The Nineteenth Byte

PyGamer0

13:18

can you <iframe> in github markdown?

Razetime

all markdown only supports a subset of html for styling text and very rarely, adding images

Recursive Co.

Using this code: `const chooseRandomChallenge = _ => {
const randomNumber = 2.5e5;
window.location.assign(`/questions/${Math.random() * randomNumber | 0}`)
};chooseRandomChallenge();` you can find a random (usually old) challenge to answer in. With enough luck, you could end up on one with no answers in your favorite language!

Razetime

this is sort of equivalent to redwolf's random question userscript

which adds a button to the page which you can spam to get a question you like

Recursive Co.

Ik

but you could also end up on an answer

Razetime

13:34

i haven't ended up on any answers from redwolf's script

Adám

Heh, people stopped doing backups when they started relying on the cloud.

Razetime

I still have some local storage I can see with my eyes just in case

PyGamer0

is apl a practical language

Recursive Co.

Annoying programming language

(jk)

Adám

People didn't need logarithms any more, once electronic calculators became mainstream.

Razetime

13:38

@PyGamer0 yes it is

PyGamer0

@Razetime where is it used?

Adám

It is used in the financial world, for production control, webservers, etc.

Recursive Co.

CMC: Given an abbreviation, output a random expanded version using a dictionary passed as input. For instance, if the abbreviation is TNB and the dictionary is [the, there, not, nineteenth, nanosecond, bread, bite, bit] then your code could output there not bread, for instance.

Adám

@PyGamer0 See apl.wiki/Case_studies

Recursive Co.

A valid expanded version is guaranteed to always exist.

Adám

13:40

@RecursiveCo. Can we take everything in matching case?

Recursive Co.

Yes

PyGamer0

wait when and how did my lang come into this list github.com/razetime/code-golf/blob/master/golflang-list.md

hyper-neutrino

I can generate the list of valid combinations with iω‘}‖}Ͽ in yuno (list on left, string on right, for each letter in the right, filter the left by falsy index - 1 (1-indexed)) but unfortunately i don't have random select built-in

Razetime

@PyGamer0 I maintain that list you know

Adám

@RecursiveCo. Can we return a list of words, or do we have to join with spaces?

Recursive Co.

13:45

List of words is fine.

Unrelated String

barely related but Ͽ is a nice character

i take it you completely ditched the kana codepage concept

Recursive Co.

Well you are the unrelated string, so posting comments about unrelated strings is encouraged when it comes to someone like you

Adám

@RecursiveCo. Dyalog APL, 18: {⍵[⊃⍤⍋⍤1?⍺∘.≠⊃¨⍵]} Try it online!

Recursive Co.

I got the nineteenth bit after running a few times

Unrelated String

@RecursiveCo. ha

Peilonrayz

13:50

@RecursiveCo. TIO doesn't use Python 3.8 ): How do you take input, is defining a function fine?

hyper-neutrino

@Peilonrayz tio.run/#python38pr

Razetime

functions are cool here

hyper-neutrino

@UnrelatedString yeah it got slightly annoying mostly because its width is different and i don't like the look of wide latin characters and also it was annoying to type

Recursive Co.

@Peilonrayz There is "python 3.8 pre release" even though we're at 3.10 by now

hyper-neutrino

granted, my new codepage is not any easier to type

Peilonrayz

13:51

@hyper-neutrino Ah, ty. I'm just blind D:

hyper-neutrino

hence why i added a character composition system to my interpreter site

Unrelated String

nice

Neil

@RecursiveCo. Charcoal, 10 bytes: Ｅη‽Φθ⁼ι§λ⁰

Adám

Do we have a challenge to replace tabs with spaces while preserving the look of tab stops every 8 chars?

Recursive Co.

14:07

not sure about this, but this is related

caird coinheringaahing

@lyxal Is this my (/Lynn's) corpus generator?

Adám

@RecursiveCo. Not at all. The main challenge here is the tab stops, not the substitution.

caird coinheringaahing

Collectives are being introduced on SO

math

@cairdcoinheringaahing that sounds good

caird coinheringaahing

It looks like they won't be expanding outside of SO unless there is corporate interest in other sites in the network

math

14:17

@cairdcoinheringaahing that doesn't sound good

caird coinheringaahing

It sounds on par for SE

math

this doesn't sound good too

Adám

@cairdcoinheringaahing But what about corporate code golf collectives?

caird coinheringaahing

@Adám If dyalog wants to set up a collective on code golf, that'd be fun

Some corporate sponsorship here might get some more attention from SE

Recursive Co.

