The Nineteenth Byte

lyxal

00:06

y'aint the only ones who can do it in one byte

Plus mine is 100% ascii which makes it 100% objectively better :p

Redwolf Programmed

Oh nice, a mod froze that room discussing red hair that's been generating a bunch of flags

lyxal

I'm sorry what.

Thomas Ward

lets move on and not dwell on things, okay?

lyxal

Y'all seeing chat flags on desktop while I just silently see nothing on mobile

Redwolf Programmed

@ThomasWard Ah sorry

lyxal

00:11

Like seriously why doesn't SE chat let you see any chat flags on mobile?

Redwolf Programmed

For the same reason it doesn't let you upload images, it's basically half-finished :p

isthisnameinvisibleforyounowpl

SE chat's already poorly supported, and their mobile support is even worse, why would you expect it to handle flags?

lyxal

@isthisnameinvisibleforyounowpl because I want to see the sh*t posting that happens in the math rooms

isthisnameinvisibleforyounowpl

lol, not worth it

Redwolf Programmed

It's less shitposting and more arguments between high-rep users that don't like to be nice to each other, and/or people posting spam

isthisnameinvisibleforyounowpl

00:13

Besides, you can just go there yourself whenever you want to see it

Redwolf Programmed

TBH I'm not how math.se manages to get in so many arguments in chat given that math is like the least subjective subject possible

lyxal

@isthisnameinvisibleforyounowpl but that's the thing - I don't know when it's happening

isthisnameinvisibleforyounowpl

True (to both of you)

lyxal

In other, completely unrelated news, do y'all ever just get notified you have an exam in 2 days, go to check your exam timetable and realise you have an exam the next day?

Meaning that you have to go speedrun studying?

Because that happened 2 days ago to me lol

Also, guys, it's BMG time

And there's only one draft in the drafting room

DLosc

So are we gonna write new CMCs on the spur of the moment? Or maybe recycle the "best of" previous events?

lyxal

00:19

Do y'all want another AI powered BMG?

because I'd be happy to host again

DLosc

I want to come up with some human powered ideas

Bubbler

I have no idea

lyxal

Well regardless of what we're doing

Welcome to the 13th Biweekly Mini Golf. During this event, we'll post some CMCs (Chat Mini Challenges) for you all to solve. A new one will be added every 5 to 10 minutes. Feel free to keep suggesting drafts during the event. If you have any questions, don't be afraid to ask. Good luck!

5

user

in BMG Drafts, 5 mins ago, by DLosc

Draft: Given a printable ASCII character (anything from space through ~), return the next printable ASCII character, wrapping around (! -> ", A -> B, ~ -> space).

lyxal

in BMG Drafts, 6 mins ago, by lyxal

AIDraft: Given a positive integer N, write the function that returns true if there is at least one pair of integers within range 1 to n (both inclusive) whose product equals N+1. Example : 4 => True 5 => False

DLosc

00:31

The example is wrong, right?

Backwards, in fact

lyxal

That's the fun part about AI cmcs

the challenge is interesting, but the examples are usually wrong

Bubbler

It is equivalent to negation of primality of n+1

lyxal

in BMG Drafts, 8 mins ago, by lyxal

AIDraft: Write a function that finds any repeating element in an array of integers.

DLosc

@Bubbler Ah, or also equivalent to "is there any integer between 2 and n that perfectly divides n+1?"

Bubbler

Right

lyxal

00:38

in BMG Drafts, 7 mins ago, by lyxal

AIDraft: Given a string, sort only its capital letters

AICMC: Count the number of times each word occurs in a string (words are any group of non-whitespace characters)

AICMC: Given an array A, find every integer that appears more than ⌊ len(A) /3 ⌋ times in it. If there are multiple solutions, output any one

AICMC: Return index of an odd integer from a list = [2,20,5] -> 2

Bubbler

@lyxal Python: lambda s:Counter(s.split());from itertools import*

@lyxal How did it manage to use floor notation sanely :P

lyxal

@Bubbler I honestly don't know

originally it had N instead of len(A)

AICMC: Given an array, position in the list and another number. Output true if there are values equal to that second -number or greater than 3 times said value within +/- 2 indices of its index

DLosc

@user C (GCC), 21 bytes I think: i(c){c=c>'}'?32:c+1;}

Bubbler

i(c){c=(c-31)%95+32;} has the same byte count

DLosc

Odd how you can leave out the return statement but only if it's an assignment. I'm now used to Pip and Scala where any expression will do.

