The Nineteenth Byte

9:00 PM

@Riley I've already worked a few hours on it, and I've looked through the list of commands a few times, but I still can't figure it out.

DJMcMayhem

Try it online!

Business Cat

Retina, 8 bytes

mbomb007

I must've seen the command and not known how it works on lists or something

Business Cat

(doesn't work if there's ever two apostrophes in a row)

DJMcMayhem

I wonder if there are any other languages that have a < 6 byte answer

Riley

9:02 PM

@mbomb007 Like Emigna said, it's a feature of the language that you probably aren't familiar with (I've never actually used it before and I've only seen it used once). How much of a hint do you want?

betseg

@DJMcMayhem probably Jelly

mbomb007

@Riley Well, I'm fairly certain that I have to remove }. I tried using both flatten commands. Maybe a small hint?

Business Cat

@betseg CJam, 13 bytes: q{_''=!{\}|}%

Check Out Tomato

Vote: What should I change my username to next

Okx

Check Out Potato

Check Out Tomato

9:05 PM

Strawpoll in a minute

mbomb007

@CheckOutTomato Not a Fruit

Check Out Tomato

@Okx My username is about my new programming language

Riker

yes

that doesn't stop you from becoming "Check Out Potato" however

Okx

Check Out Jelly A Language That Cheats

mbomb007

@CheckOutTomato That seems almost offensive

betseg

9:07 PM

^

Business Cat

Change it to "Click my name" and then your profile says "Thanks for clicking"

betseg

Check Out Cash In

Okx

Change it to "Don't Click My name" and put a screamer on your profile

Check Out Tomato

strawpoll.me/12490464

DJMcMayhem

@CheckOutTomato TBH, "Check out tomato" is an extremely obnoxious name. If it was just a tad worse it would be spam and you would probably get punished for it, but since it technically isn't breaking any rules, no one can do anything about it. I know it bothers a lot of people who haven't said anything

9

Downgoat

9:09 PM

@Riker because you didn't cocapod correctly

Riker

how cocapod good

DJMcMayhem

I'd recommend changing it to basically anything else

Check Out Tomato

@DJMcMayhem Why is it obnoxious? Also, how would it be "worse"?

Anonymous

FWIW I think it is spam

Anonymous

@DJMcMayhem inb4 "basically anything else"

Anonymous

9:10 PM

Mar 3 at 4:34, by Mego

Changing your username to promote a product is borderline spam imo

mbomb007

@CheckOutTomato Bc it's not much different than "check out my website"

Check Out Tomato

@mbomb007 It's not like I put ads on it or something

Riley

@mbomb007 Now that I think about it, the documentation wouldn't tell you that this feature works this way. I only knew that it did this because I happened to see it used before.

DJMcMayhem

> "Advertisement" -- noun: a notice or announcement in a public medium promoting a product, service, or event or publicizing a job vacancy.

Okx

CMC: Write a program that outputs 'Check Out <FRUIT>' and <FRUIT> will randomly be replaced with either "Banana", "Tomato", "Apple" or "Avocado"

DJMcMayhem

9:11 PM

That's exactly what it is

Downgoat

@Riker you just gotta installs the cocoapods

Riker

ok

Check Out Tomato

IMO spam == commercial content or something that makes money, like a website with ads or a product

Riker

will do later

AdmBorkBork

@Mego Huh. I didn't realize that Tomato actually referred to something specific. I just thought it was a username.

Anonymous

9:11 PM

@CheckOutTomato It doesn't have to be commercial to be spam by the SE definition

mbomb007

@Riley I mostly have been experimenting. I found a feature that might have been unknown before:

Joshua

Maybe people will learn to stop posting least distinct bytes problems.

