The Nineteenth Byte

20:09

in Jelly Hypertraining, 2 mins ago, by caird coinheringaahing

CMC: Write a program which produces an output containing a symbolic number

Specifically a Jelly program, but I'm also interested in seeing solutions in langs that shouldn't have support for symbolic numbers

Aaron Miller

What is a symbolic number?

caird coinheringaahing

Basically a number with infinite precision. Mathematica's the most common user, but other langs use them as well

sympy numbers in Python

hyper-neutrino

this works but I suppose it's kinda boring

Jelly, 41 bytes: “atoms["®"].call=lambda:sympy.sqrt(5)”ŒV®

caird coinheringaahing

I have 7 bytes in Jelly :P

hyper-neutrino

lol

Redwolf Programs

20:13

There's no way to compress atoms or call or lambda or sympy or sqrt?!

hyper-neutrino

gonna bet it's some weird bug/UB

caird coinheringaahing

@RedwolfPrograms There is, I'm guessing hyper cba :P

hyper-neutrino

Jelly, 39 bytes: “atoms["®"].”;“¡⁼ạ²ḞĿ÷=þ¹ßxuẹæk;żð⁽»ŒV®

caird coinheringaahing

actually wait no. ® can't be in compressed strings, so it gets weird

hyper-neutrino

or i just join two strings :p

Redwolf Programs

20:14

Is there a way to represent it in three bytes with unicode?

caird coinheringaahing

I suppose “atoms["0"].call=lambda:sympy.sqrt(5)”ŒV0 would also work, and be compressible

hyper-neutrino

Jelly, 37 bytes: “Ñ;ġ×[“©.3QŻȧḲƥʂỵ/JÆ÷⁾Ðj+BƊ¢QI»j”®ŒV®

@cairdcoinheringaahing keyerror

also i don't think 0 can get parsed into an atom

caird coinheringaahing

“atoms["S"].call=lambda _:sympy.sqrt(5)”ŒVS works

hyper-neutrino

oh what

i tried that with "A" and it didn't seem to work

caird coinheringaahing

Because it operates on the [] returned by ŒV

hyper-neutrino

20:16

.-.

Jelly, 36 bytes: “þẇịfṭQ⁹ẹ}©÷-ȷBṃẠ÷S¡Ėḷ÷q¡ƈByṪḞñ3»ŒVS

caird coinheringaahing

Here's 7 bytes if you want a spoiler :P

hyper-neutrino

does this rely on digging through source code to find weird interactions :p

caird coinheringaahing

I didn't find it by source code digging :P

Redwolf Programs

Is "jsym" a good name for a JS symbolic number library, or is it to easy to mispronounce in an...unfortunate way?

caird coinheringaahing

I'd pronounce that as "J-sim"

If the y and s were swapped, it'd be bad. Otherwise, it's probably fine

hyper-neutrino

20:23

same, and I'm also not quite sure what the unfortunate pronunciation is

caird coinheringaahing

Try pronouncing "jysm"

hyper-neutrino

oh, i see

caird coinheringaahing

No, that's "oic" :P

hyper-neutrino

ಠ_ಠ

forbes.com/sites/gordonkelly/2021/07/07/…

important windows security update apparently

as in like, apparently windows has some random ACE exploit that lets ppl run arbitrary code at system-level privs????

caird coinheringaahing

That's probably why my laptop restarted overnight, I was wondering about that

Redwolf Programs

20:27

My only laptop that is capable of running windows is currently waterlogged and broken in half so I guess I don't need to worry

hyper-neutrino

> broken in half

F

caird coinheringaahing

@RedwolfPrograms But what if hackers get sys-level privs???

Redwolf Programs

> Why has PrintNightmare been so damaging? Because it was an accident.

Well...yeah

hyper-neutrino

> Security researchers accidentally published their proof-of-concept (PoC) exploit online which meant Microsoft was caught completely off guard and hackers were spoonfed all the information required to start taking advantage of Windows computers around the world.

ಠ_ಠ

caird coinheringaahing

@RedwolfPrograms In other news, Microsoft claims they haven't intentionally added a major security flaw to their laptops

Redwolf Programs

20:30

Major security flaw: We trust all of our money, communications, and military technology to bricks of sand

Luckily they mostly do what we want

caird coinheringaahing

I don;t know how sympy calculates matrix power for rational powers, but it seems to have bricked my Python :/

A username

I got that and saw this

15

A: r flag my Vyxal

05AB1E, 15 12 10 bytes This could be 9 bytes without the l, but why would I remove that? SvyxaliŠìì Try it online! S # split the input into a list of characters v # for each character y: y # push y x # duplicate TOS and double the copy ...