We could create a collective for each language

Adám

14:20

We offer paid code golf workshops.

Recursive Co.

instead of having hundreds of language-specific chatrooms

@Adám how much does it cost

caird coinheringaahing

5 bytes

Adám

@RecursiveCo. £5000 for the first and £2000 for each rerun.

Recursive Co.

And what do you do in those workshops?

is it just a congregation

Adám

@RecursiveCo. We teach a bit about code golf and tips for golfing in APL, then we present problems, and then give time to solve while being on hand for questions, then we collect solutions and discuss them. Then we loop back to teaching etc. You can find materials from past workshops here and here (look for "TP3").

These were part of our IRL user meetings where individuals could pay about £1000 to participate (in the entire week of workshops and presentations), which is a bit different from a company paying for a workshop only for their people.

Razetime

14:30

prospective code golfers must be really rich to pay £1000, damn

Recursive Co.

Does anyone golf for a living?

math

@RecursiveCo. you can?

Adám

21

A: Do any of you golf for a living?

Yes, I do! I work for Dyalog. Part of my work is "spreading the word", and that officially includes code-golfs. In fact, our APL team is looking to hire, and we are more interested in golfers than regular programmers, as the former are more likely to have the right mindset. At least one active ...

Recursive Co.

I don't, but maybe someone is hired as a "Memory Saver" at a company

Adám

@RecursiveCo. Actually, my when father worked for IBM, they needed to translate between two character sets, but there wasn't enough memory for both tables while also holding the application code (this was way back then!), so the asked my father to golf the translation code.

Recursive Co.

14:34

Wow, nice use case! Sad (?) computers have a larger capacity so we no longer have to golf

> Rodrigo stumbled on APL by accident in early 2020, as he posted programming challenges in an online code golf community. APL's simplicity, brevity, and affinity with mathematics got him hooked. Now Rodrigo is exercising his passions for teaching, programming, and mathematics, in an attempt to get many new people interested in APL.

on the dyalog website

ngn

@Anush hi. i had another look at this and i think you have a bug in the solution you use to check correctness: shouldn't cumweight+weight-capacity be capacity-cumweight?

user

@Adám Was it in APL?

Adám

I don't think so.

Jun 3 at 19:39, by Adám

Official document from my work:

Jun 3 at 19:39, by Adám

I'll add this document snippet to the meta post.

user

15:08

SO has a new design for badges on your profile page, apparently

caird coinheringaahing

Those are actually kinda nice

pxeger

why is that censored?

hyper-neutrino

ooh, nice. also i can still tell what most of those badges say

pxeger

~~Also it doesn't show up for me. shouldiblamecaching.com?~~ oh it's only on SO

hyper-neutrino

or maybe not most, but several

user

15:10

@pxeger Nah, just didn't want to show y'all my badges. My sock doesn't have any gold or silver badges (and it doesn't have an SO account) :P

@hyper-neutrino ಠ_ಠ

caird coinheringaahing

Doesn't look like its been mentioned on MSO

Adám

@user Where is that?

hyper-neutrino

on the Profile tab

user

Only on SO

hyper-neutrino

only for SO Public Q&A

Adám

15:11

OIC

Strange. I thought they had unified the design of all sites. \○/

pxeger

well that clearly isn't the case: SO is the only one with a dark theme, for instance

user

@Adám Perhaps it's in beta?

pxeger

A/B testing?

Adám

Heh, your gold badge is much larger if you don't have any.

pxeger

status-norepro

Aaron Miller

15:16

I have the new badge design. status-repro

user

@AaronMiller I think pxeger meant Adam's comment

Aaron Miller

oh

pxeger

indeed I did

Aaron Miller

lol

caird coinheringaahing

Asked on MSO

user

15:19

And on MSE

felipa

some upvotes but still no answers....

caird coinheringaahing

ಠ_ಠ Someone vtced it as "Needs details or clarity"

hyper-neutrino

lol

caird coinheringaahing

What details would you like me to add? If you have eyeballs, you can see what I'm asking about ಠ_ಠ

felipa

i fear the Jelly/K answers :)

hyper-neutrino

15:25

wait, you can't browse the front page of SO without an account anymore?

