The Nineteenth Byte

Dennis

12:00 AM

@HyperNeutrino Feel free to flag these for deletion. The roomba ignores questions with a positive score.

Zachary T

@Uriel WTF?

"The roomba", lol.

ATaco

@Uriel "In (Obscure Implementation with complete documentation) how do I use (Implementation specific library function which does not at all follow Lua standards)?"

HyperNeutrino

@Dennis Oh okay. Thanks.

ATaco

If you think I'm joking, "Command+DELETE no longer working on Hammerspoon once the app focus switches to another"

Dennis

@ZacharyT meta.stackexchange.com/search?q=roomba&pagesize=50

ATaco

12:03 AM

"How can I add a 2nd NamePipe?" "Is Torch7 defined-by-run like Pytorch?" "Temporal CNN to classify sounds: cur_target assertion" "How to open a directory in Hammerspoon?"

Uriel

@ATaco "I've almost all of the code, downloaded package X, imported package Y, installed package Z, and want to use feature W to calculate the factorial of a number. How do I do it?"

Zachary T

Wait ... it's seriously called that?

ATaco

Which is all generally disappointing, because Lua is an excellent and powerful language in the right hands.

Zachary T

in the right hands

ATaco

It's my favourite language for rapid prototyping code.

I am definitely not the right hands

Zachary T

12:07 AM

Hey, does anyone here program D?

ATaco

That doesn't look very golfable.

Zachary T

(I don't use D for golfing, of course)

gcc.gnu.org/ml/gcc/2017-06/msg00111.html

Uriel

Does anybody here program Malbolge?

ATaco

Malbolge is a fine language, I think it might even be turing complete!

Zachary T

Anyone here program(ed) Dartmouth BASIC?

Uriel

12:10 AM

55 mins ago, by Uriel

50 rep for bubblegum answer

Zachary T

@Dennis Got to love it when people contradict themselves.

Uriel

22 hours ago, by Dennis

Don't: Avoid using the term avoid in Don't sections.

ATaco

Don't: Avoid saying what one shouldn't do.

Uriel

>>> int('01001110110001011',2)
40331

Leaky Nun

@DestructibleLemon I told you to include a worked out example

Destructible Lemon

12:25 AM

o

ATaco

CMC: Given a list of numbers, output the product minus the sum.

I'm pretty sure Jelly can do this in 3 bytes.

Leaky Nun

@ATaco P_S

@ATaco in ascii

Destructible Lemon

@ATaco how can I get EOF?

Zachary T

APL, ×/-+/

ATaco

@DestructibleLemon Not part of the challenge, take it however is logical.

Uriel

12:37 AM

@ZacharyT ninja'd

Leaky Nun

2 days ago, by HyperNeutrino

2 hours ago, by Erik the Outgolfer

please, "ninja'd" should be restricted to when you actually post the message a split second later than somebody else posting the same message, and then you are the one who is ninja'd

Destructible Lemon

I'm not sure what is logical... I guess the length of the stack on TOS

Zachary T

He did, he just removed the message.

ATaco

@DestructibleLemon How would you normally format a list of numbers?

Destructible Lemon

I was thinking of using sad-flak

New Main Posts

12:38 AM

1

Q: Parse a list of lists into a Sad-List

In this challenge, you must parse a list of lists, into a simpler list format. This challenge is based on my sadflak parser. In my sadflak parser, it has all the () removed, replaced with the sum of the ()s at the start of the list, to make the program run faster. To parse into a Sad-List, you ...

Zachary T

Jelly, P-S.

Uriel

@ZacharyT I can do it in 4. good night :)

Zachary T

o_o, HOW?

ATaco

@ZacharyT This doesn't seem to work.

HyperNeutrino

3 mins ago, by Leaky Nun

@ATaco P_S

ninja'd, and yours wasn't correct. Sorry :P

ATaco

12:40 AM

I know that works.

HyperNeutrino

- is reserved for use in a literal negative number.

