The Nineteenth Byte

flawr

8:01 AM

deepart.io/#

Katenkyo

@flawr Looks like it could made up for a good pop-con !

Lembik

despite the lack of documentation, at some point we should give an award to Ton Hospel's answer to my challenge

Katenkyo

@Lembik which one?

Lembik

it is the fastest implementation in the world, by a long way, of a special case of the Riemann Theta function

8

A: Approximating a special case of the Riemann Theta function

C++ No more naive approach. Only evaluate inside the ellipsoid. Uses the armadillo, ntl and gsl libraries. Install using apt-get install libarmadillo-dev libntl-dev libgsl-dev Compile the program using something like: g++ -Wall -std=c++11 -O3 -fomit-frame-pointer -march=native -s infinity.c...

Katenkyo

@Lembik fastest in the world?

are you sure of that? ^^

Lembik

8:05 AM

@Katenkyo yep.. I can prove it to you too :)

Anonymous

@Lembik citation-needed

Lembik

try the mathematica solution first if you have it

flawr

@Lembik It is only one of two answers. Which are - in my opinion - not very representative.

Katenkyo

@Lembik I don't , and I'm on my work computer, so I'll trust you on this :)

Lembik

@flawr no sorry.. I mean that commercial products have implementations of the Riemann Theta function

and then try github.com/abelfunctions/abelfunctions/issues/121

then try the Maple implementation

then realise how amazing his code is

so yes.. the fastest in the world :)

Katenkyo

8:08 AM

I will if I remember to next time I'll be home ^^.

flawr

Why would anyone design it for speed?

Lembik

@Katenkyo great.. for mathematica you can just copy and paste this code mathematica.stackexchange.com/questions/111904/…

@flawr why would anyone design "int"?

Katenkyo

@Lembik why would anyone design?

Lembik

I am confused.. which challenge is this about?

Katenkyo

@flawr complicated algoythm require to be optimised if you want to be able to use them in a prod' environment

flawr

8:11 AM

Sure, but as far as I'm aware this function is only interesting in the theoretical context.

Lembik

well the Riemann Theta is practically unusable in the existing implementations as you can not input a matrix larger than 9 by 9

@flawr it is very useful to have an implementation

@flawr partly because lots of theory questions remain unanswered

Katenkyo

I'm not really versed in the mathematical world, so can't speak about this function

flawr

Compare to dirichlet L functions. Nobody is interested evaluating those numerically.

Lembik

I can speak about the version in my challenge

Katenkyo

But having faster algorythm will always be proven useful at some point

Lembik

8:13 AM

for example, I would like to know what the average value of the function is for random matrix M

there is no theory for that that I am aware of

but I can compute it numerically

Mars Ultor

Finally

Lembik

got to go

until later

Mars Ultor

@Mego ^^ very hacky userscript

Katenkyo

@MarsUltor doz it kno how to juic avocad?

Mars Ultor

@Katenkyo No

@Katenkyo because I don't know yet

@Katenkyo I can add it though

Katenkyo

8:18 AM

@MarsUltor also, what is it supposed to do?

Mars Ultor

@Katenkyo Disables editing chat messages

Anonymous

s/edit/eleven in the message edit options

Katenkyo

ಠ_ಠ

Mars Ultor

@Mego D: I had to replace Event.prototype.stopPropagation with a no-op, it's probably a really bad idea

New Sandboxed Posts

8:45 AM

0

A: Sandbox for Proposed Challenges

Subsequence Substitution code-golfstringsubsequence Most languages come with a built-in to search a string for all occurrences of a given substring and replace those with another. I don't know of any language that generalises this concept to (not necessarily contiguous) subsequences. So that's ...

zyabin101

9:48 AM

chat ees ded

no big surprise

Optimizer

1 zombie apocalypse later...

Katenkyo

What would be the best place to stay in case of zombie apocalypse?

I guess if you can find a bunker with a way to produce vegetables, it would be the best

Sherlock9

10:33 AM

Gentlemen, I'd like your advice

I have an idea to create a general programming language where the main goal is ease of use and where efficiency is somewhere else on the priority list

The trouble is that I have no idea where to start

Mars Ultor

@Sherlock9 Like Pytek?

