The Nineteenth Byte

pxeger

08:00

@hyper-neutrino I must say I notice an unusual vote distribution between Vyxal-related nominations vs all other nominations...

emanresu A

in Vyxal, 1 hour ago, by lyxal

in The Nineteenth Byte, 11 mins ago, by hyper-neutrino

Voting for the Best of CGCC 2021 is now open! Go cast your votes there - you can vote via the comments where I've added one under each category for each nomination.

We have an army on our side

(shh it’s “community blah blah blah” not voting fraud)

pxeger

I am going to launch an anti-Vyxal voting campaign against any answers with flags

Unrelated String

brachylog is actually an easy golflang to learn because it has simple left-to-right evaluation, a relatively small number of builtins, promotes direct use of conditionals, and supports long variable names ;)

emanresu A

in Vyxal, Dec 20 '21 at 3:16, by lyxal

gamers I've been flag downvoted:

It’s not voting fraud, it’s systemic quality rating correction

Also I forgot I don’t have GRT on mobile

PyGamer0

in flax, 1 min ago, by PyGamer0

Here is why you should learn flax ..... err .... because its Jelly and a WIP and ..... may have better documentation in the future ...... and ..... it has a shorter name (totally implying more golfiness) .... and it is actively developed!

there are literally no reasons as to why people should use flax over jelly

emanresu A

08:11

Create reasons

PyGamer0

~~oh wait flax has comments, jelly doesnt~~

emanresu A

Jelly’s old and unmantained

PyGamer0

although i am planning on a website (gh paages powered) for flax

emanresu A

How? Isn’t it python?

PyGamer0

nah the website will be for docs and tutorials

emanresu A

08:13

Hm ok

PyGamer0

and for searching the atoms / quicks easily

Unrelated String

@emanresuA some of the stuff in interpreter.py goes a bit further than that

emanresu A

Wdym?

Unrelated String

98% of the language is in that one file, with function definitions in alphabetical order, parsing is done mostly with regexes at the bottom of the file, some other bits of code are just really thick

PyGamer0

github.com/PyGamer0/flax/blob/main/flax/interpreter.py

flax just has the parsin and lexin separate

Unrelated String

08:15

i se

e

emanresu A

True. Does make it easier to run though, and it’s got perfect code quality according to litmus

*lgtm

PyGamer0

the entire parser was made by @lyxal

@emanresuA lmao

Unrelated String

took me two seconds not to read that as language of the month

PyGamer0

lol

emanresu A

@PyGamer0 meanwhile, Vyxal is a 6 on the pH scale.

If you got the joke you’re a true chemistry nerd

PyGamer0

08:21

lmao

@emanresuA i got 25/40 in chemistry though

but 40/40 in maths :D

Bubbler

0

A: Tag proposal: [self-scoring]

Let's make both self-scoring and self-validating self-scoring as a scoring criterion tag The description of self-scoring as proposed is IMO well-defined enough to be a scoring criterion tag on its own, and I agree that there is a good potential for more interesting challenges of this type. As a r...

DialFrost

@PyGamer0 how cld u

chem is fun

Bubbler

The Q was voted high but got no answers, so I tried to write one

emanresu A

You have my +1

Bubbler

Thanks

Unrelated String

08:25

and my +1

PyGamer0

@DialFrost what

DialFrost

chemistry is fun pygamer

Unrelated String

c[ou]ld

DialFrost

although stoichiometry is actually not that hard

PyGamer0

@UnrelatedString Oh you

@DialFrost ok?

DialFrost

08:29

:)

StackMeterPlus

I am only 2 upvotes away from 1k rep

let's go

DialFrost

nice

PyGamer0

hey look its StackMeter

StackMeterPlus

also i have an idea for a very hard question

PyGamer0

Physics: The fun one, Chemistry: The dangerous one, Biology: The weird one

DialFrost

08:34

haha

i'd prefer:

Physics: the boring one, Chesmistry: the fun and awesome one, Bio: the weird one

StackMeterPlus

@PyGamer0 the question I am going to post in the sandbox is in fact related to one of them

PyGamer0

@DialFrost but .. but physics is fun

@StackMeterPlus which one?

DialFrost

physics boring sry mate

emanresu A

@PyGamer0 Agreed

StackMeterPlus

@PyGamer0 guess

emanresu A

08:38

Practical chemistry is interesting, theoretical chemistry is boring

But physics is good either way

DialFrost

but...

