The Nineteenth Byte - 2021-06-28 (page 2 of 5)

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9:02 AM

@wasif what should i clarify

9:33 AM

I got ninja'd by 1 minute

do you enjoy the puzzling site?

I think I might join you there when I wanna take a break from coding

I'm very close to solving your quine challenge, by the way

solved!

9:50 AM

Nice!

10:11 AM

CMQ: has it ever happened to you that you actually save bytes when fixing a bug? Like just now

(now time to actually golf this. Seeing as it takes 10 minutes for one run, this will take a while)

Unrelated String

think so

can't remember distinctly

10:32 AM

@RecursiveCo. Yes

@RecursiveCo. Oh, because you're sending 300 requests...

10:47 AM

at least every byte you golf it gets quicker

True

yep

11:28 AM

@lyxal Hi! It's almost done, I just need to:

- make the textarea autosize

- configure the color scheme

12:13 PM

0

A: Sandbox for Proposed Challenges

Days of the Week Tag: [code-golf] Create a function that accepts a list of dates and returns the days of the week in one of the following formats: A format similar to MTWTFSS or SMTWTFS (i.e. beginning with Monday or Sunday), with non-days replaced by an underscore _, illustrated below. WEEKDAY ...

When Jelly loses to Perl

CMC: Write a program in 51AC8. Oh there is documentation

@Bubbler wow nice, don't know if you have/use discord but if you do there's a code.golf discord server discord.com/invite/eVCTkYQ

12:34 PM

I have a version for the quine challenge that doesn't use external sources, should I edit that into my existing answer or submit a separate one?

it's almost identical to tsh's, though, just with a ~30 byte saving

here it is

Unrelated String

i'd generally advocate for editing it in

I suggested it to tsh just now

@cairdcoinheringaahing I believe the OEIS is wrong! I optimized my solution so not all partitions are tried – but then I found some solutions, where not all primes are needed. For example, for n=46 I found 21653939146794 which is lower than the OEIS 3180417880379694.

0

Q: Peter is Puzzled!

As some of you may remember, Peter, who was a picky eater is now puzzled Peter. This time Peter got some puzzles as a present from his Aunt. He has tried a lot, but has failed to solve the puzzles. Peter needs your help to solve them. Each one of the puzzle has 2 pieces. To solve the puzzle, you ...

code-golf binary-matrix

1:18 PM

@RecursiveCo. you really had to go ahead an jinx it didn't you ಠ_ಠ :P

lol

Good morning by the way!

(it's actually mid-afternoon here, but for you probably morning)

9:20 AM

You wake up at 920?

or you just came here 920

i woke up at like 9:10

MCM: Given an integer x, print the factorial of it

1:24 PM

what's a MCM?

i think you mean CMC

do we have to handle negative inputs?

@PyGamer0 jelly: !

^^ and also half the golfing languages out there :P

@PyGamer0 Javascript, 17 bytes f=n=>!n||n*f(n-1)

1:38 PM

@PyGamer0 x=>x! should work in proton

@PyGamer0 K: */1+!:

this one covers the rest of the languages

why on earth cant i reply to myself

ok here is my answer 51AC8, 3 bytes: īm!

@Razetime yeah, why

@Razetime replying is hard innit

@RecursiveCo. mini chat my challenge

@Razetime you are using the mobile ui?

lol nope

think

what happens when you click the reply button on someone else's message?

1:47 PM

how on earth?

@Razetime gaming

@Razetime puts a : and numbers

now what do those numbers represent

wait

:58469672 ok is this it?

nah

you wrote the wrong message number

lol

@Razetime like this

1:50 PM

@PyGamer0 ok?

oh done

there we go

and that's how you exploit broken chat features

yaay

@PyGamer0 Scala 2.12 or -language:postfixOps: 1 to _ product

caird coinheringaahing

2:15 PM

@RecursiveCo. We normally have "waves" of challenges. I think we had about 5 challenges in a day a couple of days ago, then nothing for the past two days. It's not too unusual nowadays

@LeakyNun Hey Leaky, it's been a while!

Does 178 bytes sound long for a JS answer to the recent Peter challenge?

I'm afraid to post my solution only for some experienced golfer to post a 60-byte one

caird coinheringaahing

@xash Hmm interesting. I double checked it, and that appears to work, so that's really cool!

