interpreter (i.e. that's not an interpreter)~~ wait wat

@Pavel :| this is wrong encoding is why

@Maltysen you don't?

Maltysen

yeah i know

but i meant how to come up with the area scaling factor

if you can't take the determinant

how is |dr/du x dr/dv| related to the determinant cuz it seems to be pretty much the same thing

ASCII-only

23:31

O_o i just found a math question on SO

@Maltysen but isn't that the determinant

Maltysen

@ASCII-only in this case r is 3d

ASCII-only

oh .-.

@Maltysen this probably doesn't help (page 8)

Maltysen

no thats 3 vars->3 vars

ASCII-only

@Maltysen wait what how is that not 3d >_>

Maltysen

@ASCII-only im trying to do turface integrals

which give (u,v) -> (x,y,z)

*surface

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23:41

also probably doesn't help

Downgoat

@ASCII-only btw pls see slack

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