The Nineteenth Byte

orlp

8:00 PM

the problem IMO is that his channel is a blog + educational/interesting videos combined

Nathan Merrill

I'm ok with the bloggy part.

that said, I also watch vlogbrothers

so, I'm also into those kind of videos

flawr

I find them reather annoying=)

orlp

I really could not care less about those vblogs :P

flawr

Anyone watching the brain scoop?

orlp

@flawr never heard of them

carsandwater

FryAmTheEggman

8:01 PM

@BusinessCat retina.tryitonline.net/…

TimmyD

PressTube

New Meta Posts

0

Q: Classification of code challenges

We've got a bunch of code-challenge problems. Furthermore, a lot of them have a bunch of similarities in their scoring systems. I've taken the first 50 of them (excluding off topic), and classified them: Accuracy based: You need to estimate the correct answer based on your input. Your score...

discussion

flawr

@orlp taxidermy and a lot of other stuff of the fields museum: youtube.com/user/thebrainscoop

Nathan Merrill

oh! Vihart!

TimmyD

Yuss

Martin Ender

8:04 PM

@NathanMerrill done

Nathan Merrill

thank you!

New Main Posts

1

Q: Automatic box expander

Introduction Sometimes, my boxes are too small to fit anything in it. I need you to make a box expander! So, what makes a box a box in this challenge. OOOO O O O O O O OOOO The corners of the box are always spaces. The box itself can be made out of every ASCII character, except a s...

code-golf ascii-art

flawr

@NathanMerrill gotten quite nonsensefull recently

3Blue1Brown

Cody'sLab is quite cool too=)

Anonymous

8:20 PM

@Sherlock9 It most definitely is not

Downgoat

halp, how should I represent merge in info graphic

Anonymous

@Sherlock9 : is just a prefix now - your example should be :144, not :144:.

Downgoat

^ what i have so far

Nathan Merrill

If you are having trouble coming up with a challenge idea, generate a random 3-4 character Jelly program, figure out what it does, then post it

5

Downgoat

@NathanMerrill random jelly program generator in cheddar: IO.open("/dev/random", 'r').read(4)

flawr

8:23 PM

Or take a random OEIS based on a simple recurrence relation

Or post a random ascii-art shape as a fixed output komolgorov complexity challenge

orlp

@flawr we should renamed our site

oeisgolf.stackexchange.com

flawr

Why don't we make a bot that post one OEIS sequence every hour. beginning at A0000001

3

Downgoat

how should I represent putting something under another in a picture?

an arrow doesn't seem right

flawr

a double arrow?

Downgoat

:/ imo doesn't look like putting undeneath

flawr

8:34 PM

Tripple arrow?

Nathan Merrill

and arrow beneath a line

(like going underground)

flawr

how about an arrow that goes down and then right

and the thing that should be below just at the end of the arrow

New Main Posts

3

Q: Numbers of purity

Today we'll look at a sequence related to the Collatz sequence. The first number in the sequence, a(1), is 0. It falls into a cycle 0 -> 0 -> .... The smallest number we haven't seen yet is 1, making a(2) = 1. It falls into a cycle 1 -> 4 -> 2 -> 1 -> .... Now we have seen the number 2 in the...

code-golf number-theory

Downgoat

@NathanMerrill can you give example?

flawr

Downgoat

8:38 PM

hm :/

Nathan Merrill

---|
___|___
   |
   v

Downgoat

@flawr like that ^?

flawr

@Downgoat The title is somewhat contradictory to what you're actually showing=)

But generally yes!

Nathan Merrill

@MartinEnder duplicate comment.

Martin Ender

yeah, not sure what's going on with my internet connection

I tried posting it and the tab kinda hung up so I reloaded and posted the comment then. a few seconds later I got "show 1 new comment" and it was actually the second copy of my own comment o_O

Eᴀsᴛᴇʀʟʏ Iʀᴋ

8:49 PM

Martin Ender

what game is that?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

no man's sky

just looking at the reviews, apparently it has horrible fps and most people can't even start it

Optimizer

lol. story of every new game on your computer

no man's sky is an awesome game.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@zyabin101 lel nice one

@Optimizer have you tried it?

Optimizer

yes. but i dont have it.

plus my laptop cant run it either.

Rainbolt

8:53 PM

Why would you rate a game poorly that your machine can't even run properly?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Optimizer how?

@Rainbolt exactly, that's literalyl most of the reviews

Optimizer

@EᴀsᴛᴇʀʟʏIʀᴋ umm. friends? have you heard of them ..

