The Nineteenth Byte

And I have quite an error in it, when being followed by an enemy and getting against the wall, instead of moving to the side it bounces and that makes it get eaten

flawr

is there anything you suggest doing?

Jeff Baxter

When will the competition end?

I wish I could join...

rcrmn

But I didn't find out till this morning and now it's to late to fix it

Sp3000

@JeffBaxter Not at least for another week or two, says Calvin

rcrmn

1:46 PM

I wish you would not, we are already having a hard time, us reds... Please, more red people!!

Jeff Baxter

Good. By the way I'm red:)

rcrmn

Oh wow! that's true

sorry, I looked at your user ID in the chat, but you have your main account in another site and there you have an odd ID

Then, please join!

flawr

@PhiNotPi i really don't know what i could contribute more, all of the tactics i could think of are covered by other bots

rcrmn

It would be great to have someone to take profit of Ismael's bot

PhiNotPi

@flawr I think the simplest option is a bot that locates and join up with SphiNotPi3000. Then, kill any enemies that approach.

Of course you can contribute.

If our pair of bots gets teamed up on by a pair of enemy bots, we need you to be there to break the tie.

Sp3000

1:51 PM

I think, tactically speaking, it's easier to wait and see what red comes up with first :P

flawr

hm is it allowed to copy other peoples code and modify it?

Jeff Baxter

Do we red have to team up or lose?

Sp3000

Probably best to ask Calvin if not sure

rcrmn

Yep, teaming up seems to be the best strategy right now

Sp3000

I think Wasmoo and Minos are copies, or at least similar

rcrmn

1:52 PM

Ismael built a bot that let's other bots send him orders for what to do

but I'm not sure on how it works

PhiNotPi

I think it's surprisingly hard to give orders to other bots.

rcrmn

Ismael's bot only takes orders, doesn't do anything else, I believe, so it would not be that hard, would it?

TheBestOne

@Optimizer Yes

rcrmn

@JeffBaxter there's this chat chat.stackexchange.com/rooms/22548/…

Jeff Baxter

Thanks.

PhiNotPi

1:59 PM

@flawr I'm not sure

Don't copy from the other team, of course.

flawr

ok, then i try to write my own

is there a way to test before sumission?

PhiNotPi

yes, there is a post in meta for that

rcrmn

also

in the screen, bottom left, you can see a textbox and a button that says "Reload with test entry"

flawr

thanks!

PhiNotPi

That's probably better since you're only testing a single bot.

rcrmn

2:05 PM

it loads the code inputted in the textbox as a bot with named TEST ENTRY or something like that

You will have to check the "On Red Team" checkbox, since it loads it as blue team by default

PhiNotPi

(flawr is blue, since his PPCG ID is odd, even though his chat ID is even.)

rcrmn

Sorry, I confused him with Jeff

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Sliced up circle code-golf geometry You should write a program or function that given an N by N equally spaced square grid and a solid inscribed circle outputs or returns the number of slices the grid cuts up the solid circle. 0-sized slices (i.e. when the circle only touches a line) are not c...

randomra

^ a simple golf, if it seems ok, I will post it

Sp3000

"number of squares which are overlapped partially or fully by the circle"?

Not sure if that's clearer

In any case, you might want a test for N = 5 where (3, 4) is a lattice point intersected by the circle

PhiNotPi

2:21 PM

Tips for golfing in Whitespace, anyone? codegolf.stackexchange.com/questions/48442/…

Sp3000

"Use an IDE with syntax highlighting"

randomra

2:32 PM

@Sp3000 Edited. N=10 was already an example, but added once more separately. (N=5 is half as small)

Sp3000

I meant a picture, but okay :P

randomra

I'm lazier than that. :/

Sp3000

:P k

TheBestOne

I should make my bot attack bots with id -1 :)

flawr

2:52 PM

does anyone know how to fill an array with random numbers in javascript?

(new Array(10)).fill(Math.random()) just produces a list of the same number repeated

Optimizer

apart from looping over and stuff ?

flawr

that is too pedestrian^^

there are tons of functions of array objects, is there no more elegant way?

Doorknob

Array(10).fill(0).map(Math.random)

flawr

ah thanks that was what i was looking for!

is there some way of debugging?

alert() does not work=/

PhiNotPi

There is a debug button in the very bottom left. You can use setMsg() and any messages will be displayed, aloing with allo fhte move information of all the other bots too.

