The Nineteenth Byte

Martin Büttner

16:00

@Sp3000 wanna give it a go as well?

Sp3000

Not currently, sorry trying to Rust

Calvin's Hobbies

You guys are gonna be winning before I even post it :S

Martin Büttner

@Calvin'sHobbies you asked us to...

Calvin's Hobbies

Well yeah :P

Mauris

Sigh

Gonna get beaten to the punch because I can't compile Macaroni!

Okay, @kennytm got it.

Sp3000

16:10

See cargo comment above ^^ (I only just started, so that makes two of us :P)

quartata

@MartinBüttner Hey Martin, you have MATLAB right? I think I cracked the MATLAB answer but I can't test it.

Martin Büttner

uhhh

I'd have to start up my Ubuntu VM

does it work in Octave?

octave-online.net

Mauris

@Sp3000: I'm missing a bunch of dlls I don't want to spend time looking for I guess.

Sp3000

... ah :/

quartata

I don't believe it does sadly. The program appears to print out all toolbox licenses...

Martin Büttner

16:15

hm, that sounds like it depends on the particular set up anyway?

send me the code anyway

quartata

ver.Name;

Martin Büttner

give me teh codez!

ah okay

quartata

0

A: The Mystery String Printer (Cops)

MATLAB I'm going to post this, but feel free to call it invalid. The thing is although the output will always be the same on the PC I am using, it may be different on a different machines as it depends on installed licenses. If it is not valid, I'll delete the answer and will play around making ...

I'm going to give the guy the benefit of the doubt and assume he ran it on a fresh install.

Martin Büttner

Undefined variable "ver" or function "ver.Name".

quartata

Huh.

Martin Büttner

16:21

okay ver exists

when was .Name added?

I'm running R2013a

quartata

4

A: How would one check for installed MATLAB toolboxes in a script/function?

I know this is a pretty old question, but a really simple answer is actually in the question (parse the output of ver) .... >> v = ver; >> setdiff({v.Name}, 'MATLAB')' ans = 'Aerospace Blockset' 'Aerospace Toolbox' 'Bioinformatics Toolbox' 'Communications System Toolbox' '...

Was just looking at this

It's from 2011 so I think your version is new enough.

Martin Büttner

hmmm

quartata

Maybe try that code verbatim?

In that answer

Martin Büttner

interesting

Doorknob

@Mauris grr, that was not the intended solution :P

Martin Büttner

16:23

it works if I assign ver to v

but the output looks a bit different

ans =

Bioinformatics Toolbox


ans =

Communications System Toolbox


ans =

Computer Vision System Toolbox


ans =

...

quartata

Huh

Looks like he did something to jam them all together.

Requires more research.

Do you have a way of knowing the type of v.name?

I know MATLAB is weak typed so it might not have a typeof.

Martin Büttner

v appears to be a 1x48 array of structs, where each struct has a field Name

got it

quartata

arrayfun is a thing in MATLAB right?

Martin Büttner

v=ver;[v.Name]

quartata

Oh?

Ah. I see

Martin Büttner

16:28

wait

quartata

Do you want to post it?

Martin Büttner

it does print ans = so I might need disp or something

then it's 20 bytes though :/

v=ver;disp([v.Name])

quartata

Maybe just disp([ver.name])?

That's exactly 16 bytes.

Martin Büttner

I can't use ver directly

it only works if I assign it to a new variable

quartata

I guess the guy just assumed that he could lop off the ans.

I'll ask.

Martin Büttner

16:31

I already did

quartata

Der

Mauris

Hm. kennytm asked Does the solution contain non-ASCII characters? but I don't think I'm obliged to answer that?

(I really feel like answering: it's gs2, go figure.)

Nobody's saying anything about the printed string, though

Or, I mean, kenny isn't

quartata

I suppose technically the language specific token thing would apply to GS2.

Mauris

These challenges are really dumb. I give up.