Zachary T

Crap, I meant _! I always seem to forget that.

HyperNeutrino

in that case, ninja'd :P

it's so that you can do -1 in one byte

Zachary T

I know that, but why - for literal and _ for subtraction?

HyperNeutrino

Because otherwise weird things would happen if you try to have both as the same character.

Zachary T

12:43 AM

And not `-` for subtraction and `_` for literal?
Or was it just some random design choice?

HyperNeutrino

Why did we choose × to mean multiplcation and not !?

New Main Posts

1

Q: Draw an ASCII contour plot

Consider the following 3x3 blocks which the marching squares algorithm would identify for every cell (with 0-based labeled ID): 0: ... ... ... 1: ... ... \.. 2: ... ... ../ 3: ... --- ... 4: ..\ ... ... 5: /.. ... ../ 6: .|. .|. .|. 7: /.. ... ... 8: /.. ... ... 9: .|. .|. .|. 10: ..\ ...

code-golf ascii-art

Dennis

@ZacharyT I wanted to keep some consistency between code and I/O. Since I/O using Python syntax and thus - for negation, I kept it the same way in the code.

→ 6 messages moved to Trash because, apparently, I don't have anything better to do.

9

HyperNeutrino

1:02 AM

well, second time I got trashed, probably should stop. sorry @Dennis

ATaco

It's possible to kill a Coroutine in lua from outside it, this will come in handy

"Lua has no class"

LegionMammal978

1:18 AM

@Downgoat So to integrate any changes from origin, I just have to do git fetch origin followed by a git merge origin/develop (or whatever branch I'm working on.) Correct?

Riker

1:40 AM

@flawr

whoops sorry feersum

ATaco

1:56 AM

@Riker The "Don't tell me how to live my life" award goes to...

ETHproductions

tfw you click on a starred message posted an hour ago for context, and it's literally 2 messages above what you were already reading

3

LegionMammal978

@Riker That cube illustration on the box either looks convex or concave, switching mentally every 2 seconds or so

HyperNeutrino

@ETHproductions congrats, welcome to my ~~life~~

Downgoat

2:13 AM

@LegionMammal978 :| cannot be unseen

LegionMammal978

You're welcome.

Destructible Lemon

@LegionMammal978 no it is flat

LegionMammal978

@DestructibleLemon Dang it, you just put my perception in an unstable equilibrium

Destructible Lemon

muhahaha

ATaco

Maybe it's a HYPERCUBE but aligned in such a way that it looks like a 3d cube on a 2d plane.

Destructible Lemon

2:18 AM

@ATaco are you interested in a compiler chain project?

ATaco

Usually

Destructible Lemon

ok then

@ATaco what is your github username so I can invite you to my organisation?

HyperNeutrino

Guys I just answered the contour map challenge here; does anyone have any golfing tips or tips on how to make it less of a mess?

ETHproductions

@HyperNeutrino Why do you have k=lambda if you're just using it on one value twice

HyperNeutrino

good point

thanks

but it's invalid anyway right now

because 10 and 5 are different :/

Destructible Lemon

2:24 AM

@StephenS you failed

HyperNeutrino

@DestructibleLemon dat not nice >.<

ETHproductions

don't think that's what it was supposed to look like

   _ _ _
  /_/_/_/\
 /_/_/_/\/\
/_/_/_/\/\/\
\_\_\_\/\/\/
 \_\_\_\/\/
  \_\_\_\/

Stephen S

Yes that

thanks xD

@HyperNeutrino it's true though

HyperNeutrino

lol true

anyway i should go sleep now, got an english final tomorrow morning >.<

Destructible Lemon

@ATaco are you interested in compiler chain or not ;_;

ATaco

2:26 AM

@DestructibleLemon Sorry, was out to lunch

TehFlaminTaco

ETHproductions

Where do you live that it's lunch time? o.o

Destructible Lemon

I thought about using brainfuck but with interactive io at the bottom but I'm not bound to it

@ATaco invite sent

ATaco

@ETHproductions Australia, still.

