The Nineteenth Byte

Anonymous

5:00 PM

@MartinBüttner Exactly. C/Java/Python (usually) can't compete with CJam/Golfscript/Pyth, but we still want those solutions.

Geobits

It's no secret that I agree with that ;)

Anonymous

In fact I'd like to see a challenge where the Java answer is shorter than the CJam/GS/Pyth answers

feersum

"Print the names of all of the methods of the class java.lang.String ..."

VTCAKAVSMoACE

Question: Do 2D stack languages exist?

Thomas Kwa

I don't know @VTCAKAVSMoACE. That would be interesting...

VTCAKAVSMoACE

5:06 PM

I just added the functionality to mine, wanted to know if it existed elsewhere. >.>

Thomas Kwa

How does a 2D stack work?

VTCAKAVSMoACE

You have a stack... of stacks.

private static ArrayList<ArrayList<Double>> stac = new ArrayList(0);

And then later, you add the first stack. :P

TimmyD

14

Q: Write a code golf problem in which Java wins

Write a code golf task such that The only input (if any) required by the task is text from standard input, and the only output required by the task is text to standard output. There is exactly one correct output string of characters for every possible legal input as defined by the task. Each po...

code-golf

Thomas Kwa

There are a few languages with stacks of stacks

VTCAKAVSMoACE

> There can only be one!

Martin Büttner

5:10 PM

okay done, I sandboxed a new cat challenge... the longer we wait, the more people spend time on the old one...

VTCAKAVSMoACE

@ThomasKwa Can you give me an example? :D

Martin Büttner

@VTCAKAVSMoACE ><> I think

Thomas Kwa

@VTCAKAVSMoACE I don't remember off the top of my head, but go to Esolangs and search for "stack of stacks" or something

Anonymous

@TimmyD I meant a real challenge, not a horrible metachallenge that makes you want to give the poster a cranial rearrangement via baseball bat

Thomas Kwa

@MartinBüttner Awesome, we needed it.

New Sandboxed Posts

5:11 PM

0

A: Sandbox for Proposed Challenges

Simple cat-like program Sandbox note: I constantly come across our only cat-like challenge, thinking that it really doesn't do this rather important task justice. It's flaws aren't exactly the kinds of flaws that warrant closing the challenge, but at the same time it has some rather weird rul...

Martin Büttner

@VTCAKAVSMoACE Also I believe I've come across one or two esolangs that have a BF-like tape but with stacks instead of integer-cells.

VTCAKAVSMoACE

@MartinBüttner ><> uses substacks that only exist when you use [ ], I believe. They're destroyed after ].

Martin Büttner

so? it's a stack of stacks, right?

you can only ever access the top stack

VTCAKAVSMoACE

Yeah, but it doesn't exist program wide to be used at any point. :P

^ That needs rewording.

Martin Büttner

then what you want is not a stack of stacks

but an array of stacks or a tape of stacks or something like that

VTCAKAVSMoACE

5:14 PM

Hmm. Alrighty then.

Thomas Kwa

What about a 2D stack-ish thing shaped like a Young diagram?

Young tableau

In mathematics, a Young tableau (pl.: tableaux) is a combinatorial object useful in representation theory and Schubert calculus. It provides a convenient way to describe the group representations of the symmetric and general linear groups and to study their properties. Young tableaux were introduced by Alfred Young, a mathematician at Cambridge University, in 1900. They were then applied to the study of the symmetric group by Georg Frobenius in 1903. Their theory was further developed by many mathematicians, including Percy MacMahon, W. V. D. Hodge, G. de B. Robinson, Gian-Carlo Rota, Alain Lascoux...

Martin Büttner

@ThomasKwa sounds quite interesting

I guess my recent attempts at coming up with an esolang based on stacks of cups is similar

Thomas Kwa

The stack pointer would have two coordinates, and there could be "pop up", pop left", "push right" and "push down" commands.

VTCAKAVSMoACE

@ThomasKwa My language has this. o-o

Thomas Kwa

o—o

VTCAKAVSMoACE

5:18 PM

My stack (this probably isn't the right word...) of stacks could be visually represented like this:
4 7 9 6
5 7 5
2 3

TimmyD

@Mego Go for something that requires Unicode support, such as codegolf.stackexchange.com/q/57143/42963

VTCAKAVSMoACE

The thing is, you don't move right or left in the stack - the stack moves right or left relative to you, and rotates to make the first the last and vice versa when it goes past you.

Κριτικσι Λίθος

@MartinBüttner When is your "Simple cat-like program" going to come to PPCG?

Anonymous

5:48 PM

@ΚριτικσιΛίθος Why, gonna go for FGITW with the brainfuck answer?