Built-in cryptographic primitives (includes any rng, encryption, decryption, and hash) aren't allowed. <-- this rule is supposed to save them, but multiplying and adding together bignums is surprisingly good "crypto".

quartata

Heh

Martin Büttner

16:36

hey, don't blame the CnR genre for the faults of a particularly bad example ;)

Mauris

Especially for APL challenges: how is finding which combination of sin/cos/exp prints 0.3447320498320394J6.1247385942340285 any different from a hash function?

There are very good CnR challenges, but this isn't one of them; the edit distance one suffered similar problems

I guess if your challenge needs a no crypto rule it's not very good

Doorknob

I challenge anyone to crack my Ruby submission. Pretty sure nobody'll be able to do it. :P

quartata

@Doorknob Oh wow

Ugh

Calvin's Hobbies

@MartinBüttner I bet the Alex task will be short. Numpad maybe not so much

Martin Büttner

@Mauris I agree, but it's surprisingly hard to come up with a CnR challenge where this sort of number crunching doesn't turn the robbers' challenge into a brute force party.

Calvin's Hobbies

16:40

^ definitely

Sp3000

@Mauris The no crypto rule has been in quite a lot of challenges actually, e.g. Unscramble. For one thing, trig functions are faster to brute force than crypto hashes at least (or I'd hope so)

But yeah, I'm just going to skip all the ones which look like brute force. I mean, something like str(a**b)[x:y:z] is just painful

Martin Büttner

@Calvin'sHobbies 21 for Alex

Mauris

I'm thinking more of prime factorization though. That's the real hell

Martin Büttner

might be shorter in Retina

18 (untested)

Calvin's Hobbies

I suppose I could allow different languages..maybe

Martin Büttner

16:43

wait this doesn't work...

more like 30 in Retina

Beta Decay

Have the obvious problems in the CnR been sorted out yet?

quartata

How do you make a multi-line code box?

Mauris

Prefix each line with four spaces

Calvin's Hobbies

Or Ctrl-k or the little button for it

Optimizer

or just don't

quartata

16:58

OK.

Martin Büttner

@quartata He clarified that he omitted the ans=, so you can post the solution now

quartata

Trivial answer converted to comment.

What

Martin Büttner

yeah that happens

Mauris

Oh, so I'm not crazy.

Can we get rid of that? :<

Martin Büttner

yeah, by adding an explanation to your answer :P

quartata

17:03

Let's see how well this goes.

0

A: The Mystery String Printer (Cops)

Groovy Range <= 128 String: eert.scireneg.tcelfer.nu egami.twa.ava noitatonna.tcelfer.nu epocs.scireneg.tcelfer.nu snaeb.ava gniggol.litu.nu elbat.gniws.xava oin.ava trec.ytiruces.ava piz.litu.ava resrap.scireneg.tcelfer.nu elif.oin.ava ytilibissecca.xava emit.ava stcejbOevitcelfer.scireneg.tc...

Calvin's Hobbies

5 more tasks, hmmmm

quartata

Wait, we can't use RNG?

When was this

I thought we were allowed to use RNG...

Well gotta redo this now.

Optimizer

facebook.com/video.php?v=418836768314506

^ most honest ghost reaction

Martin Büttner

@Calvin'sHobbies 37 for numpad, but it's most certainly not optimal

quartata

...take two

0

A: The Mystery String Printer (Cops)

Groovy Range <= 128 String: eert.scireneg.tcelfer.nu egami.twa.ava noitatonna.tcelfer.nu epocs.scireneg.tcelfer.nu snaeb.ava gniggol.litu.nu elbat.gniws.xava oin.ava trec.ytiruces.ava piz.litu.ava resrap.scireneg.tcelfer.nu elif.oin.ava ytilibissecca.xava emit.ava stcejbOevitcelfer.scireneg.tc...

This should be basically uncrackable

OK maybe not totally uncrackable

But if it is cracked I'll be pretty damn impressed

Mauris

17:13

Rare footage of Dennis promoting his esolang. youtube.com/watch?v=dWLFQd0lXjQ

quartata

Uploader has not made this available in your country

Wat

Optimizer

^

I see why its rare

DankMemes

"The uploader has not made this video available in your country."

muddyfish

^

DankMemes

rarer than the rarest pepes I guess

Sp3000

17:17

^

quartata

Any thoughts on my Groovy printer?