Sherlock9

Oh yeah

To be honest, I haven't kept up with Pytek developments

How's it going?

Mars Ultor

@Sherlock9 El'endia hasn't shown the source

But he's finished stage 1 (parsing), doing stage 2 (converting nodes to actual objects (numbers/strings etc)), hasn't started stage 3 (execution)

but basic execution is done IIRC

Sherlock9

What's the main paradigm? Imperative? Procedural? Functional?

Mars Ultor

@Sherlock9 Functional, I think

Wait

IDK

Ask El'endia. I'm not sure it's geared towards any one paradigm though

It's gonna be something like python, so it'll support all of those plus OOP and reflection

Sherlock9

11:00 AM

Ah, alright. Thanks

Katenkyo

11:32 AM

@Sherlock9 you may also want to check WinDev

Close to human language, and almost everything is done by the compiler

for instance, in WebDev (their web version of WinDev) Ajax, LDAP connection etc are only 1/2 functions to call

Bad-point : not free

zyabin101

@Katenkyo But there's a free Express version that allows you to try the language without a time limit.

Mars Ultor

@Katenkyo EnglishScript >> Windev

Katenkyo

@MarsUltor Never tested EnglishScript, so can't tell about it

@zyabin101 yeah, but was speaking in case someone may want to actually use it

Mars Ultor

EnglishScript doesn't to that much, though

Sherlock9

12:01 PM

WinDev is going to take a while to download, so I'll hold off on it for now

@Katenkyo Thanks for the recommendation though o7

Nathan Merrill

why do you need WinDev?

LegionMammal978

12:14 PM

Mathematica:

Min[Length/@Select[Flatten[Permutations/@IntegerPartitions@Length[a=#],1],AllTrue[FromDigits/@a~Internal`PartitionRagged~#,PrimeQ]&]]/.∞->0&

Pyth:

lhf.AmP_sdTa./zY

Katenkyo

still beats Java

And the java golfer goes still beats unary

Mars Ultor

@Katenkyo But not binary Pyth

Wait a second, if binary Pyth existed, it would be at most the same length as Pyth

Maltysen

@MarsUltor no because Pyth is ascii only and only uses the first half of each byte

Mars Ultor

@Maltysen first half?

You mean only one byte

Maltysen

@MarsUltor 128 / 256

Mars Ultor

12:21 PM

@Maltysen the first 7 bits

Maltysen

@MarsUltor ok fine, half of the character space

Mars Ultor

so basically binary Pyth would be at most 7/8 the size of Pyth

Maltysen

so all the two char tokens can be one byte

yeah Pyth isnt optimally packing, even with using 7/8 of a byte, so binary Pyth would be a lot better

Katenkyo

I've got a question for english folks

Why do you say omelette du fromage?

Mars Ultor

is pretty sure nobody here is even British

@Katenkyo knowyourmeme.com/memes/omelette-du-fromage

Katenkyo

12:25 PM

@MarsUltor (there may be some australian or an american, you never know)

Mars Ultor

@Katenkyo English != Australian/American

Katenkyo

@MarsUltor English != British, English=set(British, American, Australian)

Mars Ultor

Also, there's almost 100% chance at least one person here is American at any given time

Katenkyo

And thanks, now I know... it's been bothering me for a while

I think it is around 3-5 am in America, so... There's little odds

Mars Ultor

@Katenkyo No, those are English-speaking countries

@Katenkyo Oh wait nvm

Katenkyo

12:28 PM

@MarsUltor Yes, and that's what I meant by English ^^

I could say native English if you prefer

Mars Ultor

But

I'm on for quite a while when the Americans are asleep

trichoplax

@MarsUltor At least some of us are in/from Britain :)

New Main Posts

12:48 PM

0

Q: Display custom error messages, if data type mismatch while reading excel file into database(in C# Program)

I am new to .NET, Hope to get some suggestions on my below scenario: Scenario: I have an external Excel file, which should be read and loaded into the database using C#. So, For that I have created two tables: Staging table (A temporary table which reads the data from excel file before loading...

