The Nineteenth Byte

Adám

00:01

Hold on, iirc, mod voting is on answer posts to an election post, so we should be able to downvote too, no?

DJMcMayhem

@Adám I'm not sure what you mean

Adám

@DJMcMayhem Nah, I just checked. The election uses a special interface, not just a meta post with answers. This means we can only vote for candidates, not against them. Would otherwise be useful to avoid bad candidates winning due to lack of good candidates. Though, to be fair, "democratic" countries occasionally suffer this kind of situation too…

Jo King

Looking through the candidates for previous elections, there was only one other candidate for the 2018 one (PhiNotPi). I'm not sure if the users from the 2016 election not participating in the 2018 one means they aren't interested in moderating, but not many of them are that active anymore (except maybe in chat)

Adám

00:17

@JoKing Right, but who says people who would have wanted to run, still would like a diamond, given the current… delicate situation?

Bubbler

03:46

Any feedback for this and this?

New Meta Posts

04:30

0

Q: The relationships between question length, views, and votes (and more painful graphs)

I recently meta'd some interesting research I'd done relating to the correlation (or lack of) between the time a question is asked and its view count. I got some comments suggesting I look into other interesting things, so I dusted off my text editor (lots of dust builds up in 23 hours, I guess) ...

New Main Posts

09:10

1

Q: 20 cards with no Set

Background Set is a card game. The deck consists of 81 unique cards that vary in four features: number of shapes (one, two, or three), shape (diamond, squiggle, oval), shading (solid, striped, or open), and color (red, green, or purple). For convenience, let's write a card as a 4-tuple of numbe...

code-golf card-games

Anush

09:35

hello all!

Jono 2906

@Anush hiya!

Anush

anyone here know about function multiversioning (in gcc/clang)?

I suggested to the author of nmslib that they use function multiversioning. The reply I got was " something to think about. However, it can actually be quite tricky. All the other functions need to be marked with SSE2. Also, I would somehow need to pick-up the SSE2 version of the standard library and to compile only these functions with higher targets. What happens if you specify -msse2 and then mark a function with the AVX target? Will only this function be compiled with AVX?"

anyone know the correct technical answer to those questions?

A _

09:56

@Anush hi!

I am trying to find out what is nmslib...

Anush

github.com/nmslib/nmslib

A _

Thank you, that was really helpful.

feersum

10:26

@Anush You're discussing multiversioning on x86? Why? Sholudn't you be using a 64-bit built if you care so much about performance?

A _

(Completely unrelated. I found a Hot Network Question that is closed.)

(I feel that this is pretty rare, most other challenges I find did not become a Hot Network Question, e.g. this.)

ngn

@feersum it could be 64-bit with or without avx

feersum

@ngn Yeah I was focused on the SSE2.

Anush

@feersum it is 64 bit I believe

feersum

@A_ I suppose that's the kind of anarchy you get when moderators resign en masse.

A _

10:40

: 52499569 This is indeed the first time I see (at) Jo King joking.

Anush

:)

A _

I am a bit bored of the silence, is there more to discuss?

CMC: The electricity company had presented a new standard for paying electricity bills. The payment system is split into the following 3 categories:

Level 1. If I used <100 units of electricity, I need to pay 1 coin(sorry for the uninteresting term) for the bill. Level 2. If I used 100~200 units of electricity, I need to pay 3 coins(sorry for the uninteresting term) for the bill. Level 3. If I used >200 units of electricity, I need to pay 4 coins(sorry for the uninteresting term) for the bill.

But I have to leave.

Anush

10:57

@A_ yes.. my word game puzzle :)

anyone used inpainting? I have a picture I want to clean up

A _

12:01

@A_ Take a number as input representing the coins I paid for electricity, output which level I am paying for.

@Anush Clean up? Put a 5,000 pixel black dot in your picture.

This will remove all of the unneccecary objects in your picture (which is exactly one of the meanings of "cleaning up".)

Veskah

13:29

Son of a gun, forgot my lunch at home.

A _

@Veskah Don't be nervous, I have already skipped my lunch.

It is actually very fun to use the lunch time to solve CGCC challenges!

Veskah

Not nervous, just going to have a vending machine lunch.

A _

Sorry, I didn't realize that. (What I skipped is exactly the machine lunch.)

A _

13:52

My previous one is obviously too complicated. CMC: Trunctuate a decimal that is not an integer to 3 decimal places.

Adám

@A_ Truncate or round?

A _

@Adám Trunctuate, not round.

Some examples: 0.166667->0.166, 1 -> 1.000, 1.1234 -> 1.123

Adám

@A_ Is 1 → 1 acceptable?

Otherwise we can't return a numeric value, but rather have to return a string.

A _

I guess it is okay...

