The Nineteenth Byte

isaacg

12:01 AM

Hey everyone, I was thinking of starting a "Tips for golfing in Pyth" question - sound good?

Martin Büttner

sure, why not?

isaacg

OK, will do.

isaacg

12:28 AM

I screwed up - how do I make the question community wiki?

Martin Büttner

you don't

I'll flag it for you

isaacg

Thanks.

Sp3000

12:50 AM

Pyth looks interesting, will add it to the to-learn list :)

Doorknob

Quick poll: What do we think about this? Delete or keep as CW?

0

A: Pixel art, episode 2: Display the map 1-1 of Super Mario Bros

Javascript - 19 Since it seems to be allowed (if I understood you correctly), I decided to just embed the image from the link provided. location='//‽.ws/夫' Edit: This violates the rules, and so has been marked as CW.

isaacg

1:19 AM

I'd prefer delete - it breaks a standard rule that applies by default to every question, so the standard reasoning of "Keep it around so no one else makes that mistake" is less important.

Dennis

1:56 AM

@Doorknob No internet is implied in kolmogorov-complexity and it's a standard loophole anyway. If the score was negative, I'd already have voted to delete.

Doorknob

@Dennis Alright, going boom. (For the record, please flag things that should be flagged! Stuff doesn't seem to get flagged enough in general around here.)

Dennis

@Doorknob Well, it had a comment from a mod, so I assumed they were aware of it. :P

Doorknob

Well... yeah :P But still, lots of times I find downvoted non-answers that nobody's flagged, which would have been deleted a lot earlier had someone flagged as NAA. (This isn't specific to any one user of course, it's just a general site-wide thing I've noticed.)

Dennis

2:29 AM

@Doorknob Yeah, I don't flag as much as I used to. I have over 1,000 helpful flags on the network, but only two of them are from this site. :/ More or less lost the habit when I earned 20k on SU... I'll try to flag more.

What really interests me is how Peter Taylor managed to cast his deletion vote.

As far as I can tell, the answer didn't have a negative score at any given time.

New Meta Posts

3:23 AM

0

Q: Could there be a way to have obfuscation challenges?

Obfuscating things can be incredibly fun: http://keyboardfire.com/ | license: MIT | contact/email: andy@<website> | enjoy! (U=function(o){this.Q=o}).prototype.w=function(M){J='ns',H=Math.PI,G='.',T=H|0+G E=function(b){return b.replace(Q[T],function(b){return h(b.charCodeAt()-H+T)})}; return-M,(l...

Sp3000

4:52 AM

Awkward, I accidentally hit downvote when browsing SO on mobile and now I can't undo it

Peter Taylor

6:07 AM

@Dennis I can't remember what it was on when I voted to delete.

Martin Büttner

8:13 AM

@Doorknob we did have this discussion on meta before, I'll go look for it later (consensus was deletion I think)

@Doorknob I think I did flag it.

@Sp3000 ask the author to make a small edit

@Doorknob oh, you did find that meta post

Sp3000

This was a thread from a year ago though...

(why are you prevented from vote-switching anyway, out of curiosity)

Martin Büttner

@Sp3000 apparently to prevent "tactical downvoting": meta.stackexchange.com/a/18046/201409

Sp3000

Wow, I didn't realise that was a problem...

Martin Büttner

does this look good to go?

1

A: Sandbox for Proposed Challenges

Draw the South Korean flag code-golf graphical-output geometry When I stumbled upon this question I remembered that I had also once seen precise rules for the construction of the South Korean flag. And this is quite a different construction. Source: Wikipedia So you're to render to file or ...

Sp3000

Flag instructions look pretty unambiguous to me :) - wish Python had an easier way to output images though :/

Although, with 300x200, I wonder how well compression would do...

(as opposed to actually drawing it)

Martin Büttner

8:30 AM

Hm, specifying the image vectorially seems to be close to the actual information content, so that will hopefully not be beatable by simple compression too easily.

also, using existing compression is pretty much a loophole

rolling your own should be fine... with 200 lines of pixels I doubt that RLE can beat a good constructing solution

I'll make it 450x300 just to be on the safe side ;)

and I guess I should tag it kolmogorov

Sp3000

:) why not

Martin Büttner

(also yay, I've finally got that pesky fanatic badge on meta :D)

Sp3000

:) congrats

Sp3000

8:58 AM

@MartinBüttner Using turtle's probably a terrible idea, but what happens if the image has no border?

Martin Büttner

9:24 AM

@Sp3000 what do you mean?

the image is supposed to have no border.

Sp3000

Oh, well in the construction image the flag specifies at 2:3 ratio

Martin Büttner

yes, but what does that have to do with a border?

oh, because vector graphics don't really have a limited extent.

I think I'll need to clarify that.