Maltysen

@El'endiaStarman btw range isn't a generator

so indexing, looping multiple times, etc. works

it is lazy though

Sherlock9

1:03 PM

@NathanMerrill Nah, I just thought of writing a programming language with ease-of-use in mind first and foremost, and these guys were giving me idea of such languages that already exist

Brb, going to go see how many more times Undertale can kick my ass

zyabin101

1:15 PM

kickassapp.com

New Main Posts

1:29 PM

2

Q: The Removal Van

Challenge: You are writing a program for Generic Removal Company, and they have asked you to calculate how many boxes will fit on one of their vans. Your program will take the size of one box as the first argument, and the size of the van as the second argument in a HxWxD format. Rules: The d...

code-golf

zyabin101

2:30 PM

The infinite sum bounty ends in less than 23 hours.

Katenkyo

@zyabin101 I there's already a great enough answer

No one will take the bait of the bounty as they don't think it'll be able to easily beat it

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Chat-mini challenge: output your submission, its byte counter, and source code, etc.

Katenkyo

@CᴏɴᴏʀO'Bʀɪᴇɴ a quine with some more informations?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Yeah.

Specifically, Lang Name, code, NN bytes.

Sherlock9

2:52 PM

@zyabin101 Link?

zyabin101

21

Q: Approximating a special case of the Riemann Theta function

This challenge is to write fast code that can perform a computationally difficult infinite sum. Input An n by n matrix P with integer entries that are smaller than 100 in absolute value. When testing I am happy to provide input to your code in any sensible format your code wants. The default wi...

math fastest-code

Apparently, Ton Hospel is actively storming this thread up the main page.

Dennis

@QPaysTaxes I'm not sure I follow.

Sherlock9

Thanks

zyabin101

By improving his answer.

Katenkyo

His submission is becoming more and more impressing

zyabin101

2:55 PM

@zyabin101 s/23/22/

Katenkyo

@zyabin101 1 hour later...

zyabin101

NOOOOO (Darth Vader voice)!

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Dennis moi aussi, idk what he's talking about

Katenkyo

@CᴏɴᴏʀO'Bʀɪᴇɴ reading some French miced up with English is kinda... strange

My brain froze and didn't know anymore which language it was reading

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Katenkyo c'est vrai. Tu prefererais que je parle en francais?

zyabin101

3:00 PM

@CᴏɴᴏʀO'Bʀɪᴇɴ ?????????

Sherlock9

Do you prefer to speak French? (?)

Katenkyo

@CᴏɴᴏʀO'Bʀɪᴇɴ Hum, pas vraiment, j'en ai marre que les français passe pour des abrutis ne voulons pas faire l'effort de parler une autre langue dans une communauté internationale :p (uh, not really, I'm sick of frenchies not even trying to speak other language when being in an international community, making them looking like dumb/a**hole (whatever you prefer))

French people are usually frowned upon in internet communities, I don't want to make it worst

Dennis

@CᴏɴᴏʀO'Bʀɪᴇɴ You're Australian? o_O

zyabin101

@Dennis moi aussi ==> me too

Solver

sorry @Downgoat I wasn't online then

Dennis

3:07 PM

@zyabin101 Ah, OK. That makes more sense.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

XXD

@Katenkyo haha

Ton Hospel

@lembik: ping

Cᴏɴᴏʀ O'Bʀɪᴇɴ

IM A FRENCHAUSSI

Solver

3:28 PM

// JavaScript source code

var gulp = require("gulp");

gulp.task('default', function () {
    gulp.watch('src/*.es6', function (event) {
        console.log('File ' + event.path + ' was ' + event.type + ', running tasks...');
        gulp.src("./src/*.es6")
            .pipe(gulp.dest("./dest"));
    });
});

@Downgoat ^^^^^^^^^

Cᴏɴᴏʀ O'Bʀɪᴇɴ

gulps that's interesting

Solver

@Downgoat If you ever see this, this is for your grunt

@Downgoat First do npm install gulp

@Downgoat then npm install -g gulp

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@CᴏɴᴏʀO'Bʀɪᴇɴ saw the reng answer come in, promptly upvoted. :P

El'endia Starman

@Maltysen Oh, so you're right. I even tried seeing if it was a subtype.

