The Nineteenth Byte

caird coinheringaahing

18:00

I have a question I was going to post, but I don't want to complete the trifecta :P

Erik the Outgolfer

triwhat?

is there a third question too?

caird coinheringaahing

@EriktheOutgolfer trifecta. Like a collection of 3 things. And no, I was going to post, but put it off for some reason

Erik the Outgolfer

I know what it means

caird coinheringaahing

@EriktheOutgolfer can you give me an approximate byte count for this in Jelly (if you were to do it)?

Erik the Outgolfer

18:15

going over there :p

DJMcMayhem

@cairdcoinheringaahing Oooh, cool

I feel like it should 8-10? idk

Erik the Outgolfer

@DJMcMayhem huh no I don't think so

caird coinheringaahing

@DJMcMayhem Welp that ambitious. Me and Mr.Xcoder got 20 together

DJMcMayhem

Oh geez

lol

I wasn't even close

I'mma need about tree fiddy

caird coinheringaahing

@DJMcMayhem tree fiddy?

DJMcMayhem

18:17

Never mind

Erik the Outgolfer

btw @cairdcoinheringaahing does leading zero before . (i.e. float doesn't have integral part) count as a 0 digit?

Pavel

@cairdcoinheringaahing Three-Fifty, maybe?

Erik the Outgolfer

I think it's referring to the loch ness monster...hence three fifty

caird coinheringaahing

@EriktheOutgolfer Checking with my solution

Erik the Outgolfer

@cairdcoinheringaahing huh?

I just asked if I should count it or not

it's a bit different if I should count it

(or trailing 0 after . in this case e.g. 3.0)

caird coinheringaahing

18:19

@EriktheOutgolfer Yeah, but I'm checking if my solution counts it, so that results are consistant

DJMcMayhem

This is waaaaay harder with floats

caird coinheringaahing

@EriktheOutgolfer does Jelly implicitly remove the leading 0 from float input?

Erik the Outgolfer

yes

0.5 doesn't evaluate to 0.5 in jelly

it's two literals 0 .5

caird coinheringaahing

@EriktheOutgolfer Yes, it does count as a 0 digit. Which means I have to change my solution ಠ_ಠ

@EriktheOutgolfer Yes that does count as a 0 digit

Erik the Outgolfer

~~I can tell you used Ṿ~~ :(

:p

Conor O'Brien

18:23

I'm thinking about posting this, any feedback?

betseg

Android 9 Pineapple Pizza

caird coinheringaahing

@ConorO'Brien To be honest, (just my opinion) I think its too similar to DJ's slashes challenge, but I'd let others cast the first dupe-vote, if it were posted.

Mr. Xcoder

Hooray, 12 k precisely!

caird coinheringaahing

@Mr.Xcoder brb, downvoting

:P

Mr. Xcoder

>.>

Conor O'Brien

18:25

@cairdcoinheringaahing for what it's worth I've had this in the sandbox for more than a month. Notwithstanding, it's a different question. You did read it right? Not just look at the code?

DJMcMayhem

@cairdcoinheringaahing What? It's completely different

caird coinheringaahing

@ConorO'Brien Yes, I'm just stating my opinion. Ignore it if you want.

Erik the Outgolfer

@cairdcoinheringaahing that's usually what those with a hammer say lol

> I'd let others cast the first dupe-vote

caird coinheringaahing

@EriktheOutgolfer Yeah, I say that if I'm unsure about whether it should be closed, because one vote tends to have a domino effect.

Erik the Outgolfer

then it's not your fault anyways

unless you do it purposefully

is the chain inflicted by the one vote, or by "going with the crowd" notions of others?

trichoplax

18:29

It has a domino effect precisely because people who aren't sure still vote once they see someone else vote

caird coinheringaahing

@EriktheOutgolfer on another note, I had to add 11 bytes to my code to handle leading 0 floats (input < 1)

Erik the Outgolfer

(which is a problem)

Conor O'Brien

@cairdcoinheringaahing I sincerely doubt you understood the question... It's like saying "repeat `` N times" is a duplicate of DJ's challenge.

Erik the Outgolfer

gtg now bye all

caird coinheringaahing

@ConorO'Brien OK, fine. I'm going to step out of this and say that you can do what you want; its your challenge.