ETHproductions

Ah right

Destructible Lemon

github.com/Compiler-Chain

ATaco

2:27 AM

Our times are strange, you get used to it

Leaky Nun

@HyperNeutrino I don't understand the need for l=list if you're going to use it just once in the code

Destructible Lemon

ok, @ATaco do you think there is a better lang to have at the bottom level?

Leaky Nun

@HyperNeutrino also, [k:][:3] is shorter than [k:k+3] if k is long

ATaco

@DestructibleLemon I don't even know what this is tbh

Destructible Lemon

so, what you do, is starting from the base language, write a compiler in the latest language, from a new lang, to the latest lang

and do that a bunch of times

ATaco

2:30 AM

That's horrifying, I love it.

Destructible Lemon

so, I was thinking that the only requirements are:

TC, interactive IO

ATaco

So BF is the easiest to write, so we should start there.

Destructible Lemon

new room?

ATaco

Sure

Destructible Lemon

Github Compiler Chain

github.com/Compiler-Chain

New Sandboxed Posts

2:36 AM

0

A: Sandbox for Proposed Challenges

ASCII Rubik's Cube code-golf kolmogorov-complexity ascii-art Inspired by this and the following chat: Your task is to output the following: _ _ _ /_/_/_/\ /_/_/_/\/\ /_/_/_/\/\/\ \_\_\_\/\/\/ \_\_\_\/\/ \_\_\_\/ Extra leading or trailing whitespace is allowed, as long as it is no...

Leaky Nun

2:48 AM

CMC: output the following

2

ATaco

3:04 AM

@LeakyNun Can I output as a stack of stacks?

If so, RProgN2, 19 bytes. 6R«x=05R{x*x+7%}r»r

Phoenix

Apparently my phone doesn't know what a monospace font is and has decided to render code formatting in the default serif font.

ATaco

Nice

Phoenix

Ooh, the desktop version of chat apparently works fine

._.

New Main Posts

3:33 AM

0

Q: Sandbox Visualization Module Emulator

The Zachtronics game TIS-100 contains a graphics display called the visualization module. I could try and explain the specs of this module, but the game's manual will do a better job: (As you may have guessed, the motivation of this problem is to create a code golf challenge in which TIS-100 is...

code-golf graphical-output

Destructible Lemon

wtf re.sub doesn't work if you want to include brackets ffs

wtf it doesn't remove digits what on earth

Anonymous

@DestructibleLemon I'm 90% sure you're doing whatever it is that you're doing wrong

Anonymous

@DestructibleLemon Sure it does

Destructible Lemon

>>> re.sub("[^+-\[\]]","","sadds00012-213-3aaa3")
'00012-213-33'

please explain to me what I did to deserve this?

Anonymous

You should be using raw strings for regexes

Destructible Lemon

3:42 AM

ok then

Dennis

- creates a range.

Destructible Lemon

oh right

goddamnit

Anonymous

So once again, the problem was not with Python

Destructible Lemon

ok

Anonymous

Also there's no reason to escape [ inside of a character class

Destructible Lemon

3:43 AM

also fairly sure raw isn't that significant

@Mego why not

Anonymous

@DestructibleLemon It is. It would be trying to process backslash escapes without it

Anonymous

@DestructibleLemon Because [ isn't a special character inside of a character class

Destructible Lemon

mhmmm. no harm by having it there

Anonymous

Sure, but it's not necessary, which is what I said (in slightly different words)

Destructible Lemon

@Mego what do you mean? it works fine without raw strings*

Anonymous

3:46 AM

@DestructibleLemon That specific example does, but there are plenty of good reasons to use raw strings for regexes. For example, if you wanted to match a word boundary, r'\b' is a lot neater than '\\b'. And goats forbid you try to match a literal backslash escape sequence without raw strings ('\\\\b' is terrible).