I want to make sure I didn't break any more rules...

muddyfish

before i do another one, is rot-13 encryption?

Calvin's Hobbies

What is?

DankMemes

no

muddyfish

ok

when i googled it, it said it was but it was so simple

DankMemes

17:18

the point of disallowing rand / crypto is because the only way to solve those is by brute force

rot13 is easy to decode

Calvin's Hobbies

It could be called very weak encryption

quartata

Oh nevermind.

DankMemes

so I posted this codegolf.stackexchange.com/a/60402/20666

quartata

Yeah, I'd say rot 13 qualifies as a cipher.

Mauris

I like the "gratis interpreter available" rule. I don't particularly feel like buying a TI-89.

DankMemes

17:21

ah didn't see that

well there are some emulators available

not that I could get one working on my windows system

Mauris

Well, I don't think this challenge has that rule!

DankMemes

welp

I thought I just skipped a rule and was afraid I'd have to delete my entry

Sp3000

I commented similarly on a Mathematica answer but... shrugs

DankMemes

hey I got an emulator working on my laptop

the thing is, you don't actually need TI-BASIC, you could solve it in another language and then port that

Calvin's Hobbies

Anyone know why horizontal lines aren't showing up between some tasks? They show up in the edit preview.

7

A: Sandbox for Proposed Challenges

Cramming The Gramming - Twelve Task Tweet Your boss just emailed you a list of 12 programming tasks he needs done as soon as possible. The tasks are simple enough but your boss, being a young software tycoon suckled by social networking, insists that your solutions be able to fit within a single...

DankMemes

17:35

they all show up for me

Martin Büttner

same here

Calvin's Hobbies

Oh! Darn browser slightly zoomed out

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

An Affinity for Ciphers You, an armchair cryptographer, have noticed that the first letters of each word in your neighbor's mail (yes, you read it -- how else would you know if he's plotting something?) look very suspicious put together. To make sure that his mail is safe to send to its destinat...

Calvin's Hobbies

^ posted 7 seconds ago, mustbe a new record for the postbot

Optimizer

If I know the last posting time, I can time my submission to come within 3 seconds

Martin Büttner

17:41

@Calvin'sHobbies 13 for clocks, probably not optimal

DankMemes

why is https on meta.codegolf giving me an SSL error?

Optimizer

meta be insecure

DankMemes

PhiNotPi

It's a known issue.

Optimizer

feature*

2

PhiNotPi

17:43

Meta does not support https

Eridan

The "The mystery String Printer" challenge is fun to work on, but it's hard to work around shortcuts in smaller programs. I had a Fishing program that was supposed to get to 65617 by squaring 9 twice and concatenating 7 but neglected to realize that it's easier to just write 65617... Oops

Martin Büttner

@Calvin'sHobbies 11 (subpar, yay)

Calvin's Hobbies

@MartinBüttner Now you've already got a score of 5 or 6. I need some Martin kryptonite for the last few to make it even ;)

@Doorknob What is Martin's biggest programming horror?

Martin Büttner

I haven't actually saved any of them (apart from the one I posted here)

@Calvin'sHobbies flood fill? (not in general, but in CJam definitely)

Doorknob

@Calvin'sHobbies uhhhh... Hexagony?

Martin Büttner

17:52

I think he meant "horror Martin fears" not "horror Martin created" ;)

Doorknob

oh, I didn't read the previous message for context :P

Calvin's Hobbies

"Output a story of the nightmare where you're forced to give your diamond to geobits."

Martin Büttner

Doesn't sound like much of a nightmare. If I was forced to give up my diamond I'd want him to have it.

Calvin's Hobbies

18:12

@AlexA. I hope it was 5

Alex A.

@Calvin'sHobbies Huh?

Martin Büttner

@Calvin'sHobbies Of course it was.