Erik the Outgolfer

18:30

@trichoplax then the blame goes to the other people since you shouldn't vote if you're not sure right?

trichoplax

Agreed - the blame goes to anyone who voted while unsure

Conor O'Brien

@cairdcoinheringaahing thank you for the permission

DJMcMayhem

@cairdcoinheringaahing 13 bytes

I didn't look at your submissions by the way

15 to count the number of doublings

caird coinheringaahing

@DJMcMayhem Returns 2 for 617283945

DJMcMayhem

And?

caird coinheringaahing

18:34

@DJMcMayhem It only needs to be doubled once

DJMcMayhem

Fine

caird coinheringaahing

Also, really doesn't work

DJMcMayhem

That's stupid

Ṿ removes leading 0's

caird coinheringaahing

Combining mine and yours, I have 27 bytes. Should I show or not?

Nevermind, didn't work for 123456.7890

Q: Are there any numbers which can't be doubled until all 10 digits are used at least once?

Conor O'Brien

hmmm

0

not what you meant tho

caird coinheringaahing

18:46

Should I ask that in the Maths room or not? I'm not sure if that would be too basic

trichoplax

I don't know how to prove it but I imagine that's the only one (zero, I mean)

Mr. Xcoder

@cairdcoinheringaahing You can give it a go in the maths chatroom

trichoplax

Maybe a clue here:

36

Q: Show that there are infinitely many powers of two starting with the digit 7

This is a contest math problem which I was not able to solve. A hint toward the solution would be helpful as well. Problem: Show that there are infinitely many powers of 2 starting with the digit 7. Thanks in advance.

Mr. Xcoder

@HyperNeutrino Now ≥ 300 :D

caird coinheringaahing

Well, I've released the mathematicians :P (no offence intended)

DJMcMayhem

18:56

@cairdcoinheringaahing I'd argue that making it support floats is a terrible design choice because it opens up lots of ambiguities. For example, you could say that 123456789 is equivalent to 123456789.0, so that should give 0, and you could also say that 0.123456789 is equivalent to .123456789, so that still needs to double

It's so much ridiculously simpler if you could just stick with ints

It's just an obnoxious edge case

Conor O'Brien

it's also completely redundant, since you can just multiply the decimal out

DJMcMayhem

^

Poke

any sql gurus in here

Pavel

SQL scares me a little

DJMcMayhem

@ConorO'Brien Except that will remove any leading zeroes, which is another (much more) annoying edge case

Pavel

18:59

@Poke I know LINQ, does that count?

Conor O'Brien

leading zeroes?

Poke

Trying to determine the main difference between a unique index and a unique constraint on a single column

caird coinheringaahing

@Pavel The shouting can be quite frightening :P

DJMcMayhem

@ConorO'Brien If you just multiply out, then an input like 0.123456789 will give the wrong result (which is a terrible design choice IMO)

Conor O'Brien

oh

I mean the leading zero isn't technically part of the digits

caird coinheringaahing

19:00

@DJMcMayhem @ConorO'Brien Thanks for the advice, challenge spec changed.

DJMcMayhem

@ConorO'Brien Yes, but caird is arguing that it is

@cairdcoinheringaahing Oh, cool

Conor O'Brien

not anymore it seems lol

caird coinheringaahing

@ConorO'Brien I am sorry if I came off in a bad light earlier, I was simply trying to help.

DJMcMayhem

So where is the challenge spec? I'd like to answer it now

Conor O'Brien

@cairdcoinheringaahing nonono I didn't think so, I was just confused and am honestly tired

caird coinheringaahing

19:01

@DJMcMayhem Typing up on phone atm

DJMcMayhem

And are we doing last integer, or number of doubles?

Oh, ok

caird coinheringaahing

@DJMcMayhem Number of doubles.

@ConorO'Brien OK, just checking as this seemed a little passive aggressive and I wanted to make sure that you weren't offended or anything.

Conor O'Brien

oh

I was ticked there lol I forgot about that

no harm done

caird coinheringaahing

Regarding this I could just make a brute forcer :P

DJMcMayhem

Oh yeah, you could totally brute force all integers

caird coinheringaahing

19:04

@DJMcMayhem Without TIO, and a quantum computer, easily :D

Conor O'Brien

do we have any test cases for the question

caird coinheringaahing

@ConorO'Brien Yes, but I'm reluctant to give any in chat, given that it does kind of give people here a head start on solving it. Try 2 => 67 if you really want one.