Anonymous

It's so terrible that I had to try multiple times to remember how to do an escaped backslash in regex without a raw string

ETHproductions

This reminds me of a certain xkcd

Anonymous

@ETHproductions Yep (was about to link it)

Destructible Lemon

anyway I have to continue my interpreter

Dennis

@LeakyNun Nice one. That might be wortjy of main.

Downgoat

3:54 AM

Question: if the language has to query an external source (which happens to be tracked by git) does that violate loophole?

e.g. a dataset for a certain function

planning on doing like wolfram goat detector but IIRC Mathematica has option to download the stuffs

Anonymous

@Downgoat Potentially, but you could argue that updates from the external source constitute different language versions, given that the external source is version controlled

Anonymous

If it's a function of the language rather than the program, and you can choose which version you get, then I don't think it runs afoul of that loophole

Downgoat

hm, ok, what if I have a server which interacts with VSL and updates responses based on previous requests

Anonymous

@Downgoat Updates responses how?

Downgoat

example is /howManyTimesHasThisEndpointBeenQueried

but actual example might be user submitted data to, lets say, dataset

Anonymous

3:58 AM

I think it would depend on the functionality

Downgoat

e.g. If I were to have a list of lots and lots of prime and VSL can upload new prime to dataset

Wheat Wizard

CMC implement the alt text of this xkcd

Anonymous

If the only thing that would change is the speed of execution (e.g. bypassing the primality test if the server has the result cached), then it should be valid in challenges that aren't fastest-code or have run time restrictions.

Wheat Wizard

(a program that finds the line with the highest ratio of special characters to regular alphanumeric characters in .bash_history)

Downgoat

does whitespace count as special character

Anonymous

3:59 AM

@WheatWizard Define special characters and regular alphanumeric characters

Downgoat

^ what is an irregular alphanumeric character. Is it like an letter w/ accent?

Wheat Wizard

alphanumeric: 1234567890qwertyuiopasdfgjhklmnbvczxQAZWSXEDCRFVTGBYHNUJMIKOLP

Anonymous

@WheatWizard I think you're missing a few

ATaco

Alphanum is [a-zA-Z0-9] special characters is [\x32-\x8F] where not in alphanum.

Wheat Wizard

^ that

Anonymous

4:01 AM

Maybe just have it defined by \w and \W

Downgoat

can we take input as a string of .bashrc contents or do we have to read file?

Anonymous

@ATaco Underscore is often included in alnum (it is in regex, for example)

Wheat Wizard

@Downgoat why would you want the .bashrc?

ETHproductions

@ATaco "[\x32-\x8F]" What?

Downgoat

shit sorry mean .bash_history

Wheat Wizard

4:02 AM

No input, you should read from the file.

ATaco

@ETHproductions Visible Ascii, from space to ~+1

ETHproductions

Did you mean [\x20-\x7F]?

ATaco

Really it should be \x8E, but I like that little box character, I respect it.

Dennis

@Mego \w is word, not alnum.

ATaco

I Infact did mean 7

I'm stopping standing by 32.

Downgoat

4:03 AM

JS ES6: (s,g=x=>x.split(/\w/).length/x.split(/\W/).length) => s.split\n.reduce((p,f)=>g(f)>g(p)?f:p) you can modify regexes based on what you like

ATaco

Because I was thinking dec.

I'm a failure

ETHproductions

You somehow managed to think dec and hex simultaneously there

ATaco

Don't question me I'm fabulous.

Anonymous

@Dennis From Python's re docs: "Matches characters considered alphanumeric in the ASCII character set; this is equivalent to [a-zA-Z0-9_]."

Dennis

That's just wrong. _ is neither alphabetic nor numeric.

> A word is defined as a sequence of Unicode alphanumeric or underscore characters[.]

(same document)

Downgoat

4:08 AM

@ETHproductions If I have a function g, do you know how I can find the element i in array a where g(i) is greatest in JS?