Bubbler

Another chemistry gang here

DialFrost

theoretical chem being???

haha

StackMeterPlus

@Bubbler I am also in the chem gang

PyGamer0

im in computer gang

DialFrost

08:40

i like both pratical and theortical chem

emanresu A

Everything’s just applied maths

7

PyGamer0

or im in the axe gang, ill chop you down with my axe

DialFrost

lmao

PyGamer0

@emanresuA including axes?

Bubbler

I'll chop you down with my X and Y-axes

4

PyGamer0

08:42

oh no

but i have X,Y,Z axes muhahaha

and dont forget my Time axes

DialFrost

how do u get a positive qns record?

PyGamer0

@DialFrost get upvotes

dont get downvotes

and be happy

DialFrost

but.. i did!

and i still cant the badge "curious"

PyGamer0

did you ask it on 5 separate days?

StackMeterPlus

you fool
I have all THREE AXES

DialFrost

08:47

ye

it says 5/5

PyGamer0

@StackMeterPlus i have all 10

DialFrost

but no positive qns record

StackMeterPlus

x, y AND z

@PyGamer0 you're too powerful now

PyGamer0

@StackMeterPlus dont worry im about to get another 16

DialFrost

does bounty cross over the daily rep ?

like if u awarded 500

PyGamer0

08:53

now i have 26 axes, ⎕A

@DialFrost i don't think it does

DialFrost

so if ur awarded 500 u waste 300?

StackMeterPlus

@DialFrost no

DialFrost

oh ic

StackMeterPlus

bounties are outside the daily rep cap

emanresu A

CMC: Distact lycanthropy long enough for me to steal his fridge

*lyxal

PyGamer0

08:55

I declare that when I, PyGamer0, get 1k Reputation, I shall bounty all of it to others /s

DialFrost

wut

emanresu A

That has to be one of the best autocorrects

DialFrost

haha

PyGamer0

lol

@DialFrost ill bounty all my rep /s

DialFrost

wo

wow

ur insane lol

StackMeterPlus

08:56

@PyGamer0 could i get precisely 20 of it

PyGamer0

ill bounty all my rep /s

@StackMeterPlus no.

DialFrost

haha

StackMeterPlus

i'm within inches of 1k

DialFrost

create another qns lor

StackMeterPlus

@PyGamer0 r u certain i cannot get exactly 20 of ur rep

PyGamer0

08:57

@StackMeterPlus well ur already at 1k

StackMeterPlus

YES
I DID IT

TYSM

DialFrost

haha

PyGamer0

@StackMeterPlus why me i didnt do anything

DialFrost

i got the exact same achievement yst

PyGamer0

i just watched the rep count go up

DialFrost

08:58

haha

PyGamer0

and i am still here with 844 rep D:

@DialFrost /s means sarcastically

lmao

DialFrost

lol

PyGamer0

how to have 1 rep: delete your account

How To eat a dinosaur: 1. Cook the dinosaur, 2. ???? 3. Eat it.

i just realized something

What online chatting really is: Talking and listening to a bunch of named pictures.

StackMeterPlus

o

emanresu A

09:46

@PyGamer0 How to make bear stew: Step 1: capture a large bear

DialFrost

10:07

can anyone check my two posts in the sandbox

thx

StackMeterPlus

@DialFrost sure

Both of them look good, but i'd allow a string representation of the output for your "Bracket Depth" challenge

DialFrost

i did wat

"output it in the form of a list/array/string representation"

if anyone else has feedback pls say thx

i want to try to post 1 of them tdy

else tmr

StackMeterPlus

@DialFrost oops

Adám

10:39

CMP: What should we call the new apl.chat event where we solve at one easy competition problem every Friday?

DialFrost

10:50

theres a problem every friday???

Adám

Yes, we're planning on running this event starting today and continuing for 100 weeks.

DialFrost

wowwwww

wr can i find the problem tho

issit on this website or on another

Adám

Here is the first one, then we'll continue in order.

DialFrost

thx

StackMeterPlus

11:12

@Adám I would say "an APL a day" if it were daily

sadly not

Adám

An APL a Friday

Sandbox Posts

0

A: Sandbox for Proposed Challenges

Cubax Folding Your task is to solve a new puzzle called Cubax. This toy is actually a Chinese puzzle whose expected “final” state is a simple cube. During the festivities, Cubax unfolded, because it cannot move when folded. Cubax is composed of N³ smaller cubes (elements) linked together in a kin...

DialFrost

does crediting another website for the challenge affect the way the public views it

StackMeterPlus

i have an idea for a challenge

DialFrost

?