Recursive Co.

No, just entered by accident. But might learn APL someday.

caird coinheringaahing

@cairdcoinheringaahing Ugh, I'm remembering why I hate SO/MSO ಠ_ಠ

hyper-neutrino

@RecursiveCo. wrong room perhaps?

Recursive Co.

Yes, wrong room

hyper-neutrino

granted most people who use SO without an account probably have a specific thing to look for and aren't just there to scroll through things

Recursive Co.

15:27

@cairdcoinheringaahing "Welcome to Meta Stack Overflow!"

hyper-neutrino

@cairdcoinheringaahing what's the question - is it asking when other sites will get the design too?

cuz "is there a new UI" can't possibly be the question because, well, it's quite obviously there :p

IK meta posts don't necessarily need to be questions, but ¯\_(ツ)_/¯

caird coinheringaahing

@hyper-neutrino "This has changed. There has been no announcement of the change. Mind explaining?" I thought that'd be implied but obvious

rak1507

@Adám in the future when things open up again have dyalog ever thought about either making conferences free or much much cheaper? might result in a lot more people going

Adám

@felipa Why specifically Jelly and K?

felipa

@Adám I guess I am afraid of APL too :)

totallyhuman

15:29

@hyper-neutrino while the main page is just a massive advertisement, you can still go to the questions page

Adám

@rak1507 Our conferences are actually at cost price.

hyper-neutrino

@cairdcoinheringaahing probably will take a while; announcements tend to trail behind the updates :p

@totallyhuman ik, i was mentioning specifically the front page https://stackoverflow.com/

Adám

@felipa Why?

hyper-neutrino

at least they fixed this :P

pxeger

It costs a lot more to run a conference than the number you probably have in your head right now

rak1507

15:30

@Adám what about without accommodation + food though

caird coinheringaahing

@hyper-neutrino Yeah, I'm not expecting the design team to see my question and drop everything, but it does mean there is now a place for the explanation

hyper-neutrino

If they post an official announcement and dupe-close yours into it that'd make sense but... details and clarity?

especially with no accompanying comment?

SO.exe

felipa

@Adám I am just being fun but I can't understand a word/byte of those languages

user

Bold of you to assume us elite SO users use Windows /s

hyper-neutrino

SO.sh

Adám

15:31

@felipa We can fix that.

pxeger

@hyper-neutrino click the hamburger menu button

felipa

@Adám by rewriting in modula-3?

hyper-neutrino

@felipa TBH i have an easier time understanding APL code than really well golfed + compressed JS code lol

2

and Jelly code even more than APL code

felipa

@hyper-neutrino fair point

Adám

@felipa By teaching you Jelly, K, and APL.

felipa

15:32

@Adám first I need to get really good at julia and rust

hyper-neutrino

@pxeger yes ik - i was specifically referring to the front page itself

rak1507

@hyper-neutrino probably because most APL code isn't all that well golfed (or doesn't use as many 'tricks'), bc the language is concise in the first place

caird coinheringaahing

@hyper-neutrino Also, asking "questions" that point out changes isn't exactly an uncommon thing on MSE/MSO

hyper-neutrino

@rak1507 true

pxeger

@hyper-neutrino ?? that is the front page?

stackoverflow.com

hyper-neutrino

15:33

@pxeger yeah you can't browse the front page because the whole thing is just an ad, but you can browse the questions page. that's what i meant

pxeger

ok

Adám

@hyper-neutrino Did you mean not-golfed APL code vs… or golfed APL code vs…?

hyper-neutrino

like i don't see a page like this (minus the teams part ofc)

Adám

@hyper-neutrino Ooh, our first look at SE through the eyes of a mod.

hyper-neutrino

@Adám well, even with golfed APL code, it's easier for me to just pick it apart step-by-step, usually mostly getting stuck on interpreting trains until recently :P

whereas with JS i see the whole thing and am just like "...what?"