Alex A.

Oh, my favorite integer between 3 and 12!

Martin Büttner

I said there's only one correct answer. ;)

Alex A.

It's not 5, unfortunately (sorry Martin :P)

Martin Büttner

18:13

wrong

Alex A.

Okay

It's 5

Martin Büttner

see?

Alex A.

Sort of. I need new glasses.

@MartinBüttner No, I'm older than that.

Calvin's Hobbies

No

Alex A.

Yes

Calvin's Hobbies

18:20

I mean see context

Martin Büttner

@AlexA. Turns out you're actually 16.

Calvin's Hobbies

Yours is kinda boring though, just powers of 2 :/

Alex A.

22 hours ago, by Alex A.

Luckily I just turned 11.

Calvin's Hobbies

But anything more complex seemed sure to be too big

Optimizer

me too

Martin Büttner

18:22

@Calvin'sHobbies (I just noticed that and felt stupid for implementing the spec literally)

(Hence the update to 16)

Calvin's Hobbies

30 did seem long :P

Martin Büttner

I had 21

Optimizer

what did I have?

ಠ_ಠ

weshouldblamedoorknob.tk

2

Doorknob

uhhhhhhh

Optimizer

18:24

was the domain free?

PS: my suspicion that @ಠ_ಠ is @AlexA.'s sock is increasing day by day

ಠ_ಠ

@Optimizer Who is @AlexA. ?

Calvin's Hobbies

@Optimizer You can have chips

@Optimizer I promise my only sock is Geoborts

Alex A.

@ಠ_ಠ LOL doesn't even begin to describe what is happening to me right now

Calvin's Hobbies

and I wouldn't put it past Alex

But it could be lots of people

Optimizer

@ಠ_ಠ your socket master

Alex A.

18:26

ಠ_ಠ isn't me.

2

ಠ_ಠ

Alex A. isn't me either. (Better now?)

Alex A.

^ see?

Optimizer

yeah sure

Alex A.

I wouldn't use improper grammar like that.

Optimizer

and I am not Martin

quartata

18:27

What should I do about this? codegolf.stackexchange.com/a/60406/45151

ಠ_ಠ

Why would anyone use grammar anyway?

quartata

The problem is I don't have the older version anymore.

I swore when I went to edit the post I updated it.

In fact, I'm positive I did. I have no idea how this happened.

Alex A.

Elves

quartata

Right, but what should I do?

Martin Büttner

@Calvin'sHobbies I've got 133 bytes for the first 6 tasks now

DankMemes

18:28

@ಠ_ಠ lmao

ಠ_ಠ

@quartata Eat some candy.

Calvin's Hobbies

@quartata Right? It was elves?

quartata

Not actually helpful Alex.

DankMemes

that should be a subdomain of codegolf.xyz

quartata

@Calvin'sHobbies It wasn't elves. It was stupid ctrl-shift-c being copy.

My guess at least.

DankMemes

18:29

weshouldblamedoorknob.codegolf.xyz

2

ಠ_ಠ

@DankMemes Ping @minxomat

Alex A.

@quartata How often am I actually helpful? I mean really.

quartata

I really don't want to accept the crack because I put a lot of effort into it and I don't want it to get cracked because of such a dumb mistake. I guess I don't have a choice

minxomat

aaaah, I was asleep....

ಠ_ಠ

@AlexA. That is a good question.

DankMemes

18:30

wait you used <marquee>?

ಠ_ಠ

@minxomat Isn't it, like, 8pm in germany?

Alex A.

Haha

Martin Büttner

@Calvin'sHobbies are you going to add proper test sets to each task?

minxomat

I'm not currently in germany.

quartata

@ಠ_ಠ I want to see you and Alex post simultaneously.

Alex A.

18:31

@minxomat Did you come to Seattle to visit me? :D

quartata

Please.

Calvin's Hobbies

@MartinBüttner You mean more examples?

ಠ_ಠ

@quartata I am trying all the time, but @AlexA. is too late.

Alex A.

