The Nineteenth Byte

One of easiest code written by a programming language is a program printing sequence of characters (ex. "Hello, world!"). However, some esoteric programming languages like Brainfuck, even this simplest code is quite annoying to write. Your task is to write a program (don't have to written in bra...

Alex A.

@Doorknob I was joking but really it exists?

@Dennis O

quartata

3:22 AM

@Doorknob seriously what's the input string

Geobits

@Doorknob So why are you asking here? >_>

Doorknob

@quartata sekritz

@Geobits I wasn't sure if there was a better one

quartata

y u haz sekritz

Dennis

Better than PPCG submissions? That's crazy talk!

Alex A.

@quartata sekritz are tasty crackers

quartata

3:24 AM

I wanna see if it might be better by hand.

Doorknob

@quartata Probably not

quartata

are you making a puzzle for puzzling? is that why you want it secret?

Doorknob

maaaaaybe

Well, not really, but close

quartata

hm that'll be cool

Nathan Merrill

hey, what tools do you guys use for software designm?

I'm stuck on how a particular feature on my personal project should work

so I'm looking for recommendations on helping me think it through

feersum

3:31 AM

Brains

Nathan Merrill

where do you find those? I burnt my last one.

feersum

I usually just order them Amazon. They'd probably cheaper on ebay or something like that though.

Nathan Merrill

do they come in 2 packs? I would want a backup

feersum

My last message seems to be missing some words. Maybe time for a replacement.

Geobits

@NathanMerrill You can get a whole bag:

amazon.com/Zombies-Bag-O-Brains-Pink/dp/B00UASHI4I/…

Nathan Merrill

3:34 AM

I don't want the SMALL kind

I think my head is regular sized

how do I get the measurements for those?

Geobits

amazon.com/TEDCO-4D-Anatomy-Brain-Model/dp/B002WPJY58/…

Doorknob

"It's only a model."

Geobits

Might still be a bit on the small side.

New Main Posts

0

Q: Calculate the Cross Product

This challenge is very simple and I'm surprised that it hasn't been done before. You just have to calculate the cross product of two 3D input vectors. The formula for the cross product is given by: a x b = (a2*b3 - a3*b2)i + (a3*b1 - a1*b3)j + (a1*b2 - a2*b1)k where <a1, a2, a3> and <b1, b2, b3>

code-golf math geometry

Nathan Merrill

oooh, there are detachable parts!

I could replace my creative side with another logic module

then I'd definitely be a pure vulcan

ՊՓԼՃՐՊՃՈԲՍԼ

3:36 AM

@ETHproductions Bruh you've seen ESMin.

Geobits

You might need that creative side for software design, though.

Nathan Merrill

yeah, that's why detachable is great

I can just stick it back in

Anonymous

@Geobits Only for getting through interviews. Then you can safely turn it off. Employers only pretend that they want creativity.

Geobits

Oh, well sure if it's for an employer.

Nathan Merrill

well, until I get that ordered, any recommendations for software design tools?

otherwise its the top result on google

feersum

3:40 AM

What is a "software design tool" even supposed to do?

Alex A.

Design software

Geobits

Go with the third result instead. First is too mainstream.

Anonymous

There's a stack for that

quartata

what if the earth is destoyed and the nineteenth byte transcript is the only thing the aliens find

Nathan Merrill

3:40 AM

oooh, I had no idea

Geobits

@quartata He should report his findings back here to prepare for that.

Alex A.

@quartata They'd have an... interesting... idea of what humans were like.

quartata

They'll think we were a species with detachable brains that communicated via stars and disapproval faces

Alex A.

I'm pretty sure that's at least accurate of this community

Anonymous

Is there a page that shows area51-like stats (q/day, a/q, etc.) for non-beta sites?

Anonymous

3:42 AM

@quartata And puns. And xkcd comics. But yeah, that's pretty much it.

Geobits

> Chief diet consisted of carrots.

Cyoce

Don't forget the all-important ¯\_(ツ)_/¯

Nathan Merrill

wow, the top 4 answers on this question all came at the same time, and have still managed to keep an even score (even though one of them is accepted): stackoverflow.com/questions/974019/…

Alex A.