I am doing reduce but not working :|

.reduce((o,n)=>g(o)>g(n)?o:n)

ETHproductions

I think you need a default value

Downgoat

by default reduce use first elem in arary IIRC

ETHproductions

Actually no, it works fine for me

Anonymous

@WheatWizard Python 3, 119 bytes: import re;print(max(open('.bash_history'),key=lambda s:(re.match(r'\W',s)and re.match(r'\W',s).lastindex or 0)/len(s)))

ETHproductions

@Downgoat Can I see more of your code?

Downgoat

4:09 AM

@ETHproductions entire code is (s,g=x=>x.split(/\W/).length/x.split(/\w/).length) => s.split`\n`.reduce((o,n)=>g(o)>g(n)?o:n)

Anonymous

Requires running in ~ because apparently ~/.bash_history doesn't work as a file path for open

Dennis

@LeakyNun 7²R×:¥%t0o⁷ 10 bytes with a trailing or leading newline, 9 bytes with both.

Downgoat

@Mego I dislike python but max(,key=) is like the best thing ever >_<

Anonymous

@Downgoat I dislike JS but... Actually no, I don't have anything to add to that :P

5

ETHproductions

@Downgoat This totally works for me, unless I misunderstand what it's supposed to do

Downgoat

4:11 AM

oh it's suppose to do above challenge

Wheat Wizard

@Mego Nice. This considers _ as alphanumeric?

Downgoat

if I map each item on function g, it gives correct weights

ETHproductions

Can you give an example where the whole function fails though?

Anonymous

@WheatWizard Yep, as per \w

Downgoat

@ETHproductions my test is 123goat\ngoat\n12433\ngoatboat and it outputs goat

ETHproductions

4:12 AM

Well all of those have a ratio of 0

Downgoat

wait what

why does mapping on g output 0.125, 0.2, 0.16666666666666666, 0.1111111111111111 O_o\

oh /1 ok I see

I am idiot

ETHproductions

Add a ~- before each of the x.split's

Downgoat

why subtract one?

New Main Posts

0

Q: That's Radical!

The radical of a positive integer n is the product of the distinct prime factors of n. Your task is to calculate this value. For example, rad(60) = rad(2*2*3*5) = 2*3*5 = 30. Input: A positive integer n, with 2 ≤ n ≤ 1,000,000. Output: rad(n) Test cases: (More test cases than you could ever n...

code-golf number-theory

Wheat Wizard

@Mego Are you sure this works? I have tried it on my computer and its getting the wrong result.

ATaco

4:14 AM

@Mego I used to dislike JS, but now that I've been using it for a-ta.co, I've got Stockholm syndrome.

ETHproductions

@Downgoat Because .split(x).length gives the number of occurences of x plus one

Downgoat

@ATaco ~~aww yiss evil js machine is working~~ huh

Anonymous

@WheatWizard It works for me

Downgoat

@ETHproductions yea that is corect otherwise would be divide by zero and result in major bork

Wheat Wizard

Hm ok, I'm getting a command with only alphanumerics.

ETHproductions

4:15 AM

Well true, but you could just do ||0

lifehacks

Anonymous

Oh wait I'm comparing against the length of the string, rather than computing the nonalnum/alnum ratio

Wheat Wizard

And I know I've run a command with symbols before

Downgoat

@ETHproductions divide by zero result in Infinity which is truthy?

ETHproductions

What's borked about that? It will just give one of the lines that doesn't contain any alphanumeric chars

Downgoat

that means ! and !!!! will both have same score where !!!! should be chosen no?

ETHproductions

4:17 AM

Oh should it?