StackMeterPlus

11:16

predict the next digit of pi, given all the preceding ones

DialFrost

err wat does tat mean "predict the next digit"

wats the input

StackMeterPlus

the input is a list, containing the digits of pi up to a certain threshold

DialFrost

ah ic

might be duped

idk

StackMeterPlus

i'll check

ThisFieldIsRequired

12:07

Does anybody have any feedback for:

0

A: Sandbox for Proposed Challenges

Is it an action? abstract-algebra decision-problem code-golf Today, you will solve an abstract algebra challenge. Consider a set \$G\$, which, to simplify things, is a finite subset of \$\mathbb{Z}\$ containing \$0\$. It has a binary operation \$*\$, which for our example will be \$+\$, but your...

StackMeterPlus

12:28

I don't think I can be beat in Python 3 with this answer: codegolf.stackexchange.com/a/242352/100887

Ginger Industries

ヾ(•ω•`)o

PyGamer0

@GingerIndustries 🪓-(©_®🪓-)

4 hours ago, by Bubbler

I'll chop you down with my X and Y-axes

Codidact Posts

New Posts - Challenges - Code Golf: Keyword golfing

posted on February 04, 2022 by Lundin‭

Many programming languages have the concept of keywords, special syntax items that are not just identifiers reserved by some library, but words reserved by the language itself. ...

Ginger Industries

@PyGamer0 (⊙x⊙;)

@CodidactPosts this is pretty cool

PyGamer0

13:23

wow

Ginger Industries

damn what kinda supercomputer they runnin over at ATO

PyGamer0

4 approaches, the recursive one is the fastest

the list comprehension one is the second fastest

the builtin high order functions are third fastest

and imperative one is the slowest

Ginger Industries

alright I've found me a stupid issue w/ PXLCODE

it seems that function calls execute in the same context as the function itself

so for all intents and purposes, the function call is essentially inside the function it's calling

this means you can't access nonlocal variables from within a function call instruction, even though it's not visually within the function itself

conclusion: (╯°□°）╯︵ ┻━┻

update: I may have fixed it

Razetime

@PyGamer0 try much bigger numbers

and more different cases.

functools.cache may also change the results by a lot

Ginger Industries

I have successfully made the EXP function cause the interpreter to hang

which is not what I want

figured it out, apparently my POW function dislikes floats

PyGamer0

13:32

@Razetime example test cases?

Razetime

just use random man

mathcat

@GingerIndustries that's what it should do

EXiT Program

Ginger Industries

@mathcat ಠ_ಠ

problem: I need to figure out how to implement trigonometry with just +-*/ and basic logic control

mathcat

@GingerIndustries good luck

DialFrost

hi guys

anyone willing to comment/upvote/downvote/reject my sandbox posts?

thx

mathcat

13:37

@GingerIndustries but doesn't python have a built-in sin function?

Ginger Industries

@mathcat I'd say that python did it but they didn't, they're just using the C standard library

@mathcat it does, but I want to implement this in PXLCODE itself

mathcat

I remember seeing an infinite formula for sin somewhere

Razetime

taylor series?

mathcat

this looks promising

@Razetime ninja'd

Ginger Industries

this is one of the most satisfying things I have ever seen

mathcat

13:39

oh, i've seen that one

@GingerIndustries do you really don't want to implement expon and factorial before trigonometry?

@GingerIndustries Probably uses flOor Well

you know ... the function floor ... that only outputs whole numbers ... never mind

Ginger Industries

@mathcat I have implemented the POW and EXP functions, working on factorial, floor is ez

DialFrost

anyone?

null

14:12

Cutie Mark Crusaders: Input a permutation, output the count of its cycle.

Ginger Industries

???

ThisFieldIsRequired

14:23

@null Did you get that from my latest answer?

Ginger Industries

I have decied that implementing trig in PXLCODE is too hard, so presenting CAN HAS SNEK?, a way for PXLCODE programs to import Python programs.

StackMeterPlus

14:38

how do i make a table

thejonymyster

@StackMeterPlus i found this video tutorial

StackMeterPlus

i mean when writing a question

mathcat

you take a spoon away from a tablespoon and you're left with a table.

@StackMeterPlus you can use mathjax

one sec

StackMeterPlus

ok

how do i use mathjax

mathcat

$$
\begin{array}
{|r|r|}\hline
1 & 1 & 1 & 0 \
\hline
0 & 1 & 0 & 0 \
\hline
0 & 0 & 20 & 1 \
\hline
1 & 1 & 1 & 1 \
\hline
\end{array}
$$

try this

oh wait no

$$
\begin{array}
{|r|r|}\hline
1 & 1 & 1 & 0 \\
\hline
0 & 1 & 0 & 0 \\
\hline
0 & 0 & 20 & 1 \\
\hline
1 & 1 & 1 & 1 \\
\hline
\end{array}
$$

that works I think

Aaroneous Miller

14:52

@taRadvylfsriksushilani For the ACE CnR, how long must cops be posted before they're safe?

