The Nineteenth Byte

Sherlock9

9:00 AM

@KennyLau @MarsUltor Thank you both for your answers

Katenkyo

@zyabin101 program it as A lipogram! \o/

It will be a liprogram

zyabin101

@Katenkyo Uhh, I'll create a Stack Exchange chat room. :/

Katenkyo

@zyabin101 Yes, but won't you put a bot in there that will alert when someone used the banned letter?

Mars Ultor

@Sherlock9 If you want to calculate entropy that way, it's going to be really slow

Sherlock9

I think my friend was just curious

Mars Ultor

9:05 AM

Maybe the number of moves using a well-defined method would be better, and a lot faster

Sherlock9

And I'm aware that the algorithm is humongously expensive

zyabin101

@Katenkyo Nope. I'll let the community alert. I'll pin an alarm message (for example, *BUZZ*) and the community uses it whenever someone uses the banned letter.

Mars Ultor

@Sherlock9 It's not even really an algorithm, more like brute force

Sherlock9

Brute force counts as an algorithm :D

2

It's a sequence of steps. It's just a really inefficient sequence of steps

Katenkyo

@zyabin101 we can't use it if the link to it contains a bad letter D:

zyabin101

9:08 AM

@Katenkyo Uhh, then only parsed messages count?

I mean, the content of the message you see in chat.

Katenkyo

@zyabin101 I think everybody would do it this way ^^

zyabin101

@_@

Also, I can't serve a bot all day.

Mars Ultor

@zyabin101 Why not?

zyabin101

@MarsUltor I have to sleep, as does my computer.

Mars Ultor

Your computer sleeps? o.O

zyabin101

9:13 AM

@MarsUltor Nope, I just shut it down.

Uhh, I have to go to school.

Mars Ultor

Hmm

No spare computer?

zyabin101

Nope.

Katenkyo

@zyabin101 no spare server?

zyabin101

@Katenkyo nope

Katenkyo

@zyabin101 maybe you could afford something like that it should be enough to run a chat bot :D

Mars Ultor

9:22 AM

Only 1PB ram and 3 million cores? psshh

Katenkyo

@MarsUltor it's 1024 TB RAM :D

Anonymous

I'd hate to see the price tag for one of those suckers

Katenkyo

@Mego I think the price for one of it's processor ( a 12 core) should be something like 1500-2000$... even only with processor, it becomes enormous

Mars Ultor

My guess is each Xeon processor is around 500

(as a generous guess) That means $130m just for the processors.

Katenkyo

I found a page where cpu are compared with equivalents -> cpu-world.com/CPUs/Xeon/Intel-Xeon%20E5-2692%20v2.html

(scroll down)

Would expect it to be around $1500 ^^

Anonymous

9:35 AM

So what I'm getting out of this is that it costs a small nation's GDP to build one, and then another's to run it monthly

Katenkyo

@Mego Yeah, some billions for a supercomputer... Wow

Optimizer

the*

Katenkyo

maybe we could use this to test the golfscript/CJam etc answedr that are supposed to run until the dawn of our solar system

Mars Ultor

@Katenkyo -4.6 billion years? That would be handy.

Katenkyo

@MarsUltor never mix up your words, never... -_-

zyabin101

10:48 AM

1 year later...

We're in 2017. Oops.

LegionMammal978

Mathematica:

Count[Normal@SeriesData[x,0,Reverse@RealDigits[EulerGamma,10,#][[1]],0,#,1]~NRoots~x,_Real,{1,2}]&

Lembik

any mathematica user want to post an answer to codegolf.stackexchange.com/questions/77051/… ? It's one line :)

I sadly don't have mathematica

anyone have Maple here?

LegionMammal978

11:18 AM

@Lembik Looking at it now; trying to find the correct vector.

Solver

Why is no one here?

Mars Ultor

The Americans are mostly asleep

orlp

ATTENTION PYTHONISTAS

Python 3.6 is now interesting for golfing!

Because of s="strings"; f"Format {s}!"

