The Nineteenth Byte

user

00:09

@Bubbler Tiny example, although I'm not sure this is what you meant

ngn

@user i gave you mine tomorrow

10

lyxal

^ right there is the funniest thing I've seen all day

granted I've only been seeing things for 2 hours, so it might be surpassed later on

user

Oh I'm so sorry you had such a terrible day (/s, I think it's funny too)

lyxal

@user well it's easy to be the first king on the hill. staying the king of the hill is a whole lot more harder ;p

OldSandboxPosts

01:00

Sandbox posts last active a week ago: Implement the ordering monoid, Modify to Increment: Javascript Edition (WIP), Sandbox Notes, Create word lightning [ascii-art] [string] [tree]

Sandbox posts last active a week ago: Meta-golf Branch integers without alphanumeric characters [metagolf]

caird coinheringaahing

01:44

CMC: Until someone decided to upvote me a few minutes ago, my rep (33668) was an anagram of my user ID (66833). Give an integer representing the user ID of a CGCC user, output whether their current rep is an anagram of their ID or not

Unrelated String

~~sorry~~

caird coinheringaahing

Also, I just realised I have 35k, not 33k. Ignore the first sentence :P

@UnrelatedString It's no problem, I forgot how much rep I have :P

Unrelated String

lol

caird coinheringaahing

Also, I should be asleep now, so I'll implement your golfs when it's a reasonable time for me :P

Unrelated String

gives me time to maybe get rid of the third filter at the end 😈

well I think I thought of a way to make it shorter at least

maybe

yeah no

shaved one byte off but only if there's no pair of pairs of twin primes without an isolated prime between them

okay regardless of that it fails for n = 5

which is not a test case that is elaborated on in the body of the challenge, but only in the comments, naturally

Redwolf Programs

03:39

Ugh apparently putting my laptop in my backpack just magically causes the SSD to disappear for a few hours :(

Probably just moisture, but it's kind of worrying me

hyper-neutrino

what if you hold your laptop vertically and shake it without putting it in your backpack

Redwolf Programs

Wait it's working now

Running a memory test seems to fix it, bizarrely

hyper-neutrino

huh

schroedinger's SSD

Redwolf Programs

It might have to do with the fact that it actually does work, so that causes it to run the fans for a second and remove any moisture

Wait now it's just sitting there and not booting or doing anything at all

halp

Did the SSD disconnect again mid-boot?

hyper-neutrino

have you tried microwaving it in rice /s

Redwolf Programs

03:43

Disadvantage of having a waterproof backpack: It keeps the water in

I just felt and it's slightly moist in there

hyper-neutrino

wait so it failed to keep the water out

and now is keeping the water in

Redwolf Programs

Probably let a bit in given that I walked through super heavy rain

If it shorted something out and deleted my SSD contents or something like that I'm just going to throw it out the window and follow it down lol

hyper-neutrino

are you able to flip your backpack inside out (by the computer compartment) and like hang it outside or smth

Razetime

@hyper-neutrino *boiling

hyper-neutrino

D:

Redwolf Programs

03:45

I hear putting your laptop in a rice cooker is the preferred method

hyper-neutrino

well of course, a rice cooker is the only way to boil rice /s

lyxal

you're missing the obvious way of boiling rice

put it inside glass kettle

ez

Redwolf Programs

The rice is just to add nutritional content to your laptop

I usually add some thermal paste for flavor

lyxal

does boiling the laptop help?

hyper-neutrino

if your laptop is failing to start up then add rice

starch it up to start it up

5

Redwolf Programs

03:47

Propped my backpack and laptop sleeve open with some sticks, hopefully they'll air out

hyper-neutrino

@lyxal well it evaporates the water, so it'd fix the water damage

Redwolf Programs

I usually soak it in something that repels water, like liquid butter

lyxal

@RedwolfPrograms 0/10 should have put the bag (and laptop) in an oven

@RedwolfPrograms I was about to suggest using oil but remembered you're american

Redwolf Programs

I deep fried my laptop y'all

Time to bring it to the county fair

And shoot it

lyxal

America:tm:

also just in case you didn't know I've returned to sus

hyper-neutrino

03:49

that's kinda sus bro

lyxal

yes

Redwolf Programs

I have no idea whether I should be more or less concerned about my laptop (evidently) detecting a hard drive but still not booting

lyxal

oh this is wonderful: it's 2021, we have an assignment brief titled "Software - 2020.docx" and the due date is in 2019