Doorknob

3:00 PM

Just console.log it?

flawr

in the console there is total overflow of information, but i cannot find my console.log outputs

is there a way to just show my logs or my outputs?

PhiNotPi

* along with the

Doorknob

There should be a button titled "Logs" or "Info" in your console; click that to show only console.log output.

flawr

where can i find those? i can only find a checkbox "preserve log" right now.

ah via filter

TheBestOne

f12, then navigate to console tab.

randomra

3:13 PM

what is the best-practice in python for calling functions with mutable objects (eg. lists)? do the caller copies it before call, or the called function makes a (deep) copy, or the caller creates an immutable version or something else?

Sp3000

Depends what the function does?

I mean, .sort() is inplace so it doesn't copy, but sorted returns a copy

randomra

I don't want to modify the parameters

(i.e. the sorted case )

Sp3000

I'd imagine if you want it to be like sorted then the function should copy, so you don't get bugs from people forgetting to copy

If you're worried that deep copying all the time is bad for performance, I guess you could use a flag?

randomra

@Sp3000 right, thanks, now it seems obvious :)

how would the flag thing work though?

Sp3000

Keyword argument? Like itertools.product(..., repeat=5) or print(..., flush=True)?

flawr

3:21 PM

again a question to this blue&red challenge: why doesnt console.log("TEST TEST TEST TEST TEST");return 1; work?

randomra

@Sp3000 I see, and learned about flush=True

PhiNotPi

@flawr It works for me.

You can turn debug messages off to remove all the clutter.

Pietu1998

I'll ask you a question. If you were asked to, would you run this on your computer? pastebin.com/20vaC7SY

PhiNotPi

Ehh.... probably not.

TheBestOne

@Pietu1998 It looks like some code I submitted for a golf challenge once.

Pietu1998

3:32 PM

Funnily enough, even though it isn't malicious, Pastebin did not require a captcha. I could've easily hidden anything there. Every time I submit a legit UserScript etc. I'm presented with the friendly "spam prevention"

PhiNotPi

Python is nice, isn't it?

^ That's what I got

Pietu1998

Yup

That's 100 layers of Zlib + base64

randomra

> Ehh.... probably not.
...
> That's what I got
Wow, did you do it in mind? :)

PhiNotPi

Yeah, I'm really good at reading multi-layered Base64 encoding.

Pietu1998

3:47 PM

The thing is one could just put "os.system('del C:\Users')" there and watch. You'd never know.

PhiNotPi

I golfed your code: cjam.aditsu.net/…

Pietu1998

Nice, thanks, though the obfuscation could be less obvious :D

Optimizer

@PhiNotPi its one char less in pyth

3

randomra

@PhiNotPi damn, CJam always much shorter

Pietu1998

Someone needs to do it in Java

Sp3000

3:57 PM

@Pietu1998 30287904610620644098254837926916722400342501016369727 128b:c obfuscated enough?

Pietu1998

sure enough

CJam is just the reason nobody does atomic-code-golf :D

Sieg

4:19 PM

What can't you find in Stack Exchange? I just came across the Linguistics SE.

Ilmari Karonen

4:50 PM

@Sieg area51.stackexchange.com/?tab=progress

Yet.

Sieg

Fair enough.

Martin Büttner

5:03 PM

18

Q: Paralell projected voxel terrain generator

Your job is to generate a heightmap and show it as a paralell projected, voxel landscape. The rules are the following: The (heightmap of the) landscape has to be randomly generated You also have to describe how the algorithm you are using works, so everyone can learn something new here You have...

PhiNotPi

"paralell"?

Sieg

"magic"

PhiNotPi

I'm fixing that misspelling.

Sieg

You're fixing fun.

PhiNotPi

5:34 PM

Today I checked out "moderators.SE" for the first time since it was in Private Beta.

It's so empty.

First off, it changed it's name to "communitybuilding.SE"

Second, it's been over two weeks since a new question was asked.

Sp3000

5:47 PM

So apparently regex groups are numbered in order of left parens. Oh boy...

Martin Büttner

@Sp3000 what did you think? :)

Sp3000

It's easier for my parser to do it depth first :(

So I've had it wrong this whole time

Martin Büttner

isn't that depth first?