Anonymous

"Check Out GNU" would be just as spammy

mbomb007

@Adnan I found a way to do it. Create another list that has the value to assign also at the nth index. Then merge the lists using ñ preceded by the value of n (the index). tio.run/nexus/05ab1e#@2/iw2XiE2Tio81ldHjj//8A — mbomb007 13 mins ago

Check Out Tomato

@Okx Ruby: puts"Check Out #{%w(Banana Tomato Apple Avocado).sample}"

Riker

9:12 PM

@Okx "Banana""Tomato""Apple""Avocado"."Check Out "X|X

FOG code

TuxCopter

@Okx Ruby: puts"Check Out #{%w[Banana Tomato Apple Avocado].sample}"

Dammit ninjad

but mine is shorter

Riker

48 bytes

@TuxCopter by 1 byte

@CheckOutTomato first answer of same length wins

Check Out Tomato

No idea why you can remove the space after puts

@Riker ehhh

DJMcMayhem

@CheckOutTomato You don't have to change it. I just wanted to let you know that some (many) people find it annoying, and it would greatly improve people's opinion of you if you changed it back

3

TuxCopter

@CheckOutTomato pls

Check Out Tomato

9:13 PM

his answer was basically mine with a space removed

all right

Riker

yeah, but it came in first :P'

TuxCopter

What?

Riker

... since when?

TuxCopter

irb(main):002:0> puts"Check Out #{%w[Banana Tomato Apple Avocado].sample}"
Check Out Tomato
=> nil

Riker

rikermacbookpro:~ rikerw$ irb
2.3.0 :001 > puts"Check Out #{%w[Banana Tomato Apple Avocado].sample}"
Check Out Tomato
 => nil
2.3.0 :002 > puts"Check Out #{%w[Banana Tomato Apple Avocado].sample}"
Check Out Banana
 => nil
2.3.0 :003 > puts"Check Out #{%w[Banana Tomato Apple Avocado].sample}"
Check Out Avocado
 => nil
2.3.0 :006 > puts"Check Out #{%w[Banana Tomato Apple Avocado].sample}"
Check Out Apple
 => nil
2.3.0 :007 >

Check Out Tomato

9:14 PM

nm, mixed up the word array syntax

I thought it needed parens instead of brackets

TuxCopter

%w accepts a lot of separators

Helka Homba

@DJMcMayhem Note that I changed my name from Calvin'sHobbies to HelkaHomba in part to promote my youtube channel (but also as a wider shift to a more unique and consistent internet username). Though I agree "Check out X" is a tad more blatant.

Riker

mine is still shorter ;P

Check Out Tomato

OK, so the consensus is either wat or clever username?

Business Cat

CJam, 46 bytes: "Check out ""Banana Tomato Apple Avocado"7/mR

mbomb007

9:17 PM

@CheckOutTomato Or just brainstorm for a while and think of one yourself. You can only change your username once per month.

DJMcMayhem

@HelkaHomba Yeah... That seems different somehow. Like I use DJMcMayhem for literally everything (GitHub, steam, imgur, reddit, video games, etc.). And you consistently use Helka in a lot of places

Check Out Tomato

@mbomb007 I'll think about it

Riker

@BusinessCat -.-

mbomb007

@Riker Were you going to give a hint, or did I miss it?

Business Cat

Mine is shorter now

Riker

9:18 PM

@mbomb007 hint to what

the torah comment?

DJMcMayhem

@CheckOutTomato You can ask a PPCG mod to change your name also if you don't want to wait out the month

Riker

or something different

Check Out Tomato

I can change it to an anagram of check out tomato?

Meh

mbomb007

16 mins ago, by Riley

@mbomb007 Like Emigna said, it's a feature of the language that you probably aren't familiar with (I've never actually used it before and I've only seen it used once). How much of a hint do you want?

Check Out Tomato

new.wordsmith.org/anagram/…

I like "Cake Touch Motto"

Riker

9:19 PM

@mbomb007 not me

that's riley

@Riley vs @Riker

sorry about the name confusion :P

Pavel

I liked 'Easterly Irk' more

Riker

<shrug>

I'll consider changing it, no promises though

Riley

@mbomb007 My last comment was trying to be a hint. Look for features of the language, not necessarily a specific command.

mbomb007

Oh okay

Helka Homba

CMC: Given two integers a, b output true if a-b (a minus b) is in a-b (the inclusive integer range a through b), else output false.

Riley

9:21 PM

Although, it is just one command that you're missing.

