The Nineteenth Byte

mousetail

16:00

above every function you need to write a comment what the function does, except the comment is just a exact copy of all the comments inside the function

thejonymyster

horrid :P

any feedback for rpsls+? i think its pretty cut n dry but i wanna make sure everything reads clear :-)

mousetail

I'd maybe expand the title

thejonymyster

oh good point

not sure how the + translates though

considering:
Rock Paper Scissors Lizard Spock+
Rock Paper Scissors Lizard Spock +
Rock Paper Scissors+
Rock Paper Scissors +

mousetail

"N-element rock paper scissors"

thejonymyster

oh duh :P ok no clickbait then

ty

also known as Nerps

mousetail

16:08

Lol turn it back into a unmemorable acronym

thejonymyster

tempting

mousetail

What would you name the last 2 elements in 7-RPS?

thejonymyster

do i have to use lizard and spock for my 4th and 5th?

cause i dont know enough about star trek to account for spock

mousetail

No you don't

you don't even have to use rock paper scisors as the first 3

I used to play with rock-laser-mirror

Seggan

whaat

that sounds fun

thejonymyster

16:18

omg thats so fun

mousetail

It's exactly the same game lol

thejonymyster

well yeah but

yknow

lazers

pew pew

mathcat

That's a gun not a laser

thejonymyster

a laser gun

mousetail

laser guns make no sound

thejonymyster

16:20

jokes aside i actually did spend an unreasonable amount of time studying the nontransitive cyclical relationship between rock paper scissors elements, trying to give them names / "numbers" that represent their place

etc

results were inconclusive because im stuptids

mousetail

I think you can arange them in a circle with complex numbers

wait nvm that would imply everything defeats itself

Seggan

@mousetail i just had to search up "can a laser break a mirror"

mousetail

IRL yes

In fiction no

IRL it's just the brightness that matters not the reflectivity

mathcat

What's that error-detection code called again which uses primes as its weights?

Seggan

@mousetail yeah i read that once the laser is strong enough the electric field around the laser will ionize anything it touches

thejonymyster

16:25

@mousetail i did one time try to relate rps to complex numbers too lol, i started with R^2=-P, P^2=-S,S^2=-R, and that all of them were nonzero

Seggan

and then your laser turns into a plasma cutter

thejonymyster

turns out, multiple solutions, various 7th roots of -1

mousetail

I think the idea with the laser mirror is that the mirror reflects some of the beam back into the laser device. It might break itself too but at least it can damage the device

Seggan

@thejonymyster what is that supposed to tell you :P

mousetail

@thejonymyster Maybe you can use vectors then cross multiply them? Since cross multiplication is inverse comutative

thejonymyster

16:27

@Seggan not much, its just a thing i did.

i was grasping at straws :P

Seggan

wolframalpha.com/…

-1 is a solution

thejonymyster

-1 is a 7th root of -1, yes

Seggan

wait so that implies everything defeats everything else?

thejonymyster

it doesnt imply anything about the game :P it wasnt very useful as an experiment

@mousetail i also tried vectors but it also didnt seem analogous to the game with various operations, or again i was too stupid to find the relationship

i spent a lot of time on this but i didnt know what i was doing XD

mousetail

It's a suprisingly hard problem

Seggan

16:30

what so what is the problem

mathcat

rock paper scissor numbers?

mousetail

Find a operation in math that can work analogous to RPS

Seggan

heres another possibility wolframalpha.com/…

R>S, S>P, P>R is the logical way of thinking of it but no numbers can satisfy it

wolfram is still solving it :P

@Seggan P=-2, R=2, S=1 is one

mathcat

wait what

Seggan

for the relation R^2>S, S^2>P, P^2>R

thejonymyster

16:40

@mousetail open-ended-function :P

Seggan

tho is squaring RPS allowed?

mousetail

I don't see why not

Is R^2 must be <= P though

mathcat

uff

thejonymyster

@Seggan i used that because it seemed appropriately related to like, imaginary stuff?

its probably not the best way to go as far as modelling the game mathematically

New Posts

0

Q: It's Just Rocket Science

Write a program/function that finds the amount of fuel needed to escape Earth's gravity well given the exhaust velocity of the fuel and the amount of mass to transport using the Tsiolkovsky rocket equation: $$\Delta v = v_\text{exhaust}\ln\dfrac{m_\text{start}}{m_\text{end}}$$ where \$\Delta v\$...

Seggan

16:43

misread

@mousetail why

mousetail

Otherwise everything beats everything

it's not really rock paper scisors if all combinations give the same value

Seggan

its not equal tho

idk what squaring a rock is :P

thejonymyster

@mousetail i suppose another good thing to look at would be something like the surreal numbers, but theyre way above my head beyond basics

mousetail

@Seggan I don't think your equation works at all, the first inequality isn't even true when not flipped

thejonymyster

maybe as functions, where R(x) < P(x) < S(x) < R(x) ?

that fails right?

mathcat

16:51

Feedback?