DJMcMayhem

Wait, are you going to main?

caird coinheringaahing

@DJMcMayhem Yeah, just need some numbers for test cases. hint hint :P

DJMcMayhem

Sweet

I think it's a cool idea

1234567890 --> 0
617283945 --> 1
2 --> 67
100 --> 51
42 --> 55

Conor O'Brien

19:08

wait how is 2 67? It's not 15?

oh wait is it until a number has all the digits

caird coinheringaahing

@DJMcMayhem Thanks. I'm terrible at thinking of corner cases for test cases

DJMcMayhem

Also, potential edge case: < 1 should never be given as input

caird coinheringaahing

> Given a positive integer greater than 0

Covered.

DJMcMayhem

> Given a positive integer that is positive...

caird coinheringaahing

@DJMcMayhem Mhm. Just to make sure :P

Conor O'Brien

19:11

given an integer greater than 0

AdmBorkBork

Are you positive it's a positive integer?

caird coinheringaahing

@AdmBorkBork As positive as a proton

code-golf math number enough?

Also, any suggestions for a name?

Conor O'Brien

Pandigital doubling

caird coinheringaahing

Aaand, posted!

Leaky Nun

Guess the place/country/whatever

caird coinheringaahing

19:17

@DJMcMayhem so you found it I guess? :P

DJMcMayhem

Yeah, but it wasn't on the home page for some reason /shrug

caird coinheringaahing

@DJMcMayhem shouldiblamecaching.com

@LeakyNun Random guess, but Netherlands?

Leaky Nun

@cairdcoinheringaahing guess again :P

people's guesses are interesting

caird coinheringaahing

@LeakyNun Can you give me a link?

:40007016 ಠ_ಠ As in to the Google Maps page?

Leaky Nun

@cairdcoinheringaahing of course not :P

or else it wouldn't be a guess

caird coinheringaahing

19:27

@LeakyNun Damn. Should've know you wouldn't have fallen for that :P

AdmBorkBork

Northeastern China

Leaky Nun

@AdmBorkBork close

surprisingly close

caird coinheringaahing

@LeakyNun Uulaanbaataar or how ever it's spelt?

Leaky Nun

@cairdcoinheringaahing nope, that's farther

caird coinheringaahing

@LeakyNun Korea?

North Korea?

Leaky Nun

19:28

@cairdcoinheringaahing which?

@cairdcoinheringaahing bingo

caird coinheringaahing

Pyongyang? :P

Leaky Nun

no, it isn't Pyongyang

New Main Posts

2

Q: Pandigital Doubling

Inspired by this CMC Given a positive integer greater than 0, perform the following operation on it: If all ten single digits (1234567890) are in the number at least once, output the count and exit the program Otherwise, double the number and repeat, incrementing the count. The count starts ...

code-golf math number

Leaky Nun

it's just a random place inside NK

caird coinheringaahing

@LeakyNun Have a go at this

AdmBorkBork

19:31

lol, my first one had a sign on the side of the road stating "East Tennessee Crossing Byway"

I got within 50 miles :D

caird coinheringaahing

All mine has is a sign saying "Dinosaur Trail" ಠ_ಠ

And it was in the middle of Canada. Too bad Australia isn't closer to North America

Leaky Nun

AdmBorkBork

Leaky Nun

for the first one (Sweden) I saw some indonesian words and some signs with icelandic letters and I'm thoroughly confused

caird coinheringaahing

@AdmBorkBork Wait, for real? How?

Leaky Nun

19:39

I saw restorang and kebab

AdmBorkBork

@cairdcoinheringaahing There was literally a sign saying "Woodlands Operation Centre" ... so I punched that into Google and boom, map of the location.

Leaky Nun

@AdmBorkBork lol cheater

AdmBorkBork

If I would've street view'd, I probably could've gotten within feet

caird coinheringaahing

I wonder what country this is:

Leaky Nun

@cairdcoinheringaahing lol I also saw an american flag in one of my rounds

AdmBorkBork

19:41

How is that cheating? I used what information they gave me.

caird coinheringaahing

Hah! I have a phone number in mine!