@Riker I like riker

so do I

^^

@Riker Wait, you're Easterly Irk?

Riker

yes

mınxomaτ

9:21 PM

Potatoes on Mars: potatoes.space/mars

Riker

hahaha

mbomb007

I never catch name changes

Riker

@mbomb007 I changed my username to my IRL name

Pavel

@HelkaHomba Can we assume A>B?

mbomb007

I prefer Easterly Irk, but I think I can remember Riker. Irk is in Riker, after all

Check Out Tomato

9:22 PM

@HelkaHomba Ruby: ->a,b{a-b===(a..b)}

Riker

lol

Helka Homba

@Pavel no. They may be any two integers

AdmBorkBork

@HelkaHomba PowerShell 28 bytes

Check Out Tomato

@HelkaHomba Please give example

Pavel

@HelkaHomba So should we always do a-b or can we do the positive difference?

DJMcMayhem

9:24 PM

@mınxomaτ mark Watney would be proud

AdmBorkBork

(mine might break if the difference between a and b is too large)

Okx

@HelkaHomba 05AB1E, 6 bytes: -²¹ŸåO

betseg

@CheckOutTomato 3,1->true 1,3->false

Helka Homba

@CheckOutTomato e.g. A = -20, B = -10, Then A-B = -20+10 = -10. A to B = -20, -19, -18, ..., -11, -10. Outputs true.

Or A = 4, B = 1. A-B = 3. A to B = 4, 3, 2, 1. Outputs true since 3 is in the list

Check Out Tomato

@HelkaHomba Ruby: ->a,b{(a..b)===a-b}

Fixed

Helka Homba

9:27 PM

Could make as real challenge if people want

DJMcMayhem

Sounds fun in brain-flak

AdmBorkBork

Nope, different approach -- param($a,$b)($a-$b)-ge$b, 24 bytes

Check Out Tomato

@HelkaHomba trivial...

Helka Homba

Somewhat

Riley

@HelkaHomba 05AB1E 5 bytes: Ÿ²¹-å

@Okx That's exactly what I started with :)

Okx

9:29 PM

haha

AdmBorkBork

Wait, nvm, my new one doesn't work if a>0 and b<0

Check Out Tomato

Would "Cake Touch Motto" make a good username

Ehh...

no

no

9:32 PM

it makes no sense

AdmBorkBork

Neither does AdmBorkBork ...

Riker

anagrams don't work if they 1. don't sound cool 2. don't make sense

@AdmBorkBork yours sounds cool though

mınxomaτ

Holy thermal throttling batman.

Riker

@mınxomaτ omg that url is beautiful too, I just noticed.

AdmBorkBork

@Riker Aw, thanks.

user165474

9:38 PM

Is there a limit to how often you can change your display name?

Okx

0.48 ghz op

mbomb007

@HyperNeutrino Once per month

Okx

in 1980

user165474

@mbomb007 Oh, okay. Thanks. And yeah, it would make sense why it can't contain a diamond (so many fake mods...)

mbomb007

Once changed, you can't change it for 30 days.

Conor O'Brien

9:39 PM

@AdmBorkBork haha, thanks. 'tis one of my favorite batch golfs lol

AdmBorkBork

Kinda? You can skirt around it by changing which "parent" account is linked to your "chat" account. But you can only do that so often.

mınxomaτ

GIF that shows it's own md5

14

New Main Posts

0

Q: Verify the queens puzzle

If you don't know what a queen is in chess, it doesn't matter much; it's just a name :) Your input will be a square of arbitrary width and height, containing √(area) 'queens'. As the shape is a square, the amount of 'queens' will always be a natural number. The input board will look like this (t...

AdmBorkBork

Jun 20 '16 at 7:03, by Geobits

So on SO I'm Bigtoes, on PPCG I'm Geobits. Several others around the network.

@Okx I'm flabbergasted that we haven't had that as a challenge...

Okx

lol

@AdmBorkBork I checked for dupes, but most of them were closed and weren't actually verification ones

AdmBorkBork

9:51 PM

@Okx In chess (and chess programming), "diagonal" means south-west to north-east, and "anti-diagonal" means south-east to north-west. They're considered different terms.

