The Nineteenth Byte

hyper-neutrino

00:00

i don't think it's about SE CMs, admins, and mods

i think it's about general communities

This has aged well:

> Sometimes the owners or overseers of a community need to remove someone popular -- suspend a top user, boot a popular moderator, or fire a key employee. As we've seen, sometimes this causes an immediate, vehement, and very public reaction, and you have a public-relations fiasco on your hands. Not only are you losing community members (and the benefits they bring, like ad dollars), but perhaps more importantly, your reputation is taking a huge beating on the Internet.
asked Jul 3 '15 at 23:04
Monica Cellio

hyper-neutrino

:/

> Let's take the example of Stack Exchange: I think there is no risk of a "Reddit-like" crisis on Stack Exchange. The reason is that Reddit is rather unessential, whereas Stack Exchange has become an everyday work tool for many. In absence of viable alternatives, people will always come and play by the rules, whether they agree on how the site is run or not, because they need. If your community provides value, I think you can simply run it just the way you please.
gd1

caird coinheringaahing

...

I have no words

Bubbler

That's unfortunately true I guess

Bubbler

00:21

Any Feedback?

caird coinheringaahing

@Bubbler They both look good, but only if you post them after I post my next challenge :P

Bubbler

Maybe we can tie by writing the 100th challenge on the same day :P

caird coinheringaahing

The basis for the Hexagony one is actually really fascinating, it seems like it'd be really cool seeing if it's widely usable in restricted-source challenges

@Bubbler That'd be a good way to get it :P

Bubbler

00:36

@cairdcoinheringaahing It's pretty good for single byte output, but it quickly falls out when you need to output more than one char in a single program (without redirection commands, O(n^2) program size is needed to print n chars)

New Sandboxed Posts

03:54

0

A: Sandbox for Proposed Challenges

Number of solvable 2xN mazes Your job is to write a program that takes a number N as input and outputs the number of 2-by-N mazes that are solvable. A maze is solvable if it has a path of empty cells (represented here as .) from one end to the other. For example, xxxx..... .....x..x is solvable,...

Bubbler

05:40

I think the accepted answer to "Things to consider when writing challenges" is somewhat outdated and does not reflect the current culture well enough. Should we fix it?

(My answer is yes, in that it does contain valuable tips and it is linked from the Welcome post)

hyper-neutrino

We can take a look at it and either rewrite it totally or just go through it and bring everything up to date

I think that'd be a good idea, especially if it's linked as something we want new users to read before participating

A username

06:15

Any feedback? Note Bubbler's comments at the bottom.

Razetime

06:32

@Ausername ask for output of the 2XN mazes

makes the question harder but unique

and a lot more interesting than the recurrence mentioned

Bubbler

Yeah, that's definitely an option

Razetime

making it non code-golf would be a good idea at that point

Bubbler

How would it work without code-golf though?

Razetime

i'm not sure

but it feels too close to this one : codegolf.stackexchange.com/questions/206957/solve-a-2xn-maze

you just need to extend one of the answers to brute force all the possible binary patterns

Bubbler

True

Wasif

06:40

Hello everyone!
Have there been any challenge to draw the probability tree of n consecutive coin flips or dice rolls?

In ASCII like

Bubbler

There must be a tree-drawing ascii art challenge

Wasif

H T
HH TT HT TH
HHH TTT...

Razetime

@Wasif codegolf.stackexchange.com/questions/tagged/…

I see none

Wasif

Found one more challenge! (insert evil grin here)

Bubbler

Make sure to objectively describe the ascii art format though

Razetime

06:43

it'd be funny to use apl trains for binary trees

Wasif

06:55

   H       T
 H   T   H   T
H T H T H T H T
HHH HHT HTH HTT THH THT TTH TTT

Is this looking bad?

For 3 coin flips

Razetime

if it's ascii art then ask for centering them

Wasif

ok

Razetime

and align each branch with the result

Neil

08:41

@cairdcoinheringaahing huh, (see full text) but there is no more text?

