The Nineteenth Byte

12:00 AM

Welcome to the eleventh Learn You A Lang for Great Good! Today, we'll be learning Vyxal, a golfing language that aims to be both short and readable. During the day, Vyxal Bot will be active to assist people learning Vyxal, see the pin below for information about how to use it. During the event, feel free to post CMCs to practice Vyxal, ask questions about the language and so on.

12

Niko

pog

i was about to say in 1 sec

Bgil Midol

CMC: Output [1,1,2,2,2,3,3,3,3,4,4,4,4,4...n,n,...]

caird coinheringaahing

Is there supposed to be only 2 1s but 3 of everything else?

lyxal

I'm not quite sure what the pattern is supposed to be either

but on a completely different note, we've got roughly 47 CMCs for y'all to do over the next day lol

caird coinheringaahing

wow

that's one every half hour

lyxal

12:03 AM

I was busy last night lol

emanresu A

We're using this as a prime marketing oppurtunity /s

VMC: Given a string, determine if it contains entire lowercase letters

caird coinheringaahing

@emanresuA Is it your 2nd, 3rd, 5th or 7th marketing opportunity?

lyxal

@BgilMidol I've got 7 bytes

!!/run ɾƛ›$ẋ;f _ 5

Vyxal Bot

@lyxal ⟨ 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 ⟩

Bgil Midol

nice

lyxal

12:06 AM

Before I start pouring out the CMC tank, does anyone want a short introduction/recap on the basics of Vyxal?

Niko

how to unlist a list

i forgot

lyxal

@Niko you probably want ÷

!!/run ⟨4|3|7|4|1⟩÷

Vyxal Bot

@lyxal 1

Bgil Midol

CMC: Output 2&3&4&5&6&7&8&9&:&;&<&=&>&?&@&A&B&C&D&E&F&G&H&I&J&K&L&M&N&O&P&Q&R&S&T&U&V&W&X&Y&Z&[&\&]&^&_&&a&b&c&d`

lyxal

@lyxal well if anyone wants a tutorial/explanation of anything, just ask me

Bgil Midol

12:09 AM

@BgilMidol (generated with print("&".join(map(chr, range(50,100+1)))))

emanresu A

@lyxal Or me

Bgil Midol

@emanresuA Or me

Niko

Þ∞÷ƛ:›(:)

emanresu A

... that won't work

lyxal

@BgilMidol 9 bytes:

!!/run ₁:½$ṡC\&j

Niko

12:11 AM

yes

emanresu A

Þ∞÷ fails completely

Vyxal Bot

@lyxal 2&3&4&5&6&7&8&9&:&;&<&=&>&?&@&A&B&C&D&E&F&G&H&I&J&K&L&M&N&O&P&Q&R&S&T&U&V&W&X&Y&Z&[&\&]&^&_&`&a&b&c&d

Niko

it timed out

sad for me

emanresu A

Because you're appending an infinite list to the stack

lyxal

^

emanresu A

12:11 AM

So whatever happens is undefined

lyxal

And further, you're then mapping over an infinite range

Aaroneous Miller

@lyxal how does vyxal?

emanresu A

!!/run Þ∞ƛ:›(:)W - 5

Niko

theoretically it should work(if it will ever output lol)

lyxal

@AaroneousMiller get keyboard and mash

Vyxal Bot

12:12 AM

[@emanresuA: 60188502]
⟨ ⟨ 1 | 1 | 1 ⟩ | ⟨ 2 | 2 | 2 | 2 ⟩ | ⟨ 3 | 3 | 3 | 3 | 3 ⟩ | ⟨ 4 | 4 | 4 | 4 | 4 | 4 ⟩ | ⟨ 5 | 5 | 5 | 5 | 5 | 5 | 5 ⟩ | ⟨ 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 ⟩ | ⟨ 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 ⟩ | ⟨ 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 ⟩ | ⟨ 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 ⟩ | ⟨ 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 ⟩ | ⟨ 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 ⟩ | ⟨ 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 ⟩ | ⟨ 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 ⟩ …

caird coinheringaahing

@lyxal vtc Vyxal as dupe of Perl :P

Aaroneous Miller

@lyxal instructions unclear, i jellyed instead

Bgil Midol

CMC: Calculate if a string has both leading zeros and trailing zeros

caird coinheringaahing

Oh, and if we can keep outputs from the bot short if possible, that'd be great :)

lyxal

@cairdcoinheringaahing can't believe I just got dupe hammered on a language

@AaroneousMiller rotate the keyboard upside down and try again

Aaroneous Miller

12:14 AM

ah, much thank

emanresu A

But caird doesn't have gold vyxal!