Sp3000

Maybe I should have clarified that by "border" I mean "my canvas is infinite so my screenshot's not going to be to a 2:3 ratio unless I'm careful"

Martin Büttner

I see

Sp3000

Like so

(I hope I did my maths right)

Martin Büttner

9:31 AM

see my edit

Sp3000

So I'll need to draw in a black border then?

Martin Büttner

yes, unless you can crop out the relevant section of the canvas somehow

Martin Büttner

10:11 AM

posted

0

Q: Draw the South Korean flag

When I stumbled upon this question I remembered that I had also once seen precise rules for the construction of the South Korean flag. And this is quite a different construction. Source: Wikipedia So you're to draw an exact construction of this one now! Specification You can render the flag...

code-golf graphical-output kolmogorov-complexity geometry

Sp3000

I keep getting something that looks like extra lines even though I haven't called pencolor() o_O

Sp3000

10:34 AM

I give up, no idea why

Martin Büttner

looks good :)

Sp3000

I'm here thinking, surely Python turtle has a function for drawing rectangles, right

Can't seem to find one though

Martin Büttner

how come the red and blue look like a bad case of jpeg compression?

Sp3000

Try i.stack.imgur.com/5iC4z.png

I added an "m" before the .png or it'd be too big in my answer

Martin Büttner

nah, that's fine. I'd prefer if you included that one

Sp3000

10:44 AM

Added a link in my answer :)

TwiNight

Anyone encoded a semiprime factorization in a regex yet?

Sp3000

user23013, 1.5k-bit

TwiNight

11:05 AM

Pondering on how to do a 128bit*128bit semiprime factorization problem in regex

maybe I should go to sleep and continue tomorrow

Sp3000

Ahaha, using .NET?

TwiNight

yes

i am surprised at how fast it reads a 128bit number actually

Sp3000

Well, that depends on how you're representing the number, I'd assume :)

TwiNight

8 groups of 16 bits

getting a bit tired, i'm off

Sp3000

Ahaha k, night then :) good luck with it

Sp3000

11:24 AM

@MartinBüttner ...and Regex Golf gets its first safe submission!

Martin Büttner

just noticed :)

now, phase 2: the golfing :D ... how short can a regex be made while remaining uncrackable

Sp3000

Ahaha yeah :) - with current techniques it seems like maybe the 20k mark?

Unihedron

I want to write a regex that introduces catastrophic backtracking that cannot be unfolded!

Martin Büttner

@Unihedron I'm looking forward to it ;)

Unihedron

... But I'm not good enough to. :(

I'll need a research team and five months.

New Sandboxed Posts

12:19 PM

0

A: Sandbox for Proposed Challenges

Before I start, I have few notes. Links will be available once the question will be published. I am keeping it in sand box until the next Monday, October 28. I am going to invest some money in advertising this question, so take under your consideration that it will be visible to many new users ...

Martin Büttner

12:38 PM

@Unihedron You've got the team in this and the regex chat room :P.

Sp3000

Can we do joint-regex breaking? :P

Martin Büttner

what would be stopping you :P

Unihedron

Join forces? :P

Geobits

By your powers combined....

Sp3000

Let's go! Which one are we tackling? :P

Unihedron

12:50 PM

The gigaregex?

You'k, if we beat that we instantly becoming the champ for the scoreboard :P

Sp3000

Which giga regex? :P

The 600k one's safe now

Martin Büttner

@Unihedron why? the total length is only the tie breaker

Unihedron

Oh.

Can't someone game the system by telling a friend the pass key though?

Martin Büttner

yes, but you don't get rep for being a robber, so I'm not sure there's enough incentive... the robber's challenge is purely for the enjoyment of solving puzzles... so...

Sp3000

@Unihedron psst psst ... my key ... has only ... 1s and 0s!

Unihedron

12:57 PM

There's another bounty!

Who's being awarded for excellence in insanity?

Sp3000

user23013 for coming up with the empty string balancing group thing :P

I wanted to award immediately, but SE's forcing me to wait 24 hours

Martin Büttner

@Sp3000 I think I once also found a weird workaround to force the engine to reapply a zero-length group... I don't even think it was .NET though, but I'm not sure... let me see if I can find the relevant answer on SO.

Unihedron

We need a userscript to hide all entries that are cracked. ;)

Martin Büttner

ah yes, stackoverflow.com/a/17176756/1633117 ... it's quite a beast of an answer, but see the bullet points at the end if you can't be bothered to read it

Sp3000

Ahaha nice answer

Unihedron

1:10 PM

It's longer than Shog's post about the extended theory of moderation.

Martin Büttner

lol

Unihedron

Oh, it's the QTax regex thread. I love that thread.