Rainbolt

Well... unless the recommended specs on their website are lower than you actually need. Then I would rate them poorly.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Optimizer i didn't realize it was that popular yet, kk

@Rainbolt to be fair, the minimum specs are pretty high, and it still doesn't run on them

i'm just wondering how they managed to test it

Optimizer

oh. ppl have been waiting for it to launch for so long

Rainbolt

8:55 PM

@EᴀsᴛᴇʀʟʏIʀᴋ They probably figured the minimum specs halfway through dev and never updated it

Eᴀsᴛᴇʀʟʏ Iʀᴋ

true

@Optimizer yeah, including me. I just don't have the monies.

and they don't accept internet points

Downgoat

how is this?

Nathan Merrill

I'd totally take the dev's machines and find the lcd

to make the specs

Optimizer

@Downgoat why do you like top so much ?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@thepiercingarrow Phrancis is i think?

@Lynn cough cough

flawr

8:58 PM

@Downgoat Perhaps it would help if they would already overlap somewhat

Martin Ender

@EᴀsᴛᴇʀʟʏIʀᴋ preordered it for PS4, but I won't be able to play until the week after next, I think

Eᴀsᴛᴇʀʟʏ Iʀᴋ

okay

let us know how it works out!

Optimizer

it would definitely work on PS4.

Martin Ender

sure... well actually, 80% of the hype for me was the soundtrack, and I got that last week already and it's absolutely amazing. so even if the game turns out to be mediocre, I guess I won't really mind :D

@Lynn let me know if I can be of assistance ;)

orlp

chat mini-challenge in C

golf this C code

char b[]="rnbqkbnrpppppppp PPPPPPPPRNBQKBNR";

so far I've been unsuccesful..

FryAmTheEggman

9:03 PM

Are the blanks only space characters?

orlp

yes

those are 32 spaces to be precise

Downgoat

@flawr them overlapping looks odd :/

how's this:

FryAmTheEggman

@orlp ideone.com/E0HdrT

5 shorter, I think

flawr

@Downgoat How about a shadow for the arrow such that you really can see the levels?

FryAmTheEggman

Oh, actually the 32 should be 48, my bad

Same length though :P

ΛεγίωνΜάμμαλϠΨΠʹ

9:08 PM

Question: How does one obtain the exact timestamp of a Chat.SE message?

FryAmTheEggman

Oh, and the size of the array needs to be 80...

shh I'm good at C

trichoplax

@ΛεγίωνΜάμμαλϠΨΠʹ To the left of a chat message a drop down menu will appear if you hover. From there you can select "permalink" which will take you to that message in the transcript, showing a time. To the left of the message in that transcript, the drop down menu will give you a "history" option, showing the times at which the message was posted and (possibly) edited.

That's only to the nearest minute though.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

De-Parenthesize Ruby Reuben is wants to start programming and golfing in Ruby. However, since he learned programming from his siblings Cecil and Emma, who program in C and EMCAScript respectively, he's developed a habit of adding parentheses to all sorts of functions when he doesn't need to. How...

ΛεγίωνΜάμμαλϠΨΠʹ

@trichoplax ik, asking about to the second

Martin Ender

@trichoplax I think if you hover over it, you also get the seconds? Can't test right now though.

trichoplax

9:17 PM

@ΛεγίωνΜάμμαλϠΨΠʹ I see. Then you might need to download the transcript. I'm not sure if that will give better accuracy. I know some people here have downloaded the whole transcript somehow

@MartinEnder Seems that works everywhere on SE except chat... :(

orlp

@FryAmTheEggman I got one shorter than that

char b[65]="rnbqkbnrpppppppp";for(i=16;i<64;)b[i++]=32^(i>48)*b[64-i];

ΛεγίωνΜάμμαλϠΨΠʹ

@MartinEnder That also just gives the minute

Martin Ender

Hm okay

orlp

that is not counting the bytes needed to declare i, but I'm assuming I already have a free variable for my program

it's a happy coincidence that A ^ 32 = a and 0 ^ 32 = space

(or maybe not a coincidence after all? ASCII has been engineered with tons of stuff like this)

although I messed up, I want the board reversed (so that a1 == b[0]), but that should be an easy fix

never mind

it's not correct

the king/queen is flipped

@FryAmTheEggman going with your solution...

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Longest string of sequential operators This is my first time posting to Code Golf so please make suggestions about the challenge and how I should phrase it. This is a weird idea that came to me when I was fooling around the other day in C++. I noticed that if I have int i = 0 or something, I c...

trichoplax

9:28 PM

19 mins ago, by ΛεγίωνΜάμμαλϠΨΠʹ

Question: How does one obtain the exact timestamp of a Chat.SE message?