Razetime

@Neil i think that happens when you press shift enter on a message that's "too long" according to se chat

New Sandboxed Posts

09:08

0

A: Sandbox for Proposed Challenges

xkcd 2385 Based on this comic: https://xkcd.com/2385/ A King of the Hill in which all submissions choose a score. This represents their cybersecurity grade. Their game theory grade is the difference between their grade and 80% of the average grade. Their final score is the geometric mean of both ...

New Sandboxed Posts

09:33

0

A: Sandbox for Proposed Challenges

Is it a chess cycle? code-golf chess decision-problem Inspired by a discussion from the Esolangs.org unofficial Discord Server. Instructions A chess cycle is an arrangement of a chess board where each piece must attack one other piece, and only one other piece. Here is a board example: Your subm...

Anush

10:42

CMC find median of a list/array of integers

one point per language :)

rak1507

10:59

rosettacode.org/wiki/Averages/Median 115 points :)

John Dvorak

11:45

Ruby: ->a{s=a.size;(a[s/2]+a[(s-1)/2])/2.0}

Lyxal

Vyxal, ṁ

Bubbler

12:03

Factor, median

Razetime

12:32

@Anush BQN, {2÷˜(≠𝕩)⊑»+˝˘2↕2/∧𝕩}: mlochbaum.github.io/BQN/…

New Main Posts

0

Q: Sejarah dan Pengertian Togel Yang Sering Dimainkan

Sejarah perjudian Togel telah ada sejak era kolonial belanda. Game togel ini sudah ada sejak zaman kolonial Belanda. Pada waktu itu, pusat perjudian Togel didirikan di banyak tempat, seperti Batavia, yang merupakan pusat komersial kolonial belanda. Inilah penjelasan shio Judi Togel atau yang dise...

card-games

ZippyMagician

Arn uncompressed, :-(?:v:-#&+?:^:-#. I should probably add a median function

Manish Kundu

This has to be the fastest downvoted challenge ever.

ZippyMagician

certainly looks like it

according to google translate, it's indonesian

it's an advertisement for an online gambling website lmao

caird coinheringaahing

@NewMainPosts Flag as spam y'all

ZippyMagician

12:43

I have already

caird coinheringaahing

It's also the third indonesian gambling spam post in the last 8 hours

ZippyMagician

maybe the think code golfers are really interested in indonesian gambling :p

Anush

12:57

@rak1507 :)

@JohnDvorak nice

@Lyxal too short!

@Razetime that's confusing. the median of 1,4,3,2 is either 2 or 3. You don't normally say it is 2.5 do you?

caird coinheringaahing

@Anush Jelly, 2 bytes: Æṁ. 5 bytes as a non-builtin: L‘HịṢ

Wezl

@NewMainPosts RIght, the amount of butter you need to put in waffles to make them the right texture is astounding!

caird coinheringaahing

@Anush Yes, you do

Razetime

@Anush i think you should read up on median

user

@Anush APL, too many bytes: (2÷⍨⊢(⊃⍨∘⌈+⊃⍨∘⌊)2÷⍨1-⍨≢){⍵[⍋⍵]}

@Razetime That looks really cool! How does it work?

ZippyMagician

13:15

took a look at BQN, it looks really interesting

user

It does, yeah

Razetime

@user golfed it further to this: {2÷˜(≠𝕩)⊑»+˝˘2↕2/∧𝕩}

with help from mlochbaum

user

Nice!

Are you making a range from ⌊n÷2 to ⌈n÷2?

caird coinheringaahing

13:31

Any feedback?

user

You forgot 3 more links for monads :P

Looks good to me, though

caird coinheringaahing

@user I was confused for a second, as Jelly calls things links :?

user

:P

@cairdcoinheringaahing (that's one weird emoticon, btw)

Wezl

"7 commands that always takes a single positive integer argument" "+ takes a left and a right argument and returns their sum" This is confusing me

user

Maybe you should clarify that the entire program takes a single argument

caird coinheringaahing

13:36

Yep, reworded to "It is a tacit programming language that always takes a single integer argument and that has 7 (or maybe 16) commands."