Bubbler

00:52

Same for Rust

DLosc

@lyxal Wait, does "pair of integers" mean the integers are distinct from each other? If the input is 3, does 2*2=4 make a valid pair, or not?

OldSandboxPosts

Sandbox posts last active a week ago: Implement Unix Timestamp to Daytime, Convert codepoint to UTF-9

lyxal

I'll say that they do have to be distinct

DLosc

Okay, so n+1 must not be a prime number or the square of a prime number.

Ugh, C, why do you vex me so

(It's not the language, really, it's just that my algorithm isn't working)

Okay, never mind, it is the language :P

For some reason ! has higher precedence than %, so !n%i is always 0 for positive n

Bubbler

01:15

Unary operator is always higher precedence than binary in C

The problem is you :P

DLosc

PEBKAC, I get it :P

@lyxal C (GCC), 54 bytes: i,r;p(n){for(r=i=1,++n;++i<n;)r=n%i<1&&n/i>i?2:r;r--;}

@lyxal Pip, 17 bytes: _WVSS B Va^CXUUW2

Same bytes, more readable: {aWVSSb}Va^CXUUW2

Or also {aWVSSb}VUW:a^CXU

user

01:39

There was a language out there (not SOGL where absence pf whitespace implied parentheses

So 4+2 * 8 was different from 4+2*8 or 4 + 2 * 8

@DLosc Only by our rules, you still really beed a return in “real” C

DLosc

@user Of course

user

@lyxal Scala: x=>x.find(x.count(_)>1)

@lyxal Scala: _.indexWhere(_%2>0)

emanresu A

03:08

@lyxal ⌈Ċ, and one of those builtins is definitely useful...

emanresu A

03:30

When you try to get Copilot to draw a triangle:

*
 ***
*****
 *******
*********
 ***********
*************
 ***************
*****************

4

PyGamer0

04:35

@emanresuA quality 10/10 triangle by copilot, get now!

emanresu A

09:00

Lol copilot just wrote a whole function and got it right

lyxal

Ai do be like that sometimes

˙ᓀ˙

3

emanresu A

Is there a codepage variable somewhere?

If so, where can I import it from?

If not, where should I put it?

lyxal

encoding.py

Look in there

emanresu A

Ok

lyxal

And you shall find your answer

emanresu A

09:04

I'll do everything except øD

Hyper can do that

lyxal

Can't it just be copy pasted?

Also have you found that copilot has made the process way quicker?

emanresu A

Yes

lyxal

Excellent

emanresu A

It also leads to some hilarious results

lyxal

I know right

Like the amount of just blatantly incorrect stuff it generates is hilarious

emanresu A

09:09

The amount of correct stuff it generates, though...

lyxal

What's been your favourite incorrect snippet?

@emanresuA it's useful enough to make things way quicker.

emanresu A

I was going to say it's worryingly high.

What does that even mean?

lyxal

Well, I suppose it's vectorised factorial over an implicitly generated range

emanresu A

I guess

Ok I have to try

def factorial_of_range(lhs, ctx):
    """Element øF
    (num, num) -> factorial of range
    (num, str) -> vectorised
    """
    ts = vy_type(lhs)
    return {
        NUMBER_TYPE: lambda: math.factorial(lhs),
        str: lambda: vectorise(factorial_of_range, lhs, ctx=ctx),
    }.get(ts, lambda: vectorise(factorial_of_range, lhs, ctx=ctx))()

Aside from that that's not an element, look at that code for a second.