>>> isinstance(range(10), type(x for x in range(10)))
False

Solver

@Downgoat Then run gulp in the root

@Downgoat so type into the console gulp

@Downgoat This will watch the es6 files. If anything happens to them, they will be copied to the dest

@Downgoat If you don't want the watching, and want to do it manually, then: vvvvvvv

El'endia Starman

3:32 PM

@Solver, you really don't need to ping Downgoat with every message!

Solver

var gulp = require("gulp");

gulp.task('default', function () {
        gulp.src("./src/*.es6")
            .pipe(gulp.dest("./dest"));
});

El'endia Starman

Also, you could've put all those into one big message.

Solver

@El'endiaStarman Okay fine. :P

One more ping, pleez?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Is Level River Street @ThomasKwa?

Solver

Just one?

El'endia Starman

3:33 PM

You would've ticked him off already if he were in here.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@Solver check my profile description

El'endia Starman

@EᴀsᴛᴇʀʟʏIʀᴋ steve erril

Solver

@Downgoat If this helps, ping me to say it works, you will make my day. :) - Also, in case I didn't ention, Gulp is a replacement for grunt

Eᴀsᴛᴇʀʟʏ Iʀᴋ

okai

what did thomas become?

El'endia Starman

ThomasKwa became lirtosiast.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

3:34 PM

lirtotaist IIRC

Solver

@Downgoat ^^^^ Supposed to be mention

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@CᴏɴᴏʀO'Bʀɪᴇɴ _='Python, 48 Bytes:\n_=%r;print _%%_';print _%_

Sorta.

Not the right format though.

brb fixing

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@EᴀsᴛᴇʀʟʏIʀᴋ :D

@EᴀsᴛᴇʀʟʏIʀᴋ kk

noice

Eᴀsᴛᴇʀʟʏ Iʀᴋ

nvm bad

Cᴏɴᴏʀ O'Bʀɪᴇɴ

I can't test it :P

noice

Solver

3:39 PM

nice noise

Eᴀsᴛᴇʀʟʏ Iʀᴋ

_='Python, _=%r;print _%%_, 50 Bytes.';print _%_

Finally.

Solver

@EᴀsᴛᴇʀʟʏIʀᴋ Yes, I have @EᴀsᴛᴇʀʟʏIʀᴋ, @EᴀsᴛᴇʀʟʏIʀᴋ, @EᴀsᴛᴇʀʟʏIʀᴋ

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@CᴏɴᴏʀO'Bʀɪᴇɴ be proud.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

GOOD JOB

Eᴀsᴛᴇʀʟʏ Iʀᴋ

thx

go post a challenge on this

Solver

3:41 PM

well done no idea what you're talking about

Eᴀsᴛᴇʀʟʏ Iʀᴋ

The python code _='Python, _=%r;print _%%_, 50 Bytes.';print _%_ prints out itself, but formatted to go in a answer.

@CᴏɴᴏʀO'Bʀɪᴇɴ this code is better: _='Python, 48 Bytes:\n_=%r;print _%%_';print _%_.

It prints it nicely formatted.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

hm

Eᴀsᴛᴇʀʟʏ Iʀᴋ

Better even:

_='#Python, 49 Bytes\n    _=%r;print _%%_';print _%_

This ones prints exactly what you would put in your answer, with formatting.

@CᴏɴᴏʀO'Bʀɪᴇɴ usage:

>>> _='#Python, 49 Bytes\n    _=%r;print _%%_';print _%_
#Python, 49 Bytes
    _='#Python, 49 Bytes\n    _=%r;print _%%_';print _%_

Cᴏɴᴏʀ O'Bʀɪᴇɴ

kewl

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@CᴏɴᴏʀO'Bʀɪᴇɴ seriously, go post a challenge about that.

i need to answer.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

3:44 PM

Working on it.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

thx

Cᴏɴᴏʀ O'Bʀɪᴇɴ

0

A: Sandbox for Proposed Challenges

Output the score of your program quine code-golf This is a quine, but with some extra baggage: you must output the "ready-to-go" version of the program, which looks like this: Language name, code, NN bytes. For example, if you write your program in EpicQuineLang whose source looks like epicQui...

