The Nineteenth Byte

12:02 AM

0

Wasn't able to find anything in my searches, but please let me know if this or something very similar has been done before. Appreciate any feedback, first post in sandbox. Can I leave yet? I'm bored at work, and want to know how close I am to being able to go home. To represent this, I wish t...

totallyhuman

12:14 AM

CMC: given a string, output only the characters that are valid in brain flak

ETHproductions

@totallyhuman Japt, 12 bytes: o"()[%]\{}<>

(I should really separate regex literals and string literals one of these days...)

ASCII-only

s=>s.replace(/[^()\[\]{}]/g,'')

ETHproductions

Dangit, [] is a valid character class in JS regex. Why, JS, why...

It's useless except for matching nothing ever

ATaco

You don't need to escape the `[

ETHproductions

CMC: is this challenge ready for posting?

The kolmogorov-complexity tag isn't quite right, but we don't have a tag for this type of challenge (yet)

ATaco

12:27 AM

Vim, :%s/[^\[\](){}<>]//g

ETHproductions

05AB1E has a built-in for "()[]{}<>" or similar, so I'm sure it'll be like 4 bytes max

Phoenix

@ATaco What's the % for?

ATaco

I have no idea, but it doesn't seem to like me if I try it without.

Although it does seem to work now..?

Phoenix

._.

ETHproductions

Funny, the weird % in my program is also necessary, the difference being that I know why because I designed the language :P

totallyhuman

12:34 AM

o0

user165474

How would I go about running VB.NET from bash on Linux?

totallyhuman

@ETHproductions is there a lookup table tag?

ATaco

The mono-project has VB.NET compiling support, and it's got linux distributions.

user165474

can I sudo apt-get it?

user165474

or do i have to get it from a repository?

ATaco

12:38 AM

What version of Linux are you running?

user165474

How do I check?

ATaco

You don't know..?

user165474

Well I know I'm running Linux Mint [Rosa] but I don't know the version number.

ATaco

That's the info I needed.

ASCII-only

@HyperNeutrino microsoft.com/net/core#linuxubuntu

user165474

12:39 AM

Yay thanks

user165474

@ATaco oh ok lol

Phoenix

When someone asks you which <any word possibly containing information about your linux distribution> you have, your answer will probably be Mint.

ATaco

I don't think it's got support for mint, but you can try the following.

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
echo "deb download.mono-project.com/repo/ubuntu precise main" | sudo tee /etc/apt/sources.list.d/mono-official.list
sudo apt-get update

ASCII-only

@ATaco mint = modified ubuntu

ATaco

Then this should work fine.

Phoenix

12:40 AM

I has support for Ubuntu therefore it supports Mint in 99.9% of cases.

user165474

I tried that and it gave me a bunch of broken package warnings/errors

ATaco

nice

It might generally be because of your apt-get packages, or it might be because of mono.

user165474

ehh linux mint 17 or 18?

user165474

It was actually libc giving me issues

user165474

well actually libc was giving libmono-microsoft-visualbasic10.0-cil issues

ASCII-only

12:41 AM

@HyperNeutrino rosa is 17.3

ATaco

Uh... Good luck?

user165474

thanks

user165474

thanks :D i'll need it

ASCII-only

@HyperNeutrino the mono one? yeah mint 17 is trusty not precise

user165474

hm?

ATaco

12:43 AM

I only barely know my way around fedora ;-;

ASCII-only

@HyperNeutrino replace precise with trusty in the thing ATaco posted

user165474

After I'm done running the commands, how do I run a vb.net script from bash?

user165474

Oh okay.

ATaco

Next, apparently, you need to run sudo apt-get install mono-complete

user165474

The following packages have unmet dependencies:
 mono-complete : Depends: mono-runtime (= 5.0.0.100-0xamarin4+ubuntu1604b1) but 4.8.0.520-0xamarin3 is to be installed
                 Depends: mono-runtime-sgen (= 5.0.0.100-0xamarin4+ubuntu1604b1) but 4.8.0.520-0xamarin3 is to be installed
                 Depends: mono-utils (= 5.0.0.100-0xamarin4+ubuntu1604b1) but it is not going to be installed
                 Depends: mono-devel (= 5.0.0.100-0xamarin4+ubuntu1604b1) but it is not going to be installed

user165474

12:45 AM

rip

ASCII-only

@HyperNeutrino you need to uninstall the wrong one

user165474

how many of these do i need to uninstall?

Christopher

@WheatWizard I finished my code. Whenever you finish tell me and we both reveal

NO! I had finished the new interpreter and I just lost it

ASCII-only

@HyperNeutrino like all of them

idk how you installed all of them at once though

just uninstall the old mono-complete or something, sudo apt-get autoremove and install the new one

user165474

ehh idk. i tried that and it still said i held broken packages

user165474

12:50 AM

i'm going to manually uninstall all of them

user165474

wait i don't need to

user165474

most of them are just "you should install this" not "you have the wrong one"

ASCII-only

@HyperNeutrino try sudo apt-get update and installing again

also remember to do

echo "deb http://download.mono-project.com/repo/ubuntu trusty main" | sudo tee /etc/apt/sources.list.d/mono-official.list

if you haven't yet

user165474

ok

Christopher

I am so mad

user165474

12:54 AM

dammit everything's just a huge loop of unmet dependencies

Christopher

Pls send help. I lost a large amount of interpreter work and I have ONE builtin I cannot remember

user165474

ehh send a list of all of the builtins you have?

user165474

and i'll try to see if there are any patterns that seem to have gaps

user165474

also, revision control?