Removed "positive" as that affects my related metagolfer challenge. The interpreter challenges till says "take a positive integer and a program and interpret it"

Razetime

@user nah I borrowed an idea from user98105

I just replicate twice

add that tot the shifted input

sum overalpping pairs

and then take len(input)'th element

user

Oh cool

That's really smart

Redwolf Programs

15:00

/((?<![a-zA-Z0-9_\.])([0-9_]*\.[0-9_]+|[0-9_]+\.?)([a-zA-Z][a-zA-Z0-9_]*)?(?![a-zA-Z0-9_\.]))|((?<!\*)\*\*?(?!\*))|((?<!-)--?(?!-))|[+\/!|&:()\[\]\\]|((?<![a-zA-Z0-9_])[a-zA-Z][a-zA-Z0-9_]*(?![a-zA-Z0-9_]))/g

I am a horrible person

JPeroutek

What a monstrosity

caird coinheringaahing

@RedwolfPrograms What's that checking for?

Redwolf Programs

That is the entire tokenizer for something I'm making for computer science class lol

I can't be bothered to do it properly

hyper-neutrino

15:13

good news everyone

the tour page updated to the new revision of the question

i can FINALLY status-completed that

Redwolf Programs

:D

caird coinheringaahing

\o/

Redwolf Programs

That is cursed

user

Remind me never to use random chat commands without checking the text it gets replaced with first

caird coinheringaahing

ಠ_ಠ I'm one VLQ review away from a Reviewer badge, but we haven't had any for 4 days (except for Redwolf's one a couple of hours ago)

Redwolf Programs

15:16

I'd have left it for you if I'd know you needed it for Reviewer :p

user

I'd help out, but...

caird coinheringaahing

@RedwolfPrograms Nah, I wasn't at my computer 2 hours ago (on mobile), so I'd probably just be ninja'd by WW instead :P

Redwolf Programs

I haven't done many reviews recently :/

I've been very busy

user

Good, leave some for us non-userscript-powered mortals :P

hyper-neutrino

imagine having reviews

i have 21 reviews total on VLQ :/

my most reviewed queue is 31 on close votes

caird coinheringaahing

15:21

I still find it wild that WW has >1000 reviews in multiple queues

Neil

@RedwolfPrograms why are you using [a-zA-Z0-9_] instead of \w?

Redwolf Programs

@Neil Oh, I forgot about \w

caird coinheringaahing

Why does Python's range have a .count attribute? Isn't the return always going to be either 0 or 1, which makes it a more complicated version of x in range?

pppery

15:38

Probably for consistency with the sequence abstract class.

pxeger

@cairdcoinheringaahing so you can use range().count instead of lambda x:x in range() or range().__contains__

Wezl

16:40

CMC: given a list, return its pairs like [a,b,c,d,e,f] => [(a,b),(c,d),(e,f)]. You can choose what to do with odd-length inputs.

hyper-neutrino

think s2 in jelly

yes

Wezl

prolog, 38 bytes, p([A,B|R],[A-B|O]):- p(R,O). p([],[])., outputs as list of any - any

hyper-neutrino

lambda x:[x[i:i+2]for i in range(0,len(x),2)] or something like that maybe

Redwolf Programs

@Wezl Can we assume the list only contains numbers?

Wezl

yes

Redwolf Programs

16:47

d=>(d+[]).match(/\d+,\d+/g).map(r=>r.split`,`)

Wezl

you can limit it to one digit numbers if you want, to save 2 bytes :)

Wasif

I am back
Well its too easy in python `list(zip(a[::2],a[1::2]))`

When a is the list

slicing is like magic

you can add a lambda

if you like to turn it into a function lambda a:list(zip(a[::2],a[1::2]))

hyper-neutrino

oh right

Redwolf Programs

I'm considering doing a programming-puzzle, but I'm worried what I currently have is too easy

Wasif

CMC: Given two integers n and m calculate n-based log of m, without using any log() builtin or imported function

Redwolf Programs

16:59

Is integer logarithm fine?

Wasif

@RedwolfPrograms yes

no answers yet
should I reveal solution

Redwolf Programs

Is anyone here good at JS (with lots of knowledge of its weird quirks)?

hyper-neutrino

f=lambda n,m:(m<n or 2+f(n,m/n))-1

Redwolf Programs

I need someone to help me determine if a programming puzzle I wrote is too easy to be a standalone challenge

Wasif

@hyper-neutrino my god you beat me! f=lambda n,m,k=1:m**(1/k)==n and k or f(n,m,k+1)

was my original

user

17:06

@Wasif Kinda cheating, but *⍣¯1 (APL)

Wasif

can you give some explanation?