:O

Christopher

Hey there

hyper-neutrino

welcome back o/

Christopher

its been a while lol

caird coinheringaahing

20:38

How're you doing?

Christopher

good, collage is being a bitch though

My C++ won't write to a file like it should

caird coinheringaahing

@Christopher Too much glue? :P

Christopher

How about you?

@cairdcoinheringaahing need to drink more of it and it would be fine

caird coinheringaahing

Good. Just got my first dose of the vaccine today :D

Christopher

noice

Was able to get that a month or so ago

caird coinheringaahing

20:39

I'm now 50% immortal :P

Christopher

Just wait till the Covid 1.2 patch comes out, bug fixes and patches the vaccine exploit

caird coinheringaahing

@Christopher The way the US has rolled it out is crazy tbh

Christopher

Yeah it was pretty nuts, i got an alert of my phone and was able to get it the next day. And i am not in any of the high priority groups

caird coinheringaahing

@Ausername I love that ovs went through the hassle of using <pre> tags in order to bold the Vyxal :P

A username

Ux.....

Excuse me....

Redwolf Programs

20:48

Nice ratio

A username

Yes

Redwolf Programs

It also has a nice color scheme

A username

They all do

Redwolf Programs

Although they're colors that don't exist in the real world

A username

Yes they do, on screens!

Redwolf Programs

20:50

Not the physical colors, the ones I see from synesthesia :p

1 is whitish, 8 is dark grayish, and 6 is a sort of wood colored brownish

A username

Oh

@lyxal Can we have a flag for rational numbers in internal computing?

Redwolf Programs

Don't encourage the flagssss

user

@Ausername Probably best to ask about this in Vyxal, but +1

A username

This is an actually useful flag

Like O

Redwolf Programs

Putting useful stuff in flags is what's problematic though

2

If the flags were like "make the stack flip all of the numbers upside down and feed them through an AI trained on roman numerals" I'd be fine with them

hyper-neutrino

20:55

@cairdcoinheringaahing wait, which one of these is a symbolic number lol

@RedwolfPrograms don't give lyxal ideas xD

caird coinheringaahing

@hyper-neutrino The *I is sympy's I, not Python's j

hyper-neutrino

oh

lol, nice.

N3buchadnezzar

My secret is that I do not understand stack based languages

caird coinheringaahing

You can change the matrix and the power to try and get square roots, that just looks to be the shortest

Aaron Miller

@hyper-neutrino Too late, I'm gonna pass that one on :p

Redwolf Programs

20:56

@N3buchadnezzar Good luck with tacit then :p

N3buchadnezzar

shhhh

Redwolf Programs

Stack based is super simple though, if you find it tough you're probably overcomplicating it :p

Unrelated String

stack paradigm is easy even if individual stack languages aren't always

N3buchadnezzar

sshhhhhhhh

Unrelated String

tbh whenever i'm looking at documentation for a stack language's builtins i can never keep straight what order the parameters are taken in

Redwolf Programs

21:05

Ooh, I just stumbled across a feature on MDN that was just implemented in the latest chrome version

Time to use it to yell at people with out-of-date versions :p

hyper-neutrino

i can never remember if it makes more sense for TOS to be left arg or right

Redwolf Programs

Terms of service?

N3buchadnezzar

The Oldest Son?

hyper-neutrino

(can't tell if y'all're joking but if not - top of stack)

Redwolf Programs

Oh :|

N3buchadnezzar

21:07

I was close

Redwolf Programs

(I was joking that it was terms of service, but I didn't know what it meant :p)

hyper-neutrino

lol :p

i should just stop saying TOS. it seems like every time i use it someone doesn't know what it means so i end up spending more bytes to explain it than i would've saved :p

N3buchadnezzar

@hyper-neutrino You should add that to the top of the stack of your TODO list

Redwolf Programs

Not sure if 4 2 - should be 4 - 2 or 2 - 4

They both sort of make sense I guess

Unrelated String

i want to say that when you're stating arguments left being top makes more sense because you can think of it as, like, pop a then pop b then push a+b or what have you
but if you're writing out the stack itself then obviously top is right, because that would be the order in which the items were pushed