Got it. Carlsbad, NM.

AdmBorkBork

@cairdcoinheringaahing I've been there. Neat caverns.

caird coinheringaahing

ಠ_ಠ Google lied to me. It was Santa Fe.

AdmBorkBork

I've been there, too. They have regulations in place preventing skyscrapers, so every building in the city is like at most two or three stories.

caird coinheringaahing

geoguessr.com/results/L96RhoofoDZX4s7f

I'm crap.

AdmBorkBork

19:46

That's a nifty game.

caird coinheringaahing

Also, I found a non-blurred numberplate. Isn't that grounds for suing?

> Your guess was 41m (44.8 yd) from the correct location.

AdmBorkBork

Nice

My first round of my second game has me on some bicycle path somewhere :-/

caird coinheringaahing

@AdmBorkBork imgur.com/a/6WFLp

How about that? :P

AdmBorkBork

Well, it's someplace very flat

caird coinheringaahing

Colorado. 20 miles outside Denver.

AdmBorkBork

19:54

Yep, that place is pretty flat

Dang, 384 yards

caird coinheringaahing

Should we create a new room for this, or not? I feel like we're dominating an otherwise busy TNB :P

AdmBorkBork

12478 ... but I'm done. Back to work.

Fun game, though. I wouldn't mind a room for it.

caird coinheringaahing

@AdmBorkBork More Powershell golfing?

AdmBorkBork

More PowerShell non-golfing.

DJMcMayhem

20:17

@AdmBorkBork Totally. All those mountains and stuff

AdmBorkBork

Eastern Colorado is right next to Kansas and Nebraska, which are pretty dang flat. Once you get out of the Rockies, there's not much elevation change. landdevelopment.us/map-of-united-states-topographical.html

DJMcMayhem

True

caird coinheringaahing

I love the road I just landed on on the Guesser: "Bosstraat"

Helka Homba

@cairdcoinheringaahing I got 102km on first guess :D

Stephen

This game is always to best to rediscover every month

caird coinheringaahing

20:26

@HelkaHomba The best I've got is 40m by googling the pub I landed outside of :P

@Stephen Minecraft?

Stephen

@cairdcoinheringaahing No, the one you guys are talking about, GeoGuessr

caird coinheringaahing

@Stephen Yes, it is quite fun :P

flawr

Congrats to @Qutrix to the message number 40000000

in Room for Qutrix and vitidev, 6 hours ago, by Qutrix

понимаю

caird coinheringaahing

@flawr It really bugs me that he didn't know it was 40m :P

El'endia Starman

@flawr Beat you to it. :P

4 hours ago, by El'endia Starman

This is message 40000000:

caird coinheringaahing

20:33

Welp, I have to leave. Toodles! o/

AdmBorkBork

@flawr It's fun trying to remember my Russian from 17 years ago and sound out the word. I don't remember what it means, but according to Google my pronunciation was correct.

Poke

@flawr lulz, it was a fitting response to folks telling him the message number

flawr

:)

Poke

@AdmBorkBork what did you google to get the pronunciation but not the translation

AdmBorkBork

@Poke s/don't/didn't

Poke

20:37

roger

flawr

@AdmBorkBork dodn't?

DJMcMayhem

I dodn't know what you'res talking about

AdmBorkBork

That's even worse. :-/

caird coinheringaahing

Has anyone else ever gone to check the very first user to chat here?

DJMcMayhem

I believe it was CJY

AdmBorkBork

20:40

If it's not "Hello, World!" I am going to be very disappointed.

flawr

in Chat feedback, Oct 18 '10 at 9:14, by Feeds

All feedback welcome!

DJMcMayhem

Jan 28 '11 at 4:38, by Chris Jester-Young

tap tap tap Anybody here?

caird coinheringaahing

@AdmBorkBork Prepare to be disappointed

AdmBorkBork

Boo-urns.

El'endia Starman

@cairdcoinheringaahing Yes. Many times I'm sure. :P

caird coinheringaahing

20:42

I have to say, reading the chat reactions to some revolutionary questions (code trolling, underhanded, showcase etc) is quite funny.

Also, when (if) I reach 8128 rep, it must never change, because it will be perfect.