@ΛεγίωνΜάμμαλϠΨΠʹ As a workaround, you can see the exact time of your original message by hovering over the "19 minutes ago" in this quoted message ^

ΛεγίωνΜάμμαλϠΨΠʹ

Weird

trichoplax

Also by hovering over the "1h ago" in a starred message, so the seconds are definitely stored.

ΛεγίωνΜάμμαλϠΨΠʹ

Guess I'll be going to the Sandbox then

trichoplax

Yes I was about to say use the sandbox if you need to measure this for more than 1 message :)

@MartinEnder Just to let you know, the seconds seem to be stored but just not displayed ^

Downgoat

@flawr so like:

that?

flawr

9:37 PM

@Downgoat That looks weird.

Could you perhaps add just a brighter version of the arrow below the arrow (as you did with the "documents"?

Downgoat

infographics are hard >_>

trichoplax

Are these instructions for a new paper based version of git?

Rainbolt

(looks back at PPCG chat for the tenth time this afternoon) Yup, same image posted again.

Conor O'Brien

^

Downgoat

@trichoplax no. I'm making a git infographic for my blog:

1 hour ago, by Downgoat

@flawr sorry but i have no idea what you mean?

trichoplax

9:40 PM

Oh that sounds interesting. Will you be linking to it from here when it's ready?

Rainbolt

@flawr )

Downgoat

@trichoplax yup

trichoplax

@flawr Do you want me to edit that to add in the ")" so future chatbots don't use unmatched parentheses?

flawr

(crappy version, the arrow below should probably be brighter

instead of darker

Downgoat

ah ok isee what you mean

flawr

9:46 PM

@trichoplax No, this is with an artistic intention.

trichoplax

Would it help to make the closer commits larger?

@flawr Ah, of course. I see it now...

Downgoat

@flawr ^?

@trichoplax meaning?

trichoplax

If I understand correctly, the ones on the left are going on top of the ones on the right. If they were slightly larger, as if nearer the camera, it might emphasise this

Depends on whether that ruins the stylised format though

Downgoat

@trichoplax ah ok

Steven H.

10:03 PM

I just realized how stupid I am for trying to write a functional programming language in Python.

...
  File "C:\Users\Steven\LI\src\Interpreter.py", line 366, in difference
    arg1, rest = retrieveParams(2, dict, *args)
  File "C:\Users\Steven\LI\src\Interpreter.py", line 181, in retrieveParams
    arg1, rest = string[0].execute(dict, string[1:], *args[1:])
MemoryError: stack overflow

trichoplax

I guess you could still implement tail call elimination in python

Steven H.

I could, but it makes the interpreter infinitely more complicated

It's still at a stage where I could just move the entire thing over to a LISP language

flawr

... or Haskell!

ΛεγίωνΜάμμαλϠΨΠʹ

Fun fact: The MP4 specification allows for a video 584 942 417 355y026d06h56m00s long.

Just imagine watching a six-hundred-billion-year-long video...

Downgoat

10:20 PM

^ hows that

Steven H.

@flawr I'm not as familiar with Haskell, though. Would need to learn the language in order to implement another language in it? No thanks

ΛεγίωνΜάμμαλϠΨΠʹ

@Downgoat What's this for?

Steven H.

Downgoat is explaining Git for a blog

ΛεγίωνΜάμμαλϠΨΠʹ

huh

@Downgoat What do you generate graphics with?

Looks kinda TikZ-ish

Downgoat

@ΛεγίωνΜάμμαλϠΨΠʹ i draw them with adobe illustrator

βετѧ Λєҫαγ

10:33 PM

2

A: Sandbox for Proposed Challenges

Unbork the Computer Blur code-golf image-processing Introduction When blurring images, many image processing programs do not properly blur images, leaving dark lines. For this reason, I want you to create a program which blurs an image without leaving dark lines. Note: Peter Taylor informs me...

^Anything more to be done?

Dennis

@StevenH. "Just memorize these commands and type them to sync up. If you get errors, save your work elsewhere, delete the project, and download a fresh copy."

Everything I've ever needed to know.

βετѧ Λєҫαγ

If that doesn't fix it, git.txt contains the phone number of a friend of mine who understands git. Just wait through a few minutes of 'It's really pretty simple, just think of branches as...' and eventually you'll learn the commands that will fix everything.

Obligatory xkcd

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Goat simulator is 50% off on steam!

@Downgoat

Dennis

Why would a goat need a goat simulator?

Downgoat

@EᴀsᴛᴇʀʟʏIʀᴋ yeah. Upgoat was chopped in half when being made into chevon ;______; Q_______Q ;____:

Eᴀsᴛᴇʀʟʏ Iʀᴋ

10:37 PM

nooo

βετѧ Λєҫαγ

Why would a pilot need a flight simulator? @Dennis

Dennis

It's not a barn simulator. Why would a pilot need a pilot simulator?

