The Nineteenth Byte

4:02 PM

@user202729 It's not the worst challenge on main, but it could do a much better job explaining what it's asking for. I guess that the fact that there's an exhaustive list of inputs and their associated outputs the challenge technically clear, but posting a competitive answer requires a deeper understanding of the task at hand.

So for practical purposes, I'd say the challenge is unclear and should remain closed until improved.

Erik the Outgolfer

@Dennis imo it does not

is that the exact format we should output?

if not, what do the slashes mean?

there are … in a couple test cases; is it really necessary to support them? (more of a downvote reason)

user202729

Does J have user defined data structure?

FrownyFrog

@EriktheOutgolfer I did panic

The comment was very appropriate

Adám

4:18 PM

@user202729 No, I don't think so.

@Dennis How comes I can see this chat profile but not the SO profile linked from there?

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Title: Output numbers, more or less... The Challenge Given an input string (or array) consisting of <, > and =, output a sequence (array or string) of integers such that: the operators are all correct all integers are positive (1 or greater) the sum of the integers is as small as is mathemati...

Dennis

@Adám I assume the associated main account was deleted.

Adám

@Dennis But the chat account can still exist on its own?

Erik the Outgolfer

(chat is buggy :P)

Soaku

Is there any tool to check if a python format string is valid and how would it parse?

Dennis

4:23 PM

@Adám Looks like it. I'm not a mod on SO, so I can't look into it.

Erik the Outgolfer

@Soaku what?

caird coinheringaahing

@Adám Same way that ais523 still has a chat account linked to their old PPCG account

Soaku

@EriktheOutgolfer You know, any online tool that let's me check how would Python parse a format string (ex. test {} example)

Dennis

You could either use a Python online interpreter or I don't understand the question.

Erik the Outgolfer

"parse" the string how?

Soaku

4:26 PM

@EriktheOutgolfer You know how the string.format function work in Python right? I would want a tool that will highlight what exactly gets parsed and what does not. I got a large string and something works quite not right, when parsed by the parse library (which just does the reverse)

Erik the Outgolfer

how can formatting a string be reversed? also str.format (not string.format) isn't related to any imported stuff

Dennis

Just use f-strings.

Soaku

"test {} test" + "test blah test" = ["blah"]

@Dennis f-strings?

betseg

new in 3.6

Erik the Outgolfer

strings of the form f'...', introduced in Python 3.6

betseg

4:29 PM

> a = 3
> print(f"a is {a}")
< a is 3

Soaku

Alright; this seems to do the trick for PyCharm. The problem is that the string is quite large, so I saved it in a file

Erik the Outgolfer

and f-strings expect you to put something in the {}

Soaku

whatever, I'll try

@EriktheOutgolfer That's good. I always fill them

Erik the Outgolfer

then how is the "test {} test" example relevant?

caird coinheringaahing

Q: Is there a way to include literal {} in a .format string? E.g. 'abc \{\} def {}'.format('1') => 'abc {} def 1' or something similar?

Soaku

4:31 PM

@EriktheOutgolfer I just wanted to make sure you get what I want to say

Dennis

@Soaku Not in the same way. You need to provide an expression in f-strings. tio.run/##K6gsycjPM/7/…

Erik the Outgolfer

@cairdcoinheringaahing apart from print('abc {} def {}'.format('{}','1'))?

user202729

@cairdcoinheringaahing {{}}

Soaku

@Dennis Thanks for mentioning f. But about the expressions, well, I figured it out already.

Adám

4:54 PM

@Dennis In such a state, are you able to grant explicit write access?

Dennis

I'd have to try.

Assuming the chat account is still usable.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

First sandbox, so sorry if I'm doing this wrong. The game involves an API which I haven't yet implemented or deployed, but I'd love to have it done in the next couple of days... API Easter egg hunt! There's an API at http://easter_egg_hunt.andrewfaraday.com which will provide a special Easter...

Adám

@Dennis Please.

Dennis

Write access to what room?

Adám

@Dennis Oh, 52405. SOrry.

Dennis

4:59 PM

@Adám Seems to have worked.

Erik the Outgolfer

@Dennis ais523 has been able to use their old account a rather long while after it was deleted...

feature-request: the ability to not have or delete chat accounts

Adám

@Dennis Looks like it. Thanks.