Adám

15:35

@rak1507 ^^

caird coinheringaahing

@hyper-neutrino Anything interesting going on in the Stack Mods team?

rak1507

yeah fair enough

user

@Adám Doesn't look too different than from someone in a Team would see

hyper-neutrino

keep in mind, it's not even like i never use JS at all and don't get it at all - i've written over a thousand (non blank) LOC of JS in the past few days

Adám

@hyper-neutrino Right, the difference between golfed and production APL is much less than between golfed and production JS.

Recursive Co.

15:36

@Adám Looks cool. Maybe I should run for moderator.

hyper-neutrino

@cairdcoinheringaahing yes, we are discussing the dutch take-over of the world

@RecursiveCo. or just make a team lol

Recursive Co.

I have never heard the term "run for moderator" being used ever.

hyper-neutrino

@Adám yeah - true.

caird coinheringaahing

@hyper-neutrino Ah, how's that going?

Adám

@RecursiveCo. There are elections now and then.

Recursive Co.

15:37

I know, but I've never heard anyone say "run for moderator"

hyper-neutrino

@RecursiveCo. contains many instances of "run for mod"

user

@cairdcoinheringaahing Het gaat helemaal niet goed, over de Nederlanders hoef je je geen zorgen te maken.

hyper-neutrino

run for [candidacy, etc] is pretty common at least from what i have heard

user

@user Er, I meant that it's not going well at all and you don't have to worry about the Dutch

Adám

@user I can almost understand that.

Recursive Co.

15:38

user

@Adám Leuk, spreek je Nederlands?

hyper-neutrino

@RecursiveCo. well just ctrl-f "run"

Recursive Co.

@user Oh, so that's why you wanted to make the Indonesian challenge. You were from the Netherlands, and you wanted to take control of Indonesia like they did 300 years ago

user

lol

Adám

@user No, but I know 4 other very similar languages, so…

user

15:39

Danish?

Recursive Co.

"Deutsch"

caird coinheringaahing

@user Good, good. I can't wait for the mandatory stroopwaffels to be a thing :P

Adám

@user Danish, Swedish, English, and Jewish German.

user

stroopwaffels > waffles > ... > garbage > pancakes

Recursive Co.

Jewish German is a language? What's different about it? Curious now.

pxeger

15:40

Jewish German? How does that differ from standard German?

ninja'd

caird coinheringaahing

There's no pork involved

Recursive Co.

or sausages

or pork sausages for that matter

ngn

or beer

pxeger

@RecursiveCo. sausages are not inherently non-Kosher unless they contain pork (or other stuff that's non-Kosher), are they?

New Posts

0

Q: Give me odd, even, square, cube, prime and composite 3-digit numbers

Given a string which is guaranteed to be either "odd", "even", "square", "cube", "prime" or "composite", your program or function must return an integer \$100\le N\le 999\$ which meets this description. Rules Your code must be deterministic. The choice of the integers is up to you. However, the ...

hyper-neutrino

15:43

there's some sum(map(ord(x))%somethingweird%somethingelse that solves this in like 20 bytes isn't there

rak1507

lmao

totallyhuman

@NewPosts this is gonna be a lot of hardcoded answers and then one genius with some weird algorithm to turn the words into the right numbers

pxeger

@hyper-neutrino Arnauld wouldn't have posted it otherwise ;)

hyper-neutrino

:D

rak1507

the hard ones are 'cube' and 'square'

because there are way less of them than any other

totallyhuman

15:45

is it even worth submitting a hardcoded answer

aaa

hyper-neutrino

i would say no. at least, i personally would not ¯\_(ツ)_/¯

totallyhuman

you can go full enklact with the second character of each

Adám

@RecursiveCo. @pxeger en.wikipedia.org/wiki/Yiddish

pxeger

I've never heard Yiddish called Jewish German before. Was that you just calling it that in case we didn't know what Yiddish was (or that it was linguistically close to Dutch)?

rak1507

@totallyhuman yeah, magic formula using the second char seems plausable

interesting 8+ord(second char) gives 121 for square, and 125 for cube

all the others are wrong though, so ¯\_(⍨)_/¯

Adám

15:49

@pxeger In the article, it says Yidish-Taytsh which is literally "Jewish-German" in the language itself. "Taytsh"≈"Deutch"

pxeger

oh, I never knew that

interesting

totallyhuman

ah well

Adám

It is commonly abbreviated to just "Jewish" (i.e. "Yiddish"), but only because of context. The same word is used to mean "Jewish" in the common English sense too, and there are Jewish versions of other languages too.

totallyhuman

a rather trivial algorithm has been found

rak1507

I expect all the rest will just port that

totallyhuman

15:51

yeah...