Redwolf Programs

If my SSD failed I'm going to be very disappointed

hyper-neutrino

better get that time machine from ngn

lyxal

03:52

@lyxal this suggests last year's students were also hopelessly late

Redwolf Programs

Okay we're back to no boot device found.

lyxal

@RedwolfPrograms that's because you need a shoe computer

or a solid shoe drive

that way, it will have a boot decive

*device

Newly Featured Questions

36

Q: Draw an hourglass

Again inspired by a task for Programming 101 here's another challenge. Input: A positive integer n >= 3. (has to be odd) Output: n lines of asterisks, where the first line has n asterisks and every new line has two asterisks less than the line before. Until hitting 1 asterisk. From there e...

23

Q: Old Spanish alphabetical order

Before 1994, Spanish dictionaries used alphabetical order with a peculiarity: digraphs ll and ch were considered as if they were single letters. ch immediately followed c , and ll immediately followed l. Adding the letter ñ, which follows n in Spanish, the order was then: a, b, c, ch, d, e, f, g,...

code-golf string sorting

lyxal

oh hey NFQ actually doing good for once

@RedwolfPrograms you should check out metasmoke/charcoal HQ. I think you'd like reviewing spam network wide

hyper-neutrino

it's seen the foreshadowed fate of its friends and is working hard to avoid the same demise

Redwolf Programs

03:55

@lyxal I'll check that out.

Can't any time in the next few days though.

Speaking of that, I'll probably be offline most of the next few days

I seriously hope that laptop works tomorrow morning

Razetime

@hyper-neutrino how would yuno do on this

hyper-neutrino

probably not very well; I don't think there's a good way to like string substitute or anything yet

Razetime

split on ;, get lengths, convert from codepoint

hyper-neutrino

actually could I copy Jonathan's jelly idea? i have split / split on sublist and count / auto-semi-vectorize count

source code could contain non ;# though

Razetime

but the thing is whether yuno has ascii alphabet in codepage

hyper-neutrino

04:01

it does not but it auto-maps its codepage to ascii

Razetime

so ascii is multibyte but you can still use ascii

hyper-neutrino

for example 「か」becomes "ka" (my commands.txt lists everything in katakana but the interpreter accepts either)

well if you have ascii in the code it will just automatically attempt to figure out what it means

Razetime

nice

hyper-neutrino

i have a full mapping of katakana to ascii here

Razetime

i like that ease of use idea a lot

I know katakana, is it an exact romaji translation or are there changes?

hyper-neutrino

04:03

some are exact, some map to common english digraphs/trigraphs, some are special like

」あ is the uppercase alphabet

」お is "Hello, World!"

also, some are used for symbols like ちゃ is / since full-width slash isn't in the codepage

also, since i anticipate "an" to be more common than "nya" i remapped にゃ

Bubbler

Time to write a challenge about cats meowing in Japanese

hyper-neutrino

:(

Razetime

@hyper-neutrino oh sort of related to frequency of use

hyper-neutrino

i mean i could just as well do ｎや it'd just take an extra byte

@Razetime sort of. idrk my though process behind it

all the regular sokuon ones are just turned to romaji directly

Bubbler

How about nyan cat lyrics

hyper-neutrino

04:12

idk if they'd really be that common...