VTCAKAVSMoACE

FGITW?

Beta Decay

Fastest

Gun

the

West

VTCAKAVSMoACE

Got it. ;D

Beta Decay

in

Κριτικσι Λίθος

@VTCAKAVSMoACE Fastest gun in the west

@Mego Which brainf**k answer?

Anonymous

5:50 PM

@ΚριτικσιΛίθος ,[.,]

Κριτικσι Λίθος

@Mego I am gonna go all TeaScript

@Mego For the already existing cat question, is this answer valid: here ?

Anonymous

@ΚριτικσιΛίθος Don't see why it isn't

Κριτικσι Λίθος

@Mego Alrighty then, 1 byte(TeaScript) vs 4 bytes(Brainf***). I think the winner will be obvious.

Anonymous

@ΚριτικσιΛίθος Catalog question, no winner :P

Κριτικσι Λίθος

@Mego ಠ_ಠ

Beta Decay

5:56 PM

:D

Martin Büttner

@ΚριτικσιΛίθος patience ;) ... at some point this week I guess.

VTCAKAVSMoACE

I haven't used any stars yet today and yet it won't let me star because I've "hit the limit". shakes head slowly

Anonymous

@ΚριτικσιΛίθος change your damn name so that can be the first autotab :P

Beta Decay

Change it to this: KριτικσιΛίθος

Κριτικσι Λίθος

@Mego autotab?

Anonymous

5:58 PM

@ΚριτικσιΛίθος @<tab> used to yield @ಠ_ಠ. It was great and convenient. Now it yields @ΚριτικσιΛίθος

Anonymous

And lol VTC, I saw that

Anonymous

It's next week silly, Sunday is the 1st

Κριτικσι Λίθος

@Mego My first autotab is @ಠ_ಠ :D

VTCAKAVSMoACE

@Mego I was going to steal Geobit's line, but I felt that would be rude.

feersum

θ_θ

We'll have to settle for this now.

VTCAKAVSMoACE

5:59 PM

@ΚριτικσιΛίθος Everyone's is. :D That's how I actually get that emoji in the first place.

Anonymous

@ΚριτικσιΛίθος That's because you don't get tab complete suggestions for yourself

Anonymous

2

Anonymous

Basically you're ruining everything

Beta Decay

@ΚριτικσιΛίθος ಠ_ಠ

Κριτικσι Λίθος

evil laughs: Mwah ha haha

VTCAKAVSMoACE

6:02 PM

@BetaDecay The face only appears after a few seconds. Seems more real.

Beta Decay

@VTCAKAVSMoACE :D

Anonymous

Proposal: we make @ΚριτικσιΛίθος's name the new ಠ_ಠ. He'll get so tired of all the constant pings that he'll change it.

VTCAKAVSMoACE

@BetaDecay I see what you did there. ;D

feersum

ΚριτικσιΛίθος_ΚριτικσιΛίθος

Κριτικσι Λίθος

Ελληνικά forever!

Beta Decay

6:03 PM

Huh?

Κριτικσι Λίθος

Ελληνικά is Greek for Greek

VTCAKAVSMoACE

@ΚριτικσιΛίθος I knew that one... simply because I need a quick way to type θ on my keyboard.

Beta Decay

Ooooo shots fired

VTCAKAVSMoACE

@Mego That's a bit much. o-o

Κριτικσι Λίθος

I am not from Greece, whatever gave you that impression :)

Beta Decay

6:05 PM

It's the hair

Anonymous

@VTCAKAVSMoACE Nah Greek economy jokes are so hot right now

VTCAKAVSMoACE

Κριτικσι Λίθος

@Mego But I am not from Greece.

VTCAKAVSMoACE

If at first you don't succeed...

Beta Decay

star, star again

VTCAKAVSMoACE

6:07 PM

^ Yup. Can't even star it. :c

Anonymous

@ΚριτικσιΛίθος_@ΚριτικσιΛίθος

Beta Decay

@VTCAKAVSMoACE Neither can I :(

Κριτικσι Λίθος

@Mego Yes, now my name is in the starred board!

@Mego ?

Anonymous

@ΚριτικσιΛίθος More Greek economy jokes :P

VTCAKAVSMoACE

@ΚριτικσιΛίθος > Kritiksi Stone

Google Translate is very confused.

Κριτικσι Λίθος

6:10 PM

@VTCAKAVSMoACE Google translate is correct this time

VTCAKAVSMoACE

victory dances I keep telling my teachers that...