@Mego I don't think so

Anonymous

I'm sure there's a way to get the data from SEDE

Anonymous

3:43 AM

But it would be nice to be able to see those stats for graduated sites

Geobits

There's always a way to get it from the SEDE. The issue then is that you have to use the SEDE to get it.

Alex A.

count distinct(Id) from Posts where PostTypeId = 1 and DeletionDate is NULL group by CAST(CreationDate as date)

That'll get the number of questions posted each day (untested)

Use it as a subquery, do AVG and get the average q/d

Anonymous

That's pretty far from valid sql

Alex A.

It actually isn't...

Geobits

The inconsistent casing is beautiful either way.

Anonymous

3:47 AM

1. It would need to be a SELECT clause.
2. COUNT(DISTINCT ...)

feersum

Advanced SQL programmers only shout the most important parts of the instructions to make sure the computer is extra careful to get them right.

Alex A.

@Mego Oh right, select count(distinct Id) from ...

@feersum strawpoll.me/6651597

Geobits

I stopped using all-caps keywords when I left QBASIC.

Alex A.

Who uses the weird mix of casing and what is said mix?

Geobits

seLEct

Alex A.

3:52 AM

gross

feersum

@AlexA. I don't use SQL myself, but it's my preferred style for people who do write SQL to use.

Geobits

Use caps to encode a secret message :)

Anonymous

Average Q/day: data.stackexchange.com/softwarerecs/query/428324/…

Anonymous

(using SR because that's the one I was curious about)

Anonymous

That doesn't seem right

Alex A.

3:53 AM

It's not

Anonymous

It's giving 0.29822361546499476 for us

Geobits

Sounds about right :P

Anonymous

Oh wait duh

Anonymous

Upside down

Anonymous

3.353188507358094 is still not right...

Alex A.

3:53 AM

select AVG(CAST(qs as float)) from (...)

feersum

@Mego If your query is right, SR has existed for at least 239 years.

Alex A.

Obviously

Anonymous

@AlexA. Same result

Alex A.

with dude as (
    select COUNT(distinct Id) as QPD
    from Posts
    where PostTypeId = 1
        and DeletionDate is NULL
    group by CAST(CreationDate as date)
)

select AVG(CAST(QPD as float))
from dude

10.843273 on SR

Anonymous

Still 3.35 for us

Anonymous

3:56 AM

Which is not even close to the average A51 gives us

Cᴏɴᴏʀ O'Bʀɪᴇɴ

XD

3.353188507358094

feersum

Wow, SR has 42% unanswered.

Alex A.

Is the average on Area 51 cumulative over the life of the site?

I thought it was average within some window

Anonymous

Which means A51 puts more weight on recent questions (likely)

Anonymous

Or the query is missing migrated questions

Cᴏɴᴏʀ O'Bʀɪᴇɴ

3:58 AM

Gᴏᴏᴅ ɴɪɢʜᴛ ᴘᴇᴏᴘʟᴇ

Anonymous

Looks like A51 uses the past month's stats

ՊՓԼՃՐՊՃՈԲՍԼ

Guys, I have officially declared my love for math.js.

Alex A.

with dude as (
    select COUNT(distinct Id) as QPD
    from Posts
    where PostTypeId = 1
        and DeletionDate is NULL
        and DATEDIFF(DAY, CreationDate, GETDATE()) <= 30
    group by CAST(CreationDate as date)
)

select AVG(CAST(QPD as float))
from dude

@Mego ^

Anonymous

data.stackexchange.com/codegolf/query/428324/…

Anonymous

2slow4me

Anonymous

4:02 AM

31 seems to be the most accurate

Alex A.

GETUTCDATE is probably better than GETDATE, which I assume uses the current locale.

Anonymous

Yep

Anonymous

Though with the server residing on a UTC-based machine, it shouldn't make a difference

Anonymous

(safe assumption since all SE time is UTC)

Alex A.

Right

PhiNotPi

4:05 AM

I'm trying to link my computer with a computer at my university to perform remote computing.

Anonymous

SSH?

PhiNotPi

yeah

Alex A.

lel

PhiNotPi

I'm having some minor difficulties...

Anonymous

I'm derping

PhiNotPi

4:15 AM

brb

Anonymous

How do I do multiple with (...) subquery thingies for a single query?