Sp3000

2

A: Tips for golfing in Python

Use f-strings Python 3.6 introduces a new string literal that is vastly more byte-efficient at variable interpolation than using % or .format() in non-trivial cases. For example, you can write: l='Python';b=40;print(f'{l}, {b} bytes') instead of l='Python';b=43;print('%s, %d bytes'%(l,b))

Having said that, silly Windows won't let me compile it yet :/

orlp

@Sp3000 should be no problem with msys2

Sp3000

11:27 AM

Hmm will check it out, thanks

Sherlock9

11:52 AM

I will get 3.6 when it's out for full release and some modules have been updated for it, since I am a n00b and I tend to break things to begin with

nhahtdh

To all followers of Zalgo:

in RegEx - Regular Expressions on Stack Overflow Chat, 8 mins ago, by nhahtdh

Black magic here .split("(?=-)(?<=[^-]*-[^-]*-[^-]*)-"). The regex just checks that there are at least 2 dashes before the current dash and split at that dash. The look-ahead is to avoid costly look-behind if the next character is not dash. I have checked the compiled structure and the regex is compiled correctly. However, the code may break in the future when they fix the bug in Java, so I strongly recommend against this method. Just split the string and rejoin them as appropriate. — nhahtdh 1 min ago

cc @MartinBüttner

zyabin101

status-completed

zyabin101

12:39 PM

@MartinBüttner We should have a Retina course, Unary arithmetic in Retina.

Martin Büttner

@zyabin101 I think I'd be up for writing that... I wanted to add a tutorial to the Retina wiki anyway at some point (although that might have to wait until the language is a bit more feature-complete)

Lembik

@LegionMammal978 the vector is all 0s and of length n

trichoplax

How far does the tips scope reach? Would "tips for golfing unary arithmetic" be on topic?

Geobits

Tips for writing tips questions.

Rainbolt

12:57 PM

We found boiled crawfish yesterday for $4/lb and it included potatoes (but not corn). Also I got engaged.

Sherlock9

@QPaysTaxes At least one person speaking directly above me was going to compile it themselves, so definitely not everyone

Martin Büttner

@Rainbolt Congrats on the crawfish!

3

Rainbolt

Thanks

I had three lbs of spicy and it was amazing

Geobits

@Rainbolt Wow, really? Nice!

Eᴀsᴛᴇʀʟʏ Iʀᴋ

morning

Mars Ultor

1:05 PM

@QPaysTaxes IDK, mostly that colloquial English is sometimes weird

Eᴀsᴛᴇʀʟʏ Iʀᴋ

s/colloquial//

Geobits

It's more lazy than weird. Or at least, even non-colloquial English is weird.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

English is weird.

@Geobits ninja'ed.

Rainbolt

English is weird.

Sherlock9

@QPaysTaxes I am rather literal. I say “most"

Eᴀsᴛᴇʀʟʏ Iʀᴋ

1:06 PM

^

Rainbolt

Thinking of my lips as little flaps of skin grossed me out for a moment

Eᴀsᴛᴇʀʟʏ Iʀᴋ

much ^

Sherlock9

And we set standard meanings on some sounds, other people throw other meanings at them. Other languages, other dialects, colloquialisms, etc

Geobits

@QPaysTaxes No weirder than moving tubes of skin to manipulate machines to communicate for you.

trichoplax

Spotted my obvious mistake

Ignore me...

Geobits

1:08 PM

@QPaysTaxes I know. I am :P

Sherlock9

I love puns, though, and playing around with languages makes you a good programmer and a good golfer

Mars Ultor

English is a lot weirder (well, has more Exceptions) than almost all languages

LegionMammal978

@Lembik However, Mathematica's definition doesn't take the negation of the transpose of the vector.

Also, apparently, the matrix must have an imaginary part.

Sherlock9

Trying to call crush.date() and getting SlapInterrupt due to poorly formatted inputs

Geobits

@QPaysTaxes like parent or similar?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

1:10 PM

@Rainbolt congrats on the potatos.