@Bubbler ｎやｎ or ｎｙにゃ could work fine

brb adding a mapping for nyan

Bubbler

ｎｙにゃ sounds cursed

hyper-neutrino

yes

@bobble shotgun axes sound cool. where can i get one of those? :P

Razetime

@Bubbler might be wortha cmc

just the first stnza

bobble

@hyper-neutrino watch SHIELD :) marvelcinematicuniverse.fandom.com/wiki/Shotgun-Axe

hyper-neutrino

I'll put that on my watch list :P (right after creating said list)

bobble

04:15

The idea is you shoot them with the shotgun while getting closer, then axe them over the head. I think.

lyxal

Bruh how you gonna put a movie onto a list of watches?

doesn't make sense

bobble

Ain't a movie, 'tis a TV show

hyper-neutrino

because I didn't add a template to my List so it just accepts objects, and as long as I don't attempt to cast (Watch) it'll be fine

@bobble i feel like shooting them once you're within melee range would still be easier though?

actually maybe not. not familiar with the logistics of murder

lyxal

you helped murder my rep this month ;p

bobble

The basic idea is that you can both axe someone and shoot them, so why not combine both into one weapon?

hyper-neutrino

04:18

@lyxal oops

@bobble true. though now you can't throw your axe and still have a weapon :P but it sounds and looks cool so why not lol

lyxal

@hyper-neutrino enchant it with loyalty obv

bobble

Well, once the shotgun is out of ammo you can still axe them

hyper-neutrino

true

bobble

Am I getting put on some watchlist?

hyper-neutrino

set a timer on the trigger so after you throw the axe the shotgun fires and the recoil brings it back

bobble

04:19

(not your watch List)

hyper-neutrino

TNB is probably always on some sort of watchlist

bobble

> "I don't get it. Doesn't the axe make it harder to shoot?"
"It makes it easier to chop heads off."

hyper-neutrino

i guess there's also the fact that shotguns and axes serve different purposes outside of killing, like it's probably not great to chop down a tree with a shotgun

bobble

If you shoot a skinny enough tree trunk enough times, it would probably fall down

hyper-neutrino

only one way to find out

A username

04:24

Hi

bobble

elaborate curtsey, trips and faceplants

3

Unrelated String

@hyper-neutrino ~~but what if you need to link to anime torrents~~

hyper-neutrino

what

i believe i am missing something here

Unrelated String

pretend i said nothing

Redwolf Programs

Haven't shot at a tree with a shotgun, but having done it with some others it's probably not a very effective technique

hyper-neutrino

04:27

wdym pretend you said nothing, you haven't sent any messages here in the past 2 hours </ funny and original joke>

i haven't shot any trees so i cannot attest to the effectiveness of such an approach

A username

Don't look at my rep. Or change it.

Redwolf Programs

Just 5600 away from an extra funny number :D

bobble

I can attest that shooting water guns at a stick planted in the sand will knock the stick over. Also make the sand wet. And stick to everything. And parents mad at wasting so much water.

hyper-neutrino

i don't like sand

bobble

how about high ground

A username

04:33

@Ausername Good, someone fixed it.

hyper-neutrino

i don't have it unfortunately, but do not underestimate my power

Razetime

@hyper-neutrino have you heard of the shotgun guitar

A username

@Razetime That is a terrible idea.

Razetime

Excuse me it is the greatest thing ever

hyper-neutrino

i have not. can you play funky tunes while murdering someone

Razetime

04:35

and it's in FLCL

@hyper-neutrino absolutely

hyper-neutrino

beautiful, sign me up

Redwolf Programs

Shotguns have many more uses than just boring old murder you know

Razetime

like destroying demons

Redwolf Programs

Or cooking

Razetime

what

Redwolf Programs

04:37

Very tender steaks

Razetime

is there some special texan dish which involves shotgun shells

Unrelated String

probably

hyper-neutrino

a 'murican specialty

Redwolf Programs

@Razetime How'd you find out what the secret ingredient in my chili is?!