Okx

the wikipedia definition said otherwise... I should edit wikipedia

AdmBorkBork

Some of it comes from matrix notation as well

Adnan

@HelkaHomba 05AB1E, 4 bytes: Ÿ¹Æå.

user165474

Yeah matrix notation would make sense for the explanation here, so like diagonal matrices are just a combination of row-products applied to I.

Mistah Figgins

@Okx Oops, missed that section. Thats what I get for reading fast :P

or in this case, not reading at all

Adnan

9:58 PM

@mınxomaτ huh, but how?

mınxomaτ

Precomp attack probably (Nostradamus?)

mbomb007

@Riley Is the feature/command I'm missing one for an ASCII command, or non-ASCII?

Riley

@mbomb007 It's in the Extended ASCII characters section

Conor O'Brien

CMC: compute a monus b (strictly nonnegative subtraction)

DJMcMayhem

> monus

Conor O'Brien

10:03 PM

yes, that's what it's called

Monus

In mathematics, monus is an operator on certain commutative monoids that are not groups. A commutative monoid on which a monus operator is defined is called a commutative monoid with monus, or CMM. The monus operator may be denoted with the − symbol because the natural numbers are a CMM under subtraction; it is also denoted with the ∸ symbol to distinguish it from the standard subtraction operator. == Notation == == Definition == Let ( M , + , 0 ) {\displaystyle (M,+,0)} be a commutative monoid. Define a...

DJMcMayhem

Oh, I though you typoed minus lol

Conor O'Brien

hah yeah

Mistah Figgins

Compute a minus b is not a very good CMC

Conor O'Brien

did you read the entire message, all 7 words? >_>

> (strictly nonnegative subtraction)

DJMcMayhem

@ConorO'Brien s2.quickmeme.com/img/4d/… (no onebox)

2

Riley

10:05 PM

@ConorO'Brien 05AB1E 3 bytes: -0M

betseg

@ConorO'Brien C, 22 bytes

user165474

@ConorO'Brien Python 28 bytes: lambda x,y:int(x>y) and x-y I feel sad for getting beaten by C ;_;

mbomb007

@Riley Sigh, that's what I figured

betseg

@HyperNeutrino lol

Conor O'Brien

@HyperNeutrino does dropping int work? since True and False act as 1 and 0

user165474

10:08 PM

@betseg yes :P nice job. Also, I would've used ternaries but they're so expensive in Python...

DJMcMayhem

@HyperNeutrino (if I understand correctly) couldn't you do max(0,x-y)

user165474

@ConorO'Brien I don't think so; I tried it and the answer for x <= y gives False and x > y gives a number

Conor O'Brien

oh, hm

try dj's suggestion

user165474

@DJMcMayhem Oh... um...

user165474

im dumb

user165474

10:09 PM

lol :P

user165474

Yeah, that is a much better solution.

betseg

Plz don't give golfing suggestions ;_;

Conor O'Brien

another solution without builtins:

lambda x,y:[0,x-y][x>y]

user165474

Python 22 bytes: lambda x,y:max(0,x-y)

user165474

@ConorO'Brien Hm, yours is only 2 bytes longer than DJ's.

betseg

10:10 PM

Still doesn't beat C lol

Adnan

@ConorO'Brien SWI Prolog: m(A,B,R):-A<B->R=0;R is A-B..

user165474

@betseg lol yeah, but at least it's tied. :P

Helka Homba

0

Q: If A-B be in A-B A else B eh?

Given two integers, A and B, output A if A-B (A minus B) is in A-B (A to B), otherwise output B. "A minus B" is standard subtraction. "A to B" is the range of integers starting at A and ending at B, including both A and B. For example: 1 to 4: 1, 2, 3, 4 -2 to 5: -2, -1, 0, 1, 2, 3, 4, 5 3 to ...

code-golf math number arithmetic

Conor O'Brien

@HelkaHomba why not just output true/false?