Or more accurately, look what it's vectorising over.

lyxal

Don't pass it a string...it'll never end ˙ᓀ˙

It doesn't even convert numbers to a range lol

Hence defeating the point of factorial over a range

emanresu A

09:14

The first thing I got it to write: gist.github.com/chunkybanana/70167777be6f6b8c11e591ea1c13e763

lyxal

@emanresuA Also, I find it funny that it says it's dyadic in the docstring but treats it as a monadic element anyway

emanresu A

(I literally just typed // Write a program)

@lyxal That too

lyxal

@emanresuA ah yes, the good old "dont actually give code suggestions just give comments"

A classic

That reminds me of when I've used codex to try and write functions and it just says #TODO: implement

2

Like it has a good portion of github as training data, and that's the best it can come up with

A comment saying that the function I'm asking it to write should be written later

I think we're safe from AI taking over lol

emanresu A

> a good portion of github as training data

What do you think, people are actually going to implement stuff?

lyxal

Well at least we can get away with that

The computer is being specifically tasked to implement a function not create several unrelated stub functions

And then there's the times it generates docstrings and a test unit thing, but the function it generates doesn't actually pass all the tests

That's funny.

emanresu A

09:21

Yes.

It is eerily accurate sometimes

Bubbler

Okay, my company has finally managed to fully screw up my slacking workflow

lyxal

Do explain.

emanresu A

Ah yes, how to center a string:

def center(lhs,ctx):
    """Element øc
    (str) -> center a string
    """
    return ' ' + lhs + ' '

lyxal

@emanresuA well it has centred it more than it was :p

emanresu A

True I guess

Bubbler

09:25

The proxy is now blocking every websocket connection, which is needed to access any free cloud IDE I know of, which means I can no longer code my things and push to github

emanresu A

So if we just put it in a forever loop, it'll asymptotically converge towards centred

@Bubbler :(

Wait, doesn't chat use a websocket?

Bubbler

SE chat seems to fall back to polling I think

emanresu A

Lucky for you

If you ask redwolf nicely, he might let you use the thing he has for internet at school

lyxal

@emanresuA but that could be because the file it's working on has tons of code patterns: function signatures all follow a similar format, they are followed by a docstring which has the pattern of listing overloads and descriptions, that's followed by getting the types of the parameters and then placing some lambdas inside a type dictionary with the same .get method template

Our project is kinda made for copilot to come along and be helpful

emanresu A

@emanresuA Might also be blocked though

@lyxal Yeah

Bubbler

09:29

@emanresuA I doubt it, the company is big and has a proper security team, which has successfully blocked most of my attempts to get around things

emanresu A

@Bubbler Is TIO unblocked?

Bubbler

TIO works, but it's got a lot of hiccups today. Seems fine right now

emanresu A

Does developer tools work?

lyxal

@Bubbler gitpod?

Bubbler

@emanresuA It works fine and properly reports to me that certain things are blocked

@lyxal I think I'm the first one to advertise gitpod here...

emanresu A

09:34

repl.it?

Bubbler

I've used gitpod to work on github projects all the time, but now it's totally not working, hence my frustration

I mean, I can work on my code locally with some effort. I can upload things to github but only with in-page file edits, which is frick

emanresu A

:(

emanresu A

09:51

In Python, how does do call function on regex match?

emanresu A

10:01

@Bubbler Would this help?

Bubbler

No, that's not the right thing, but

I... just found git push from local works just fine

How didn't I try this for four years lol

emanresu A

(ノ°Д°）ノ︵ ┻━┻

Wait, does your job involve coding in any way?

Bubbler

Yes but my current position does so only indirectly

Neil

@user Charcoal, 6 bytes: §γ⊕⌕γＳ

@lyxal Charcoal, 38 bytes: ≔Φ⪪θ¹¬№αιηＷ⌈⁻⪪θ¹η«⊞ηιＦ№θι⊞υι»⭆θ⎇№αι⊟υι

emanresu A

10:23

Help, I typed git pull origin master on instinct and now there's a huge mess

Bubbler

Protip: don't use commands, use vscode

Adám

If that doesn't fix it, git.txt contains the phone number of a friend of mine who understands git. Just wait through a few minutes of 'It's really pretty simple, just think of branches as...' and eventually you'll learn the commands that will fix everything.

emanresu A

I succeeded

Well, partially

I managed to push what I wanted, but my end is fricked up

lyxal

10:39

@emanresuA I don't know what percentage responsible I am for that

also, why'd you change elements.txt?

emanresu A

@lyxal Oops

lyxal

there's literally no point modifying that anymore

emanresu A

I pulled from master by mistake, and I must've thought that was something to keep.