A username

Canada is part of America tho

(North America)

(The continent)

bobble

04:38

whoever decided that us 'muricans had to share a continent with other people

Unrelated String

on that tangent the unironic core of my chili recipes is carrot and soy sauce

hyper-neutrino

a machine gun shoots a lot of things one by one. a shotgun shoots a lot of things at once

Razetime

@RedwolfPrograms it's not secret if telugu people use it :P

hyper-neutrino

a shotgun is just an async machine gun

8

A username

import multithreading lets you shoot multiple things at once.

Unrelated String

04:39

@Razetime is this something to do with "gunpowder" spice

bobble

45

Q: Shotgun Numbers

The Shotgun numbers are a sequence with a rather simple definition but some interesting structure. Start with the natural numbers: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, ... Now take all numbers at indices divisible by 2, group them into pairs, and swap the numb...

code-golf number sequence permutations

Redwolf Programs

For some reason there's a shotgun round next to the printer downstairs. Never bothered to ask why.

bobble

there's a number sequence golf for "shotgun numbers" because of course there is

Unrelated String

more like why not

Razetime

martin ender has the best sequence challenges

hyper-neutrino

04:41

@RedwolfPrograms what if the printer starts sending your data to the government

gotta always keep yourself protected

A username

@hyper-neutrino Fortunately it can only send as fast as it can print

Right now it's trying to understand your Javascript.

bobble

is such a feat possible?

hyper-neutrino

"understanding Javascript" is a bit of an oxymoron

A username

Probably not.

Redwolf Programs

I can read JS about as fluently as English when it's written by someone reasonable

bobble

04:47

how many reasonable people exist?

Redwolf Programs

1

hyper-neutrino

it's me, obviously

A username

@RedwolfPrograms You call this reasonable?

You know, there's a whole site for making your code more readable.

Redwolf Programs

That is bad JS

I wrote it in a hurry

Both from a golfing standpoint and a readability standpoint

Very well golfed JS is actually more readable than half-golfed JS

A username

Really?

Bubbler

04:49

[citation needed]

Redwolf Programs

Ever seen an Arnauld/xnor/Neil/tsh/... answer, compared to one from like four years prior?

The recursion and stuff is much easier to follow than all the weird for loop tricks

A username

Not for me...

Redwolf Programs

Sounds like you need more practice at getting outgolfed and trying to figure out how on earth it's 20% shorter

A username

I try, but recursion is a pain.

hyper-neutrino

recursive solutions actually intuitively make more sense

Redwolf Programs

04:53

Recursion is fun

hyper-neutrino

for me, most of the time

i mean, you define fib as "sum of last two", not "take 1 and 1 and keep replacing the first with the second and the second with the sum N times"

Redwolf Programs

For loops suck when you use them in any way other than i = 0; i < x; i++ or similar

hyper-neutrino

just one is more efficient without TCO, and one is more intuitive

for loops are just compacted while loops tho

so they're alright. i still like recursion better

Bubbler

Recursion is about identifying and exploiting subproblems

A username

I just use recursion as a shorter alternative to loops/

hyper-neutrino

04:56

i have a bit of practice finding the appropriate recursive relation a) from doing DP problems and b) because i still don't know how to loop in racket/scheme if there is even a way, so i had to learn how to recurse with accumulators to use TCO properly instead (for my CS courses)

A username

@RedwolfPrograms Btw, if you can show me how this takes input, I have some ideas on how to golf it.

Redwolf Programs

I...I honestly have no clue

A username

When you don't understand your own code

Bubbler

05:19

So there was a golf question on Mathematica SE, which would have been closed as unclear here :P

hyper-neutrino

lol, mathematica has a code-golf tag with 8 questions? nice :P

Graphics[Interpreter["Character"]["yin yang symbol"]["Glyph"]]

and of course, the built-in, because mathematica

Razetime

05:37

@bobble this has too few answers for a question with a defined recursive formula

we need to get on this quick

A username

05:51

What should I do about this?

Bubbler

@Ausername Just wait until enough opinions are gathered (via votes or answers)

A username

It's just being ignored though, aside from several upvotes.

No one has an opinion really, but no one disagrees...