Mistah Figgins

It's probably easier to stay constantly at 6

Although less good

HyperNeutrino

Wait Alex A. is back? :D :D :D

caird coinheringaahing

As of now, Joe Z. has asked the top 2 most voted questions on the site

Mistah Figgins

hah

caird coinheringaahing

@HyperNeutrino So is Geobits :D

HyperNeutrino

20:56

:D

AdmBorkBork

@cairdcoinheringaahing And 3 of the top 6

3 of the top 4 if you get rid of the Community Wiki and the Closed questions

flawr

@HyperNeutrino Doesn't seem to be true

HyperNeutrino

> Last seen 1 hour ago

Alex A. ♦, Seattle, WA

21.7k 5 27 97

code-golf string math number arithmetic sequence number-theory

flawr

Well sure, but not here in chat.

caird coinheringaahing

Clearly Tetris GoL brought them back :P

Mistah Figgins

21:01

@JoeZ needs to update the top of his description of his tetris question in his clock question :)

Riker

@HyperNeutrino I always figured he was always semi-active

i.e. modqueue n similar

just not posting

HyperNeutrino

yeah

but last seen doesn't care about posts (then again background things often aren't logged and aren't visible to the community)

caird coinheringaahing

@Riker Before just now (1 hour again) he was last seen Jun 4th

Riker

hm, nvm then

Christopher 2EZ 4RTZ

21:13

@ASCII-only 30 min kick from caps so might as well :P

Wow don't buy the wrong dryer O-O

I need a challenge to answer in brain-flak @HyperNeutrino ideas?

HyperNeutrino

why me

Christopher 2EZ 4RTZ

Wait

You're not the brainflak person XD

lol

HyperNeutrino

21:29

wut lol

Christopher 2EZ 4RTZ

Wait are you

HyperNeutrino

did I seem like the brainflak person

that's DJ/WW

Christopher 2EZ 4RTZ

I realize that

HyperNeutrino

I made Brain-Flex which can run Brain-Flak, Brain-Flueue, and several other arbitrary ones :P

DJMcMayhem

@Christopher2EZ4RTZ Hmm, lemme think

How much of a challenge do you want?

Christopher 2EZ 4RTZ

21:30

Well I am bad at brainflak so a simple one

Or a medium challenge (one that makes me think)

DJMcMayhem

Do you want an actual challenge to answer, or just something for the fun of it?

Christopher 2EZ 4RTZ

Either is fine (I do want a actual challenge more but if you don't know of one a fun thing is fine )

Just trying to get good

DJMcMayhem

How about this one?

11

Q: Skip like a frog!

Given an array of non-negative integers, your task is to only keep certain elements of it, as described below. Let's say the array is [1, 3, 2, 4, 11, 5, 2, 0, 13, 10, 1]. First get the first element of the array, n. Keep the first n elements and discard the next one (discard the n+1th). The n...

code-golf array-manipulation integer

It might be waaaay harder than I thought cause I haven't tried it, but it might be easyish

Not sure yet

Lots of stack manipulation

Christopher 2EZ 4RTZ

I will do it

I am actually installing ruby so I can actually run BF without TIO XD

HyperNeutrino

oh I see a method for this

wait I misinterpreted the challenge

Christopher 2EZ 4RTZ

21:36

@DJMcMayhem thanks! I will most likely be in the third stack soon XD

ASCII-only

@Christopher2EZ4RTZ ... You can write an interpreter in any language

@Christopher2EZ4RTZ huh?

DJMcMayhem

@ASCII-only Yes, but the official brain-flak interpreter is in Ruby

I picked Ruby cause I'd been wanting to learn it for a while, and implementing an easy-ish esolang seemed like a good oppurtunity

To this day, it's the only thing I've written in ruby, lol

Christopher 2EZ 4RTZ

@ASCII-only click the reply

ASCII-only

@El'endiaStarman oh hey you're in TNB again

Christopher 2EZ 4RTZ

He has been here for a while :P

HyperNeutrino

21:38

@DJMcMayhem Hints for comparison in Brain-Flak?