@quartata That would be difficult to coordinate since @ಠ_ಠ is not my sock.

2

minxomat

@AlexA. I tried, but TSA confiscated my bag of bird food.

Martin Büttner

18:32

@Calvin'sHobbies yes

Calvin's Hobbies

I feel most are fairly clear, no? But yes, I can add more later

ಠ_ಠ

@quartata has that been close enough?

Martin Büttner

@Calvin'sHobbies it's not about the specification being clear, but about submissions being correct :P

(13 for the digit groups btw)

Calvin's Hobbies

nice

DankMemes

Trying to upload an image but it fails with Uncaught ReferenceError: jQuery is not defined

ಠ_ಠ

Martin Büttner

18:34

@Calvin'sHobbies let me know when you've added more tasks

Calvin's Hobbies

@MartinBüttner Ok. I'm keeping 3 how it is btw, I don't want them all too easy ;)

quartata

So, should I just accept the crack deal with it and go cry in a corner?

Alex A.

@quartata I left a comment that hopefully will be helpful.

@quartata That really sounds like you're purchasing drugs.

4

> crack deal

2

DankMemes

^

Martin Büttner

@Calvin'sHobbies fair enough. even if you removed > it would still be impossible to do all 12 in CJam.

Alex A.

18:36

@DankMemes Better post to Stack Overflow. I heard they love jQuery.

DankMemes

lol i.imgur.com/dOLkgVR.jpg

2

minxomat

lol

Alex A.

lol

Doorknob

lol

Calvin's Hobbies

|o|

Martin Büttner

18:39

> Where are my legs?

Alex A.

You'd be more likely to find them if you use jQuery

DankMemes

$("[name=Martin]").find("legs")

minxomat

That's the StackOverflow conjecture: If you ask a question for something in plain JS, you'll get more JQuery answers than plain JS answers.

Alex A.

Proven using the Atwood Lemma.

Doorknob

Okay, kennytm is a wizard who uses black magic to achieve impossible tasks.

DankMemes

18:42

wow

Doorknob

That's the only logical conclusion to explain how he is demolishing the mystery string cops.

DankMemes

no

Alex A.

@Doorknob Well obviously someone who's able to trademark the name "kenny" is able to do wonderous things.

DankMemes

he's part of the NSA and has drones and satellites spying on you while you write your submissions

Doorknob

D:

2

DankMemes

18:43

:ᗡ

Alex A.

Or maybe he's your sock account.

ಠ_ಠ

Who?

Alex A.

kennytm

Doorknob

nah, I only have NotDoorknob :P

ಠ_ಠ

Oh ok.

Doorknob

18:44

... who is definitely not me

Calvin's Hobbies

@DankMemes I didn't know recreational programming was such an NSA priority

ಠ_ಠ

@Calvin'sHobbies We are in the drug business.

Alex A.

We are both the FDA and DEA.

ಠ_ಠ

FBI and CIA.

Calvin's Hobbies

Federal Doorknob Administration?

2

Alex A.

18:48

@ಠ_ಠ Those don't have anything to do with drugs

@Calvin'sHobbies Feral Doorknob Animal

ಠ_ಠ

@AlexA. But it sounds cool.

Alex A.

Okay, I'll give you that.

Doorknob

We need to call in the SEM (starboard explosion managers)...

Alex A.

FDA = Flawr Doorknob Alex

DankMemes

Flawr DankMemes Alex* :P

Alex A.

18:52

Dankknob

Doormemes

DankMemes

DankMemes ETHProductions Alex

Daniel M.

Does anyone know how to get a stack snippet to even work?
I tried an alert at the beginning of the snippet and nothing happened

DankMemes

my first guess would be that it runs in a sandboxed iframe that doesn't have allow-modals

lemme try it

Daniel M.

I'm not really a js programmer, but most concepts should be cross-language

DankMemes

yep Ignored call to 'alert()'. The document is sandboxed, and the 'allow-modals' keyword is not set.

Calvin's Hobbies

18:54

@DanielM. Is it posted somewhere?