Bubbler

If it accumulates more upvotes then some high-rep user (power user?) will hopefully address it

A username

Ok.

Bubbler

(Properly using CGCC.SE requires patience in multiple places. And you can always ask for more feedback by regularly bringing it to chat)

hyper-neutrino

05:59

I keep forgetting about it. I've upvoted it but I typically will wait for more feedback on non-urgent stuff like this

(it hasn't been a week yet; getting stuff done within 2 weeks on SE is already quite impressive, lol)

Razetime

Honestly i think it's about as useful as an xkcd tag

A username

06:37

True, but xkcd isn't a language.

hyper-neutrino

I don't think minecraft is either

Adám

A username

Ugh.

hyper-neutrino

makes more sense than JS /s

A username

@hyper-neutrino There are about fifty answers that disagree with you

@hyper-neutrino Hey!

Adám

06:40

We should have an "implement the XKCD programming language" challenge.

lyxal

@Adám I mean [1, 2, 3] + 2 => False and [1, 2, 3] + 4 => True kind of make sense. + would be acting as a "does not contain" operator

A username

@Adám Really no.

2+2 = Done?

lyxal

@Ausername [1]

A username

[1]?

hyper-neutrino

oh I thought it'd be called Minecraft Command / Command Block or something like that

lyxal

06:41

@Ausername 2 + "2"

hyper-neutrino

then again idk if there have been like schematic submissions

lyxal

@Ausername 2 + 2 has already been calculated, so why do it again?

A username

@hyper-neutrino There are pure redstone as well.

@lyxal Ummm....

hyper-neutrino

in that case, the other point is then that questions to be tagged minecraft aren't about the minecraft language but rather some aspect of the game

Adám

It is all explained.

hyper-neutrino

06:42

idk though. gonna wait for more feedback before offering more specific feedback myself if any

Adám

@lyxal No, it basically means 2+=2

Razetime

@Adám isn't that just deadfish

A username

Sure whatever

Adám

@Razetime How so?

Razetime

it uses the commands xkcd right

or is this another language which was specified in an xkcd comic

Adám

06:45

That.

pxeger

6 mins ago, by Adám

Razetime

oh well

this is just javascript

hyper-neutrino

i think the tag makes more sense than xkcd. i definitely think xkcd shouldn't be a tag but i'm unsure (leaning towards yes) for minecraft tag

Adám

@Razetime No, but clearly related.

A username

@Razetime How dare you!

Javascript's not that bad.

Bubbler

06:46

@Razetime It's more like aviascrjpt

Razetime

@Bubbler js for birds?

I dig it

lyxal

@Ausername yes it actually is

@Razetime what about js for bees? Apioscript?

A username

@lyxal Python's indent sensitive

lyxal

@Ausername javascript destroys the souls of many.

A username

And is useless for expressions

hyper-neutrino

06:47

oh no, i have to format my code reasonably

Razetime

@Ausername what?

A username

@lyxal How

lyxal

@Ausername I mean, look at redwolf. Observe the impacts JS has had on him and tell me JS isn't bad. ;p

A username

@Razetime Ok, how do you filter items out of an array (Rarr list) in Python?

lyxal

filter

Razetime

06:48

not a fan of python's indentation thing but it's probably the most flexible language ever

A username

@lyxal Redwolf is fine.

lyxal

@Ausername you're just as inflicted by the curse of JS then

Razetime

no fine person likes chromebooks

4

lyxal

^

A username

I give up, I'm losing this conversation.

lyxal

06:49

you're not losing this conversation, you're A username

A username

Ugh

lyxal

if you're gonna surrender, at least get your facts right

;p

A username

I'm not gonna surrender, I'm A username

I will strategically retreat from TNB.

Bye

lyxal

We did it fam we won.

A username

07:04

What happened to E man?