Anonymous

Oh crap it's 1 pm and I haven't used all my stars... stars everything

3

Κριτικσι Λίθος

It's evening for me

Beta Decay

Yeah me too

Anonymous

I am from the great country of Texas

Beta Decay

6:12 PM

@Doorknob ^ He is one of your kind :D

VTCAKAVSMoACE

Oh, no, I forgot to do Calculus. O.O I'll be back after a rather extended space of time.

Κριτικσι Λίθος

@Mego You mean state

Anonymous

@ΚριτικσιΛίθος I mean what I said

VTCAKAVSMoACE

@ΚριτικσιΛίθος Country is correct. ;)

Anonymous

Texas is the 'murica of 'murica

Anonymous

6:12 PM

If you were from Texas you'd understand

VTCAKAVSMoACE

Republic of Texas

The Republic of Texas (Spanish: República de Texas) was an independent sovereign country in North America that existed from March 2, 1836, to February 19, 1846. It was bordered by the nation of Mexico to the southwest, the Gulf of Mexico to the southeast, the two U.S. states of Louisiana and Arkansas to the east and northeast, and the United States territories encompassing the current U.S. states of Oklahoma, Kansas, Colorado, Wyoming, and New Mexico to the north and west. The citizens of the republic were known as Texians. Formed as a separate nation after gaining independence from Mexico in 1836...

Beta Decay

If Texas dreams hard enough, it'll have a chance to be come independent and bottle it at the last minute like Scotland ;)

Κριτικσι Λίθος

I'm thousands of kilometres(not miles but kilometres) away from Texas.

Difference between American English and normal english

Anonymous

I remember people saying Texas would secede if Obama was elected... Last time they tried that it didn't go so well.

Anonymous

Get out of here with your metric smugness, everyone knows the best unit for distance is the Planck length

VTCAKAVSMoACE

6:16 PM

@Mego I remember people saying that the Super-Massive Hadron Collider would create a black hole.

Anonymous

@VTCAKAVSMoACE Large Hadron Collider, come on now

Anonymous

It would only be Super-Massive if it was in Texas

VTCAKAVSMoACE

I've always heard it being called Super-Massive. o-o But then again, the internet is weird...

Κριτικσι Λίθος

How many of you are from Texas?

Anonymous

Large Hadron Collider

The Large Hadron Collider (LHC) is the world's largest and most powerful particle collider, the largest, most complex experimental facility ever built, and the largest single machine in the world. It was built by the European Organization for Nuclear Research (CERN) between 1998 and 2008 in collaboration with over 10,000 scientists and engineers from over 100 countries, as well as hundreds of universities and laboratories. It lies in a tunnel 27 kilometres (17 mi) in circumference, as deep as 175 metres (574 ft) beneath the France–Switzerland border near Geneva, Switzerland. Its first research...

Anonymous

6:17 PM

raises hand

VTCAKAVSMoACE

raises hand Although I'm not currently there...

Κριτικσι Λίθος

Wonder if there will be a particle accelerator similar to the one in the Flash.

Beta Decay

Can people run really fast and wear tight latex in public?

VTCAKAVSMoACE

^ ... yes.

Beta Decay

They can?

Anonymous

6:21 PM

See: summer olympics

Beta Decay

Texas is probably better off as its own country then

Anonymous

Sure that's a logical conclusion from that discussion :P

Κριτικσι Λίθος

One reason why I like Texas is because of TI calculators

Thomas Kwa

TI's 83+/84+ series is slow and buggy.

The processor in a TI-84+ is a Zilog Z80, which was launched in 1976.

The new color one has an ez80, which would be about 12x faster...

Κριτικσι Λίθος

falls quiet

Thomas Kwa

6:26 PM

if TI wasn't so cheap with its ROM.

The ROM is, if I remember correctly, so cheap that every byte read from the operating system's routines requires nine wait cycles

VTCAKAVSMoACE

Get the new ones that people have made Pokemon emulators for.

Thomas Kwa

(this is a simple pipelined processor that has many one-cycle instructions, so it becomes as much as 10x slower)

Κριτικσι Λίθος

@ThomasKwa TI calculators are the only calculators I ever had.

VTCAKAVSMoACE

TI-84 Plus Silver Edition Calculator is the full name of it, I think.

Thomas Kwa

@ΚριτικσιΛίθος Me too, actually, but I hear HP's are better.

The newest one is the TI-84 Color Edition (2015), then before that the Color Silver Edition (2013), and the Silver Edition (2005ish?)

They've been making Pokemon for those calculators for a while.

Optimizer

6:31 PM

Fastest Kanye in the West?

Thomas Kwa

But until this year 84+ series was based on that late 70s processor, making graphing really slow.