That also means that ovs' and Nick Kennedy's answers are both wrong, as they return 3180417880379694

My inbox:

inbox

caird coinheringaahing

Or rather, wrong for the bounty, not the challenge

@math SE doesn't show rep loss that way

@hyper-neutrino why did you delete your APL answer on codegolf.stackexchange.com/questions/230636/peter-is-puzzled

2:30 PM

because it doesn't work

@cairdcoinheringaahing oh i understand rep loss should be red

wait gonna change that

i got lazy and stopped entering at the third test case but it doesn't work on the fourth one lol

ah

due to stencil padding with zeroes or smth like that

user image

better?

2:32 PM

It never shows me rep losses at all

well other than the fact that reputation loss is not shown at all, it looks less unbelievable than if it were green

I wonder if the inbox thing actually shortens 15xxx to 15k

@user ugh you can't even make a good joke on SE

Can someone give my sockpuppet a thousand notifications to test this?

why does SE not show rep loss?

2:33 PM

idk, I find it very annoying

a thousand might take a while but I should be able to just spam superpings or smth. i think that's the least bad way of doing it

If someone downvotes you, you should be notified so yuo can fix your post

@hyper-neutrino You could probably write a script to send a message every few seconds

Unrelated String

instead of just seeing +9 a day later

@user Actually, I could do it myself

Unrelated String

(although downvoters are generally advised to also comment(

2:34 PM

if the downvoter comments, you will get notified anyway and you can let them know you've fixed it

if they don't, fixing it won't make them undownvote anyway, and if they don't explain, how are you supposed to know how to fix it anyway

Fair enough

the only time I downvote here without explaining is when the solution is just plain boring and there isn't any way to fix it other than "don't be boring"

@math you making a custom theme or something?

Unrelated String

i downvote without commenting when someone else has downvoted with a comment already for the same reason

@UnrelatedString same

2:36 PM

And upvote the other comment

@EliteDaMyth no

@user Testing in this room, feel free to contribute

caird coinheringaahing

2:51 PM

@user It doesn't IIRC

Oh well, getting a lot of pings is still fun :P

caird coinheringaahing

Not sure about the website, but if you get more than 20 notifications it collapses to "20+" on the app, and I think they use the same system through the API

On the website, it shows you the number, at least up to 92 notifications

CMC: Write a program that does nothing.

Scala REPL, 0 bytes: ``

2:58 PM

:58470698 yes

The above two programs work in APL too.

@hyper-neutrino How?

@user zero width spaces

(please use the Sandbox if you want to experiment with chat markdown)

2:59 PM

Oh lol

CMC: Print "Bye, World!"

without quotes

with all punctuation

@PyGamer0 'Bye, World!' in many languages.

caird coinheringaahing

Jelly, “Bye, World!

There's probably a shorter compressed version tho

Vyxal: `Bye, World! without compression

JAPT: 11 bytes (counting the first `) `Bye, Wld!

3:03 PM

it compresses to “3ḅaċḂỊ» in Jelly

and therefore “3Ըa÷ᶑʉ» in yuno because I am not creative

The end quote can't be removed?

it indicates that it's a compressed string

Oh, I see

jelly has five types of strings; normal, compressed, codepage index, base 250 number, and unused

unused?

caird coinheringaahing

3:06 PM

« currently has no meaning

i forget what it does but it is undefined behavior

caird coinheringaahing

Functionally, it's equivalent to “...”

oh, okay

CMC (challenge made by my brother): Take a number and find its 5th root.

caird coinheringaahing

So it's useful for challenges that put requirements on the source code

@PyGamer0 Jelly, *.2

3:07 PM

@PyGamer0 5∘√ in dzaima/APL and Extended Dyalog APL.

@PyGamer0 Wow, you must be the number 1 CMC creator this month! a=>a**.2

@cairdcoinheringaahing how does that work?

@PyGamer0 just to be different from Jelly - yuno, also 3 bytes: *ғ5

oh wait i get it

@PyGamer0 * is power. .2 is 0.2`

caird coinheringaahing

3:07 PM

The sacrifice when posting this :P

wow i completely forgot the power operator in 51AC8

CMC (why on earth am i making these): Given a number print the hex representation of it

@PyGamer0 Can we print the decimal hexadecimal digits?

