The Nineteenth Byte - 2017-09-01 (page 1 of 3)

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1:07 AM

0

Q: Shifting digits

Given a string representing a number and the base that number is in, shift each positional value upward, wrapping back to zero if the value cannot increase. You will never be provided invalid input. For example, you may be provided ['5f6', '16'], which represents the number 1526 in base 16. The ...

code-golf number

2 hours later…

2:56 AM

@cairdcoinheringaahing Not at all. Go ahead.

@sergiol Maybe it does. I don't think I can claim that I created it alone though.

1 hour later…

4:04 AM

@ASCII-only @ATaco in australia do you actually sing the "Why was he born so beautiful" song for birthday O_o

4:28 AM

@Downgoat no

D: that mean meme is unreliable source of information /s

We should do an AR challenge that would be interesting

@Downgoat I can't say we do

1 hour later…

6:06 AM

O_o I think I just saw a jamburger in the fridge

@Downgoat Like?

6:53 AM

I have posted my vpython problem here, and if you know how to fix it, please answer it.

@Fatalize bonjour

Hi

Erik the Outgolfer

7:25 AM

@Dennis well, you can say it's crowd-sourced

but don't take all the credits to yourself either :p

@DJMcMayhem yeah...if you're still here lol I was sleeping

7:37 AM

I now have exactly 100 bronze badges :-)

2 hours later…

9:08 AM

@Riker reddit.com/r/WritingPrompts/comments/6x6vt9/…

10:05 AM

2 hours later?! Unacceptable for TNB!

10:31 AM

2

Q: Is this a valid Takuzu board?

Takuzu is a logic game in which you have to complete a grid with cells containing 0s and 1s. The grid must follow 3 rules: No three horizontal or vertical consecutive cells can be the same. There must be an equal number of 0s and 1s in each row and column. No two rows can be the same, and no tw...

code-golf array-manipulation decision-problem matrix

11:05 AM

damn, I crashed my C64 emulator :o

11:43 AM

I'm having a lot of issues getting MongoDB to work with PHP

seems like more effort than it's worth tbh

hi

12:00 PM

@EriktheOutgolfer Are you here?

Erik the Outgolfer

yeah

@EriktheOutgolfer Do you see any way to golf this? It feels insanely long compared to other golfing languages.

Erik the Outgolfer

well now I'm trying to outgolf fatalize but I'll see...

...btw I don't think I'll outgolf fatalize :p

@EriktheOutgolfer Outgolf fatalize in Brachylog in under 20 bytes?! Good luck.

Erik the Outgolfer

well I've never outgolfed him in brachylog

12:03 PM

@EriktheOutgolfer Ok, ping me or leave a comment if you find a way to golf my answer (or post your own answer if you want, but still let me know). Anyway, I have to go now. Thanks

Erik the Outgolfer

bye

caird coinheringaahing

Does anyone know if you can rollback edits on github?

@EriktheOutgolfer There's a first for everything

Erik the Outgolfer

if I outgolfed dennis I'll eventually outgolf you too :p

I think brachylog wins since it has ≠ and it can return inconsistent values or something

(where if anything is returned at all true. is printed)

@Fatalize 25 bytes >_>

@EriktheOutgolfer 18 bytes now

Erik the Outgolfer

12:17 PM

maybe z;?{≠&ḅᵐclᵐ⌉≤2&{oḍlᵐ}ᵐ=}ᵐ is too long

Though I'm not sure if I understand rule 2 exactly as it's intended

Erik the Outgolfer

hmm...

"There must be an equal number of 0s and 1s in each row and column."

what are you guys referring to?

Erik the Outgolfer

@Fatalize yeah I'm not sure either...

but I've played 0h h1 in the past

12:18 PM

Does that mean that the number of 0s and 1s must be the same in each row regardless of the other rows or does that mean that all rows must all have the same number of 0s and 1s?

Erik the Outgolfer

count(0) == count(1) for each row and column

yeah but

does e.g. count(0) of row 1 = count(0) of row 2?

In a 6x6 matrix each row and column must have exactly 3 zeroes is how I understand it

Erik the Outgolfer

@Fatalize yeah but you don't have to check for that count(0) == count(1) for each row covers it

Anonymous

@cairdcoinheringaahing git revert

12:19 PM

@EriktheOutgolfer That's what I'm not sure about

Is it allowed to take an extra variable in a lambda declaration to save bytes? i.e. (e,s,j) => {j=. . .} as opposed to (e,s) => {var j=. . .}?

caird coinheringaahing

@Mego as in from github

@LeakyNun this challenge

@Fatalize thanks

@Ceshion how would you call it?