Nathan Merrill

THE WHITE ROOM

►

Anonymous

Specifically, why doesn't this work:

Anonymous

with QuestionsEachDay as (
    select COUNT(distinct Id) as QPD
    from Posts
    where PostTypeId = 1
        and DeletionDate is NULL
        and DATEDIFF(day, CreationDate, GETUTCDATE()) <= 31
    group by CAST(CreationDate as date)
), UnansweredQuestions as (
  select COUNT(distinct Id) as UQ
  from Posts
  where PostTypeId = 1
    and DeletionDate is NULL
    and DATEDIFF(day, CreationDate, GETUTCDATE()) <= 31
    and AnswerCount = 0
), AllQuestions as (
  select COUNT(distinct Id) as AQ
  from Posts

PhiNotPi

I'm trying to add Chapel's stuff to my path, but it's not sticking

Nathan Merrill

4:20 AM

too long of a path?

PhiNotPi

I have source /home/[me]/Documents/chapel-1.12.0/util/setchplenv.bash which sets the environmental variables properly

and I've added it as the last line of my ~/.profile

Tried closing/opening terminal, logging out/back in again.

Maybe a complete restart is in order.

Thomas Kwa

\o/

PhiNotPi

o7

Thomas Kwa

Typed this out and it was valid on the first try.

I love when that happens.

Anonymous

How does this look for stats? data.stackexchange.com/codegolf/query/428324/…

Thomas Kwa

4:43 AM

I'm surprised that only 92% were answered.

Doᴡɴɢᴏᴀᴛ

@ThomasKwa The API says that 97% are answered...

Thomas Kwa

Why does Area 51 say 98?

Doᴡɴɢᴏᴀᴛ

Yeah, API says 97.58735441%

Thomas Kwa

@Doᴡɴɢᴏᴀᴛ Well what's the difference in counting?

Doᴡɴɢᴏᴀᴛ

Maybe API / Area 51 is all time?

Anonymous

4:49 AM

¯\_(ツ)_/¯

ՊՓԼՃՐՊՃՈԲՍԼ

5:01 AM

Anyone know how to do unary x(x-1) in Retina, where x is input?

feersum

It's making me uncomfortable that after changing a bunch of code, all of my tests still pass.

I feel like it must not really be compiling the new code or something.

I have to have introduced some bugs.

El'endia Starman

> We programmers are so used to writing a bunch of code and having bugs, that when we don't, we think something's wrong.

^ what I just said to my fiancée. :P

ՊՓԼՃՐՊՃՈԲՍԼ

@El'endiaStarman Just what happened when I nailed my bracket fixing algorithm for ESMin.

Anonymous

Bugs are good. They tell us that we're human and made mistakes. A lack of bugs is bad, because that either means we've hit the Skeetularity or we made mistakes so bad that they're not even noticeable.

ՊՓԼՃՐՊՃՈԲՍԼ

@Mego Or that you're Jon Skeet.

Anonymous

5:11 AM

Better?

ՊՓԼՃՐՊՃՈԲՍԼ

Yes.

Anyone have an answer for my previous Retina question?

feersum

@ՊՓԼՃՐՊՃՈԲՍԼ I suppose you could do s/^1/1a/ and then, in a loop, s/a1(1*)/1$1a$1/.

You mean to have x^2 - x ones, right?

ՊՓԼՃՐՊՃՈԲՍԼ

@feersum Yes

Calvin's Hobbies

Why is this so upvoted?

68

A: Paint Starry Night, objectively, in 1kB of code

Mathematica, score 14125.71 "a.png"~Export~ConstantImage[{75,91,110}/256,{386,320}] Simply saves this image: to a.png.

feersum

@Calvin'sHobbies Because it involved minimal effort.

6

Calvin's Hobbies

5:18 AM

I hope the people realize that a lower score is better (the question doesn't explicitly say)

PhiNotPi

Woo, I got remote computing work between my laptop and a linux computer in the my university's lab!

Anonymous

I probably shouldn't have, but I upvoted this. — PyRulez Jan 24 at 4:18

feersum

It's a fundamental physical law that users must upvote it.

Anonymous

Though Alex is right; it's not a serious contender and probably should be deleted

8

PhiNotPi

I motion for punitive action.