caird coinheringaahing

Not yet :P

emanresu A

ovs and lyxal are the closest

lyxal

VyMC: Return the nth fibonacci number without using ∆f or ÞF

for this, you'll be wanting to either use a for/while loop or Ḟ and a lambda

caird coinheringaahing

Does Vyxal have recursive lambdas?

emanresu A

12:16 AM

Yes

lyxal

x calls the current lambda/function

emanresu A

Please use the 5 flag for anything infinite as the Vyxal interpreter is single threaded.

lyxal

^

Bgil Midol

CMC: Output ⟨ ⟨ 0 ⟩ ⟩ with exactly seven bytes

emanresu A

@BgilMidol ww#####

Aaroneous Miller

12:17 AM

ninja’d

Bgil Midol

@emanresuA I have powowow

rainbow also works

lyxal

@lyxal on the topic of lambdas, I think I'll give a little explanation of how they work.

First, the syntax for a lambda is λ...

the arity of the lambda can be modified by including a number and a pipe after the λ

Bgil Midol

λ<optional arity>|<body>;

lyxal

exactly.

lambdas push themselves to the stack

as if they were any old item on the stack

almost like writing stack.append(lambda args: body)

you can call a lambda on the stack using †

this is like writing stack.pop()(args)

you can do other cool things with lambdas. Look for elements with fun overloads

Bgil Midol

!!/info

emanresu A

12:22 AM

@lyxal I have 6 bytes for both versions

Vyxal Bot

Bgil Midol

Oh the list of elements page looks new

lyxal

@BgilMidol it's magically autogenerated from a massive YAML file

@emanresuA is the md5 of the generator version 606437e2987305c6e1916db44a7007a4?

Bgil Midol

Where did the old one go?

lyxal

@BgilMidol it was overwritten

Bgil Midol

12:24 AM

I prefer the old one

lyxal

@lyxal speaking of type overloads, I might quickly address that

unlike languages like 05AB1E and Jelly where all built-ins do only one thing, Vyxal elements can do multiple things depending on what types they're given

The types that exist within Vyxal are number, string, list and function

which are abbreviated num, str, lst and fun respectively

emanresu A

@lyxal No, it's 89317d79b8a25c3600e353414899c2ef

Niko

can’t turn str into num

sad

lyxal

@Niko ⌊ got you covered

emanresu A

And the iteration based one is f51b5f22847c0448e300d52ff88e7c80

lyxal

12:27 AM

!!/run `69000` 1+

Niko

:D

Vyxal Bot

@lyxal 690001

Niko

pog

lyxal

!!/run `69000` ⌊1+

Vyxal Bot

@lyxal 69001

lyxal

12:28 AM

as you can see, the first performs concatenation because it has str, num as its types

the second performs addition because it has num, num as its types

@emanresuA w...how?

emanresu A

The answer is in your email

lyxal

VyMC: Return the factorial of the input without using ¡ or Π

emanresu A

Hint: ƒ

user

Make a range to input, then reduce with *?

lyxal

@emanresuA speaking of ƒ, this is a perfect opportunity to introduce the topic of modifiers

caird coinheringaahing

12:36 AM

Nah, find the first positive integer divisible by all of 2, 3, ..., n :P

lyxal

Modifiers are like quicks in Jelly except prefix

caird coinheringaahing

@cairdcoinheringaahing (yes, I know this doesn't work)

emanresu A

They can stack

For example, v is a modifier that vectorises whatever comes afterwards

user

I got this but it doesn't work for 0 afaict

lyxal

The current list of modifiers is ß&v~₌₍⁽‡≬

user

12:38 AM

Let's just pretend 0 doesn't exist

emanresu A

The function stuff ⁽‡≬ group the next 1 / 2 / 3 elements into one when in modifiers

Niko

@BgilMidol ₍ht0=∑2=

too long too sad

lyxal

@user Try it Online! for 4 bytes and 0 support

Niko

gonna go prep for test

emanresu A

Bye

Niko

12:39 AM

o/

user

@cairdcoinheringaahing I'm sure it could work with some modifications (turning 2, 3, ... into a multiset of their prime factors, then checking the prime factors of all numbers?