N3buchadnezzar

21:11

Following reverse polish notation it should be 4 - 2

New Posts

0

Q: Shortest code to take the longest to run

Write a program (in any language) that takes a really long time to run. wait or sleep blocks designed to take a specific amount of time to run are not permitted. Answers must be as follows: # language, bytes, time (secs) ## code ### machine running the code and other notes.

code-golf

N3buchadnezzar

@NewPosts Uh oh... This needs to be severely clearified

Heya Lynn =)

hyper-neutrino

just take the factorial of like 3 million in python lmao

N3buchadnezzar

@hyper-neutrino Or try to do anything in Python. <- Joke about Python being slow

hyper-neutrino

just do like 9!9¡9¡9¡9¡9¡9¡ in jelly and now this takes a few orders of magnitude longer than the lifespan of the universe to run

Redwolf Programs

21:18

An answer chaining challenge where each answer has to take longer than the previous one with a limited growth in size could be cool

hyper-neutrino

@N3buchadnezzar ಠ_ಠ

N3buchadnezzar

@hyper-neutrino Fibonacci takes a really long time to run done recursively

hyper-neutrino

fibonacci grows exponentially i think

factorial is faster isn't it? (as in, grows faster)

in any case, OP hasn't specified why while 1:0 isn't allowed

N3buchadnezzar

Nah, a bad implementation of Fibonacci grows as O(n!)

hyper-neutrino

ah

rak1507

21:26

@N3buchadnezzar isn't it 2^n?

N3buchadnezzar

Ackermanns is even worse, but we already had one of those

rak1507

2 branches for every n, 2^n

N3buchadnezzar

@rak1507 O(2^n) yes, sorry

hyper-neutrino

ah. so exponentially :p (i think?)

N3buchadnezzar

Yes

Redwolf Programs

21:30

No way

I managed to inject code into a running Text instance

I can change the styling, at least temporarily!

N3buchadnezzar

@RedwolfPrograms Wait we talked about this earlier

Redwolf Programs

N3buchadnezzar

Did we not mention css-tricks.com/… this in chat? scratches head

Redwolf Programs

Unfortunately I don't think I can permanently impact the code, so it'll be a bit annoying, but I can now write a custom theme

I just have to do a few minutes of work manually to set it up

Honestly 100% fricking worth it

And if I like it enough, I might be able to download the compiled extension directly, instead of building it myself, then apply the changes there and install it normally

I've fixed the main issue I have with Text now. This is probably one of the best days of my life lol.

N3buchadnezzar

Really like this video youtube.com/watch?v=seVSlKazsNk. Have much more appreciation for Haskel now

user

21:48

@hyper-neutrino None of us are joking, joking isn't here

:P

Redwolf Programs

Text's default dark theme is truly something

hyper-neutrino

ha, I see what you did there, that was very clever and original

Redwolf Programs

Never have I seen such a horrible mix of colors

I just love the vomit green mixed with the very unnatural orange, it makes my JS look as bad as it should

N3buchadnezzar

Looks just like Molokai / Monokai

Redwolf Programs

I think I'm just going to steal Github's dark theme and port it over to work with Text/CM lol

N3buchadnezzar

22:12

CMC take in a list (of not necessarily numbers and assert whether all elements are equal. One byte solutions / builtins that are written explicitly for doing this is banned :p

Unrelated String

i feel like there's probably a jelly 2 byter but i can only think of several 3 byters

Redwolf Programs

Four bytes in Ash is all I can come up with :/

hyper-neutrino

QḊ if we can return a truthy/falsy value inverted

Unrelated String

oh yeah if course

i was thinking of something with Q but i completely failed to think of how to compare its length to 1

mu two other three byters were ṙƑ1 and Ṗ⁼Ḋ

Redwolf Programs

Thought of an Ash two byter, something like Ṙz

(Check if length of unique items is one)

N3buchadnezzar

22:23

@hyper-neutrino I dont know why but this APL presentation is helping me a lot understanding Jelly better youtube.com/watch?v=seVSlKazsNk

Redwolf Programs

Well because Jelly is tacit like APL :p

Unrelated String

...debatable how much like

but conceptually similar yeah

Redwolf Programs

"(Jelly is tacit) like APL" not "Jelly is (tacit like APL)"

user

@N3buchadnezzar Scala: _.toSet.size<2

Unrelated String

jelly's fixed adicity probably came up as sort of a hybrid of trains and whatever the non-train syntax is called come to think of it

