The Nineteenth Byte

El'endia Starman

10:00 PM

@redstarcoder Me? Well, I don't find that type of challenge very interesting, so I couldn't tell you.

Pavel

Well, it's open now!

Hopefully more answers will come in.

Downgoat

I mean the "random webpage" idea is interesting, but I dunno if the challenge is going in that direction

redstarcoder

@El'endiaStarman Haha alright :). I just want to figure out a useful net instruction for *><>, then those types of challenges would be very interesting for me.

Pavel

Pop a string of the stack, push the entire text of that page?

redstarcoder

If I make it just TCP it'll probably work similarly to that, but it'd buffer the page and you could read one byte at a time with i

If I make it parse web pages I'll probably get more creative than that.

quartata

10:04 PM

@Downgoat When are you going to clean up all these branches in Cheddar :P

I just took a peek right now and I don't even know what's going on

Downgoat

waddya mean, I'm using all of them! :P

quartata

Hmm we only have two branches currently. I think we need more

El'endia Starman

@quartata When we need them.

quartata

I know, I'm just kidding

Downgoat

btw, do you guys have fancy changelog generator yet

quartata

10:09 PM

?

Downgoat

like from your commits it takes those and makes nice changelog?

quartata

Well considering only two people are looking at the git log anyways no

In general if there's a change we'd notice and we'd also know who did it

Namely the poltergeists that have infected our C9 workspace

TrojanByAccident

is there a TIO for /// ?

Pavel

Yes

quartata

@TrojanByAccident slashes

TrojanByAccident

10:11 PM

K

Downgoat

@TrojanByAccident yes

Pavel

I saw your message, typed out a link, pushed send, and accidentally sent it to talk.tryitonline.net somehow?

tio.run/nexus/slashes

TrojanByAccident

Interesting

Wheat Wizard

CMC: Write a Brain-Flak program that outputs the number of cycles it takes to run.

Pavel

@Downgoat is that website just directly piping everything to TIO?

Downgoat

10:13 PM

It uses TIO backend but has different frontend

so yeah

Pavel

What does vim mode do?

The donate link is a 404

Downgoat

It lets you use vim commands. E.g. :%s/foo/bar/g or dd etc.

Pavel

TIO is also really nice 'cause it generates a PPCG post for you.

Wait, I can't type things.

In vim mode

Downgoat

Didn't work on safari so I didn't think of adding that

@Pavel click a or i

Pavel

Oh, yeah.

How much traffic do you get to there?

I think everyone just uses tio.run

@WheatWizard would () work?

Downgoat

10:17 PM

@Pavel idk

Wheat Wizard

@Pavel No that doesn't output anything. To output you need to push

Downgoat

@Pavel yeah, I just made it because I didn't like TIO's official design :P

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Downgoat fuck

now somebody tells me

still then it's goat 2016

time to improve, it's your new years resolution

Downgoat

2016 was bad year, why does that have to be year of goat :(

Eᴀsᴛᴇʀʟʏ Iʀᴋ

nah it isn't

it's just that's your quote for 2016

try to get a new one starred for 2017

Pavel

10:25 PM

@WheatWizard how does brain-flak measure cycles?

Downgoat

CMC: Take a double and convert it to a hex string in C++

pls

Wheat Wizard

@Pavel Nilads are 1 cycle every time they are run (e.g. () is one cycle) monads are 2 cycles one for each paren

Ok

@Downgoat CMC?

chat-mini-challenge

10:31 PM

Holy hell that Sherlock episode

Wheat Wizard

@Downgoat What do you mean by a hex string

TrojanByAccident

@Downgoat oh

Downgoat

@WheatWizard e.g. 255 -> FF

Wheat Wizard

@Downgoat What about the decimals? what is 255.5

Is it just a base conversion?

Downgoat

@WheatWizard That would be FF.8

Wheat Wizard

10:33 PM

So it is a base conversion?

Downgoat

yeah but with double

muddyfish

@Downgoat thanks! Now back from watching Sherlock. I created it with GIMP

Downgoat

Hm... is there a way to loop through the va_list?

I don't think so beacuse compiler wouldn't know how to do the memory

though it could always do union magic

feersum

If you have a va_list, you are probably doing something misguided.

Downgoat

I am trying to make an interface for snprintf

feersum

10:38 PM

In pure C?

Downgoat

no C++

feersum

Why do you need to do that?

Downgoat

Because I have wrapper objects (v8::String) or (CheddarNumberInterface) that I need to unwrap before passing to snprintf

feersum

You're trying to make an snprintf function in Cheddar that forwards to the C library implementation or what?

Downgoat

is there something wrong, with that?

I dont see why I should reinvent wheel with (s)(n)printf

Pavel

10:43 PM

@WheatWizard tio.run/nexus/brain-flak#@6@hoampER0LwjASQSOzUNnoPBC/…

acc='(())'
for i in range(7):
    acc+='('+('[]'*(i+1))+')'
acc+='({}<>)@cy'
print(acc)

feersum

It would make more sense to have a specification of how sprintf should work, and implement it yourself.

Pavel

I generated it with that python script and adjusting the range until it converged

Wheat Wizard

@Pavel Interesting approach

I have a shorter solution if you would like to see

Downgoat

@feersum that is what I have now but most of the cheddar primitives (string, number) are in C++ anyway :/

Pavel

Hit me

TrojanByAccident

10:45 PM

*hits @Pavel*

Pavel

*slaps @TrojanByAccident with a large trout*

TrojanByAccident

lol

feersum

If you use the C one, you expose yourself to the vagaries of the platform implementation. There are actually signifcant differences which will result in different outputs.