Κριτικσι Λίθος

@VTCAKAVSMoACE My calculator is the TI 84+. I have created a simple game on it, but the frame rate was so low that it looked like the screen was blinking.

VTCAKAVSMoACE

> ... Plus Silver Edition...

Κριτικσι Λίθος

@ThomasKwa I agree, the graphing is slow

Thomas Kwa

Oh, right; they're all 84+; there's no 84 regular

feersum

6:33 PM

Well you don't want to make it too powerful -- then students won't be allowed to use it in exams!

Thomas Kwa

@ΚριτικσιΛίθος If you code right, you can usually squeeze a little more performance out.

Κριτικσι Λίθος

@ThomasKwa How? I tried ClrHome for clearing the frame. All code is under a while 1 statement. How do I make this code better?

Thomas Kwa

@feersum For a while people actually believed that TI intentionally made its calculators slow so graphing would be slow enough that teachers could make students follow along, or something

That wasn't true, they just don't have good assembly programmers.

@ΚριτικσιΛίθος Paste the code here if it isn't too big, and I'll speed it up.

Speed optimization in TI-BASIC involves many stupid tricks.

Κριτικσι Λίθος

@ThomasKwa Unfortunately I lost my calculator's USB cable...

Thomas Kwa

That's fine; what does the innermost loop look like?

Κριτικσι Λίθος

6:42 PM

@ThomasKwa I only have one loop.

Thomas Kwa

okay, what's in it?

Κριτικσι Λίθος

There is a ClrHome and getKey -> A

Thomas Kwa

What are you displaying?

Κριτικσι Λίθος

And depending on the keyPressed, I change the direction of the player: 4 if statements

Thomas Kwa

What's inside those If statements?

Κριτικσι Λίθος

6:47 PM

I change the value of the player's direction in those if statements

Thomas Kwa

No, the code.

Κριτικσι Λίθος

If A=26:1->P

Thomas Kwa

what happens if A=25?

Κριτικσι Λίθος

There are four similar statements, each for the different keys pressed

Thomas Kwa

can you just type in the code?

Κριτικσι Λίθος

6:48 PM

If A=25:4->P

Thomas Kwa

There's an idiom for moving a character around the screen

Κριτικσι Λίθος

If A=34:2->P

If A=24:3->P

Thomas Kwa

getKey->K:X+(K=26)-(K=24->X:Y+(K=34)-(K=26->Y

that changes the X/Y position

Also, use Output to display a space where the player was before instead of using ClrHome to clear the whole screen, if that's all you're changing each frame.

Κριτικσι Λίθος

In my game, the arrows keys don't change the player's position, it changes the player's direction so that the player does not have to press a key repeatedly

New Main Posts

0

Q: Counting and spelling up

Write a program that takes as its input a string that outputs a string with the following properties. If a character in the string is an uppercase letter (ASCII 41-5A), then the character is replaced by a string containing every letter up to and including the original letter in upper case. For ...

code-golf

Thomas Kwa

6:52 PM

Okay, just put the two last lines in an If K block.

Κριτικσι Λίθος

@ThomasKwa You know what, I will post the source code at GitHub later.

Thomas Kwa

@ΚριτικσιΛίθος mkay

Κριτικσι Λίθος

Right now it is night for me.

Good night!

Thomas Kwa

'night

Calvin's Hobbies

7:19 PM

@ThomasKwa Didn't realize you asked for spoilers. Alright then :)

Thomas Kwa

@Calvin'sHobbies what do you think of the TI-BASIC submissions?

VTCAKAVSMoACE

@CᴏɴᴏʀO'Bʀɪᴇɴ Looks like Simplex wins this one.

... except I have a builtin for it. :I

Thomas Kwa

Does Pyth have a commute operator?

Calvin's Hobbies

@ThomasKwa Lookin good I suppose, though I barely know TI-BASIC

Thomas Kwa

jacobly's Task 8 is really elegant

New Main Posts

7:31 PM

0

Q: Variant of racetrack with exact finishing point and zero terminal velocity

This is my first challenge here so bear with me when there are any issues. Let me know and I will fix them - Thank you! Introduction The challenge is a very interesting variant of the game racetrack and those two challenges: To Vectory! – The Vector Racing Grand Prix Program a Racing Car...

code-challenge path-finding physics

Digital Trauma

@MartinBüttner done

Stewie Griffin

Hi guys! It's been in the sandbox for a few days and I think the challenge is ready to be posted. I believe it's a challenge that can get a lot of comments "What about...", "What if...", so I'd love some final input! Have I forgotten something?

feersum

7:49 PM

@StewieGriffin It's totally unclear what range of header formats must be supported.

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