The Nineteenth Byte

caird coinheringaahing

00:48

CMC: Given integers x, y > 0, output their times table (products of all pairs 1..x and 1..y)

Lyxal

01:00

@cairdcoinheringaahing Vyxal: ?£z?ɾ(¥zɾ(nXnx*,` `,)`\n`,)

hmm

@cairdcoinheringaahing Vyxal, 22 bytes: ?£z?ɾ(¥zɾ(nXnx*,ð,)Ĺ,)

Much better

Neil

@cairdcoinheringaahing Charcoal, 12 bytes: ＮθＩＥＮＥθ×⊕ι⊕λ

New Main Posts

02:24

3

Q: Calculate COVID spread

Because the coronavirus is still at large, I thought it would be fitting to have a epidemic-themed challenge. Challenge You are given a 2D array of people, where 1 represents someone with the virus, and 0 represents someone without the virus. Every day, the people with the virus infect their neig...

New Main Posts

03:36

-2

Q: Shortening alternate function calls in JavaScript

I have a condition named a and I want to order the parameters b, c based on this conditions in 2 parameters alternating the order. Currently I have: foo(a?b:c,a?c:b) // 16 bytes I was wondering if there would be a shorter way of accomplishing this since the tenary seems to be a bit repetitive.

javascript

Razetime

05:21

@cairdcoinheringaahing Husk, 4 bytes: ¤Ṫ*ḣ

Lyxal

05:34

Of the people in this room, only 2 have SE Chat bios

caird coinheringaahing

Me and you :P

Lyxal

exactly. ;p

caird coinheringaahing

I really should update mine

Lyxal

holy heck you have a lot of rooms open

caird coinheringaahing

CMQ: What should I change my chat bio to? :P

Lyxal

05:36

"Lyxal wrote this chat bio"

caird coinheringaahing

@Lyxal I'm only really looking at one at a time

Aside from here, JHT and talk.tio are pretty much the only ones I regularly chat in

Lyxal

TIL: chat.stackexchange.com/rooms/240/conversation/rickroll-recital

Razetime

06:00

@dzaima how do empty drawing objects work in Canvas?

@Lyxal wow lol

caird coinheringaahing

I'm considering a challenge idea, similar to answer-chaining, but rather than working in single answer increments, it works on time-based increments. For example, the challenge is posted on the hour at 12UTC. Answers posted between 12 and 1 have to comply by the first restriction presumably set in the challenge. Each of those answers sets a restriction that only comes into force when the clock hits 1UTC and new answers are posted

Razetime

make it time related , maybe?

parsing/ using time

Lyxal

@cairdcoinheringaahing but then if there's a really annoying restriction, people could just wait until 2 UTC and post then

caird coinheringaahing

For example, the first group of answers all have to include the byte 0x53 in their answer. 3 answers get posted within the first hour. Each of these 3 includes a restriction that the next group must go by, let's say "code length > 10", "use 0x00", "has the word 'orange' included". For the next hour, answers posted must follow (all? one? some?) of these restrictions

Lyxal

And that keeps going until an hour passes without answer?

caird coinheringaahing

06:05

@Lyxal I'm thinking it works on a larger scale than an hour (say a day), and the challenge dies if/when an increment passes with no new answers

Lyxal

@cairdcoinheringaahing but I mean circumnavigate the restrictions by waiting an hour

caird coinheringaahing

Add in the rule that you can only post one answer per group

@Lyxal Well, if everyone waits for an hour and no new posts get posted, the challenge dies

Lyxal

Daily sounds good

@cairdcoinheringaahing oh

then who wins?

everyone who posted in a period?

caird coinheringaahing

So someone could kill it in the first group if they wanted to

@Lyxal I like most answers for answer-chaining style questions

Lyxal

@cairdcoinheringaahing but that doesn't objectively tell me who wins

caird coinheringaahing

06:07

And because you can only post one per period, there's no benefit to killing it early

@Lyxal Whoever has posted the most answers when the challenge dies

Lyxal

@cairdcoinheringaahing i see

hey why don't we give it a go here

like a test run

and the increments could be 2 minutes

caird coinheringaahing

Well, I bring it up because I wanted at least one other input before I decided to write up a Sandbox post

Lyxal

I like the sound of it

caird coinheringaahing

The only thing I need now is the "task" that every answer has to do

@Lyxal The chat room isn't very active, I doubt it'll work :(

Lyxal

discord then?

Razetime

06:10

@Lyxal same problem

caird coinheringaahing

I was thinking that each answer posts a task or a restriction, and the new answers have to choose one of the tasks and one of the restrictions, with no two answers choosing identical ones

Razetime

ok

so lets say

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Prefix divisibility Inspiration Given a positive integer \$1 \le n \le 9\$, output all positive \$n\$-digit integers \$i\$ for which the following is true: Each digit from \$1\$ to \$n\$ appears exactly once in \$i\$ \$i\$ is divisible by \$n\$ Removing the rightmost digit from \$i\$ yields anot...