Martin Büttner

btw, for the first time since I joined SE, I am now the proud sole owner of a (bronze) badge :D

(the new graphical output tag badge)

Unihedron

:O

Sp3000

Ahaha nice :D

Martin Büttner

1:21 PM

it won't take David Carraher long to catch up, but I thought I'd enjoy my short moment of glory :D

Geobits

Time for me to spam answers on 13 [graphical-output] questions. I've already got the score needed, so I guess they don't need to be good answers :P

Martin Büttner

I think they need a positive score to count, but I'm not entirely sure

Geobits

That's what sock puppets are for! I just need to make them good enough that they don't get down voted ;)

Martin Büttner

no it's actually not true, downvoted answers also seem to count

as long as the downvotes don't bring you below 100 overall score ;)

you've got quite an impressive average score on graphical output though ^^

Geobits

In that case, you'll be sharing that badge within the hour :P

The chaos game question is really bringing my average down, though.

Martin Büttner

1:28 PM

sorry about that ;)

Unihedron

:P

Martin Büttner

I was quite disappointed how few upvotes answers got on that one

Geobits

My average is probably only so high because most of my [graphical-output] answers are also [popularity-contest].

Martin Büttner

tell me about it :P

Geobits

Oh yea, aren't 2-300 of yours from tweetable math alone?

Martin Büttner

1:33 PM

over 400 actually

433

Geobits

So over half your total in the tag? Nice :)

Martin Büttner

it's ridiculous, I know :D

and that question had 4 tags I think ^^

well my top-voted one is the Vigil one... then there's 4 tweetable maths ones... then there's the Venn diagram (which I'm particularly proud of)... and the Euro sign (for which I got Populist, I think)... and then another tweetable maths... and then there are some other non-graphical-output ones :D

Geobits

That seems fair. 20% of my gfx-output is from that one, and I only submitted one answer ^^

Martin Büttner

my position on the graphical output askers leaderboard is actually nicer. I'm 4th, but the top 3 are the authors of Tweetable Maths, Images with all Colours, and the palette rearranging one

(in fairness, Calvin's Hobbies would still be ahead of me without the palette one ^^)

(and yay, the south korean flag is now the HtestNQ... I should get back to some studying...)

Geobits

That reminds me, I need to post another koth, my asker position is slipping (and answerer is close :o )

Martin Büttner

1:43 PM

also we haven't had any koths in a while

(wow, the Last 30 Days leaderboards are empty)

if you post one, I can't guarantee you'll keep your top spot on the answerer's board :P

Geobits

1:58 PM

No guarantees, but my reference answers usually get a decent score :P

Martin Büttner

oh yeah, I didn't guarantee you you'd lose it either :P

Geobits

There's this in the sandbox, but I'm unsure how it's going to work out.

Martin Büttner

I noticed

I'm not really sure what to think about it

Sp3000

2:14 PM

shakes head why is it that all my question drafts end up being so long

Martin Büttner

I used to have the same problem (and still sometimes do)

Unihedron

But then?..

Geobits

Then he learned to let go and enjoy life. This Christmas, a coming of age story like no other. Get ready to meet...... Martin. (in theaters soon)

Martin Büttner

I started writing some simpler golfs instead of complicated code challenges :P

-.-

Sp3000

(The longer I write this, the more convince I am that this could almost be a code-challenge instead of code-golf)

New Sandboxed Posts

2:47 PM

0

A: Sandbox for Proposed Challenges

Resolving an arm-entangling rhythm game Source: Wikipedia SOUND VOLTEX is a Japanese rhythm game which allows the player to apply DJ effects to a song via buttons and knobs. I make it sound simple, but it's actually gets quite intense. SOUND VOLTEX's control panel (pictured above) consists o...

Beta Decay

4:36 PM

I can't believe the amount of rep I've been getting from Worldbuilding... It's crazy!

Martin Büttner

5:41 PM

Windows hotkey of the day: Alt+Enter in the explorer opens the selected file's properties

5

I love how I discovered one of these about two or three times a year completely by accident

Beta Decay

6:45 PM

@MartinBüttner Why do you use Ruby so often? I'm wondering if I should learn it...

Geobits

8:23 PM

@MartinBüttner That's kinda how I feel about Windows 8. I figure out how to do everything in it by accident :P

Doorknob

8:49 PM

Hey JavaScripters, we now have runnable Stack Snippets! Just hit the little button in the toolbar or press Ctrl+M to access them.

9

TwiNight

9:31 PM

Hi

continuing my quest of semiprime factorization in regex

Martin Büttner

11:50 PM

@BetaDecay originally, I started using it, because I needed a language with mutable strings for this challenge. that was quite fun so I used it every now and then. I've still never used Ruby for any real-world programming, but I think I'm fairly decent at golfing it now.

@Geobits I don't feel like that's specific to 8

(in other news... ffffffuuuuu... one rep short of the rep cap, due to downvoting :D)

@TwiNight I wonder if the main reason for the three remaining answer persisting is the onset of the robbers' fatigue :D

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