Okx

@HelkaHomba I don't really like challenges that can be solves in < 10 bytes, they don't have much room for variation

Mistah Figgins

10:12 PM

Befunge: &&-:0\`!*.@ 11 bytes

Helka Homba

@Okx I think this has variation. You can just check if the number is in a created range list, or you can be more mathy

Mistah Figgins

Essentially (x-y) * (x - y > 0)

Helka Homba

And simple challenges always give people a chance to use more esoteric languages which is nice

DJMcMayhem

@HelkaHomba That is one Hecka confusing title

And it'll be much harder than I thought, considering that a can be smaller or larger than b

New Main Posts

3

Q: If A-B be in A-B A else B eh?

Given two integers, A and B, output A if A-B (A minus B) is in A-B (A to B), otherwise output B. "A minus B" is standard subtraction. "A to B" is the range of integers starting at A and ending at B, including both A and B. For example: 1 to 4: 1, 2, 3, 4 -2 to 5: -2, -1, 0, 1, 2, 3, 4, 5 3 to ...

code-golf math number arithmetic

Helka Homba

10:16 PM

@ConorO'Brien Hoping that plainly implemented answers would necessarily be a longer thereby

Conor O'Brien

right, but that adds nothing to the challenge, it only obscures the challenge's purpose

DJMcMayhem

CMC: absolute difference in brain-flak.

I can do 32, I want to see if anyone can do better

Does not need to be stack clean

Actually, I guess mine can be made stack clean for only four more bytes

Mistah Figgins

meaning |a - b|?

DJMcMayhem

Yeah

mbomb007

@Emigna Is this close enough? tio.run/nexus/05ab1e#@x8a4Rbh4xehpe1n5BQcZJgdnxlUa/v/vykA

DJMcMayhem

10:19 PM

Actually, let's make it simpler and more useful. Absolute value

I can do stack clean in 32: (([(({}))]<>)){({}())<>}{}{}<>{}

Mistah Figgins

How would you do greater than in the shortest way possible?

Conor O'Brien

which format should I use for a simple config? I was thinking JSON but Java doesn't have anything buillin for that, and I want to avoid using libraries

Destructible Watermelon

I was thinking of having an anagram name

Adnan

@mbomb007 for what is that?

mbomb007

17

Q: Cops: Crack the regex - Make a snake

This is the cop's thread. The robber's thread is here. Write a code that takes an input n and creates a n-by-n "snake matrix". A snake matrix is a matrix that follows this pattern: 3-by-3: 1 2 3 6 5 4 7 8 9 and 4-by-4: 1 2 3 4 8 7 6 5 9 10 11 12 16 15 14 13 The exact outpu...

regular-expression cops-and-robbers matrix

DJMcMayhem

10:23 PM

@MistahFiggins Well... There's this, but I'm sure there's something better

in The Third Stack, Oct 30 '16 at 1:52, by Wheat Wizard

http://brain-flak.tryitonline.net/#code=KFsoe308KCgpKT4pXSg8Pikpeyh7fSgpKTw-fXt9‌PD57fXt9PD4oKHt9KSl7KDx7fSh7fTw-KT4pfXt9KHt9PD4p&input=LTI0&args=LWQ&debug=on

Jan Dvorak

@ConorO'Brien Use XML. I'm not afraid to use Nokogiri to deal with your ...

Adnan

@mbomb007 is something like UXFXLNX*+N2BSR1k_iR}ˆ also possible? :p

Jan Dvorak

Or, better yet, JSON

Conor O'Brien

>_> read the last part of that message plz

Destructible Watermelon

@DJMcMayhem when was the last time you made a pun about Dr Seuss and/or ham

Jan Dvorak

10:25 PM

I did. My suggestion holds.

Conor O'Brien

thanks, but it doesn't, unless you want me to roll my own JSON parser

DJMcMayhem

@DestructibleWatermelon A long time ago unfortunately

mbomb007

@Adnan Ah. Yeah, that's the spoiler that Riley was giving me a hint for

Well, thanks.

I didn't know what the global array was

Jan Dvorak

how about good ole ini?