You should be comparing by score and then by length then

Actually I think your current code accomplishes exactly that... :P

Or maybe it's backwards

Anonymous

Yeah comparing the ratios is much harder because of infinities

Downgoat

(s,g=x=>x.split(/[^a-zA-Z0-9]/).length/x.split(/[a-zA-Z0-9]/).length) => s.split`\n`.reduce((o,n)=>g(o)>g(n)?o:n) works :D

regex can probably be golfed

tested on 123goat\ngoat\n12433\ngoatboat and outputs 12433

ETHproductions

/[\W_]/, /[^\W_]/

@Downgoat wait what? that's not the longest, or the shortest, or the first, or the last

Downgoat

@ETHproductions huh [\W_\d] is still shorter than [a-zA-Z]

ETHproductions

@Downgoat Add a ~- before the first x.split and everything should be good

Anonymous

4:21 AM

@Downgoat I wrote a Python-like max function for you

Anonymous

I really don't want to try to golf it

ETHproductions

That is the cleanest, most thorough code I have seen written by a PPCGer in a long time, even takes care to handle undefined (mentioning it by name for that matter). Bravo to you sir

Anonymous

@ETHproductions Heh, I am actually very capable of writing clean code, and I'm sure many people here are similarly capable. We just usually don't see each other's clean code.

Downgoat

Golfed: const max=[]::reduce((a,b)=>g(b)>g(a)?b:a)

ETHproductions

Right, I can too, but I usually don't... PPCG has somewhat taught me to just get working code and not take the time to think out every edge case. Good thing I'm studying CS at college in the fall

Anonymous

4:25 AM

@Downgoat Our solutions were nearly identical: (i,k=x=>x)=>i.reduce((o,n)=>k(o)>k(n)?o:n)

Downgoat

wait nvm won't work with bind

ETHproductions

@Downgoat Some people just want to see the world babel :P

Downgoat

@ETHproductions no is actually stage-2 ES7

I think

ETHproductions

Oh it is now? It wasn't when I checked a couple days ago

GOSH Darn it apostrophe, why do you have to be right next to the enter button

@Downgoat Nope, still at stage 0

Downgoat

citation-needed

ETHproductions

4:28 AM

github.com/tc39/proposals/blob/master/stage-0-proposals.md

Downgoat

would be very surprise if at stage 0

ETHproductions

See "function bind syntax"

Downgoat

wtf

ETHproductions

yep

Downgoat

github.com/erights/Orthogonal-Classes O_o

:O idea: us PPCG JSers should make TC proposal with awesome golf feature

O_o how is null propogation further than bind

:O there is bigint porpoisal

ETHproductions

4:35 AM

because this is tough

null is not

Downgoat

nvm only babylon :(

ETHproductions

I see someone hasn't checked the proposals repo in a while

The one thing that's finalized for ES2018 so far is lifting template literal restriction (TL;DR: allow things like \unicode and \xerxes in template literals)

ATaco

5:11 AM

WP gives some of the best advice on SE imo

Downgoat

6:11 AM

@ATaco WP as in WordPress?

ATaco

@Downgoat WP as in Workplace

feersum

6:35 AM

The ancient Chinese had a curse, "May you have highly voted Workplace.SE questions."

8

Mendeleev

7:03 AM

can you guys help me write rc4

Stewie Griffin

8:55 AM

The C-submission works on one row at a time. If it gives the same result for all 4 rotations, is it safe to assume that the solution is unique? @isaacg

Maybe flip it horizontally/vertically too...

feersum

@StewieGriffin Why is the grid so small?

Ah I see many people have already asked that.

Stewie Griffin

@feersum Because I borrowed it from the app, and I have no idea how to make new test cases that are both unique and non-trivial.

feersum

One would expect a grid suitable for casual human solving to be too easy for computers.

Stewie Griffin

I'm quite sure I can't do it manually, and the only program I'm comfortable making something like that in is MATLAB. I only have Octave installed on this computer and I'm quite sure it's not fast enough to (and/or I'm not skilled enough) to make bulletproof large test-cases using only Octave. :(

@feersum agreed... I changed it from code-golf to fastest-code when there were two submissions, whereas one couldn't solve 11-by-11 in less than a minute (and a requirement in the original post was 12-by-12 in less than a minute), and the other one used more than one second. I know Javascript isn't exactly made for speed, but still, I figured it was a bit harder than I had anticipated and decided to change it...

feersum

9:11 AM

Why would you expect code golf answers to be fast?