Dennis

@EriktheOutgolfer You can not have a chat account by never using chat. Deletion may require mod intervention.

Erik the Outgolfer

are you able to delete chat(.SE) accounts?

I would like to be able to control my own accounts though :P

Dennis

I think so. That would leave the transcript a mess though, so I don't think it should be done on request.

On second thought, I'm not sure if it would anonymize messages.

Erik the Outgolfer

5:03 PM

I think it would, I remember that happening once

Dennis

In that case, there's a good reason to disallow it.

J. Sallé

It would probably become userXXXXX's message?

Erik the Outgolfer

yes

well, you can't just delete your account on main either, you need to contact mods 'n' staff (unless you have only posted max. 1 post)

user56656

@MagicOctopusUrn This quine is shorter

Adám

Announcement: APL Cultivation in 24 mins.

Dennis

5:06 PM

@EriktheOutgolfer I don't think that's true. codegolf.stackexchange.com/help/deleting-account

Soaku

If anyone here uses Python parse package from PyPI, a help would be appreciated (returns null, diff's show that there is nothing that could go wrong)

Erik the Outgolfer

@Dennis apparently the recent account deletion update made that possible... -1 I don't like that idea at all

Dennis

You literally just said that you would like to be able to control [your] own accounts.

user56656

They still send you an email if you have enough reputations

And you have to wait through a 24 hour grace period

Erik the Outgolfer

I meant that I would have wanted my chat account to be able to be deleted independently of other accounts, not that I should be free to click the "RAGE QUIT" button

user56656

5:11 PM

It's not a ragequit. You have to confirm by email and wait a full day.

Dennis

How is rage quitting from chat different than rage quitting from main? And why would SE force you to keep your account?

Erik the Outgolfer

well, if I would have wanted to delete my account because I had posted adult stuff, and there was no other pretty convincing reason stated by me, would that actually happen? also, I assume internet 101: whatever you associate your name with online can remain associated like that forever

(however I think you can disassociate posts by contacting staff)

Dennis

You can delete your account for whatever reason you'd like. The email and delay are just security features.

Thomas Ward

^ that (I didn't even get a chance to say that >.<)

HyperNeutrino

5:32 PM

@user202729 I fixed line wrapping issues by removing the fancy buttons and replacing them with normal links. fancy buttons should only be used for buttons not links :p

Esolanging Fruit

5:43 PM

I joined and posted an answer on philosophy.SE yesterday, and it now has more votes than any of my answers on PPCG ._.

Riker

oh you're challenger5? wondered where that person had gone :p

AdmBorkBork

Interesting how that question is on philosophy

Erik the Outgolfer

philosophy is a vast subject

AdmBorkBork

Very true. It just seems a sneaky way to get it on philosophy.SE instead of mathematics.SE

Soaku

Anybody has an idea about my problem? Still didn't solve it...

Soaku

6:21 PM

Oh my god, it started working!

caird coinheringaahing

Any feedback?

Soaku

6:36 PM

Woah, 7 upvotes in the sandbox... and the question doesn't even have a month.

Soaku

6:47 PM

@cairdcoinheringaahing In one place (the 3 possible changes) you say "You may edit the behaviour of one existing command" and later you say "You may not remove or change previous commands, including the character used." So I can change it or no?

caird coinheringaahing

@Soaku Yes, must have missed that. Thanks!

Esolanging Fruit

7:00 PM

@cairdcoinheringaahing You don't know what way this language will go, so if it were me I'd leave out the reliance on commands entirely (e.g. would adding a dictionary-compressed literal syntax be the addition of a new command?). Instead, you might reward smaller changes to the interpreter and penalize large changes to backwards compatibility in existing programs (especially changes that make programs longer).

Also, how do you prevent people from just special-casing the 20 problems?

Soaku

^

Cows quack

"In order to be valid, a new submission must have golfed submissions for at least 2 of the problems, by at least 1 byte for each." ?

Soaku

@Cowsquack You need to provide example programs for at least 2 problems given

With each being at least 1 byte long

Esolanging Fruit

@Cowsquack They mean that an update must improve submissions, I think.