Anonymous

@cairdcoinheringaahing I don't know if you can do it through GitHub, but git revert does exactly what you want

Erik the Outgolfer

12:21 PM

@Fatalize for a 6x6 board, it means that every row must have 3 0s and 3 1s and every column must have 3 0s and 3 1s too

@LeakyNun with the type's default value, in this case 0 since it's an int

Erik the Outgolfer

so it covers what you're talking about

Anonymous

@Ceshion If you can call the function without providing the variable as an argument, yes. Default params are the usual way of doing that.

Anonymous

I haven't had enough coffee to remember how JS does default params or deals with unitialized params

It's C#, so I can't make it an optional parameter in a lambda

Anonymous

12:23 PM

Oh right, => is C# lambda notation

@EriktheOutgolfer Yeah thanks. The way I check is actually equivalent when thinking about it

Anonymous

I don't think it's possible to have default/optional params in C# lambdas, so you'd either have to do it var j inside the body, or find a different approach

@Mego yep, seems that way

79 bytes for a C# answer isn't too bad though

Erik the Outgolfer

tfw you realize you can't golf z;?{≠&ḅᵐclᵐ⌉≤2&{oḍlᵐ}ᵐ=}ᵐ

wait...I think it's invalid :/

too many maps

Erik the Outgolfer

12:28 PM

@Fatalize that's to ensure it's for all elements and not just one

Don't know if you've peaked at my answer, but basically in "check whether this is true or not", it's usually shorter to check that it is impossible to be false using ¬

Erik the Outgolfer

well ¬{} alone is +3 bytes

except

if I put it before the first {

yeah but then you don't need maps everywhere

Erik the Outgolfer

so it works differently than what I thought...

@EriktheOutgolfer using s₃ is much shorter than messing with ḅ here

@EriktheOutgolfer What does? ¬?

Erik the Outgolfer

12:32 PM

yeah

And I thought MATL would win by far... turns out Brachylog will

@Mr.Xcoder I'm also surprised at MATL's score, considering the input is a matrix

Erik the Outgolfer

@Fatalize except that the opposite of ≠ is ¬≠...

Yes, that is very strange... Maybe Luis didn't yet use the optimal algorithm? (But he hardly ever mistakes in MATL..)

@EriktheOutgolfer Just read ¬ as "Impossible that:" and then it's pretty clear what it does

12:35 PM

Anyway, I am also very surprised my Pyth answer got that long, given that it has transpose...

Pretty sure the main advantage of Brachylog here is ≠ (and that's not the first time that's the case)

I can see absolutely no way to golf it (and there definitely should be a way)

Erik the Outgolfer

@Fatalize me too

caird coinheringaahing

@Mr.Xcoder I think I should change my primary site to Interpersonalskils.SE, given my recent success there :P

@Fatalize A great advantage is that it has a really short way to say "is impossible that" and also has the advantage of being declarative

@cairdcoinheringaahing Umm, don't leave us :-(

Erik the Outgolfer

12:39 PM

@Fatalize I've got z;?¬{¬≠|∋s₃∋=|∋ḍ∋¬=}ᵐ but it's failing...

too many ∋s I guess...

Wow, you are constantly abusing stuff 3 or 4 times...

@EriktheOutgolfer I'll check…

@EriktheOutgolfer Well first of all the second rule should be ∋s₃=

Erik the Outgolfer

umm, no?

I take one of the substrings and check all elements are equal

not that the substrings are equal

Actually it should be ∋∋s₃=

Erik the Outgolfer

let's say the board is [[0,0,1,1],[1,1,0,0],[0,1,0,1],[1,0,1,0]]

∋ will take one of the elements, e.g. [1,1,0,0]

∋ will take one of the elements, e.g. 1

12:47 PM

no

Erik the Outgolfer

s₃ will...

no?

You map on [Rows, Columns]

∋ will take the rows, ∋ will take a row

at least I think

Erik the Outgolfer

I thought that mapping will execute the predicate twice, once with the rows as the input and once with the columns

Well yes I'm idiotic

then it's really ∋s₃= as I had said

take a row, take a substring

Erik the Outgolfer

but then check that the substrings are equal?