Stewie Griffin

I wouldn't... But I would expect them to be able to solve the test cases... And two different users said the test cases were too large for their approaches... (One comment is removed now, I'm not sure whose it was).

In hindsight I should have seen that the test cases were too small. I still think fastest-code is better than code-golf for this challenge... It just suck that I'm (likely) not able to make large enough test cases...

Cops and robbers coming up: Cops: Make a board in less than a minute with a unique solution of size n-by-n (as large as you can) that will take robbers more than 1 minute to solve. Robbers: Solve it in less than a minute..

feersum

You should be able to create test cases by using existing solvers.

E.g. generate some random areas. Randomly add trees until the grid becomes unsolvable.

Then undo the last operation.

Then check if there is a unique solution.

Stewie Griffin

I'm looking into it now,,, the unfortunate thing is: I don't know any C or Clingo... I'm not even sure how to install and run it properly :P

I'm not a programmer... Not even close... I just enjoy playing around with MATLAB once in a while, since that's what I used when I wrote my Master's...

feersum

9:27 AM

I guess you could make the test cases by hand if you really had to...

Stewie Griffin

How large do you think they must be...?

I probably won't be able to finish it today unfortunately... My daughter will wake up in a little while, and I'm afraid I have to spend time with her, and not here... :)

New Main Posts

9:52 AM

1

Q: Block of digits

Output/print this block of text: 1234567890 2468013579 3691470258 4815926037 5049382716 6172839405 7306295184 8520741963 9753108642 0987654321 Acceptable formats include: Trailing newlines/whitespace List of strings List of lists of characters List of lists of integers However, list of int...

code-golf math kolmogorov-complexity

New Main Posts

10:06 AM

0

Q: Never Gonna Give You Up

This one is fairly simple; your task is simply to play the audio from Rick Astley's Never Gonna Give You Up. It should ideally run on Ubuntu 16.04 for ease of testing, but if not, specify the OS on which it runs. Rules Default Loopholes apply. Scoring This is code-golf, the shortest valid ...

audio

Mayube

10:23 AM

Morning chaps

almost noon actually

but still

o/

Leaky Nun

@MartinEnder do you think you can golf this answer?

Destructible Lemon

I think I have finished my bf interpreter!

wait nevermind :P it is still buggèd

Mayube

rip

Destructible Lemon

I think I have gotten rid of the bugs?

if that is possible

Mayube

10:40 AM

I believe that exact sentence is a programmer's summoning incantation to summon bugs

Destructible Lemon

ehhh

also anyone want to join the compiiler chain project* now?

my hands are not good at typing things sometimes

Mayube

compiler chain project?

Destructible Lemon

so, you make a compiler for a (new) language to the language the compiler is written in

then someone does the same for the language that was just made

and so on

lang0 is InterBF, bf but with interactive IO

@Mayube are you interested?

also my in chat rep number is interesting again

starts and ends with 4s, and the the middle is 9 and 6, which are rotations

Martin Ender

11:09 AM

@LeakyNun didn't really look at yours but here's 59 bytes: tio.run/##K0otycxL/…

Leaky Nun

@MartinEnder wow...

wait, when did $#1$* become a thing?

Martin Ender

it always was, I think

the left-hand operand of $* can be any token

Leaky Nun

alright

Adám

@MartinEnder Why does Retina use .NET regex. Isn't PCRE more powerful?