Razetime

the restrictions accumulate

so you can choose any number of restrictions

and based on that you get more points

or something like that

Lyxal

@Razetime hmm no

that'd be a dupe of those ones where restrictions accumulate

all that'd be different is time

Razetime

06:13

just throwing ideas around

caird coinheringaahing

How about the new answers can pick between 1 and all the previous group's restrictions, and they get a point for each one

If you choose 5 restrictions, you get 5 points etc.

Razetime

yeah that's what I was thinking

caird coinheringaahing

it would encourage more answers and you can decide exactly how difficult you want it to be

Lyxal

06:32

uh this is embarrassing but uh

today i realised i forgot to put the space character in my esolang's codepage file

so uh don't do that

New Sandboxed Posts

07:00

0

A: Sandbox for Proposed Challenges

Quickly! Group together! This challenge will function somewhat like an answer-chaining question, in that new answers will (somewhat) depend on old answers. However, this is (as far as I can tell) a unique form of answer-chaining, so be sure to read the entire challenge if you'd like to take part....

caird coinheringaahing

Thoughts on this? I think it's fully doable given enough time, but I'm not sure if a month is "enough time". I'll settle for doing it next year, but it'd be cool if we could arrange it this year

Lyxal

07:16

@cairdcoinheringaahing but we're already sandboxing 25 challenges for this year

caird coinheringaahing

@Lyxal Well, you and HN are. Doesn't stop us from cleaning up the Sandbox (even a little) and posting something Christmas-y (especially as this would be community based)

Lyxal

Okey doke then

dzaima

07:31

@Razetime they're just a 0×0 canvas object. shouldn't be anything special

2x-1

08:05

@cairdcoinheringaahing 1) Are we allowed to output to somewhere in the hardware memory? 2) Is a separator mandatory between lines of the table?

caird coinheringaahing

@2x-1 Any kind of 2D array/grid/whatever works and I have no idea for 1)

If it's site allowed, then sure

2x-1

@cairdcoinheringaahing Can the output be flattened?

caird coinheringaahing

@2x-1 No

Lyxal

10:45

TIL: chat.stackexchange.com/transcript/44177

John Dvorak

13:29

TIL that out of 12k questions on the site, 10k have been tagged code-golf

caird coinheringaahing

15:44

Any feedback?

New Main Posts

16:53

0

Q: Bi-directional translator

Bi-directional translator The challenge is to create a translator that can translate a [a-zA-Z ] string into another string according to the mappings below. The translator should also be able to translate translated text back into its normal form (hence bi-directional). Case doesn't have to be ma...

code-golf string

ais523

21:11

@Razetime I think it's timed out, but it's not frozen yet, there's no Incident answer

I created Incident the last time I saw that sort of answer-chaining question get stuck, to ensure that (until Incident was used again) it would always be possible to continue

but, I'm not particularly sure I want to continue it myself because I'm not sure what sort of restriction would be fun to continue with, and you need knowledge of all the previous answers to write a new one

also I was worried it might be too early, but at least the low unique-byte counts have been done already

actually, screw it, if I can write this program I'll submit it

(Incident answers take a while to write, though)

(it's one of those puzzle esolangs that's intentionally hard to program in)

ais523

21:45

oh gah, I've been writing this program in UTF-8 and then realised the example is using a weird codepage

what character encoding has € at codepoint 156?

looks like some CP437 variant, I couldn't figure out which one

anyway, let's try to submit this

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Wuxings in Positive Action Background Wuxings(五行) are the five "elements" in Chinese philosophy. They are Fire(火), Water(水), Wood(木), Metal(金), and Soil(土). You can find them on East Asian calendar, where some days (Tuesday through Saturday) are named by the Wuxings. Some Korean names are given a...

Redwolf Programs

23:16

I wonder how many finite state automata would be Turning complete if you had two of them with the first's input being piped to the second's output, and vice versa.

(Or maybe not FSA, I don't know the terminology exactly. But a language that can store a bunch of different values but doesn't have the ability to move them around in a way that allows it to be TC)

ais523

two FSA connected to each other is basically equivalent to a finite state automaton + a queue

in fact, you can do that with one FSA connected to itself (assuming that it can produce output faster than it reads input)

and finite state control structure + 1 queue is enough to be TC, although I'm not sure what the probability that a randomly selected program will happen to implement a TC language is

(if you select the automaton intentionally, though, it's easy)

Redwolf Programs

Oh, that's cool.

ais523

@Razetime and it's unfrozen; make the most of this opportunity because I don't have any languages intending for unfreezing answer-chaining challenges left

@cairdcoinheringaahing it seems possible that in many languages, hardcoding the output to that may be terser than calculating it, although I'm not sure

Redwolf Programs

How do you add a page to the esolangs wiki? The only way I can figure out is to search the name then click "Create the page <name> on this wiki!", but it auto-capitalizes the name incorrectly

ais523

the first character of a page name is case-insensitive

(the other characters are case-sensitive)

you can write {{lowercase}} at the top of the page if the first character is meant to be rendered as lowercase

Redwolf Programs

23:30

Thanks!

Transcript for