TrojanByAccident

I'm kinda annoyed that I can't do your OEIS question in JS, though. :/ "XMLHttpRequest cannot load oeis.org/A280629. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://codegolf.stackexchange.com' is therefore not allowed access."

Wheat Wizard

@Pavel tio.run/nexus/brain-flak#@6@hoampER0LwjASQSOzUNnoPBC/…

Pavel

10:48 PM

That's the same link as the one I sent

Wheat Wizard

@Pavel My bad: tio.run/nexus/brain-flak#@6@hoaEJg5rVtZoOyZX////XTQEA

must have not copied the new one

feersum

And I forgot to mention the much worse problem... that you can crash in the C library.

If the format string doesn't match the arguments.

Pavel

Is there a list of debug flags anywhere?

Wheat Wizard

6

A: Tips for Golfing in Brain-Flak

Use Debug flags You might not know it because we haven't written it anywhere but Brain-Flak has debug flags and they are really useful. They can be placed anywhere in the code and will run when the command line flag -d is present. Here is a quick rundown of the debug flags. Most flags come in...

Pavel

You know, if GolfCpu actually took off, this could be it's own challenge

Wheat Wizard

10:51 PM

that is currently the only complete list I know of at the moment

Pavel

On the other hand, it would only be intresting in BF derivitives.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Compute the Median code-golf Challenge Given a list of real numbers, compute it's median. Definitions The median is computed as follows: First sort the list: if the number of entries is odd, the median is the value in the center of the sorted list, otherwise the median is the arithmetic me...

flawr

@NewSandboxedPosts I was astonished to find that we haven't had a challenge about computing the median.

But perhaps I overlooked any?

Pavel

11:09 PM

@flawr ban builtins

Or you'll get ony byte in MATL.

flawr

@Pavel what kind of builtins?

Pavel

To compute the median of a list

flawr

what about sorting?

trichoplax

That's a major problem with banning builtins

Pavel

I don't know MATL, but Mathematica sorts the list for you.

So Matlab probably does to

So MATL has a one-byte built-in.

flawr

11:16 PM

But I don't like banning builtins

Pavel

Ok

trichoplax

It's a divisive issue, but I personally prefer not banning builtins too

It's often difficult to say where to draw the line, so easier not to ban anything

VisualMelon

Are questions about meta on-topic on meta?

flawr

@Pavel I just checked, MATL does not have a builtin.

@VisualMelon You'd have to go to meta meta

Wheat Wizard

12

Q: Closing as Duplicate on Meta

There are some questions about the setup of the site that get asked time and time again on Meta. These include allowing code-golfing languages, language-based handicaps, duplicate-closing on the main site, and others. Whenever these questions are asked, they are immediately closed as duplicates,...

VisualMelon

11:21 PM

I was expecting "Not sure, you'd better ask on meta", but that works to

flawr

:D

VisualMelon

@WheatWizard can I take that as a yes? ;)

Wheat Wizard

yes

Pavel

github.com/LegionMammal978/Mthmtca

wat

I just spent the longest time putting together a regex to match decimal numbers

This is what I came up with

^(-|)\d*(\.\d+(e\d+|)|)$

Pavel

11:26 PM

\d+\.?\d* doesn't work?

[1 or more digits][optional decimal point][0 or more digits]

quartata

Don't forget -?

Pavel

What's -?

Oh, right

-?\d+\.?\d*

@wat ?

What about -.7?

-0.7

11:29 PM

Do you need it to not match anything that isn't a decimal number?

Is it OK to match numbers that have a decimal point but zero decimal places, like 7. ?

New Main Posts

0

Q: Compute the Median

Challenge Given a list of real numbers, compute it's median. Definitions The median is computed as follows: First sort the list: if the number of entries is odd, the median is the value in the center of the sorted list, otherwise the median is the arithmetic mean of the two values closest to...

code-golf statistics

Pavel

Yeah, it would be useful to know exactly what's needed there.

trichoplax

@NewMainPosts posted in chat within 1 minute of posting to main. Already has an answer.

Also more complicated if you want to match 7. and .7 but not just .

Destructible Watermelon

how about -?\d+(.\d*)?

though doesn't match .8

Pavel

^New main posts right now

trichoplax

11:35 PM

I guess I shouldn't split my statements into two sentences if I don't want them memed...

Destructible Watermelon

actually the second * in my regex should have been a +

trichoplax

Would that then match .?

Pavel

If you say input format requires 0.8 rather than .8, it works.

flawr

@trichoplax This senteces can again be split into two parts:)

Pavel

No, a leading digit is required.

trichoplax

11:38 PM

@flawr Yes but at least I didn't do the splitting myself this time

@Pavel Out of interest, is that a pre-existing phrase or created new for this event?

Pavel

Bad luck brian is just general purpose

trichoplax

I mean the overlaid words

Pavel

Oh no I made that

trichoplax

Ah right. I was wondering if there was some weird coincidence...

El'endia Starman

@trichoplax Imgur at least has made it really easy to create memes and share them.

trichoplax

11:47 PM

@El'endiaStarman I've never made one, but I'd gathered there were tools readily available. I just made the mistake of putting a full stop in the middle of my statement, resulting in it being memed within minutes

Pavel

I used imgflip.com

First search result for 'Bad luck brian generator'

trichoplax

In fact, I wonder whether my choice of sentence structure there is a symptom of overexposure to memes

El'endia Starman

@trichoplax I'm not sure leaving out the full stop would've prevented the memefication of your quip. :P

trichoplax

Hmmm

Pavel