12:49 PM

s₃= -> the substring has equal elements

which is what you want to check

Erik the Outgolfer

oh wait...ohhhhhhhhhhhh

he's starting to believe

Erik the Outgolfer

z;?¬{¬≠|∋s₃=|∋ḍ∋¬=}ᵐ

still failing though

well because your third rule is false

Erik the Outgolfer

yeah I need to sort probably

12:51 PM

if you dichotomize a row, there's no reason each half must have equal elements

Erik the Outgolfer

but wait

it won't work like that

What in the world is "dichotomize"?

@Mr.Xcoder Split in half

Oh, that's... fancy

Erik the Outgolfer

what if the row is [0,0,0,0,0,0]? it would dichotomize into [[0,0,0],[0,0,0]] and both have equal elements

12:53 PM

@Mr.Xcoder this very famous algorithm is sometimes called "the dichotomy method"

(and in my language turns out dichotomy is the word mainly used)

caird coinheringaahing

@Mr.Xcoder So is "bifurcate"

Erik the Outgolfer

"bifurcate" in 05ab1e means "push a, a[::-1]" and it pyth it means "return [B, A(B)]"

-2

Q: MoCk mE LiKE SpONgeBob

In reference to this meme. I want you to mock me like Spongebob. Given a input string insert your own capitalisation to create a message similar to the ones on the meme. Input A string containing any of the printable characters in the english alphabet, either uppercase or lower. Output A...

code-golf string

@cairdcoinheringaahing well, yeah

caird coinheringaahing

@Fatalize ಠ_ಠ I was about to VTC ^^ when you dupe hammered it

12:56 PM

"This should be more golfable" pls no

@cairdcoinheringaahing I forgot I even had the hammer when I voted

caird coinheringaahing

:O Howard was the first user to get the gold code-golf badge

@Fatalize Fixed, I think

Erik the Outgolfer

@Mr.Xcoder I think he meant that his brachylog answer is in danger

@cairdcoinheringaahing wonders who Howard is

caird coinheringaahing

22.1k 2 34 76

code-golf math number string ascii-art code-challenge kolmogorov-complexity

12:58 PM

@EriktheOutgolfer oh, i'm dumb

caird coinheringaahing

He hasn't been here for over 2 years

@EriktheOutgolfer You don't win a challenge with this every day

Erik the Outgolfer

well tbh I predict that husk would eventually outgolf brachylog

Oh, ATM I really hope there will be a fight between Brachylog and Husk. I predict it as such: Leo finds a way to golf it by 1 byte, then Fatalize finds a way to golf 1 byte too, and then (maybe) Zgarb shows up and golfs it down too

Erik the Outgolfer

@Fatalize your brachylog answer seems optimal

caird coinheringaahing

1:02 PM

@Mr.Xcoder Then, in 2 months, 2Deorstv comes in and wins it in 1 byte? /s

@EriktheOutgolfer Not sure yet

Erik the Outgolfer

checked it out...wait

@cairdcoinheringaahing and then, in 1 year, Cthulhu comes in and smashes 2Deorstv :P

caird coinheringaahing

@Mr.Xcoder How do you smash 1 byte?

What do you mean "checked it out"?

1:03 PM

@cairdcoinheringaahing <joke> Empty program </joke>

Erik the Outgolfer

@Fatalize golfed one byte off (?)

≠\≠,?¬{s₃=|ọtᵐ≠}ᵐ

caird coinheringaahing

@Mr.Xcoder <loophole> Sounds legit </loophole>

@cairdcoinheringaahing yours would be a loophole too

Erik the Outgolfer

actually empty program isn't by itself a loophole

@EriktheOutgolfer Seems like it

caird coinheringaahing

1:04 PM

@Mr.Xcoder I don't know what the problem even is :p

Only @EriktheOutgolfer can tell you your program is optimal and then golf 1 byte off of it 30 seconds later

13

Erik the Outgolfer

@Fatalize at least it's golfing something :p

that's how I think btw

and it's the first time I outgolfed you :p

it'll help you to win the brachylog vs. husk war

@Fatalize @EriktheOutgolfer Perfect timing: Husk just got 18 bytes (in the comments)

And HP.Wiz golfed it, not Zgarb, so it might get shorter in the future

Erik the Outgolfer

@Fatalize I see you applied the golf

I did

1:09 PM

And now he realizes it's invalid...