This was the reason the standard loopholes were created.

feersum

5:23 AM

It's normal that in any code challenge or KOTH, someone will post an initial attempt involving minimal sophistication or effort.

I don't think it's fair to single out this one just because it got more votes.

Calvin's Hobbies

Nah, I think it's a perfectly valid answer, I just don't get why it has the most votes

feersum

chat.stackexchange.com/…

PhiNotPi

@PhiNotPi (This is actually too strong of a suggestion)

Sp3000

Was wondering the same myself, blame all the FGITW

Anonymous

@feersum Agreed. Let's smack all of them down.

feersum

5:27 AM

(;

Doᴡɴɢᴏᴀᴛ

If all solutions must be serious contenders, does that mean Unicorn answers aren't really allowed?

Anonymous

@Doᴡɴɢᴏᴀᴛ What's Unicorn?

ՊՓԼՃՐՊՃՈԲՍԼ

@Mego The greatest language ever.

Doᴡɴɢᴏᴀᴛ

@Mego github.com/vihanb/Unicorn

Kind of like brainfuck in the way that it uses only a few symbols but it won't ever win a code-golf

Dennis

@Doᴡɴɢᴏᴀᴛ We had a brief discussion about this (I still have to write up a meta post about it) which starts here:

Jan 16 at 21:16, by Dennis

@TanMath In a code golf competition, what is the point of taking an answer in one language and apply an encoding for the sole purpose or making it longer? On top of that, you haven't attributed the answer you encoded, in violation of our terms of service.

Doᴡɴɢᴏᴀᴛ

5:34 AM

@Dennis So are one-time joke esolangs (like Unicorn) are okay?

Dennis

There's no consensus yet. My personal opinion is that encodings of a language (Unary for BF, Unicorn for ES6, etc.) should not be used to achieve a worse score.

Anonymous

Agreed

Anonymous

I'm also not a fan of the shortened-X languages, but I suppose they're technically valid

Dennis

Of course, if the challenge is not a code golf, Unary or Unicorn might actually achieve a better score.

Anonymous

I just dislike code that is "I took this answer and applied a trivial transformation on it"

Dennis

5:40 AM

What do you mean by shortened-X language?

ՊՓԼՃՐՊՃՈԲՍԼ

@Dennis I'm assuming something like (example) BF with all of its char combinations shortened down to 1 char?

So +> would shorten to a or something like that.

I think?

Anonymous

@Dennis Shortened JavaScript, for example (Jolf, ESMin, Japt, JavaScript Function Golf, TeaScript, etc.)

Anonymous

Or like ShadyAsFuck for Brainfuck

ՊՓԼՃՐՊՃՈԲՍԼ

@Mego ESMin is no longer really JS.

Dennis

ESMin is stack-based, no?

ՊՓԼՃՐՊՃՈԲՍԼ

5:44 AM

Hybrid.

Somewhere in between.

Anonymous

@ՊՓԼՃՐՊՃՈԲՍԼ Wasn't it just purely shortened JS when you first created it?

Doᴡɴɢᴏᴀᴛ

@Mego In defense for JS golfing langs. I'd say now they're as close to JS as Pyth is to Python imo

ՊՓԼՃՐՊՃՈԲՍԼ

@Mego Not quite. I wanted more than that.

Hence the blocks for compression (obfuscation), copy-paste, etc.

Anonymous

@Doᴡɴɢᴏᴀᴛ TeaScript and ESMin are about the only ones you can argue that for. Japt, Jolf, and JavaScript Function Golf are literally just shortened syntax.

Dennis

@Doᴡɴɢᴏᴀᴛ That might be true for many of them, but it's definitely false for JavaScript Function Golf.

Anonymous

5:45 AM

@ՊՓԼՃՐՊՃՈԲՍԼ I retract my statement about ESMin, then

Doᴡɴɢᴏᴀᴛ

@Dennis JavaScript Function Golf?

ՊՓԼՃՐՊՃՈԲՍԼ

@Dennis That's a thing?

Wat?

JSFG?