Adám

@A_ APL (Dyalog Extended), 10 bytes ⌊⍢(1e3∘`×)

It means "floor while thousandfold"

A _

14:04

By the way this CMC is the most tedious part of this challenge. The proportion k/n must be truncated to two decimal places.

New Sandboxed Posts

14:46

0

A: Sandbox for Proposed Challenges

Monokeyed Words (Based on https://what-if.xkcd.com/75/) Old mobile phones had letters and numbers assigned to the same key, as follows: 1 2abc 3def 4ghi 5jkl 6mno 7pqrs 8tuv 9wxyz 0 [space] from any given list of words or phrases (input, formed of 0-9 a-z and space), find the word which has...

Sam Dean

I was attempting to answer yesterdays average two letters challenge whilst avoiding using ord() and chr() using PHP's ability to increment letters. Try it online!

The feature doesn't increment from upper to lowercase or vice versa though. So it currently breaks when both inputs aren't the same case. Any suggestions?!

dzaima

15:03

@SamDean a harder case would be the inputs "Z" and "a", where the expected answer is not a letter

Sam Dean

Oh yea! For some reason I'd got it in my head the average would always be a letter...

Hmm yea I don't think this is going to work haha

user132126

15:49

Hi, all. I was wondering if there's a technical name for the technique of doing a modulus on a string hash to map values, like seen in several answers to the recent Eeveelutions golf

dzaima

16:18

@WebHead perfect hash

user132126

I wondered if it were so simple.

user132126

Thank you

Kritixi Lithos

18:09

@WheatWizard (thinking about this again recently) actually, couldn't you interpret that "disproof" as demonstrating that there are simply infinitely many such languages, so you can always keep on adding more instructions to it

New Main Posts

18:29

0

Q: Expand a recursive pattern

Given a description of the base state of a recursive ASCII pattern, output an expanded state somewhere along the recursion steps. More specifically: Let the following be an example: ##.. ##.. ..__ ..__ Where # is filled, . is empty, and _ is recursive. This describes a pattern wherein the to...

code-golf ascii-art matrix

Sherlock9

19:12

Just to let you guys know, we're trying to kickstart (read: revive) a coding challenge Discord server I made some time ago. If you'd be interested in joining, let me know and I'll put an invite somwhere around here :D

DJMcMayhem

@Sherlock9 I'm interested

:P

Sherlock9

XD

dzaima

@NewMainPosts i misread the question (well, more like just didn't read it at all other than the 1st example) and made this :D

totallyhuman

i'm interested i guess

Sherlock9

19:33

@totallyhuman This invite should be fine discord.gg/sUS29jd but it is set to expire after a limited number of uses, so if people continue to be interested and the invite expires, let me know

totallyhuman

i'll join once i'm on an unrestricted wi-fi network

AdmBorkBork

20:32

CMC stackoverflow.com/q/58800418/9828759

I have 40 bytes in PowerShell

DJMcMayhem

V, 6 bytes: òjv}gJ

dzaima

@AdmBorkBork dzaima/APL, 12 bytes

AdmBorkBork

Whoops, forgot to linkify my "40 bytes" ... oh well. Try it online!

DJMcMayhem

1 byte longer but more readable (IMO): ç./v}gJ

ngn

@AdmBorkBork k, 14

dzaima

20:40

@ngn the output should be a vector of the strings

ngn

@dzaima 16

15

AdmBorkBork

@AdmBorkBork Wait, 43 bytes, else it doesn't output the last one. Needs a ;$s at the end.

Veskah

@AdmBorkBork codegolf.stackexchange.com/a/195719/78849 here's a bit of a headscratcher I ran into. Not sure how to cheaply fix it either so I took the low road

Adám

@AdmBorkBork Dyalog APL, 8 bytes: ∊¨×∘≢¨⊆⊢ Try it online!

AdmBorkBork

@Veskah Yeah, I got stuck in the same fashion. Thanks, PowerShell, for implicit casting.

BTW, you can sort l* -D for -4 bytes

Veskah

20:48

I think I tried something else and got red text so abandoned thinking about that

Thanks

Veskah

21:01

Oh... DJ deleted it

DJMcMayhem

Yeah... I didn't really want to but it's copied verbatim from somewhere else

Veskah

So it goes

Wheat Wizard

22:03

@KritixiLithos That's what the disproof proves. For example if we had a disproof that there was a largest number then we would also prove that there are infinite numbers.

New Sandboxed Posts

23:57

0

A: Sandbox for Proposed Challenges

Detecting C++ comments in C code-golf c Write a program or function in C that returns 1 if C++ comments are available in the current compilation mode and 0 if they're not. If the program or function is compiled with C89/C90 and no extensions (i.e. -ansi), it should return 0. If it's compiled w...

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