Destructible Watermelon

at least be DjMcMayham

Conor O'Brien

10:26 PM

@JanDvorak does java have an ini parser builtin?

Jan Dvorak

split by lines, then by equals

Conor O'Brien

oh, true

Adnan

@mbomb007 yeah, I should really write a wiki

mbomb007

Also, reading through your source code is difficult because I see something like elif current_command == "\u00d3" and I don't know which that one is

It'd be nice if the actual character was there or in a comment or something

Helka Homba

@JanDvorak Are you the one who convinced @DJMcMay and @Riley and so many others to never take their hats off? (You've been falconface as long as I can remember.)

Jan Dvorak

10:29 PM

Not intentionally.

Adnan

@mbomb007 Yeah, looking back a year after making 05AB1E, there are a lot of things I could have done better.

but now it's just laziness

DJMcMayhem

@HelkaHomba Nah, I just really liked being The mad Catter in the hat

Helka Homba

@DJMcMayhem From a distance your avatar looks like roughly like a flamenco dancer.

Jan Dvorak

poll: do you prefer flamenco dancers, or flamingos?

Helka Homba

flamenco dancing flamingos

Conor O'Brien

10:36 PM

flamenco dancers dressed as flamingos, flamenco dancing with flamenco dancing flamingos dressed as flamenco dancers

flamin' flamingos

lol

flamingo dancer

CMC: In brainfuck, increment a given input number by 1 (eg 1599 -> 1600) (this might take a while)

no searching pre-existing algorithms

DJMcMayhem

+

Jan Dvorak

10:45 PM

+

Conor O'Brien

> input number

ETHproductions

(I think the point is that it has to be arbitrary precision)

Conor O'Brien

and ^

Jan Dvorak

I input numbers as numbers

DJMcMayhem

,+.

Jan Dvorak

10:47 PM

oh, right. I was providing a function

Okx

That doesn't work everyone, it doesn't take STDIN, it doesn't change the actual numeric value, just the ASCII value

Jan Dvorak

I input numbers, not characters

Okx

CMC: Take a number from STDIN, and output that value incremented by one. Eg. with the input '1599' you should output '1600'

more detailed

Jan Dvorak

"in decimal"?

Helka Homba

too unmini

Conor O'Brien

10:52 PM

J, 15 bytes echo>:".1!:1(3)

Jan Dvorak

main=readIO>>print.(+1)

Ruby:p gets.to_i+1

Mistah Figgins

What happens when there is no more input in BF?

Does it just put 0 in the current cell?

Riley

@HelkaHomba I didn't know anyone else was doing it when I started.

Okx

CMC: Take a number from STDIN, and output that value incremented by one. Eg. with the input '1599' you should output '1600'
in brainfuck this time :P

forgot to mention

@MistahFiggins you can just do a loop to get the input like this: ,[,>]

Mistah Figgins

Thats what I had assumed, but I wasn't sure

@Okx wouldn't it be ,[>,]?

Okx

11:11 PM

oh yeah

ATaco

Does it have to be STDIN?

Okx

yes

ATaco

RProgN-2 Can't read STDIN :(

read ~1+_ works in RProgN1 though.

ASCII-only

@Okx Charcoal, 4 bytes: Ｉ⁺¹Ｎ

Okx

11:26 PM

I said brainfuck

lol

ETHproductions

@ASCII-only I was about to say "this is impossible with Crayon, I haven't implemented + yet", but then I realized I have implemented increment ())

ATaco

I'll see what i can do in BF...

ETHproductions

But wait... it is impossible, I haven't implemented a convert-to-number command yet

(well I have, but I haven't committed it)

ASCII-only

@ETHproductions D:

Downgoat

@Okx print Number::IO.prompt() + 1

ATaco

11:29 PM

Needs to be in BF.

Downgoat

@ETHproductions well then it's non-competing ;P

New Main Posts

1

Q: You Are the User: Create the Requirements

My boss* does not understand why her programmers react negatively to users changing program requirements. Help her understand! On every answer, create a new requirement. Then, write a program/function that solves that requirement and all prior requirements, while in a new programming language. Th...