Cows quack

that message was supposed to be a reply to your comment on preventing special-casing

Soaku

7:08 PM

ah ok

@EsolangingFruit I think so too. Providing just examples could be stupid - every submission can include the same examples which just don't change

New Main Posts

1

Q: The Great API Easter Egg Hunt!

API Easter egg hunt! There's an API at http://easter_egg_hunt.andrewfaraday.com which will provide a special Easter egg hunt, just for you... You can see the API docs at the above address, or try it from here. The API: All calls to this API are GET requests, which will return a JSON string. ...

caird coinheringaahing

7:26 PM

@EsolangingFruit That has been a problem I've been struggling with. I think that ^^^^^^^^ is probably the best solution, but I'm open to suggestions

totallyhuman

ok now you're just making me count carrots :P

caird coinheringaahing

Cows Quack's quoted message

totallyhuman

CMC: given a non-negative integer n, output the number of digits that are zeroes in all integers in [0, n]

flawr

@totallyhuman octave: 1

but that is probably not what you meant :D

totallyhuman

oh yeah whoops

Erik the Outgolfer

7:34 PM

@flawr he said non-negative, not positive :P

totallyhuman

better?

flawr

@EriktheOutgolfer my answer does hold for all nonnegative n!

@totallyhuman yep:)

DJMcMayhem

@totallyhuman V, 11 bytes: ÀO-1<esc>V{g<C-a>Ø0

Erik the Outgolfer

@flawr [0, 0] has 2 zeroes, not 1 ;)

totallyhuman

urgh that's another misinterpretation

flawr

7:36 PM

@EriktheOutgolfer :D

totallyhuman

CMC: given a non-negative integer n, output the number of digits that are zeroes in all integers 0 <= k <= n

ok now i think it's clear :P

flawr

surely we can have k=n+1, since (1<=k)==1 and 1<=n

but to be serious: in haskell something like that would work: f n=sum[1|k<-[0..n],'0'<-show k]

Erik the Outgolfer

@totallyhuman Jelly, 5 bytes: ọ€⁵S‘

(the obvious version is 6 bytes: 0rDẎċ0)

H.PWiz

@flawr f n=sum[1|'0'<-show=<<[0..n]]

flawr

@H.PWiz I was just trying to shorten it using this monadic Wizardery

Erik the Outgolfer

7:42 PM

what is "wizardery" :p

flawr

the more humid version of wizardry

Erik the Outgolfer

it actually sounds a lot drier lol

AdmBorkBork

@totallyhuman PowerShell, 34 bytes -- (-join(0.."$args")-split0).count-1 -- Try it online!

plus a regex matching version at 45 bytes and the canonical method at 52 bytes

Wait, I don't care about whitespace. 33 bytes

caird coinheringaahing

@totallyhuman Add++, 13 bytes: L,ßRBDBFÞ!L1+

Alternative also 13 bytes: L,d0ßrBDBFÞ!L

dzaima

7:58 PM

@totallyhuman SOGL, 8 bytes

AdmBorkBork

@EriktheOutgolfer Neat. I came up with a different 6 byte solution -- ḊDẎċ0‘

Adám

@totallyhuman Dyalog APL, 11 bytes: +/'0'=0⍕0,⍳

totallyhuman

@AdmBorkBork hold up, how'd I miss you learning jelly

AdmBorkBork

I've been slowly learning it.

I'm not very good yet.

totallyhuman

is anyone? :P it's a tricky language to master

AdmBorkBork

8:08 PM

I find it hard to translate my PowerShell mindset, using a pipeline, to Jelly's mindset. Pretty sure that's my biggest weakness when it comes to using it.

Poke

jelly 3 bytes: ᾷᾥὪ

no autographs, please

caird coinheringaahing

@totallyhuman I'd say Dennis, possibly Jonathan and maybe miles

Adám

@Poke What? That doesn't look like valid Jelly.

totallyhuman

it's not supposed to

caird coinheringaahing

It's meant to be a joke

Poke

8:13 PM

i've been found out

you guys are too smart for me

totallyhuman

CMC: find a challenge that doesn't require any output

caird coinheringaahing

106

Q: Shortest infinite loop producing no output

Your task is to create the shortest infinite loop! The point of this challenge is to create an infinite loop producing no output, unlike its possible duplicate. The reason to this is because the code might be shorter if no output is given. Rules Each submission must be a full program. You mus...