E.g. for 255, can we print 15 15?

no he actual representation

> Does 178 bytes sound long for a JS answer to the recent Peter challenge?

@PyGamer0 Haskell, 2 bytes: id. Takes input as a hex string :P

3:12 PM

like 255 -> ff

@PyGamer0 How does the actual representation look?

@PyGamer0 How about uppercase, prefixes, etc?

@Adám I guess they mean a string with F instead of 15

@Adám no uppercase or prefix

n=>n.toString(16)

@user Right, I got ninja'd.

Newly Featured Posts

3:14 PM

20

Q: Find the Erdős–Woods origin

Consider, for a given positive integer \$k\$, the sequence \$(a, a+1, a+2, ..., a+k)\$, where \$a\$ is some positive integer. Is there ever a pair \$a, k\$ such that for each element \$a+i\$ in the sequence, either \$\gcd(a, a+i)\$ or \$\gcd(a+i, a+k)\$ are greater than 1? This was investigated b...

code-golf math number-theory

@Adám And me too, I guess

@cairdcoinheringaahing welp it's meta

not much damage to the rep

@PyGamer0 How many digits should we use? E.g. should 256 give 100 or 0100? (or can we choose?)

@PyGamer0 yuno, 7 bytes: b16’ɨᴋh

hm. maybe i should overload an argument nilad to 16

@PyGamer0 ruby 9 chars "%x"%gets

@RecursiveCo. not really that long

3:20 PM

oh k

6 bytes in Jelly: b⁴‘ịØH (or b⁴‘ịØh if you want lowercase)

"%x".__mod__ in Python (function submission)

@RecursiveCo. the python one uses 2 builtins, and is still 109

True.

mostly because the built-ins' names are long.

yea

you should post your js solution, maybe osmeone fill find something to golf it down further

caird coinheringaahing

@hyper-neutrino 3 bytes in my fork: ṃØḥ

3:23 PM

oh nice

@cairdcoinheringaahing Would that not be a standard loophole? ;)

the fork has been around for a while

caird coinheringaahing

@RecursiveCo. No :P

and it wouldn't be, either way

the thing existed before the challenge was made

so i guess not

3:24 PM

oh okay

caird coinheringaahing

The only "new" thing there is Øḥ which is just Øh but with 0 at the end not the start

Because for some reason, the base digits constants are 0-indexed in Jelly :/

@PyGamer0 Vyxal, 3 bytes: k^τ

caird coinheringaahing

Any feedback?

3:50 PM

@cairdcoinheringaahing does sorting the entire array randomly count?

is l strictly a subsequence of l?

1

Q: Turning off the mobile feed for the Stack Exchange app

As we've recently mentioned, we are no longer actively supporting our Stack Overflow and Stack Exchange apps on iOS and Android, and they have both been delisted from the App Store and Google Play. While we are maintaining key APIs that allow the apps to keep running for those who have already in...

discussion android-app ios-app announcements

I come bearing bad news, fellow Stack Exchangers.

well i suppose putting it out of its misery is good

There's always people who depend on some old "feature"

I'm sure tons of people still use the chat app for notifications or actually browsing SE

Relevant xkcd

XD

4:03 PM

New Posts - Challenges - Code Golf: Create a Sudoku

posted on June 28, 2021 by AndrewTheCodegolfer

Write the shortest program that takes no input and outputs a Sudoku solution. For reference, a Sudoku solution is a 9x9 grid of digits where each column, each row and each of the nine 3x...

@user (Thanks for the stars, but it's an xkcd, not particularly star-worthy)

Please star this message instead :P

bruh

Redwolf Programs

Should I star-clear it?

go ahead i suppose

@CodidactPosts same challenge on SE: codegolf.stackexchange.com/q/172474/68942

4:07 PM

ohh it doesn't have to be random

interesting

caird coinheringaahing

@hyper-neutrino Guess I'm only using the app for notifications then :/

@RedwolfPrograms the excerpt can also be golfed to "This tag is for challenges involving matrices, also known as a 2D arrays, which are lists of numbers arranged as rectangles with rows and columns." :P

but then it becomes too cluttered and unclear

@cairdcoinheringaahing yeah, until eventually they probably turn that off too :/

Redwolf Programs

"tag 4 matrix, the 2d thing"

caird coinheringaahing

@EliteDaMyth No, as that doesn't do what the task says

but yeah, for now, notifications are still around \o/

caird coinheringaahing

4:21 PM

@hyper-neutrino If they disable notifications, there's literally no reason to have the app

yeah

Redwolf Programs

Starting on my online interpreter now. I suppose I'll use git.

good idea :p

caird coinheringaahing

16 hours ago, by caird coinheringaahing

Ok, so it looks like the only feedback on this was this, leading to this suggested modification. Thoughts on using that suggestion, and thoughts on finalizing the wording?