Martin Ender

I'll fight you

Leaky Nun

11:11 AM

@MartinEnder maybe you should post it as an answer

Mayube

o shit

things heating up in the regex fandom

Leaky Nun

anyway, see you everyone

Adám

@MartinEnder I've been considering making a mini language which is just an interface to ⎕R

Martin Ender

@Adám seriously though, it's a bit hard to compare. PCRE has recursion whereas .NET has balancing groups. I think balancing groups are more versatile, but I'm not sure about their actual respective compatibility classes

I've been considering optionally supporting PCRE in Retina as well, because recursion can often save bytes, but I haven't gotten around to it yet. and the longterm goal is for Retina to get its own regex flavour anyway

Mayube

with balancing groups and recursion?

Martin Ender

11:14 AM

with all the things, hopefully

I have an idea to generalise backreferences and recursion/subroutines into a single concept that's a bit more flexible. but really, writing my own regex flavour is way down the line.

Mayube

implement all the things

Adám

@MartinEnder Can you give me a simple example of balancing groups? I have no idea what they are (despite Dyalog supporting both PCRE and .NET regex).

Martin Ender

@Adám stackoverflow.com/a/17004406/1633117 basically, capturing groups in .NET are stacks, which gives you a different way to match balanced strings. but they can also be used for all kinds of arithmetic.

Adám

@MartinEnder thanks.

Martin Ender

@LeakyNun done

btw, I don't really understand how yours works

Alex K Chen

11:23 AM

Is there a way in excel to get the value of a cell ?

Destructible Lemon

@AlexKChen yup

Alex K Chen

I mean, I am making a rearranagment inequality simulator in excel, so at [i][j] it should be s[i]*t[j], and doing that I need a formula which would tell the value of cell the formula itself is in.

Destructible Lemon

?

Github Compiler Chain

github.com/Compiler-Chain

@Mayube ^ if you are interested

Alex K Chen

  5 	6 	7 	8	 9 10
2 5*2	6*2   ...

1 5*1   6*4  ...

4 5*4

5

6

For doing something like this ^ in excel, and I just enter [5,6,7,8,9,10] and [2,1,4,5,6] and it calculates the product.

Adám

11:48 AM

@MartinEnder OK, I'm finishing up the new language. Probably pretty similar to Retina, but using PCRE. It does have ability to use any APL function to modify the matches, though.

Mayube

@Adám will it be called RetinAPL? :D

Adám

@Mayube No. Why is Retina called Retina?

Mayube

No clue

Adám

@Mayube It is called QuadR

Uriel

@Adám I always thought it was named after retinas, like retinal scan - matching/ comparing stuff

Mayube

11:52 AM

@Dennis this is about as bad as starting off a Don't with "forget to..."

Martin Ender

@DigitalTrauma I was trying to come up with a nice word that would work as an acronym, but failed. The word "retina" was quite close to some of the attempts, and I liked the word. I never managed to retcon it into an acronym though and have since given up on that. So yeah the "re" is sort of for "regular expressions" and maybe the "n" for ".NET", but ultimately it's just a word that sounded nice. — Martin Ender ♦ Feb 9 '16 at 21:41

(cc @Uriel)

Mayube

fair nuff

New Main Posts

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Q: ASCII art for torrent UI

Problem Recreate the UI from a torrent program Given no input, output the following: +----------+----------+----------+ |a.exe |##########|seeding | +----------+----------+----------+ |b.exe 10% |# |leeching | +----------+----------+----------+ |c.exe |##########|seeding |...

code-golf ascii-art

Adám

@MartinEnder RegularExpressionsTerselyIn.NetApparatus

4

LegionMammal978

12:53 PM

@Downgoat plz accept pr

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Q: ASCII Rubik's Cube

Inspired by this and the following chat: Your task is to output the following: _ _ _ /_/_/_/\ /_/_/_/\/\ /_/_/_/\/\/\ \_\_\_\/\/\/ \_\_\_\/\/ \_\_\_\/ Extra leading or trailing whitespace is allowed, as long as it does not change the appearance of the cube. As usual, returning the ...

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Github Compiler Chain

Github Compiler Chain

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