@Wasif I don't understand why that got a lot of stars, but as long as this does, I'm fine.

lyxal

@Ausername I returned to sus

lyxal

07:37

note that E is marked as "wrong" while sus is marked as "right"

therefore, sus over E

StackMeter

so susE

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Calculate \$ \lfloor n \log_2(n) \rfloor \$, exactly code-golf math Given an integer \$ 2 \le n \$, you need to calculate \$ \lfloor n \log_2(n) \rfloor \$, assuming all integers in your language are unbounded. However, you may not ignore floating-point errors - for example, in python lambda n:in...

StackMeter

oh we're calling JS bad

have you heard of JS but only 6 characters

those being []()+!

I'd call it JustStop

wait what happened while I was gone @Razetime

Razetime

rain

StackMeter

ok

and

Bubbler

07:54

This is simply insane. I managed to build an algorithm that efficiently evaluates untyped lambda calculus and constructs the normal form. And it's modified from a major conference paper. And it took only two weeks.

13

Or, rather, OMG, because it's beyond insane:

Apr 21 '20 at 9:21, by Bubbler

Though I'd label it as hard, but then the difficulty scale on CGCC goes like easy, medium, hard, insane, OMG, legendary.

StackMeter

gg

I'd star it ten times if I could

also

I managed to finally figure out how to turn a string into a vvariable

that means I don't have to suffer writing a method

Bubbler

CMegaC: fastest-code Take a ULC expression and reduce into its normal form :P

StackMeter

yeah, that's not happening in the next month

rak1507

this is amazing

Razetime

08:12

@Bubbler worth a challenge in main?

Bubbler

I guess it might be, as googling "fastest untyped lambda calculus" gives practically nothing (except for the mentioned paper)

Razetime

08:27

@Bubbler wow, did you build this on gitpod?

Bubbler

Yes

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Fastest untyped lambda calculus evaluator fastest-code functional-programming lambda-calculus interpreter What it says on the tin. Mainly because googling "fastest untyped lambda calculus" gives almost zero meaningful results. Challenge details coming soon. Good starting points include this PEPM ...

StackMeter

08:40

oh

there's a whole lot of chemistry jokes

for example Na

A username

Sodium Sodium Sodium Sodium Sodium Sodium Sodium Sodium Batman!

Adám

Huh, that's actually good:
― Do you know any chemistry jokes?
― NaH.

A username

HeHeHeHeHe.

Adám

@Ausername That's impossible, I think.

NaH.

A username

NO.

Adám

08:55

Relevant.

4

A username

How?

Adám

To the site, I mean.

A username

Oh, yes. Nice read!

caird coinheringaahing

09:37

> TryItOnline accepts Piet code, but you have to upload it as a hexdump.

It just says that without any link to TIO, and it doesn't "introduce" or even mention TIO before that :P

A username

Here's the code for prime numbers in my new language!

PUT 2 IN DAT e
REPEATERER 100
PUT e IN DAT f
TAKE AWAY DAT 2 FROM DAT f
PUT 2 IN DAT i
PUT 1 IN DAT p
REPEATERER f
PUT e IN DAT g
MODULO g BY i
IF DAT g IS TWOOFY DEN
ODDERWISE
PUT 0 IN DAT p
BREAK DAT REPEATERER
END DAT CONDITIONAL
ADD ONE TO DAT i
STOP DAT REPEATERER
IF DAT p IS TWOOFY DEN
PRINT DAT THINGY e
END DAT CONDITIONAL
ADD ONE TO DAT e
STOP DAT REPEATERER

Very well spelt. (Is 'spelt' a word?)

I mean, it's more readable than Malbolge...

I think it's Turing-complete.

ngn

09:55

@Bubbler starred. no idea what the significance of this is, but it looks clever :)

New Main Posts

0

Q: 1. Construct a graph with arbitrary number of vertices

Construct a graph with arbitrary number of vertices and find whether the graph has an induced K13 or not? Note that Kis is a complete bipartite graph with one vertex on one partition and three vertices on the other. You have to device an efficient algorithm to check whether the graph is K13-free...

code-golf code-challenge fastest-code code-generation fastest-algorithm

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