I don't speak APL

Anush

I was completely wrong about the median

just for the record :)

and I am ashamed (sort of )

hyper-neutrino

inverse of exponent function

Wasif

oh thats too clever

hyper-neutrino

*⍣¯1
*     exponentiation
 ⍣    function power / repetition
  ¯1  -1

user

17:07

@Wasif ⍣ repeats a function some number of times. * is the exponentiation function, so *⍣¯1 applies that -1 times (finds the inverse)

Wasif

I should have banned all builtins

user

@Wasif ?

Wezl

~~* exponent ⍣ repeated ¯1 negative once~~ ninja'd by two people or bots

user

If you ban all builtins, you won't be able to do anything

hyper-neutrino

no accessing the computer's ALU because that's a builtin /s

user

17:08

It's worth noting that the inverse of the exponentiation function could also be a root the other way

Wasif

@user you can do actually with only arithmetic and recursion

user

@Wasif Yes, but it's hard :P

hyper-neutrino

arithmetic is still a builtin :p

Wasif

I didn't mean that

Wezl

so no builtin functions? (which is still unclear)

Wasif

17:09

yes

user

I think Wasif meant no exponentiation-related builtins

Wezl

@Wasif well in APL, arithmetic is in functions

Wasif

then APL is disqualified

Anush

CMC given a positive integer n, find the next prime p and two integers a, b each chosen uniformly at random from 1...p.

I just had to write code to do this

and I wish it was shorter

Wezl

@Wasif >:|

user

17:11

@Anush That sounds like two different challenges

Anush

@user could be. But I want to see how much shorter it is all in compared to my code

I would never ask this on main :)

Wasif

@Anush Vyxal has a bulltin for the first one Ṗ

Anush

@Wasif cool.. but how is it for the a, b part?

Wasif

is the range inclusive?

hyper-neutrino

do a,b have to be inequal or in a particular order

Anush

17:15

@hyper-neutrino no.just chosen independently and uniformly

@Wasif yes

caird coinheringaahing

@RedwolfPrograms Mind accepting my answer to this now it'd been completed?

Redwolf Programs

Done

caird coinheringaahing

Thanks :P

Redwolf Programs

I'm going to post a programming-puzzle, I think it's a bit too easy but it's kind of neat

caird coinheringaahing

@Anush Will n be prime?

user

17:16

@RedwolfPrograms Link?

hyper-neutrino

Æn,X$⁺ in jelly if structure doesn't matter

add F after if you need it to be a flat list

Anush

@cairdcoinheringaahing it might be and might not. If it is you can set p=n

hyper-neutrino

built-in for next prime in jelly is a 2b :c

Redwolf Programs

@user Not posted yet (can't sandbox it for obvious reasons :p)

caird coinheringaahing

@Anush Jelly, 6 bytes: ÆnµX,X

@hyper-neutrino That won't work

It'll select b from 1...a, not from 1..p

user

17:17

@RedwolfPrograms Oh right. Let me know when you post it so I can fug-wit it :P

hyper-neutrino

oh

Anush

@cairdcoinheringaahing you have n = 16 so a=17 should be possible. Is itr?

hyper-neutrino

see this is the problem with testing random things

caird coinheringaahing

Wait, no, it's even more broken

hyper-neutrino

it looked right to me

caird coinheringaahing

17:18

@Anush Yes

user

It looks like only 2 answers on the fibonacci question meet the criteria (the brainf*ck and Haskell ones)

hyper-neutrino

wait I see

the second X picks from P, a

oops

caird coinheringaahing

@Anush The µ means that both Xs will have p as their argument

Anush

@cairdcoinheringaahing oh yes. very nice answer then!

hyper-neutrino

@Anush should the output be p,a,b or just a,b

Anush

17:19

@hyper-neutrino just a, b

hyper-neutrino

bruh

i thought i needed to output the p too

lol

Wasif

g=lambda p:[random.choice(range(p+1))for _ in range(2)] for python, you need to import random

hyper-neutrino

wouldn't random.randint be shorter

also this assumes p is prime, doesn't find next prime

Wezl

and can't you do for _ in [0,1] for golfiness points

user

Without the space

Wasif

17:21

aren't they two seperate programs?

pxeger

g=lambda p,x=random.randint;[x(0,p+1),x(0,p+1)]?