Sp3000

*deepest first

Martin Büttner

oh, right

Sp3000

5:51 PM

btw would you happen to know whether recursive regexes capture? e.g. does (?2) capture into group 2?

rcrmn

@MartinBüttner Thanks Martin! Well, I'll post it soon in the sandbox and see if it's too close or not

Martin Büttner

@Sp3000 I don't think so.

capturing with recursion is weird anyway

Sp3000

Hm k, well that makes things a bit easier... (I think)

Martin Büttner

nope: regex101.com/r/gJ1eJ2/1

Sp3000

k

PhiNotPi

9:15 PM

Is is considered unhealthy to listen to the same music video 20 times?

Optimizer

just listening to a music video - yes

which one ?

Pietu1998

Are you listening to the same video multiple times, or is it a /\d+ hours/ video?

In the second case you are technically only listening once, if even that much

PhiNotPi

I've been kinda alternating the original and a cover.

Optimizer

I think he clearly said "20 times"

Pietu1998

Also repeating a 10-hour video 20 times in a row can probably be bad for your health.

Lembik

9:20 PM

hi

2

long time no hang out :)

Optimizer

Hi

Lembik

I had an idea for another challenge :) I hope more successful than some of my previous ones but who knows

PhiNotPi

But I've also been mixing in some miscellaneous other music.

Optimizer

you n me are totally incompatible

Lembik

given a square matrix with only 1s and 0s in it, test to see if some permutation of the rows makes it en.wikipedia.org/wiki/Toeplitz_matrix

what do people think?

PhiNotPi

9:23 PM

@Optimizer were you talking to me?

Optimizer

yes

PhiNotPi

what music do you listen to?

Lembik

is no one talking about programming challenges here :) ?

Optimizer

@PhiNotPi mostly pop / billboard hits

TheBestOne

@Lembik No

Alex A.

10:19 PM

Did someone say music? soundcloud.com/bill-conrad-doerrfeld/a-redefined-heartbeat-alex

Hello Calvin

Alex A.

10:31 PM

Hello Melons

Hello Jakube

VisualMelon

Hello Alex

Alex A.

How's it going?

VisualMelon

I can't say I'm convinced by this notion of dividing the score by the number of mirrors handled

Alex A.

If you're talking to me, I have no idea what that means.

VisualMelon

oh, sorry

I get you can Carpet Python the wrong way round

ignore me

Alex A.

10:35 PM

Haha

No one has ever told me that they confuse me with Carpet Python. He's much, much better at Python than I am, so I should be honored!

I also assume that he has some expertise in the area of carpets...

Calvin's Hobbies

Or maybe he keeps a python in his car as a pet

5

Alex A.

Haha

I really hope that's true

VisualMelon

nah, it's just because you edited his challenge, and I get distracted by the goose, and get way of Piste

Alex A.

I edited his challenge?

PhiNotPi

Star so CarPetPython will see.

VisualMelon

10:41 PM

11

Q: Find a mirror configuration to match laser destinations

UPDATED SCORING: As this challenge is more difficult than I anticipated, I have adjusted the scoring. A program that can solve a single mirror input is a valid answer. More sophisticated programs get a bonus to their score. There have been several puzzles on PPCG to find a laser path in a box of...

code-golf grid

Doorknob

CarPetPython*

Alex A.

Oh right, he spelled "configuration" wrong in the title.

VisualMelon

aye

Alex A.

So my goose swept in and distracted you

PhiNotPi

I'm autorunning 100 battles.

To see what the new stats are.

Optimizer

10:45 PM

y bother ?

PhiNotPi

y not?

Alex A.

I was literally about to write the same thing

@Optimizer: Are you participating in the red vs. blue chaos?

Optimizer

not yet

PhiNotPi

You know what they say: great minds think similar things

Alex A.

Hah

@Optimizer: What team would you be on?

PhiNotPi

10:47 PM

red

Alex A.

O__O

He is the enemy

PhiNotPi

What if we are the enemy??

Alex A.

Mind = blown

PhiNotPi

Okay, no more GIFs in chat.

Alex A.

Oh I missed it. What was it?

Hahaha what the hell

Pietu1998

10:53 PM

Wait, I missed it twice now :D

PhiNotPi

Should I post it again?

Alex A.

@PhiNotPi: Maybe just post a URL instead if you don't want GIFs in chat

yes

5

Blue is doing grand

10:54 PM

OK what am I looking at :D

Alex A.

@Pietu1998: His mind has been blown

@Calvin'sHobbies: All glory to the blue team!

PhiNotPi

Now that it has 4 stars, I'm not deleting it. :)

Alex A.

That's what happens to my mind every time I think about how young everyone is here.

Well, most.