Daniel M.

@Calvin'sHobbies It's the experimental snippet here: http://codegolf.stackexchange.com/questions/60328/the-mystery-string-printer-cops
I'm trying to splice together something from the leaderboard snippet

Calvin's Hobbies

Uncaught SyntaxError: Unexpected token } in browser console, so it can't run the js

Daniel M.

Ok, that's weird- I opened the js console and it started to work

Calvin's Hobbies

@DanielM. I got rid of that } and the alerts shows up.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Bitcoin Trading king-of-the-hill? This is mainly an idea for something I could potentially host on my KOTH server. Everybody knows that bitcoins are the next big thing. It's just a question of when they are going to take off. Right now, they are worth $250 each, but who knows, maybe someday ...

Daniel M.

19:08

Ok, I fiddled with it a bit more, and I got it to partially work as intended

Alex A.

19:21

CIA = @Calvin Is Alex

Calvin's Hobbies

CIA = Calvin Isn't @Alex

Alex A.

^ lie

I will finally admit it: @Calvin'sHobbies is my sock account.

El'endia Starman

Set those equal to each other and you have Is = Isn't.

You want me to pick up waffle cones? Oh, right, for the wine. One sec, let me just derive your son's credit card number and I'll be on my way.

Alex A.

Hah

Calvin's Hobbies

@AlexA. Yuh huh

@MartinBüttner added task 9

Alex A.

19:23

Yuhwhat now

Calvin's Hobbies

So why did you suggest to make a minecraft server and yet have your calvin ego make one? Seems roundabout

Alex A.

Well my usual account got un-whitelisted for inactivity so I just use Helka Homba, my other account.

Which I just realized doesn't answer your question at all

I did it to cover up the fact that you're my sock.

Calvin's Hobbies

@AlexA. Don't you mean your question?

Alex A.

Oh right >.>

Martin Büttner

@Calvin'sHobbies 28 but could probably do less

yeah, 23

Calvin's Hobbies

19:31

@AlexA. Quick, think of a task 10 me.

Alex A.

Task 10 you?

Calvin's Hobbies

you

Alex A.

I think you're missing a preposition

Mauris

@Sp3000 Any hints for this one? :)

Calvin's Hobbies

@AlexA. You want to claim me as a sock, you'll have to beat me in a challenge race.

Alex A.

19:33

D:

I've only ever posted two challenges in the entire time I've been here. There's no way I'd beat you, Calvin the Great of Challengeville, in a challenge race.

Calvin's Hobbies

You have made more challenges about giant food stuff than me

Alex A.

This is true.

1 > 0

PhiNotPi

Is it time for World Big Soda?

Alex A.

And its follow-up, World Big Type 2 Diabetes.

Martin Büttner

or maybe challenges about giant stuffed food.

Alex A.

19:45

Soylent green

Beta Decay

@AlexA. I'm surprised that you haven't noticed someone :O

Alex A.

@BetaDecay Uh what

Calvin's Hobbies

generate a realistic broccoli floret graphical-output

Alex A.

@Calvin'sHobbies This is relevant to my interests. Broccoli is awesome.

Beta Decay

12 hours ago, by Beta Decay

I feel like I'm late...

Alex A.

19:51

What, is Jesus a PPCG user now?

Beta Decay

View it in context :P

Alex A.

I did. I still don't get it.

Beta Decay

Peter!

El'endia Starman

OH.

I didn't get it the first time either...

Alex A.

Oh, Peter is back from his vacation?

Beta Decay

19:53

nods

PhiNotPi

Correction... PPCG is his vacation.

Alex A.

So he went on vacation from his vacation?

Why else would he have been gone for a week?

Or two or whatever

PhiNotPi

Death and rebirth?

Beta Decay

Didn't you see the whole challenge about it?! ;)

Alex A.

starts religion about Peter

PhiNotPi

19:58

Jesus was actually one of Peter's apostles, not the other way around.

Beta Decay

@El'endiaStarman Can you verify? :D

Transcript for