Anush

@Wasif can't that choose 0?

@pxeger a == 0 is banned

Wezl

@user oops, for _ in[0,1], thanks. How dare I use whitespace >:P

user

Then just add 1

hyper-neutrino

for _ in" "

Wasif

17:22

good night i am gonna sleep

Anush

good night!

user

@hyper-neutrino ?

Anush

whatever time zone you are in :)

hyper-neutrino

in general you should do for _ in" "*x or for _ in[0]*x if you don't need the value of the loop

@user afaict you don't need the _ so you can just loop through any length-two iterable?

user

Oh

caird coinheringaahing

17:24

@hyper-neutrino I so wish the ? placeholder gets implemented. for?in" " is something I really want to see in Python golf :P

hyper-neutrino

i agree

user

@cairdcoinheringaahing Because it's clearer than _ or for golfiness reasons? :P

caird coinheringaahing

@user Yes

user

ಠ_ಠ

Redwolf Programs

I hate college board so much, they say their digitial testing app is available for Chromebooks, but they refuse to let you download itself and assume you're on a school-owned device.

user

17:26

Even if you're on a school-owned device, why don't they let you download it?

caird coinheringaahing

That's fun; strikes through the red mod-only tags on meta have red strikes

Redwolf Programs

user

Lol

This is why you use Windows

Redwolf Programs

Yeah, but what if I'm on a non-school managed Chromebook? Checkmate, Atheists.

caird coinheringaahing

@RedwolfPrograms TBH there are a lot of reasons to hate college board

pxeger

17:27

So it's not possible to download it manually? That's dumb

user

I think they even have it available for Linux

Redwolf Programs

Luckily I think it's available for Linux so I can download it on my Minecraft laptop when I get home

@user Samurai'd

lol

user

Backward ninja?

Redwolf Programs

yep

pxeger

lmao

user

17:29

Let's change the subject

You have a laptop dedicated to Minecraft?

Redwolf Programs

Basically yeah

Minecraft and Haskell

caird coinheringaahing

The two most important things in life

user

Haskell doesn't work on Chromebooks?

Redwolf Programs

It probably does but I got lazy

user

@cairdcoinheringaahing Zombies and laziness?

@RedwolfPrograms That tends to happen when learning Haskell

pxeger

17:30

ha. ha. ha.

user

I am to jokes as ice boxes are to meat

pxeger

I really like drinking brake fluid, but I'm not addicted. I can stop at any time

7

hyper-neutrino

reminds me of that one quote (forget from whom) that went like "quitting smoking is easy! i've done it a hundred times"

caird coinheringaahing

@RedwolfPrograms Is it JS specific?

Redwolf Programs

Yes

caird coinheringaahing

17:32

Boo :P

user

For the first time in forever, I haven't starred half the messages on the starboard

hyper-neutrino

@cairdcoinheringaahing why status-planned?

caird coinheringaahing

@hyper-neutrino Ask JNat

Redwolf Programs

@cairdcoinheringaahing Kinda hard to make multi-language programming puzzles :p

hyper-neutrino

oh wait

caird coinheringaahing

17:35

I can't edit the tags, I just updated the edit message

hyper-neutrino

i forgot you couldn't have been the one to change the tags

wow i'm dumb (shut up lyxal)

must mean they've moved it from their "look at this" list to their to-do list, hopefully

pxeger

I was addicted to the hokey pokey, but I turned myself around

user

@pxeger What will it take to stop you? :P

pxeger

I was addicted to curtains, but I pulled myself together

hyper-neutrino

@pxeger you became a regular expression?

caird coinheringaahing

17:36

I had a problem with making only left turns, but don't worry, I'm on the right track now