Anonymous

It's the "language" that zyabin guy "made"

Dennis

-1

A: 1, 2, Fizz, 4, Buzz

JavaScript function golf, 89 bytes for(var i=1;i<=100;i++){var s=(i%3==0)?"Fizz":"";if(i%5==0)s+="Buzz";if(s=="")s+=i;p(s);} I made this framework for you! The p(data) function at its finest. The annoying variant uses p2a() and weighs in at 91 byte: for(var i=1;i<=100;i++){var s=(i%3==0)?"Fi...

Ampora

I just watched that answer get downvoted three times.

Doᴡɴɢᴏᴀᴛ

5:46 AM

Well that's boring :/

ՊՓԼՃՐՊՃՈԲՍԼ

That's not that golfy.

Dennis

I'm not sure if it has potential. That particular answer is a lot longer than the vanilla JS submissions.

Anonymous

It's a boring, unoriginal "language" created by a user who insists on using memes and worn-out catchphrases all the time

ՊՓԼՃՐՊՃՈԲՍԼ

I had a similar idea before (semi-golfing JS), but I scrapped it.

Ampora

It feels like there've been a lot of not-good members trying to make names for themselves recently by trying to be "legit"

But I don't know why I feel like that. Am I wrong?

Thomas Kwa

5:48 AM

@Ampora Not good at golfing, you mean?

ՊՓԼՃՐՊՃՈԲՍԼ

0

A: Is this number a prime?

JavaScript function golf, 16 13 bytes p(pr(iai())); I made this golfing framework for you! function golf has just got a primality test function, that you can try online in the console on the language page! The primality test function took me 3 commits on GitHub. Returns 1 if prime, else 0. ...

Anotha one

Thomas Kwa

eww, they all start with "I made this for you"

Ampora

@ThomasKwa No like actually low-quality users.

Anonymous

I don't have the energy to go through all of their posts and edit out the nonsense

Ampora

With bad questions/answers/etiquette etc.

Anonymous

5:49 AM

Nyquil is kicking in :/

Doᴡɴɢᴏᴀᴛ

@ThomasKwa That's his battle call apparently

> My battle call is: "I made this for you!"

Thomas Kwa

Is it bad to edit that out?

Dennis

Sep 17 '15 at 1:15, by Doorknob

@Geobits I made this for you

Sorry, wrong user.

Anonymous

@ThomasKwa If it does not positively contribute to the post, there is no harm in editing it out

Doᴡɴɢᴏᴀᴛ

@ThomasKwa I don't think it's worth bumping it to the top of active posts just to edit it out

Anonymous

5:51 AM

If it negatively contributes to the post, nuke it from orbit

Ampora

This is code golf, fellas. I remember when all my questions ended with that

ՊՓԼՃՐՊՃՈԲՍԼ

@Mego ATTACK BOTS!

Anonymous

@Ampora And I remember editing all of those out :P Thank you for stopping that

Ampora

ಠ_ಠ. But also thank you. But also ಠ_ಠ

Doᴡɴɢᴏᴀᴛ

I'm disappointed that the code golf wikipedia page only has 2 links to PPCG. I'll be right back, after adding a bunch more

Dennis

5:54 AM

736

Q: Should 'Hi', 'thanks', taglines, and salutations be removed from posts?

I edit a lot of posts every day. I often run across posts with 'Hi' and 'Thanks' on the top and the bottom of the post respectively. I also run across things like: --User Should these items be removed during the editing of the post by an editor?

discussion edits etiquette quality-filter signatures

By all means, edit it out.

Doᴡɴɢᴏᴀᴛ

Is CJam on github?

Dennis

SourceForge

sourceforge.net/projects/cjam

Doᴡɴɢᴏᴀᴛ

ah okay, got it

Thomas Kwa

6:10 AM

@Doᴡɴɢᴏᴀᴛ In the short term, it gets bumped. The alternative is people intermittently looking at it for years.

Anonymous

6:56 AM

The choices are: Temporarily bump the posts after cleaning them up, or leave the nonsense, which will make others think the nonsense is acceptable. The choice is clear.

Pietu1998

7:13 AM

> Golfing languages tend to be stack-based in nature as stack-based programming languages tend to allow more semantic meaning with less syntax.

I sort of disagree with this. Probably has something to do with me being a Pyth programmer.

Sp3000

@Pietu1998 I think you can tell, but that page is just very, very outdated

Pietu1998

@Sp3000 That was edited in today. Look 10 messages up.