(Like a < b)

ASCII-only

@DJMcMayhem but. Aren't almost all the other interpreters faster

Christopher 2EZ 4RTZ

@Pavel It is in rep gain :P

ASCII-only

@Christopher2EZ4RTZ I just got back online

Christopher 2EZ 4RTZ

I am the #1 rep earner this week :DD

DJMcMayhem

@ASCII-only Definitely. Ruby has a lot of overhead, and doesn't do any optimizing. Crane-flak and haskell both have waaaay less overhead, and WW's next haskell one is supposed to optimize the crap out of it

@HyperNeutrino Oh man, that's really hard

ASCII-only

21:40

@DJMcMayhem well you can make a really fast one in Ruby too

Christopher 2EZ 4RTZ

So now I need haskell XD

DJMcMayhem

TBH, I've never directly implemented that myself, I typically just use one from the wiki

Christopher 2EZ 4RTZ

10/10

ASCII-only

Pretty sure most of the overhead is because it wasn't done too well >_>

HyperNeutrino

@DJMcMayhem so I'm guessing that that's not how I'm meant to do this challenge? :P

DJMcMayhem

21:41

idk

I haven't even tried it or anything

HyperNeutrino

o lol

DJMcMayhem

@HyperNeutrino Here's a start

HyperNeutrino

thanks

Christopher 2EZ 4RTZ

CMC: in BF do A>B

HyperNeutrino

well a < b <=> a - b < 0

Christopher 2EZ 4RTZ

21:42

I just realized one problem I was having in BF can be solved ez pz with <...>

ASCII-only

Like IIRC the way it was interpreted looked pretty slow

HyperNeutrino

@Christopher2EZ4RTZ ({}[{}])([({}<(())>)](<>))({({}())<>}{}())<>{}{}<>{({}<({}<>)>[()])}{} ripped most of it off of the wiki

ASCII-only

@Christopher2EZ4RTZ >[.<.>]

DJMcMayhem

@Christopher2EZ4RTZ Haha, nice. <...> are super valuable. What was it?

Christopher 2EZ 4RTZ

@DJMcMayhem It was a if(!=0)do this

@DJMcMayhem that is why I hate mini-flak (despite learning that first XD)

DJMcMayhem

21:44

@Christopher2EZ4RTZ Mini-flak can do the same thing. It just isn't as convenient

HyperNeutrino

<...> can be replaced with (((...))[{}]) right?

DJMcMayhem

Instead of <...>, you can do (...)[{}]

Close

HyperNeutrino

oh it's a lot simpler than I thought

:P

wait I need to remove outside brackets otherwise it pushes it :P

wait is Mini-Flak just Brain-Flak without <>?

DJMcMayhem

Yeah, because (...) evaluates to ..., and then pushes it, but [{}] pops it off and then evaluates to 0 - ..., and clearly ... + -... == 0

Christopher 2EZ 4RTZ

@DJMcMayhem Yeah

HyperNeutrino

21:45

ah ok

Christopher 2EZ 4RTZ

Anyways i gtg to dinner

Bye o/

HyperNeutrino

o/

DJMcMayhem

@HyperNeutrino Brain-flak without <...>, <>, or [] (it still has [...] though)

HyperNeutrino

ah ok

wait no stack height :(

wait so it only has one stack?

DJMcMayhem

Yes and yes

So it's not exactly a convenient language to use

HyperNeutrino

21:47

ah ok

but still T-C?

DJMcMayhem

Apparently

HyperNeutrino

huh

also every time I see the Tentree logo it reminds me of TIO lol

ok rip I have no idea how to do this challenge in BrainFlak :( :P

DJMcMayhem

Haha, sorry

I can pick an easier one

Have you done increments?

HyperNeutrino

nope

increments as in deltas as in differences as in Jelly's I right?

DJMcMayhem

Exactly

HyperNeutrino

21:51

ok thanks

i'll try it rn

Conor O'Brien

CMC: given a floating point number, output "Not Valid" if the number is not between 0 and 100 inclusive, "Valid" otherwise. (note, this is from a previous assignment in my CS class, already done.)

DJMcMayhem

@ConorO'Brien Will it always be >=0?

Conor O'Brien

nope

any valid floating point within the float/double/your languages range

HyperNeutrino

@DJMcMayhem I tried []{<{}>({}[({})]<>)<>[]}<> but it's behaving in a manner I don't quite get. For 1 3 7 5 it gave 5 -4. Do you have any idea what this does?

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