Redwolf Programs

@pxeger What's with the addiction jokes? You seem to be..err...addicted to them.

user

I was addicted to HGH, but I've grown as a person now.

pxeger

I used to be addicted to deli meats, but I quit cold turkey

caird coinheringaahing

My car had a problem with break downs, so I joined AA

(Is it AA outside of the UK? I've heard Americans refer to "triple A" before)

pxeger

I'm addicted to prescription glasses, but I don't see a problem with that

user

17:40

ಠ_ಠ

pxeger

@cairdcoinheringaahing AA = Automobile Association; in the US it's the AAA = American Automobile Association

user

You should join AA too, judging from your puns

caird coinheringaahing

@pxeger Ah, the US, making everything 33% more patriotic

Anush

how can you round up to the nearest power of 2 in python?

pxeger

x&x+1? Or is it x&-x I can't remember

Something like that

Anush

17:44

thanks

pxeger

find it on StackOverflow lol

Anush

2**(x - 1).bit_length() is odd. I mean I guess . has higher precedence than **

caird coinheringaahing

I managed to get -90 rep on a question today. How? I offered a -100 bounty, then got an upvote, which makes the system report -90 ¯\_(ツ)_/¯

pxeger

Why wouldn't that make -90?

user

And here I was thinking you'd gotten 45 downvotes :P

caird coinheringaahing

17:48

@pxeger I'd expect it to report the bounty and the upvote separately

Redwolf Programs

18:26

Before I post my programming puzzle, anyone want to look at the intro and make sure it's clear?

Chat-mini-sandbox hehe

Wezl

btw if you add a newline at the end the ``` won't show

Redwolf Programs

Oh I didn't notice it was showing

Thanks

user

18:45

@RedwolfPrograms Are there other ways to solve your puzzle?

Redwolf Programs

Not that I'm aware of (other than other properties), but since the criterion is first to solve it accepting yours is fine

user

Yay for trivial solutions found after 1 minute of Googling :P

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Plz Help I Need Investors ASAP Bob has a startup which has developed “SuperAIGolfer”, a product which uses “advanced AI” and “black magic” to automatically codegolf computer programs. Unfortunately, Bob is running out of cash and desperately needs money from investors to keep his company running....

0

A: Sandbox for Proposed Challenges

Compute a real root of a cubic polynomial. You are given a cubic polynomial of the form $x^3 + a x^2 + b x + c$ and your task is to compute one real root of this polynomial, or equivalently a solution to the equation $x^3 + a x^2 + b x + c = 0$. Input is the triple $a, b, c$. These are guaranteed...

user

Lol I can't find a way to get around what Wezl pointed out

__lookupGetter__ works as a bandaid, but that still doesn't stop one from doing "__lookupGetter__": "foo"

Redwolf Programs

I'll just clarify that the usernames are [A-Z]\. [A-Z][a-z]*

user

18:56

Using a Symbol doesn't help either :(

New Main Posts

3

Q: Circumvent this credentials validator

This is a program I wrote in JavaScript to validate some inputted credentials, with an intentional vulnerability. The credentials_validator function takes an object as input, with usernames and passwords. It returns a function, which takes a username and password and returns true if the credentia...

javascript programming-puzzle

caird coinheringaahing

19:26

CMC: Given a list of integers L and an integer n, return the elements of L, sorted by their absolute difference with n. E.g. [1, 2, 3, 4, 5, 6, 7, 8, 9], 5 -> [5, 4, 6, 3, 7, 2, 8, 1, 9]. The sort should be stable

hyper-neutrino

my extremely intelligent solution that was very difficult to figure out:

ạÞ

Wezl

is that a zero byte program in the language ạÞ :P

caird coinheringaahing

Meta-Jellyscript :P

Redwolf Programs

@cairdcoinheringaahing Ash: ỤΔ₇

Wait no that doesn't work

Make that an ₈

Take that Jelly, three bytes, no two byte built-ins.

caird coinheringaahing

That's not a builtin in Jelly :P

Redwolf Programs

19:31

Oh

caird coinheringaahing

Þ - sort by the previous link. ạ absolute difference

Redwolf Programs

Take that Jelly, just a byte longer

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