Adám

E.g. Jewish Latin (actually Spanish) is called "Ladino"≈"Latina".

totallyhuman

nice set of numbers though

i wonder how they found it

ngn

probably tested many and got lucky

Recursive Co.

I can confirm that.

Basically wrote a few short for loops in JavaScript, then found that 121 had a cube 4 places away. Then found that 127 was prime, and the rest, well, easy.

Unrelated String

yep

caird coinheringaahing

15:56

There's gonna be some clever usages of ḥ by Jonathan, I just know it :/

Unrelated String

somehow

totallyhuman

there's probably no shorter approach but maybe there will be more interesting ones soon enough

Recursive Co.

Maybe if Arnauld allows numbers outside [100,1000]

Oh wow, those upvotes came in really quickly. 5 of them in 8 minutes.

Unrelated String

I feel like the range limitation was specifically to disallow something like this

which is not especially interesting

Adám

@RecursiveCo. No, restrict it to [1,100]

rak1507

15:59

are there list literals in jelly?

pxeger

good question

caird coinheringaahing

@rak1507 Yes

rak1507

helpful :P

Recursive Co.

How do they look like?

caird coinheringaahing

1,2,3,4

Unrelated String

16:01

they can have brackets around them but it never comes up

also for integers within the range [0 .. 250] (?) there's a string terminator

totallyhuman

16:16

@totallyhuman scratch that, ovs found an actually shorter approach

rak1507

@totallyhuman python specific magic formula

boring

Recursive Co.

@totallyhuman Indeed. The challenge is not that boring after all

rak1507

I feel like posting an md5 hash is not actually a solution

caird coinheringaahing

I'm brute forcing a Jelly hash solution, but it might take a while

@rak1507 Its better than posting a spoiler solution this early on

rak1507

maybe as an edit to the post not an actual answer

Recursive Co.

16:21

Hi @user16117347

pxeger

@rak1507 I think it should be a comment for now, personally

hyper-neutrino

the "convert to comment" feature causes some weird things to happen with markdown (granted, most things that get converted to comments are just a line or two of plaintext without formatting)

Recursive Co.

Well, Arnauld deleted his answer

hyper-neutrino

No, I converted it to a comment

Adám

@hyper-neutrino Where is the comment?

hyper-neutrino

16:33

Arnauld deleted it :P

SlamJammington

I've never had to use that, since PHP doesn't have a "comment" data type

ba dum tissss

felipa

17:29

is anyone here working on the knapsack question?

ngn

@felipa this? anush might be

xash

18:13

Huh, did I misremember that there was a meta-consensus about taking strings as codepoints?

caird coinheringaahing

18:34

@xash You may be thinking of this, which allows numbers to be input/output as characters, not the other way around

felipa

hi

StackMeter

sup

anyone know how to sort in O(n) time

hyper-neutrino

not possible if you mean just "take any random list and produce those elements ordered by some comparator"

StackMeter

no just to sort a list by its numeric value

for example: [4, 2, -1, -3] -> [-3, -1, 2, 4]

hyper-neutrino

that's... what i mean

"less than" is a comparator

Anush

18:41

how do you find when you were pinged in the chat?

hyper-neutrino

and no, that is not possible (to sort in linear time)

Anush

@ngn it should be return ((capacity-cumweight)/weight)*(density*weight) + cumprofit

Adám

@Anush What?

ngn

@Anush you can still cancel the weight-s

StackMeter

@felipa me

hyper-neutrino

18:44

@Anush if you go to https://chat.stackexchange.com/users/<your-id>/?tab=replies you should be able to

just go to chat.stackexchange.com and click you name in the topright and click "replies"

StackMeter

@felipa there is no sort that works on an indefinite list in O(n) time

you need at least O(n log n)

hyper-neutrino

yes, but this challenge doesn't require a sort

or at least, not "sort the whole list" which is linear log

xash

@cairdcoinheringaahing That was probably it, cheers!

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