lyxal

lol

I don't really care what happens to element.txt, because the YAML will be used to autogen it later

so I was just curious why you modified the old file when it's just gonna be discarded lol

emanresu A

I didn't :p

emanresu A

10:53

Well, we're getting closer. String digraphs are done, I'll probably do list digraphs next time.

o////

lyxal

user already claimed those

user

11:26

I mean I spend much less time on Vyxal than y’all so it’s totally fine if you implement some of them

lyxal

12:01

Ah yes thank you SE for keeping my meta rep updated

very cool

for reference, I hit 10k around this time last year, meaning that the meta total hasn't updated for at least a year

SE peek performance at its highest as usual

New Posts

12:19

0

Q: Bird's Algorithm for Computing Determinants

There is a division-free algorithm for computing determinants published by R.S.Bird in 2011 that uses only matrix multiplications. Given a n×n matrix X, the matrix Y=μ(X) is another n×n matrix which entries are given by Y[i,j] = 0 , if j<i Y[i,j] = X[i,j], if j>i Y[i,i] = -(X[i+1,i+1]+X[i+2,i...

lyxal

oh hey @NewPosts

very cool of you to be quick as butter

lyxal

12:35

Sep 11 at 5:58, by lyxal

TIL you can't buy actual bees on amazon.com.au

it's with great sadness I have to report that this is still true

one still cannot buy bees on amazon.com.au

this is so sad that I'm going to go sleep

o/

pxeger

\o

Wezl programs redwolf

o/

PyGamer0

@lyxal o/)(!!!;

Mayube

13:15

@lyxal But can you buy ladybugs?

Redwolf Programmed

13:31

@emanresuA Don't know about lhs, but ctx is usually used in JS for canvas drawing lol

pxeger

"left-hand-side" and "context"

Redwolf Programmed

@emanresuA It's...websocket based lol

pxeger

but what relevance those have to factorials idk

Redwolf Programmed

I love how google turns "bees and tires" into "tire shops in bee cave"

Then it gives me results about "bees in tires"

Which is considerably less funny than bees and tires

Oh wait bees are only funny when they're with tires, not and. Never mind.

Well, google doesn't think "bees with tires" means "tire shops in bee cave", but it still thinks I mean "bees in tires".

Google's no fun

Redwolf Programmed

14:07

> Twenty-eight U.S. states have named an official state reptile.

Ours is a lizard

It's horny

DLosc

15:16

@RedwolfProgrammed Horned lizards are cool.

Looking through the list, I was a bit disappointed that so many states chose turtles and tortoises. Seems like there could have been more variety.

Redwolf Programmed

The idea of an official state reptile is kind of funny to me.

Although I know Texas has all sorts of weird state stuff, so I'm sure most states do

pxeger

the idea of an official state {almost any category of object} is kinda ridiculous

I might accept official state dish, animal, maybe flower

Redwolf Programmed

Bluebonnet ftw

pxeger

Scotland's official national animal is the unicorn

DLosc

Nebraska license plates used to show a western meadowlark (the state bird) perching on a goldenrod plant (the state flower). It was a really pretty license plate design.

thejonymyster

16:05

@pxeger official state nightmare

caird coinheringaahing

We've restored a less granular version of the "Last seen". In its original granularity of seconds, "last seen" was a potential vector for abuse. When discussing with our trust & safety team, we determined that knowing someone used the site within a week is plenty of granularity and should satisfy existing use cases. Now public users can see if the user has participated this week, more than a week ago, more than a month ago, and more than x years ago. — Aaron Shekey ♦ 2 hours ago

Redwolf Programmed

\o/

YAY!

caird coinheringaahing

For all y'all complaining about Last Seen, it is now back, in a modified sense

4

Redwolf Programmed

This is exactly what I wanted

A day would've been nicer, but a week works perfectly fine. Hooray!

PyGamer0

fact of fun: 1 + 1 = 1

ok timw for me to slepp o/

maybe >/

Wezl programs redwolf

16:17

@DLosc do terrapins count as turtles? :P

New Posts

0

Q: Fast Matrix Multiplicator Evaluator

Fast Matrix Multiplicator Evaluator A triplet of real tensors (A,B,C) of size \$\gamma \times \gamma \times \sigma\$ represents a matrix multiplication algorithm with \$\sigma\$ elementary multiplications iff the following function evaluates to zero: $$ \text{error}(A,B,C) \equiv \sum_{i,j,k,l,m,...

code-challenge fastest-code

caird coinheringaahing

@NewPosts This went through the Sandbox FYI

DLosc

> The diamondback terrapin or simply terrapin (Malaclemys terrapin) is a species of turtle...