4:41 PM

@hyper-neutrino this is a 100 times simpler than what i expected

Redwolf Programs

5:01 PM

I just found the coolest feature ever in the chrome dev tools

If you click on a color in the styles panel, you can click somewhere on the screen and it'll copy that color for whatever property

It also zooms in on the area around the cursor, so you can see the pixels easier (which is useful for a lot of stuff other than choosing colors)

user image

Why look at code in roboto mono when you can use roboto?

I love the kerning

I downvoted an answer but haven't got the -1 yet. Is there some condition that makes that not occur, or is it just caching?

caird coinheringaahing

Probably caching

@RedwolfPrograms shouldiblamecaching.com

caird coinheringaahing

Answer downvotes always give -1, assuming the answer hasn't been deleted

@RedwolfPrograms IME the -1 only appears when there is some other change to your reputation to force a recalculation

Redwolf Programs

Oddly there has been one

caird coinheringaahing

5:16 PM

It would also appear here tho

if you don't mind sharing, what answer did you downvote and when (i assume just minutes ago)?

Redwolf Programs

This, about an hour ago according to SE

Oh, is it because it's CW?

do you not lose rep for downvoting CWs?

Redwolf Programs

Apparently not

13

A: Does it cost rep to downvote a community wiki post?

No. Voting on a community wiki post (up or down) does not affect any user's reputation. Source: FAQ

caird coinheringaahing

Oh, no you don't

CW basically ignores all rep aside from bounties

5:35 PM

@hyper-neutrino wait, I'm stupid. I remember why I didn't add an overload to 16 now

-1 byte: bʙ’ɨᴋh

6:15 PM

I just saw this answer in Taxi and I think it deserves more than 2 upvotes. The poster clearly spent a lot of time golfing, tried several different approaches to deal with the limitations of the language, and explains it all pretty thoroughly.

Redwolf Programs

That should definitely go in the next blog post

@hyper-neutrino

beat you to it

in CGCC Blog Chat, 1 min ago, by hyper-neutrino

I think this is deserving of a spot on the underrated answers list

Redwolf Programs

To be fair I wasn't at my laptop until a few seconds ago due to an encounter with a cute cat

lol

caird coinheringaahing

Speaking of the blog, anyone willing to help Razetime with the next post?

Redwolf Programs

6:21 PM

Sure

What is it going to be about?

caird coinheringaahing

Explanations, I believe

I could help out a bit

Redwolf Programs

I usually don't properly explain my answers lol, but I think I could help out a bit

I'm a fan of explanations. Sign me up.

6:26 PM

@user Actually nvm I don't think I can help

I might be able to help - I explain almost all of my Jelly answers and I hopefully have some experience

also maybe I can have an excuse to make more videos :p

your explanations are always good so +1

Time for an explanation on how to do explanations

Redwolf Programs

I'm not sure how to do that. Can someone explain it to me?

@cairdcoinheringaahing What will you be talking about?

caird coinheringaahing

6:35 PM

@AviFS The blog post? I believe Razetime's started a plan on how to write a good explanation

How to write good explanations/formats for doing so? A persuasive thing on why everyone should write explanations?

@cairdcoinheringaahing Ah, a how to?

That's pretty hard!

caird coinheringaahing

in CGCC Blog Chat, Jun 23 at 5:20, by Razetime

I'd like to write about formatting explanations

Would it be naive to write them in google docs, and pin the link to it?

With permission for everyone in the room to edit? (Edits can easily be reverted.)

That exposes emails

caird coinheringaahing

^

6:37 PM

Only one person's, though, so if someone has an email they don't mind sharing, they might be able to make that work

I have a feeling that could be fun and work well given the group, but it's also possible it'd devolve into chaos

Redwolf Programs

For the last one we just wrote sections individually and posted them as markdown on the repo

caird coinheringaahing

If you'd like to avoid github, feel free to email the draft to cairdcoinheringaahing@gmail.com and I'll add it to the repo

If emails are something people are worried about, you can always have "everyone with the link can edit"

and only post the link here

@cairdcoinheringaahing You have an email based on that username?