Or maybe not?

Erik the Outgolfer

@Mr.Xcoder please don't scare me or him :p

caird coinheringaahing

I'm not sure if I'm more annoyed or happy at github not allowing you to escape ` with a `\`.

Erik the Outgolfer

you can do ``abc`def``

@cairdcoinheringaahing You can use double-bascktick-space-backtick-space-double-backtick

caird coinheringaahing

@Mr.Xcoder `` ` ``

1:11 PM

Yes, that

Didn't want to mess up markdown, to avoid potential fails :)

WOW... Lynn did it in 120 bytes in Python... How can that be even valid?

Erik the Outgolfer

127

caird coinheringaahing

@Mr.Xcoder Lynn is good. That's how.

Wait, I think I can golf their answer now

Erik the Outgolfer

and then came xnor and outgolfed everybody! mwahaha

@Fatalize @EriktheOutgolfer You brachylog answer is invalid

caird coinheringaahing

1:13 PM

o_O is Lynn a guy or a girl?

@Mr.Xcoder If you're talking abouth Lynn I think she's a girl

@Mr.Xcoder How so?

Erik the Outgolfer

she is a girl

@Fatalize look at the comment...

@Fatalize comment

Erik the Outgolfer

but I think I can fix it without going back to 18

or is 18 invalid too?

or maybe 20 too?

caird coinheringaahing

I just watched the 8th Fast and Furious and realised how many Game of Thrones actors are in it

Erik the Outgolfer

1:16 PM

@Fatalize probably fixed: ≠\≠,?¬{s₃=|ọtᵐ≠}ᶠ

also btw what's the difference between \ and z?

@EriktheOutgolfer No way this works properly, you lucked out on the test case

ᶠ doesn't map so this can't work

Erik the Outgolfer

maybe select then

@EriktheOutgolfer for a square matrix transpose, none

Erik the Outgolfer

ˢ

@Fatalize for others?

btw is it the same as either of z, z₀ or z₁?

My 18 bytes version works

Erik the Outgolfer

1:23 PM

would the 17-byte version but with ˢ instead of ᵐ as the last char work?

your 18-byte version is threatened

(husk)

I'm not even sure I understand why my 18 bytes version works now

caird coinheringaahing

@Fatalize Then you know its golfed enough :P

Erik the Outgolfer

@cairdcoinheringaahing when I get that feeling then after a while I realize my answer is invalid

so I'm not sure if fatalize's 18-byte version really works or is just valid for some test cases

I don't even understand why it works for [[1,1],[1,0]]

Breakthrough on how long my Pyth answer should be depending on Brachylog: ≠ means {IQ (+2 bytes). Then, \ is .T (+1 byte), ≠ is {I.TQ (+3 bytes), ,?is equivalent to sC,.T (+3 bytes)... The other changes sum up to +13 bytes. Summing all those up, I get 18+2+1+3+3+13 = 40... Uhm, I think I can golf it by at least 2-3 bytes

Erik the Outgolfer

1:27 PM

@Fatalize the ∋ọtᵐ≠ part doesn't say much

No wait nevermind I get it

Is it valid?

yes

What a relief

It's confusing because [1,1] only has 2 occurences of 1

but [2] contains different elements

which means it's not a valid row

Erik the Outgolfer

1:30 PM

s₃ would fail so it goes to the next rule

and then it fails because the occurences of elements of [1,1] are indeed different (since there's only 2)

(I mean it succeeds but ¬ fails)

Erik the Outgolfer

[2]≠ -> [2] I think

yes

which makes the rule succeed, which makes the global program fail

Erik the Outgolfer

I think that your answer is invalid

How so?

1:32 PM

With the same reasoning we got to two opposite conclusions :p

Erik the Outgolfer

hmm...maybe it's valid

LOL

Erik the Outgolfer

yeah I think it's valid

Now I'm not sure why your -1 byte doesn't work

Erik the Outgolfer

maybe because it maps

and a map needs all elements to succeed to succeed

but

≠\≠,?¬{s₃=|ọtᵐ≠}ˢ

1:36 PM

Well yeah that's actually the reason

Erik the Outgolfer

oh wait no

brachylog bug!