More surprisingly (to me), tortoises also count as turtles.

Redwolf Programmed

Ooh, I'll add that to my list of "things people like to be pedantic about, when they're wrong so I can be a level more pedantic"

DLosc

16:32

I mean, it depends on context. Precise scientific terminology may be different from common usage. en.wikipedia.org/wiki/Tortoise#Terminology

Wezl programs redwolf

ᓀ̈

^ does this display for anyone?

Redwolf Programmed

Not for me

Just two squares

DLosc

@Wezlprogramsredwolf Yes

If what you were going for was a face with the eyes way off to the side

(I'm on Firefox)

Sandbox Posts

0

A: Sandbox for Proposed Challenges

This challenge (and test cases) are inspired by the work of Project Euler users amagri, Cees.Duivenvoorde, and oozk, and Project Euler Problem 751. Concatenation Coincidence A non-decreasing sequence of integers an can be generated from any positive real value Θ by the following procedure: \begin...

hyper-neutrino

@emanresuA wait what am I doing now

Thomas Ward

16:42

@hyper-neutrino providing me with free coffee? :p

hyper-neutrino

sure :P

Wezl programs redwolf

@emanresuA tsk tsk all this cursing on the starboard

5

Aaroneous Miller

@Wezlprogramsredwolf No those are my passwords

Wezl programs redwolf

tsk tsk, passwords should be pinned not starred

DLosc

17:01

@AaroneousMiller using a 1-character password for something? smh

Redwolf Programmed

If you had all of unicode available, it's not actually that bad of a password. Better than 123456 or password.

DLosc

I think we all know which Unicode character it is, though

Redwolf Programmed

ඞ

Oh apparently there is another:

> “숫” U+C22B Hangul Syllable Sus Unicode Character

hyper-neutrino

lol

숫시바까

DLosc

Now that's an international message

Redwolf Programmed

17:25

It's cold outside!

It's cold, dark, and rainy. Yayyyyy!

pxeger

18:25

@thejonymyster "Florida has no official state nightmare" was inexplicably funny

emanresu A

18:40

@hyper-neutrino Implementing øD because I still don't understand it

hyper-neutrino

what is that again

emanresu A

19:00

Dictionary compression

You managed to fully optimise it in a way I still don't understand

@RedwolfProgrammed Ik lol

This is a rare sight: Two good challenges by new users in one day

@pxeger The whole function is generated by copilot

o/

codegolf.stackexchange.com/a/171506/100664

Look at the revision history :p

pxeger

@emanresuA for non-10k+?

caird coinheringaahing

@pxeger Its spam

Opens with

> BECOME ILLUMINATI MEMBER FOR FREE AND BECOME RICH, FAMOUS AND PROTECTED

pxeger

lmao

caird coinheringaahing

19:16

> All new members are given the following benefits:
[...]
6. A house of your choice at any location of your choice Please note that becoming a member is totally free of charge, anyone that tells you to pay money to become a member such is a scam please be aware.

This clearly isn't a scam, why was it deleted???

Redwolf Programmed

Uh oh I have a 1000 word report due tomorrow

Thomas Ward

sounds like you need to get to work :P

Redwolf Programmed

Yeah but it'll be so much workkkkk

pxeger

@RedwolfProgrammed write it with your TNB text generator!

Thomas Ward

i was gonna say ^^ that lol

hyper-neutrino

19:19

1000 words is simultaneously a lot and not enough

if that makes sense

Redwolf Programmed

You: Yo can y'all write a 1000 word report for me on greenhouse gas mitigation in agriculture, thanks
MD XF: in your own chatroom?