Bgil Midol

@AaroneousMiller what does ACE stand for?

Aaroneous Miller

Arbitrary Code Execution

Referring to this CnR

thejonymyster

15:29

i hope that an interpreter for this gets written, this lang is a work of art

Neil

@lyxal nearly all of my chat has been in this room, although my very first message was over 10 years ago in an unrelated room

Bgil Midol

how to find first message?

Parcly Taxel

9

A: Output a Steiner quadruple system

Python, 85 bytes print({(*sorted((i*3**j+j)%14for i in[1,5,j%5^22,9910>>j%5*4]),)for j in range(210)}) Try it online! Outputs {(0, 1, 4, 5), (6, 8, 11, 12), (1, 7, 9, 11), (2, 3, 12, 13), (2, 4, 9, 11), (0, 6, 7, 13), (4, 5, 11, 12), (4, 8, 10, 12), (8, 9, 10, 11), (2, 6, 9, 13), (1, 2, 5, 7), ...

To be fair, even I don't know how this answer generates my SQS, even though Python is my native lang

ta Radvylf srik su shilani

@AaroneousMiller Umm, I guess a week

Anush

what is a golfed python way of doing bpa.st/IBQQ or in other words this adventofcode.com/2021/day/1

Bgil Midol

15:44

@Anush Try it online!

pxeger

with a more flexible I/O format: ato.pxeger.com/…

Bgil Midol

my attempt with flexible io:

Anush

@BgilMidol I like open("input1").read()

[*map(int,open(0))] maybe?

pxeger

lambda L:sum(L[-i]>L[~i]for i in range(1,len(L)))

Anush

but what does open(0) do?

Bgil Midol

15:48

@BgilMidol lambda n:sum(1for i in n if n[i]<n[i-1])

pxeger

opens STDIN

ta Radvylf srik su shilani

@Anush Opens stdin as a file

Bgil Midol

@BgilMidol (n is a list of nums)

Anush

thanks

Bgil Midol

or just

Anush

15:48

@pxeger part of the annoyance is reading the thing in and converting to ints

Bgil Midol

sorted

Anush

@taRadvylfsriksushilani thanks

Bgil Midol

@Anush then print(sorted(map(int,open(0).readlines().split())))

Anush

@BgilMidol that doesn't output the right thing

Bgil Midol

tio.run/##DcgxCoAwDAXQ3ZMkIkVwcelJxKFgwEJNQ/…

For the voting, can I vote for multiple selections on the same topic?

Anush

15:54

@BgilMidol that's not solving the same problem any more

Bgil Midol

@Anush for the best of 2021

PyGamer0

16:09

@ParclyTaxel so you speak python irl? o_O

@pxeger so open(1) opens STDOUT? and open(2) opens STDERR?

pxeger

yes

although you have to pass ,'w' I think

otherwise it's opened for reading, and you can't read from stdout obviously

Anush

If I write QoSlIj DatIvjaj can everyone here understand it?

PyGamer0

no

Anush

:(

PyGamer0

@pxeger well so i type a random number like open(5738292) it will open the file with the descriptor 5738292 if it exists?

pxeger

16:22

IIRC you can't have more than 1024 file descriptors on linux

but in principle, yes

PyGamer0

python just copied the c's stdio open function?

pxeger

No?

there is no open function in stdio

there is fopen and fdopen, if that's what you mean, though

Anush

@PyGamer0 if you google it it will be clear :)

Parcly Taxel

@PyGamer0 In the sense of "language of choice"

Python drives most of the code I write for other specialised mathematical programming languages. Sometimes it writes the code for me

Anush

alphacode?

ta Radvylf srik su shilani

17:24

Anyone here know a bit of C?

If so, on a scale of 1 to code golf, how cursed is this?

I'm not sure if char c[1] makes sense or if char* would be better.

Also not sure if mixing stdio.h and unistd.h is a good idea or not

(All it does is read up to 256 chars of unbuffered STDIN and print the bytes as ints)

Unrelated String

declaring char *c wouldn't give you any memory behind the (uninitialized) pointer to work with, but i think the third option that would be most idiomatic is just char c

then pass &c to read

but for reading individual characters isn't there... getchar

ta Radvylf srik su shilani

Yeah, but I ran into issues with arbitrary data, since EOF and \xff look the same

Unrelated String

ah

pxeger

Why do you need it unbuffered completely, can't you have a 256-byte buffer with exactly the same effect?