PhiNotPi

@AlexA. I find this demographic interactive interesting.

It allows you to see what percentage of the world's population is younger than you.

Alex A.

Whoa. That's really cool.

5,421,490,000 in the world when I was born.

PhiNotPi

11:01 PM

There's the "My place in the population tab" which is neat.

Alex A.

41% younger. This is really cool!

PhiNotPi

It allows allows you to change the year to predict what that percentage will be in, say, 2020.

Alex A.

Not a huge change in 2020. I'll be 30, 48% younger.

Now 2070 is a different story

94% younger

Oh god, 10% of my birth cohort is dead

PhiNotPi

Only 50% of people around the world make it to retirement age. :)

Alex A.

o_o

On a very different note, I wonder if @Optimizer's icon is actually a pet llama.

Optimizer

11:08 PM

llamas cannot be petted

they are badass

Alex A.

Is that the llama from your icon??

Optimizer

that is not the source. they also used from where i used

but that pic pretty much explains llamas

Alex A.

Haha

Do you have a lot of experience with llamas?

Optimizer

Alex A.

Incredible

@Optimizer: Are you also young? So far the only person I've come across here older than me is rolfl, which is weird because I'm not that old.

Optimizer

11:13 PM

llamas don't get old

Alex A.

The immortal llama

Your llama, my goose, and rolfl's monkey should team up to eat VisualMelon's lemons.

Optimizer

he has melons

not lemons

Alex A.

You sure? Those sure look like lemons in his icon

randomra

@Optimizer the CJam link can't deal with the %1b in your code

Optimizer

works fine for me

randomra

11:23 PM

I get unicode 001b at the end

Optimizer

oh.

try now

randomra

hmm, Chrome is fine though

PhiNotPi

Pixel results: 12/87/1

randomra

now Firefox doesn't load any code at all

not that important, just noted

Calvin's Hobbies

Y'all ready for some answer chaining?

Optimizer

11:32 PM

right now ?

Alex A.

What does that mean?

Calvin's Hobbies

Well in a few hours, I still need to write it...

Alex A.

What is answer chaining?

Optimizer

@Calvin'sHobbies going to sleep now. hopefully it will be answered a lot by the time i wake up

Alex A.

@Optimizer: Good night!

Calvin's Hobbies

11:34 PM

@AlexA. codegolf.stackexchange.com/questions/40376/…

Alex A.

Oh I had forgotten about that challenge!

Calvin's Hobbies

I think we (I) forgot to actually tag them correctly

PhiNotPi

What challenge is this, one that doesn't exist yet?

Pietu1998

Apparently <del>44</del> just doesn't work.

Calvin's Hobbies

Yes, I think I've got a good idea for one

Alex A.

11:37 PM

I'm looking forward to it!

@Pietu1998: Use <s>

Pietu1998

@AlexA. No effect. The lines on the 4's blend smoothly with the overline

Optimizer

striked out 44 is still normal 44 :( — Optimizer Mar 24 at 8:22

PhiNotPi

Here's a potentially bad idea for another red/blue challenge: each team has a single bot, and each participant can only add code to the bot.

Optimizer

how about each participant vote to do some action and the majority vote gets done

Pietu1998

@Optimizer   to the rescue

PhiNotPi

11:40 PM

~

Optimizer

~~~~~~~~~~~~

Pietu1998

how do you do overline in chat?

Martin Büttner

do you mean <s>?

three hyphens

Pietu1998

~~<><~~

all right

PhiNotPi

Apparently someone's still making Llamas with Hats videos.

luser droog

11:54 PM

Hey, everyone. I'm working on adding multiprecision integers and rationals and stuff to inca. Do any of the other golfing languages do that ????!

Martin Büttner

what are multiprecision integers?

luser droog

The scheme I've come up with is borrowed from integer encodings in lisp. We steal a few bits from the top of the integers used to represent the basic "number type". With a tag of zero, the remaining value is the integer value. With a non-zero tag, the tag represents a table-selector, and the remaining value is an index into that table. The various tables will store full-width integers, floating-point values, what-have-you.

Multiprecision integers are integer values that can be larger than the machine word (32 or 64 bit usually).

So you have to store a sort of string-of-digits of integers. It's also called a Bignum.

Martin Büttner

@luserdroog oh right, I've only heard the term "arbitrary precision integers"

yes CJam has it

Pyth probably too, since it's built on Python

Pietu1998

To my knowledge, it does

Not the "I can do any program in 3 tokens" functions though

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