You: Actually a google doc would be better
user: Better but still arbitrary
You: How about LaTeX?
jrenk: haha best one yet

You: Okay, sure. But make sure to cite your sources.
Mars Ultor: No i don't need to thanks
You: If you don't it's plagiarism.
totallyhuman: I suggested it /shrug

That's probably enoygh TWTNB for now :p

What a bunch of slackers

pxeger

> slackers

you're the one who's procrastinated a 1000-word report until the day before it's due... :Þ

Redwolf Programmed

New emoticon: ˙-˙ ._. ˙-˙

Redwolf Programmed

19:43

Ugh I swear my school's science classrooms have never once cleaned their goggles

Thomas Ward

does a thing and makes @RedwolfProgrammed hand-write the 1000-word report now

Redwolf Programmed

They smell so strongly of sweat that I think wearing them is more of a hazard

They are bright yellow

And cloudy

They are supposed to be clear

They're stored in a thing that has a UV light to kill bacteria, so they presumably think that that's enough to keep them clean

caird coinheringaahing

Stop complaining about the goggles and do the report :P

Redwolf Programmed

Not now, I'm in latin :p

caird coinheringaahing

Honestly, if I'd taken latin, I would've just used that as a free study hour :P

Redwolf Programmed

19:50

I basically do but I'm in the middle of some math homework

I'm also behind on an english assignment

hyper-neutrino

I'm no expert but I'll hazard a guess and say that chatting about being behind in TNB won't help you catch up :P

Redwolf Programmed

22:14

>:| The site one of my math assignments was on said the assignment was due today. And it was, at 10 am. That would've been useful to know.

But hey, at least I get a 69% on it. In a way, that's nice.

user

22:24

420% would be nicer

hyper-neutrino

redwolf is a very responsible student

what's your school's late policy lol

Redwolf Programmed

I have no idea, I think they actually still accept late work at any time (which I think they'd decided on last year due to covid)

hyper-neutrino

oh lol

Redwolf Programmed

This site seems to have a 25% off penalty though

user

@RedwolfProgrammed Nice

hyper-neutrino

22:30

my cs245 class has -3% per hour late which is really generous and the most lenient one i've seen (and probably will ever see)

user

We have a due date and a deadline, and you get 10% off if you submit after the due date but before the deadline

Luckily, even if you don't submit any work whatsoever, you still get 50% because this year the school board decided to be super generous

Before the pandemic, it wasn't as great, but you still got 50% even if you turned in a drawing of a dinosaur eating a burrito

hyper-neutrino

lol wut

user

ikr

That 50% rule actually saved me after I got like 40% on a test

DLosc

@user Wait. I'm SURE I've seen this comment before. Am I in a time loop again??

user

You're stuck in a time loop , DLosc, wake up!

DLosc

22:33

@user Waah! Wait, didn't you say that before?

user

I'm stuck in the time loop too now!

DLosc

Maybe it's actually time recursion and we'll hit the stack limit soon

user

@DLosc There's two (basically one) results for "dinosaur eating burrito", but I didn't say it

nvm I did say this

I love how my thoughts went to the exact same place when that topic came up :P

DLosc

Ah, the loop is a little different this time. So it might not be an infinite loop after all! That's good.

user

An infinite loop can still vary a little each time ;)

Redwolf Programmed

22:38

Someone had uploaded a drawing of a dinosaur eating a burrito at one point I think

Which is what prompted that message you can see in the search

user

Jul 16 at 20:11, by caird coinheringaahing

Redwolf Programmed

23:13

Oh hey, just found another section on that math thing, so now I have a 78% instead of a 69%. It's not as nice but it's a lot more good.

hyper-neutrino

noo you ruined the funny number (but good job lol)

lyxal

Marks are the one thing I'm okay with ruining the funny number to get better marks

hyper-neutrino

I ruin the funny number to get lower marks B)

Redwolf Programmed

23:35

One day I'm gonna try to get all my vital signs to be funny numbers

Pulse rate should be easy

hyper-neutrino

o.o

Redwolf Programmed

It'll be hard to explain why my blood pressure's 69/420 though

Because I'll have exploded

user

@RedwolfProgrammed Easy, just define your own units and continue using the same vital signs as before

No need for any exploding, it's kinda unsanitary

lyxal

Yeah, exploding kinda doesn't bode well with social distancing

Because you go all over the room/area and bits could travel within 6 feet of someone else

user

True, and they might even fall in food and stuff, which is just gross

I only eat cooked dead meat, not exploding dead meat

lyxal

23:46

Exactly

lyxal

23:56

@RedwolfProgrammed well luckily it's not js lol

@pxeger it's from copilot generating element boilerplate and implementation

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