βετѧ Λєҫαγ

Touché

Downgoat

@Dennis so i can practice goating without hurting myself

Dennis

Pointless arguments won today: 1 Hours wasted at a computer: 8 12

(forgot the time before going to bed)

Steven H.

10:41 PM

What about pointless arguments lost today?

βετѧ Λєҫαγ

666

Downgoat

question: what icon/drawing/symbol(s) should I use to represent a dif?

Steven H.

Wait no that's faulty Dennis never loses an argument

Releasing Helium Nuclei

hai

Steven H.

Hi

Conor O'Brien

10:45 PM

@Dennis 1 hours? ಠ_ಠ

FryAmTheEggman

^ Parsing error.

Downgoat

o hmy god what is chrome doing to my ram O_O ;_;

Conor O'Brien

^ why you should use firefox

Downgoat

safari browser is best browser

Conor O'Brien

then why are you using chrome

Downgoat

10:51 PM

reasons: fastest JS engine, awesome dev tools, etc.

@ConorO'Brien testing

Conor O'Brien

ಠ_ಠ

Downgoat

how's my diff thing :3

ΛεγίωνΜάμμαλϠΨΠʹ

An easy method for creating a time machine: Hire some CS grads to write an algorithm that adds two numbers that runs in O (- n) time.

Conor O'Brien

11:05 PM

@Downgoat I still don't know what a diffi s

DerpfacePython

I've got a pretty good question

for PPCG

ΛεγίωνΜάμμαλϠΨΠʹ

@DerpfacePython ?

DerpfacePython

Generate all powers of 2 that do not contain the single-digit powers of 2 (1, 2, 4 or 8).

Downgoat

@ConorO'Brien en.m.wikipedia.org/wiki/Diff_utility

ΛεγίωνΜάμμαλϠΨΠʹ

@DerpfacePython And those are...?

DerpfacePython

11:13 PM

The only one possible is 65536.

Under ~2^31000.

ΛεγίωνΜάμμαλϠΨΠʹ

@DerpfacePython I mean, heuristics show that non-apocalyptic numbers are rare

DerpfacePython

Non-apocalyptic?

LOL a lot of people have Greek names now...

Is this a new fad?

ΛεγίωνΜάμμαλϠΨΠʹ

@DerpfacePython googology.wikia.com/wiki/Apocalyptic_number

DerpfacePython

Is this a good challenge?

Luis Mendo

Well, if you already say the answer is 65536, I foresee many answers with 5 bytes or less :-)

I'd rather take the forbidden digits as an input

DerpfacePython

11:19 PM

Hmmm

I'm thinking of making a higher range

up until 2^1m maybe?

Luis Mendo

Also, you can't ask for "all" such powers

Maybe the first one?

DerpfacePython

What do you mean?

Luis Mendo

Imagine you want all powers of 2 that don't contain say 8. There are probably infinitely many: 1, 2, 4, 16, 32, 64, 256, ...

The program would run forever

DerpfacePython

Yeah

Luis Mendo

Also, there are precision issues

DerpfacePython

11:20 PM

Yeah.

Luis Mendo

Many languages don't support arbitrarily large integers

DerpfacePython

This challenge was kindof a bad idea right?

Luis Mendo

Not a bad idea. Just adjust as I suggested, or in any similar direction

Steven H.

The first n up to some maximum?

where n is an input

Luis Mendo

Or how about: the first power of n that does contain digit m?

ΛεγίωνΜάμμαλϠΨΠʹ

11:24 PM

All powers of two without 1,2,4,8 would have to be of form 2^(4 k ), k > 0

Or equivalently, 16^ k, k > 0

DerpfacePython

I was thinking the first power of n that does not contain n-1 digit powers of n.

Luis Mendo

The problem is, you quickly reach very large values, so potential data type limitations

Destructible Watermelon

11:40 PM

I really like this guys distinct random letter program

2

A: Random Golf of the Day #7: A distinctly random character

><>, 14 bytes lx ;>dd+%'A'+o ><> is a toroidal 2D language, and the distinct probabilities part just naturally happens due to the language's only source of randomness. Try it online! The relevant commands are: [Row 1] l Push length of stack x Change the instruction pointer...

Jonathan Allan

Is it OK to post same length same language different method in CG challenges?

0

A: Random Golf of the Day #7: A distinctly random character

Jelly, 5 bytes ØAxJX (Equal score, but a different method, to an existing Jelly solution by Dennis.) The probability of yielding each letter is it's 1-based index in the alphabet divided by 351 - the 26th triangular number: P(A) = 1 / 351, P(B) = 2 / 351, ..., P(Z) = 26 / 351. Since 1+2+...