@AviFS TNB is accessible to anyone, so that means you could still be spammed and stuff

Redwolf Programs

6:38 PM

But edits are trivially reversible

Is it just for CGCC or general? I feel like the email you shared once had your real name

caird coinheringaahing

@AviFS I do (not my "official" email tho) :P

I have 5 main emails, two specifically for CGCC related stuff that I'm happy to publicly reveal

Ah, yeah I think once you shared one with "Jay." I won't say anything!

Redwolf Programs

I at one point had a redwolfprograms gmail account, but I don't use it for anything

redwolf10105 is my main one, although I use my school one for most stuff

And then I have infinitely many that end in @redwolfprograms.com :p

There've been 10104 red wolfs before you?

caird coinheringaahing

6:40 PM

@AviFS Yeah, my actual emails I have my name in my signature (of course, I also have my names in my profile, so it's nothing :P)

I made a thetarpitroom@gmail.com just for giving people permission to talk in the The Tarpit

Like APL Orchard does

$\theta r$ pit?

No one has ever used it, haha

@user Not a bad name

Since we call "useless" esolangs turing tarpits

@cairdcoinheringaahing I checked your profile first; that's the only reason I said anything!

what do you use it the tarpit access email for; getting people you know by email to request access for an account you don't know?

No, I use it a la Apple Orchard, in principle

If they don't have 20 rep and want permission to talk

6:42 PM

ah, okay

if you need access for certain accounts just ping me

Thanks hyper!!

@user theta r pi t

Any thoughts on Google Doccing?

Redwolf Programs

I'd be fine with it, but I'm not sure if it's really necessary tbh

Plus we'd have to agree on a font :p

I don't think a google doc is necessary either and I'd rather just keep it in the git repo we have lol

Ah, this is the blog post topic

docs are nice for two people editing together but let's be honest more often than not our issue is we have nobody editing

6:46 PM

@RedwolfPrograms Wingdings ftw

@hyper-neutrino Because we don't really know what we're getting ourselves into :P

If we could easily see where you were, what you had & what you were doing

It'd be very easy to pipe in

Redwolf Programs

That is a good point

caird coinheringaahing

in CGCC Blog Chat, Apr 20 at 22:06, by caird coinheringaahing

google doc doesn't support markdown

oh also a good point

Plus, the less the friction to get there, the more people will to contribute

caird coinheringaahing

6:47 PM

It can be a pain to port over a google doc to markdown

There are collab md editors

caird coinheringaahing

If y'all want to create a google doc tho, I'd be happy to port it into markdown once you're done

hackmd.io

hackmd isn't a bad idea actually

but is revision control as easy?

Redwolf Programs

Porting to md isn't too difficult tbh

6:48 PM

Hm, Idk

caird coinheringaahing

I think we decided on github last time because it was just the easiest. Any format that works is good (although keep in mind that Razetime is also contributing to this)

@cairdcoinheringaahing We can give it a shot!

hackmd.io/@qPJVBcuTTFWd3DNdqXhdgQ/SkN3KcvhO/edit

Should allow access without signing in, since emails are a concern

Let's just hope we don't get raided

Redwolf Programs

Finally at a multiple of ten rep lol

12750 is a really nice number, too

I like the color scheme

@hyper-neutrino I set up the hackmd to sync with my github, it has permission only to push to this

github.com/AviFS/CGCC-Blog/tree/main

So after an edit, you should be able to push to that github

@Razetime Mind copy/pasting what you have there?

@RedwolfPrograms Mind checking that you can also push to GH?

Redwolf Programs

There's an existing CGCC blog repo

6:57 PM

I know, but I don't have perms to authorize that on hackmd

If this works out, someone can set it up with the official

You may also not want to, if you're worried about raiding

People have permission to push to any file in that repo

I'm happy to maintain it, though, or at least to try it out

Redwolf Programs

The lengths of all of your messages are almost identical and it looks really cool

Hahaha, thanks

It kind of is, tbh

But it's the worst that my messages are such big blocks...

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The Nineteenth Byte

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