emanresu A

!!/run v‡4+ - [1, 2, 3, 4, 5]

Vyxal Bot

@emanresuA ⟨ 5 | 6 | 7 | 8 | 9 ⟩

user

@Niko i should do that too

lyxal

@lyxal ₌₍ are both "parallel application" modifiers

caird coinheringaahing

12:40 AM

@user Yeah, get the prime factors of 2 through n, get the prime factors of each number, find the first integer that matches

emanresu A

v    # Map the next element over the input
 ‡   # The next two elements as a single one
  4+ # Add 4

lyxal

@lyxal that means that they take the next two elements (which can be single built-ins, structures, other combinations of modifiers) and apply them to the same stack, merging the results

e.g.

!!/run 3 4 ₍+-

Vyxal Bot

@lyxal ⟨ 7 | -1 ⟩

lyxal

It does 3 4 + first then 3 4 -

emanresu A

@emanresuA they're like Jelly's binding quicks except they don't specify arity

lyxal

12:42 AM

₌ leaves the results on the stack and ₍ places the results into a list

@emanresuA and if you want to specify arity, you can multiply them by the desired arity

Neil

@pxeger well, I repcapped yesterday, which is unusual

lyxal

!!/run 3 6 ⁽+†

Vyxal Bot

@lyxal 12

lyxal

!!/run 3 6 ⁽+2*†

Neil

now up to 1<<6 repcaps!

Vyxal Bot

12:43 AM

@lyxal 9

lyxal

!!/run 1 6↲

Vyxal Bot

@lyxal 64

lyxal

that's 1 << 6 lol

emanresu A

I've repcapped 19 times :P

lyxal

@VyxalBot as you can see, the arity of the single-element lambda was modified to be 2

because it takes two items instead of one

Aaroneous Miller

12:46 AM

@emanresuA you mean like this? :P

emanresu A

Uh... no

lyxal

@AaroneousMiller eh close enough

Aaroneous Miller

@emanresuA but it uses ƒ tho

emanresu A

Clever but not what I meant

Aaroneous Miller

lol

lyxal

12:50 AM

I was more thinking something like 1ṡƒλ2|⅛‹(¼:⅛)!(+);

but yours is closer ;p

fun fact: 1ṡƒ‡1[⅛‹(¼:⅛)!(+)] also works

because structures are considered as an element to modifiers

Aaroneous Miller

@lyxal shouldn’t that return 1 tho?

It returns 0

lyxal

@AaroneousMiller wdym?

it's a factorial implementation

Aaroneous Miller

But factorial(0) is 1

lyxal

it returns 1 for 0

!!/run 1ṡƒ‡1[⅛‹(¼:⅛)!(+)] - 0

Vyxal Bot

@lyxal 1

Fmbalbuena

12:54 AM

@lyxal Hey

lyxal

@Fmbalbuena howdy

Fmbalbuena

sorry

!!/help

Vyxal Bot

@Fmbalbuena !!/run `code` `flags (- to exclude)` `input line` `input line` ...

Fmbalbuena

!!/info

Vyxal Bot

Fmbalbuena

12:54 AM

!!/random

Aaroneous Miller

@lyxal That’s not the message I replied to, I was replying to the 4 byter

Bgil Midol

@GingerIndustries hi!

Fmbalbuena

!!/i am privileged

lyxal

@AaroneousMiller huh, so it does.

Aaroneous Miller

Here’s a valid 4 byter w/ a flag: Try it Online!

lyxal

12:56 AM

Ready for the next VyMC?

Fmbalbuena

VyMC: print "Hello, World!"

lyxal

!!/run kH

Vyxal Bot

@lyxal Hello, World!

lyxal

ez

Fmbalbuena

@lyxal already there is, but you should do this in 1 byte

lyxal

12:57 AM

there is no one byte way to do it

Fmbalbuena

if you don't know then you are Noob

lyxal

in Vyxal, 2 hours ago, by lyxal

Guess I'm just bad at vyxal

Fmbalbuena

@GingerIndustries sorry, esolangs.org/wiki/Vyxaaaallalllalalallala

this has blanked

lyxal

VyMC: Return whether an input is a prime number without using any of †æpṗṖǎǏǐ

Fmbalbuena

@AaroneousMiller wait

Transcript for