Rainbolt

Thanks

Mars Ultor

@QPaysTaxes Usually parent is used for the enclosing scope, child is used for enclosed scopes

Hmm

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Sherlock9 um

Mars Ultor

But isn't the only other free symbol _?

Geobits

Something up-related? ^ maybe

Mars Ultor

1:12 PM

JS console has $x, $0, $_, $$. Maybe $p and $c?

so then ^ and v?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

|

Geobits

Just go with mom or dad :D

Lembik

@LegionMammal978 you need i P/pi for the matrix

Geobits

Is this a golfing, eso, or general-purpose language?

Mars Ultor

But won't ^ be used for xor or power?

Lembik

1:14 PM

@LegionMammal978 mathematica.stackexchange.com/questions/111904/…

Mars Ultor

@Geobits s/so/soteric/

Geobits

If it doesn't need to be golfy, why not go with something clear?

2

@MarsUltor s/soteric/so/

Mars Ultor

maybe reserve $ for system names?

$p/$c

Lembik

hi @TonHospel

Mars Ultor

or $^ and $v

Geobits

1:15 PM

Nothing really matches $ though. Not a single character anyway.

Mars Ultor

oh

Ton Hospel

@Lembik: Hi

Geobits

Go Unicode. Then you can use other currency symbols. ‎£ is a good one for parent >_>

Mars Ultor

and ¢ for child

Lembik

@TonHospel how things?

Geobits

1:18 PM

@QPaysTaxes I know. I just mean you can make all scope-symbols currencies. Choose your favorites ;)

Mars Ultor

@QPaysTaxes But that's British currency

Ton Hospel

@Lembik: Trying to improve the error estimate

Mars Ultor

@Geobits parent = USD, child = ???

Lembik

@TonHospel ooh.. that sounds exciting

orlp

I have to say

PPCG makes me feel 👌

Geobits

1:19 PM

boxy?

Lembik

@TonHospel I found a paper which is too complicated for me to understand. But if your math is strong maybe you can grok it?arxiv.org/pdf/1005.2632v1.pdf

the math is beyond me :)

orlp

@Geobits install a proper font

Ton Hospel

@Lembik: Frustrating. There are matrices where the current bound stops too soon (though your generator doesn't seem to generate them)

Lembik

but it might solve exactly my challenge

Geobits

@orlp Use a proper symbol :P

orlp

1:20 PM

@Lembik what are you working on this time?

Lembik

@orlp codegolf.stackexchange.com/questions/77051/…

@orlp still matrices :)

orlp

@Lembik as always?

Lembik

@orlp true.. arguably these are a little bit different

orlp

@Lembik oh wait this is still the same problem

@QPaysTaxes 👌

Lembik

@orlp oh ok.. I wasn't sure how far back we were going

Sherlock9

1:21 PM

@EᴀsᴛᴇʀʟʏIʀᴋ :D

Lembik

@orlp there is some literature on this topic it seems but I can't understand it as my math is too weak

Ton Hospel

@Lembik: That does not seem applicable. It has i in the exponent, so it's the oscilating part of the exponential

Lembik

@TonHospel but ... when we use the SeigelTheta function in mathematica for example, we just pass i P / pi . As in mathematica.stackexchange.com/users/2305/martin-b%C3%BCttner

@TonHospel so the sum becomes real

orlp

@Sp3000 actually, MSYS2 is not supported by Python

but I had no problems compiling with VS2015

Lembik

@orlp how is your math?

Ton Hospel

1:24 PM

@lembik: You can't do that for the formulas in the paper since it says the polynomial has integer coefficients, so no place to smuggle back a i

Lembik

@TonHospel sorry.. mathematica.stackexchange.com/questions/111904/…

@TonHospel ah!

orlp

@Lembik I dno?

discrete? :P

Ton Hospel

@Lembik: The proper relevant paper is arxiv.org/abs/nlin/0206009

@Lembik: I was implementing their error estimate, but it's way too conservative

Though they have a good way to remain in the ellipsoid instead of using a box like I do now which I'll definitely implement. It will likely completely compensate for their pessimistic error bound

(as far as I know all implementations in these math packages are based on this paper)

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