Seggan

@thejonymyster from your inequality it follows that R(x) < R(x), that is clearly false

thejonymyster

right lol ok i missed that

@mathcat the idea seems solid if a little easy. some of the phrasing is a bit weird, "An advantage with parity bits is, that they can't detect errors only when a multiple of n bits have been altered." seems like not an advantage? theres a couple other parts like this, im nitpicking though

mathcat

With a single parity bit you can't detect errors 50% of the time

thejonymyster

ohh

what happens if you use more parity bits than the length of the message :P

Seggan

i found it

assuming R = 0, S = 1, P = 2:

R - P mod 3 = P
R - R mod 3 = 0 (tie)

S - P mod 3 = S
S - R mod 3 = R

thejonymyster

17:03

woah

Seggan

credits to this guy

basically, a - b mod 3 = 0 if tie, otherwise a - b mod 3 = the winner

thejonymyster

wait

but R is 0

S - R mod 3 = 0, is that a tie or did R win :P

Seggan

oops misread

a - b mod 3 = 0 if tie, otherwise a - b mod 3 = 1 if a, 2 if b

thejonymyster

ahh

that makes more sense

Sandbox Posts

0

A: Sandbox for Proposed Challenges

Prime checksum Given a message, append a checksum digit using prime numbers as weights. A checksum digit is used as an error-detection method. Take for example the error-detection method of the EAN-13 code: The checksum digit is generated by: Multiplying each digit in the message alternating by ...

Seggan

17:08

then heres the corrected list:

assuming R = 0, S = 1, P = 2:

R - P mod 3 = 2
R - R mod 3 = 0 (tie)

S - P mod 3 = 1
S - R mod 3 = 2

DLosc

@Seggan I think you have your 1s and 2s switched. 0 - 2 mod 3 is (-2) mod 3 is 1, not 2

Seggan

17:26

i think i do

mathcat

Is there a sequence (except Fibonacci) where a recursive approach is shorter than the iterative one?

Seggan

iterative is shorter for fib too

in golflangs at least

or is it more properly called reductive

thejonymyster

yeah it depends on the language a lot i imagine

mousetail

17:57

@Seggan Nice

does it work with 5 and 7?

mathcat

@thejonymyster clarified that

thejonymyster

@mathcat ty that clears it up, especially the latex stuff after

Seggan

58 mins ago, by Seggan

assuming R = 0, S = 1, P = 2:

R - P mod 3 = 2
R - R mod 3 = 0 (tie)

S - P mod 3 = 1
S - R mod 3 = 2

check the reddit post

did phil.SE get a new logo?

DLosc

18:40

Yep

Sep 19 at 20:31, by DLosc

Ooh, Philosophy.SE got a site design

thejonymyster

19:03

@Seggan dont call it that i just went on a site called phil.se i could have gotten a viroso x_X

Seggan

i mean .SE is pretty obvious what it means

thejonymyster

ok fair enough i honestly thought itd redirect

like a youtu.be or something

mathcat

or mathcat.surge.sh

thejonymyster

T_T i was excited to check out your cool website

emanresu A

@mathcat Been there, done that

mathcat

19:19

Rule 34: Never assume a surge.sh website is not a rickroll

thejonymyster

hmm

Seggan

vyxal.surge.sh

emanresu A

You can blame a friend of mine for that one

thejonymyster

@Seggan how to delete browser history along with proof that i ever had a browser

mathcat

@Seggan what the actual frick

emanresu A

19:26

The new version is even worse

Radvylf Programs

→ 2 messages moved to Off-Topic TNB

Radvylf Programs

19:49

Okay so, my golfing languages are going to have two number types, floats and ints

Any time they're used together, a float is returned

If an arithmetic operator is given no inputs, for example, add(), should it return a float or an int?

A float would make sense since that's the "main" number type, but an int would make sense since it's more of a recessive trait, and will keep the type of whatever it's added to (so it behaves more like a no-op)

thejonymyster

@RadvylfPrograms depends, do you want f(noarg(),int) to return a float or an int?

DLosc

20:22

@RadvylfPrograms Int, for the reason you mentioned

thejonymyster

(my personal vote is also int yea)

DLosc

20:43

CMC: Compute the following sequence (standard sequence rules apply):

0: []
1: [[]]
2: [[],[[]]]
3: [[[]],[[],[[]]]]
4: [[[],[[]]],[[[]],[[],[[]]]]]
etc.

The first two terms are [] and [[]]. After that, each term is a list containing the previous two terms.

thejonymyster

omg the fibonacci set :heart_eyes:

in js its probably only slightly longer than the fib answer, literally just copying the definition

hyper-neutrino

40 bytes in python, Try it online!

DLosc

21:09

38 bytes as a full program that prints forever

Codidact Posts

21:47

New Posts - Challenges - Code Golf: Rationalise recurring binary

posted on September 27, 2022 by trichoplax‭

Given a potentially recurring binary string, output the number it represents, as a fraction in lowest terms. The notation used in this challenge for recurring digits is non-standard. An ...

Codidact Posts

22:13

New Posts - Challenges - Code Golf: 55 fruit salad: choose your own Kolmogorov complexity

posted on September 27, 2022 by trichoplax‭

This is a fixed output challenge. It is similar to a standard Kolmogorov complexity challenge, except you get to choose your own fixed output. Given no input, output 55 fruits. You may choose an...

Aiden Chow

22:38

Prolog 47 bytes: tio.run/##FYwxC4UgGAD/…

Seggan

@DLosc Fig, ~7.408 bytes: Gw`)W`)@w

Aiden Chow

Could probably be shorter but I’m a newb lol

Seggan

im sure can be made shorter (the Fig answer)

Aiden Chow

Ok wait 45 bytes by taking out the parentheses

emanresu A

@DLosc Vyxal, 8 bytes (wow this is unreadable)

7

get destroyed fig

@DLosc 37

thejonymyster

23:06

@thejonymyster im wrong, no idea how to approach it in js :P

caird coinheringaahing

23:27

@DLosc Isn't that the standard set-theory building of integers?

@DLosc Jelly, 3 bytes

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