that's not just a failure, that's an error

caird coinheringaahing

ಠ_ಠ I don't understand Brachylog

Erik the Outgolfer

oh

_1√ is also an error

@EriktheOutgolfer …because the square root of -1 is not a real

Isn't $\sqrt{-1}$ undefined in gereneral

I mean, it's irrational

caird coinheringaahing

1:38 PM

@Mr.Xcoder No, its i

Erik the Outgolfer

@Fatalize maybe

it's i/-i

@cairdcoinheringaahing Hence the I mean, it's irrational

caird coinheringaahing

@Mr.Xcoder Yeah, I saw that after I posted :p

Erik the Outgolfer

@Fatalize I think I found out the 17-byte version works

1:39 PM

I really need to post a challenge today. really

Erik the Outgolfer

tio.run/##SypKTM6ozMlPN/r/P9pQJ94w9lHL1NOL/v//HwUA

@Mr.Xcoder it is define as $i$

1 min ago, by Mr. Xcoder

@cairdcoinheringaahing Hence the I mean, it's irrational

@EriktheOutgolfer …what does that example have to do with the challenge?

caird coinheringaahing

@Fatalize did you make a youtube video on how to make programs in Brachylog?

1:39 PM

@cairdcoinheringaahing I made only one

Erik the Outgolfer

@Fatalize the same metapredicate can be used instead of the wrong one

4 mins ago, by Erik the Outgolfer

≠\≠,?¬{s₃=|ọtᵐ≠}ˢ

caird coinheringaahing

@Fatalize why?

Because it's time consuming and not many people are interested to learn it anyway

Maybe for people to know how to take input in Brachylog, it's quite tricky

It's tricky because of TIO's naming scheme but otherwise there's not much to it

(and if you know the basics of Prolog)

Erik the Outgolfer

1:41 PM

hey the 18-byte husk version is invalid hehe

caird coinheringaahing

@Fatalize The best way to teach people a golfing language is to create a gallery room on code golf char :p

@EriktheOutgolfer At least it's beating Pyth (for now...). I should go back to counting the emoji hidden in my code since J also lends itself well to that :'-( J beats me in Pyth :'-(

I have never seen J beat Pyth, I don't want to be a pioneer in this case.... HALP isaac

caird coinheringaahing

@Mr.Xcoder J can be quite succinct, and isaac won't show up unless you ping him :p

@cairdcoinheringaahing I don't want to ping him lol

caird coinheringaahing

@Mr.Xcoder You could always ask Leaky

1:46 PM

@cairdcoinheringaahing I know...

caird coinheringaahing

ಠ_ಠ 14 upvotes in 13 hours, 2 answers and not on the HNQ list. SE is confusing.

@cairdcoinheringaahing That's what I ended up doing.

@cairdcoinheringaahing The interpersonal one?

caird coinheringaahing

@Mr.Xcoder Yeah.

Anyway, I am very annoyed by the lack of creativity I have today

caird coinheringaahing

The Max recursion one here got on the HNQ from 3 upvotes and 4 answers. I really don't understand the HNQ

1:52 PM

Do Qs from Betas even show up?

caird coinheringaahing

@Mr.Xcoder Yes. IPS has dominated the HNQ since it started.

>_< I keep thinking IPS is integrated physical science

Thinks they golfed their answer... Adds 5 bytes

3

caird coinheringaahing

Does the association bonus count towards rep cap?

ATM I really doubt my capability of golfing in Pyth

@cairdcoinheringaahing No

caird coinheringaahing

1:56 PM

Ok, which should I post, this or this?

@Mr.Xcoder I doubt my capability of golfing.

@cairdcoinheringaahing Let me read them (the second one)

I have an idea for a challenge and I'm looking to find out what text-based messing services people use:

caird coinheringaahing

@programmer5000 Woah, thats a lot of social media platforms

@programmer5000 Can you add "other"?

@programmer5000 I'm old, where's the option to call someone and actually talk to them?!

Where is Whatsapp?

caird coinheringaahing

1:58 PM

@Shaggy In 1950, where it belongs :D

3

strawpoll.me/13836985

There you go

A new poll

Erik the Outgolfer

@programmer5000 what happened

@cairdcoinheringaahing I don't understand the second sandbox post at all.

@cairdcoinheringaahing Pfft! You kids! I ain't that fecking old!

caird coinheringaahing

@Mr.Xcoder do you think it should simply be "output this string"?

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Sep '171

The Nineteenth Byte

The Nineteenth Byte: General discussion for codegolf.stackexc...

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