Sp3000

Well.

Pietu1998

I think we should start a stack-based vs. functional language edit war on the code golf page and get everyone banned from Wikipedia

quintopia

7:37 AM

Hellego

i should probably sleep instead of playing pandemic koth

Hello guys!

goodbye guys!

0

Detour (non-competing), 19 bytes `u @"Hello, World!" Try it online! This language was not designed with strings in mind. "How do you fit a string literal into a 2D language represented on a grid of characters?" You don't! Just put a `, and then define what the `'s stand for on the bottom wit...

So ugly

TanMath

@quintopia no!

Goodbye then!

quintopia

but i really should

TanMath

7:44 AM

Any organic chemistry guys or gals?

@quintopia why?

Also, anybody know how to make a SE chat bot?

Pietu1998

@TanMath I do know something about that stuff, if nobody else answers

TanMath

Nobody really is here so I assume only you can answer

@Pietu1998 did you study line angle structures?

Like the zig-zag ones...

Pietu1998

Nope. My knowledge is about high school level (in Finland).

TanMath

OK...

quintopia

@TanMath i stayed up all night last night. i should not do it again

TanMath

7:59 AM

@quintopia what time is it now?

quintopia

@TanMath yes. they are probably all asleep. github.com/ConorOBrien-Foxx/PPCG-Chat-Bot you could study this code

@TanMath 3am

TanMath

@quintopia so you are in the east coast?

@quintopia bad assumption...so most of us live in US?

@quintopia I do not know JS

Pietu1998

@quintopia Lol, time zones are fun. 10am here

quintopia

@TanMath it would be useful to know if you wanted to write a SE chatbot

zyabin101

So, I was just trying my battle cry. Thanks.

TanMath

8:03 AM

@quintopia OK..

I will try to learn it...

quintopia

i need to learn about 99 things myself

zyabin101

@quintopia I'll keep a catalogue.

Pietu1998

So are SE chatbots actually running in browsers only? Or is there an API that could just be used with anything?

zyabin101

99 things about quintopia: Thing 1. I'm a code golfer.

Thing 2. I like dogs and mustaches.

Thing 3. I don't like identicons.

:P

TanMath

Lol

4. I like Seriously

quintopia

8:12 AM

@zyabin101 seems like you misplaced the "about". i said "about 99" not "about myself"

@TanMath ehhhhhhhhh

TanMath

@quintopia oh...

@quintopia you do not like it?

1. Atoms are made of protons and neutrons and electrons

2. Protons and neutrons made of quarks

3. The universe is 13 billion years old

Pietu1998

I could dump the Pyth instruction list

TanMath

Lol

Pietu1998

That's 95 facts

quintopia

@TanMath I...don't know how I feel about it. I know it is severely flawed and frustrating to use, but it also good mental exercise.

TanMath

8:15 AM

Don't let @Mego know that!

quintopia

@Pietu1998 that's about 99 I guess

Pietu1998

@TanMath sneakily pings Mego

zyabin101

@Pietu1998 No, it's only one thing of 99.

quintopia

@Mego hi. Seriously is severely flawed and frustrating to use

TanMath

Exactly...

Pietu1998

8:16 AM

@zyabin101 That's why you dump it in 95 messages

quintopia

@Mego I apologize for the random ping.

zyabin101

@Pietu1998 Stealth pings were already fixed. Everybody celebrates.

TanMath

Except me

@zyabin101 look in edit history

Pietu1998

@zyabin101 That wasn't even meant to be a stealth ping

TanMath

^

Pietu1998

8:17 AM

@Mego I'm pinging you just to say you've been pinged multiple times now

TanMath

He was saying how I pinged @Mego while saying don't tell @Mego

Pietu1998

^

TanMath

^^

zyabin101

8:38 AM

Someone was talking about the low reception of my JS function golf answer being about function golf just being a renaming of some built in functions. It really is. However, I also started renaming constants and soon will do variables as well. But that isn't a complete JS golfing framework, after all, so contribute to the GitHub repository!

TanMath

9:50 AM

Good night guys!

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code-golf string encode

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10:10 AM

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Lembik

11:12 AM

hi all

zyabin101

hi

flawr

12:45 PM

@AlexA.

Everyone's Upstairs Neighbors

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