Redwolf Programs

22:25

@N3buchadnezzar x=>new Set(x).size<2, or x=>x.some(n=>n!=x[0]) (reversed T/F)

Unrelated String

oh yeah another fun jelly 3 byter is ḷ\Ƒ

user

@RedwolfPrograms Heh Scala good JS bad /s

Redwolf Programs

@RedwolfPrograms For numbers only, - instead of != saves a byte

N3buchadnezzar

@RedwolfPrograms Please watch it when you have time =)

Leaky Nun

@N3buchadnezzar Python, 20 bytes: lambda a:len({*a})<2

N3buchadnezzar

22:31

@LeakyNun I think I got 19 with a==a[::-1]

Leaky Nun

fails for [1,2,3,2,1]

N3buchadnezzar

Noooooo

Unrelated String

that is literally just a palindrome check

Leaky Nun

CMC: Output n! (factorial) with all trailing zeroes removed, so 7 -> 504 and 10 -> 36288

user

Scala: 1.to(_).product+""replaceAll("0+$","")

Unrelated String

22:41

obligatory Brachylog, 3 bytes: ḟ↔↔

user

I assume the f is factorial, but what's ↔?

Unrelated String

reverse

user

Ooh, that's smart

N3buchadnezzar

@LeakyNun I got 71 64 in Pyhon =/

Unrelated String

so far the best i can think of for jelly is the very straightforward 5 byter with the one dyad i usually forget exists

N3buchadnezzar

22:49

57 Could golf this 1 byte switching to python 2

Leaky Nun

@N3buchadnezzar 55

user

52: f=lambda n,a=1:f(n-1,a*n)if n else str(a).strip('0')

N3buchadnezzar

@user Clever!

Leaky Nun

@user 51

N3buchadnezzar

I think it is funny this is a struggle in Python because it is so expensive importing the factorial function bitwise :p

Jelly be like, what is this guys problem

Unrelated String

22:53

[here's a funny 7 byter in jelly](tio.run/##y0rNyan8/9/K9PD0R41brRwU////bw4A

i cannot type a right parenthesis to save my life holy fuck

N3buchadnezzar

@UnrelatedString I cant read this

Unrelated String

floor-div by 5, multiply by 10, floor-div factorial by that

Leaky Nun

@UnrelatedString gives 181440 for 10 instead of 36288

Unrelated String

...

and it doesn't work

yep

i literally thought to try that as you pinged me

hyper-neutrino

cursed idea: a fixed-arity tacit lang where there are prefix and postfix monads and chaining structure depends on which way monads face

@LeakyNun Jelly, 6 bytes: !DUḌƊ⁺

Unrelated String

22:56

because it multiplies instead of exponentiating lmao

there we go

N3buchadnezzar

@hyper-neutrino Not enough D's

Unrelated String

@hyper-neutrino i got halfway through writing that when i remembered t exists

hyper-neutrino

oh i forgot about that :p

then !Dt0Ḍ :p

Unrelated String

it is a very forgettable atom

Leaky Nun

@UnrelatedString outputs 155112100433309859840 for 25 instead of 15511210043330985984

Unrelated String

22:58

welp

looks like it manages to get two trailing zeros by 50

...

that is obvious in retrospect

whoops

counted multiples of 5 to count total factors of 5

Redwolf Programs

stackoverflow.com/a/27631052/8037731 is probably the worst answer I've stumbled across on SO lol

hyper-neutrino

wtf

Redwolf Programs

And the worst part is it has three times more votes than the real answer

Unrelated String

there's probably some way to do this with base conversion

uh

Leaky Nun

CMC: Given a positive integer n, output the n-by-n matrix formed by filling in 1...n^2 in ascending order. e.g. 3 -> [[1,2,3],[4,5,6],[7,8,9]]

hyper-neutrino

23:14

@LeakyNun easy 2-byter in Jelly lol

(spoiler in case anyone new to jelly wants to give it a shot)

user

@LeakyNun Scala: n=>1 to n*n grouped n

N3buchadnezzar

56 Cant really be bothered golfing it

user

I parsed HTML with regex and this is what happened

Unrelated String

so far

Redwolf Programs

No way, I can actually Text look nice by changing the CSS

Unrelated String

23:27

~~i'm not sure i can text look to begin with~~

Redwolf Programs

My brain is much from trying to understand Text's HTML layout lol

* mush

lyxal

@Ausername yes

That shall be added later today

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