quartata

@Doorknob .i ti mutce pluja

please tell me I did that right and I didn't just waste three hours of my life

El'endia Starman

@quartata Even if you got it wrong, you have not wasted that time! You successfully found one incorrect way to say whatever you're trying to say! :P

quartata

I think mutce is x_1 is very x_2 but it could also be x_1 is very x_2 with respect to x_3. The dictionary kinda sucks

New Sandboxed Posts

3:51 PM

WHY DOES EVERYONE KEEP TAKING MY TOYS

9

zyabin101

@NewSandboxedPosts inter-user ninja'd

5 mins ago, by Cᴏɴᴏʀ O'Bʀɪᴇɴ

0

A: Sandbox for Proposed Challenges

Output the score of your program quine code-golf This is a quine, but with some extra baggage: you must output the "ready-to-go" version of the program, which looks like this: Language name, code, NN bytes. For example, if you write your program in EpicQuineLang whose source looks like epicQui...

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@AlexA.

epicTCK

done been shortenned codegolf.stackexchange.com/a/77552/47019

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@quartata the translate sucks more.

quartata

@EᴀsᴛᴇʀʟʏIʀᴋ Actually the translator is very good

Eᴀsᴛᴇʀʟʏ Iʀᴋ

3:54 PM

yeah but it doesn't give a simple translation

is good for ~~addicts~~ learners but not people trying to be a doorknob

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@epicTCK golf moar

Eᴀsᴛᴇʀʟʏ Iʀᴋ

^

Also, the code in your answer is wrong.

It is 500 bytes.

quartata

@Solver Um, you know this is the name of the secret mod room right?

epicTCK

s='indexOf';k='lastIndexOf';h="#";t=b=>b[0].map((x,i)=>b.map(x => x[i]));var a=i=>{m=i.split('\n');for(let h of m){m[m[s](h)] = h.split('');}for(let y=0;y<m.length;y++){for(let x=0;x<m[y].length;x++){var k=0;if(m[y][x]==h){break;}if(m[y][s](h)<x&&m[y][k](h)>x){k++;}q=t(m);if(q[y][s](‌h)<x&&m[y][k](h)>x){k++;}if(k != 2){m[y][x]=h;}}}for(let h of m){var v=h.join('').match(/\S/);var e=v? h.join(''):'';m[m[s](h)]=e;}m=m.join('\n');m=m.replace(/#/g, " ");alert(m);};

is 464

quartata

I'm not sure we can have a room named that actually

Eᴀsᴛᴇʀʟʏ Iʀᴋ

3:56 PM

roflmao

Solver

@quartata Is it? Wow!

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@epicTCK well, the code in the answer is longer.

epicTCK

b/c it calls it too

Solver

@quartata That doesn't make anysense though, it's not as golfed as the eighteenth byte.

@Doorknob is @quartata lying to me:chat.stackexchange.com/transcript/message/28956077#28956077

quartata

?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

3:58 PM

` s='indexOf';k='lastIndexOf';h="#";t=b=>b[0].map((x,i)=>b.map(x => x[i]));var a=i=>{m=i.split('\n');for(let h of m){m[m[s](h)] = h.split('');}for(let y=0;y<m.length;y++){for(let x=0;x<m[y].length;x++){var k=0;if(m[y][x]==h){break;}if(m[y][s](h)<x&&m[y][k](h)>x){k++;}q=t(m);if(q[y][s](h)<x&&m[y][k](h)>x){k++;}if(k != 2){m[y][x]=h;}}}for(let h of m){var v=h.join('').match(/\S/);var e=v? h.join(''):'';m[m[s](h)]=e;}m=m.join('\n');m=m.replace(/#/g, " ");alert(m);};a("#C#B#o#\n#d###e#\n # go#\n###");`

epicTCK

a("#C#B#o#\n#d###e#\n # go#\n###"); calls it, should not be included in bytecount

Eᴀsᴛᴇʀʟʏ Iʀᴋ

sowee wrong account brb

Solver

@quartata don't worry i believe you

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@epicTCK well then move that our of that code.

epicTCK

kk

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