Unrelated String

^

pxeger

17:29

also you could just do dd bs=1

Unrelated String

("exactly the same effect" in the sense of probably more performant but otherwise identical)

ta Radvylf srik su shilani

@pxeger No, if you're outputting one character every 10s for example, I want those to be stdout'd live rather than after half an hour

Unrelated String

@taRadvylfsriksushilani ...getchar returns int

ta Radvylf srik su shilani

oh lol

I was storing it in a char

Unrelated String

pretty sure EOF is distinguishable from \xff so long as you don't cast to char too early yeah

ta Radvylf srik su shilani

17:32

All the ice is melting here

Dunno why they canceled school for today too

Unrelated String

it's been like two weeks since it snowed here and the ice on the sidewalk on one side of a bridge just melted like two days ago

caird coinheringaahing

still hasn't come close to snowing here :/

just cold rain

Unrelated String

f

ta Radvylf srik su shilani

Is there a way to do stuff while waiting for stdin other than multithreading?

pxeger

I was gonna provide a substantiated account of the weather here based on my weather logging dashboard, but

@taRadvylfsriksushilani there are various OS-dependent async I/O interfaces

ta Radvylf srik su shilani

17:39

Your forecast for today is batman

pxeger

looks like a toddler scribbled on the page

I need to check some connections lol

ta Radvylf srik su shilani

The temperature was just a complex number during those parts of the week

6

Ginger Industries

@pxeger according to my analysis you're living in a negative zip code

pxeger

I don't have a zip code

Ginger Industries

@pxeger according to my updated analysis you have broken space and time

ta Radvylf srik su shilani

17:50

@pxeger It's a reference to a really great xkcd

pxeger

oh

Oh, definitely not; they don't have Amazon Prime.

@GingerIndustries by living in the UK?

pxeger

Heh

caird coinheringaahing

18:06

@pxeger Wait, we're allowed to do that here? Why did no one tell me :P

pxeger

No, you're not allowed to live. You just admitted that you aren't a zombie, so I'm calling the police immediately

Did nobody tell you you have to be a zombie?

Fmbalbuena

Jealous (My golfing language) is now Beta!

caird coinheringaahing

@pxeger Ah, so Shaun of the Dead is a documentary, that explains it

Hello, World!

18:28

1

A: "Hello, World!"

Jealous, 14 bytes ᐗHello, World!

Ginger Industries

18:57

I've done it
you can now use Python's `math` module in PXLCODE programs

all you have to do is put CAN HAS SNEK {math}? at the top of your program

DLosc

Lol

Ginger Industries

update: importing socket fails bc it exceeds the maximum recursion depth

:/

when you import a module it generates a .snek file for it

and that takes a while

it's been like 2m i'm scared

good lord how big is socket

it's still goin

._.

5m

jesus christ

segfault :/

caird coinheringaahing

try tkinter :P

pxeger

are you sure it's not in an infinite loop?

Ginger Industries

@cairdcoinheringaahing no

DLosc

19:18

> Distact lycanthropy

I think I've found my new username

emanresu A

@DLosc You get a prize for replying to me just as I got online.

DLosc

\o_
_o/

Ginger Industries

19:38

@pxeger one sec, lemme check

yea it is

it switches between processing __class__ and __base__

ta Radvylf srik su shilani

Okay what are the chances lol...I was googling stuff related to async I/O stuff in Linux, and less than an hour later the cloudflare blog posts about async I/O in Linux

caird coinheringaahing

@taRadvylfsriksushilani clearly you write for cloudflare

pxeger

io_uring sounds like a very well designed feature actually

if only it had been introduced 10 years ago so I wouldn't have to worry about backwards compatibility

Neil

@BgilMidol seems to be here

pxeger

> sockets [...] can be polled for readiness to read

I know "readiness" means "preparedness", but I can't help seeing it as "the property of being 'read'" lol

Ginger Industries

19:45

okay I fixed

what else shall I try generating a snekfile for

AShelly

Hi I'm AShelly, you may know me from such classics as Code Troll sorting and Quicksort in Brainfuck. Looking for feedback on codegolf.meta.stackexchange.com/a/24426/152.

Ginger Industries

alright

pxeger

yay, I significantly reduced disk space usage during installation on ATO

more languages here we come

Ginger Industries

heyyy

emanresu A

imagine using disk space

pxeger

19:53

hmm, yes, DSO just uses too much network bandwidth instead

ta Radvylf srik su shilani

Not really...

Most interpreters are going to be tens of kilobytes at most I'd imagine

And they're lazily loaded, so it only loads the ones it needs

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