Christopher

Nope and nope. All on khanacademy

ASCII-only

12:56 AM

@Christopher pls use jsbin instead

or even better github pages

user165474

pls do not use khanacademy it is not real js

ASCII-only

@HyperNeutrino it is real js but it's terrible js

user165474

Oh really?

Phoenix

That's like saying "It's real Java but it's verbose Java"

It doesn't make sense.

user165474

Well then it must just have a ton of built-ins and prewritten stuff behind it

Phoenix

12:59 AM

Just use node.js and do it locally jeez.

ASCII-only

@Phoenix ...

PhiNotPi

1:28 AM

@HyperNeutrino do you think you'll have time to do a full run tonight?

Christopher

@ASCII-only It is processing

.js

I use it for live editor

much ez

Good for hacking stuff together.

@WheatWizard So it is fixed (the interpreter) and I have an answer ready

Phoenix

Right, but generally a language shouldn't be a hack.

Christopher

@Phoenix It was for a challenge :P

Also it is actually solid.

Try it out!

Riker

1:47 AM

@Christopher who won the duel btw?

you or wheat?

or neither yet

Simply Beautiful Art

1

Q: Slowest terminating program

Inspired by this question, what's the slowest terminating program you can write? Rules: Physical restrictions such as the universe do no apply, but everything has to work out theoretically. Must actually terminate... eventually. Maximum 15 bytes No additional inputs will be given, code runs as...

Jonathan Allan

CMC: shortest code to output -27208

Simply Beautiful Art

Wondering how to measure termination time if computer doesn't terminate within reasonable time, or computer breaks

New Main Posts

1

Q: Slowest terminating program

Inspired by this question, what's the slowest terminating program you can write? Rules: Physical restrictions such as the universe do no apply, but everything has to work out theoretically. Must actually terminate... eventually. Maximum 15 bytes No additional inputs will be given, code runs as...

code-challenge busy-beaver

Christopher

@Riker waiting for him to winish

I am going to bed as I sleep like a human :(

LegionMammal978

1:56 AM

Units!

(need them for a small project of mine)

Simply Beautiful Art

@Riker the second link probably answered my question, while the other two have pretty much no answers under 15 bytes

Jonathan Allan

2:15 AM

25 min and not a single entry to "CMC: shortest code to output -27208"?

user165474

Python 2: print-27208

user165474

lol

Phoenix

@JonathanAllan What's significant about that number?

Destructible Lemon

thing

Jonathan Allan

something.

Destructible Lemon

2:23 AM

but then

(logic)

seriously guys, some of the highest voted answers are boring answers

Phoenix

TBH, I downvoted Dennis' answer there.

Destructible Lemon

Wheat Wizard

I don't know why anyone upvoted it

Destructible Lemon

really guys, why are boring answers so amusing to you?

I was thinking of making a meta post

because people tend to use the "downvoting" argument about loopholes

ATaco

Uncomplicated isn't boring.

Destructible Lemon

2:26 AM

"aw if they do this we'll just downvote them"

@ATaco yup. and this is boring

Wheat Wizard

@DestructibleLemon Don't bother, the people that read the meta posts are not the ones upvoting these.

4

ATaco

That's entirely a matter of your opinion.

Destructible Lemon

also the question makers opinion

user165474

@PhiNotPi About the full run, not tonight, because I just finally got VB.NET set up (because of the one person who had to use that for KoTH >_>). Tomorrow morning, almost certainly.

Destructible Lemon

if your golf is entirely just the language, then its boring

ATaco

2:27 AM

In Unary's case, it is the correct answer.

You don't pick the less golfy answer because it's "more interesting"

PhiNotPi

@HyperNeutrino okay

Destructible Lemon

someone was reprimanded for doing the exact same thing, and had a deleted answer with no votes

@ATaco are experienced users above the law?

ATaco

Neither was forced to delete the answer, it was optional.

user165474

I would gladly VTD them but they have too high a score.

Jonathan Allan

@HyperNeutrino Ah good Python 2, 11. :)

ATaco

2:28 AM

> Although you can

Destructible Lemon

also, just remember the 300 scoring 0 byte answer

@ATaco ok

user165474

yes :c

Destructible Lemon

but that doesn't make it not stupid

and undeserving of a higher score than most posts

ATaco

-.-

I give up.

Destructible Lemon

ok, but seriously: 300 votes purely because they got there with the language first

(on the hello world question)

Nick Clifford

2:32 AM

i mean, that's just how this stuff tends to work? if you get there first, you'll get the votes (at least, more compared to if you get there later)

Destructible Lemon

ok, but remember

0 byte answer

and 0 byte answers were SPECIFICALLY decried by the question itself

I think it is a problem, just like code trolling was a problem, though this is less in magnitude

A user will come to the site and see that people actually like the trivial and boring answers more

Nick Clifford

if you really think it's an issue, feel free to create a meta post, although iirc it has already been addressed

Destructible Lemon

and by addressed you mean they said they would do it?

or said people would do it?

or just used it as a compromise for a standard?

Nick Clifford

by addressed i mean i'm fairly sure that there's already been a meta post about it

not sure what the consensus was

Destructible Lemon

its a worse version of star spam

Riker

2:41 AM

@SimplyBeautifulArt yeah, all related tho

@DestructibleLemon that's actually a preexisting language

Destructible Lemon

doesn't make it not boring

Riker

yea, just pointing that out

Nick Clifford

again, though, like Wheat Wizard pointed out, what are you going to do about it? they're upvotes. people upvote posts if they like the content

i would personally agree that it's kind of boring, but still

Destructible Lemon

I think it is a problem. just like code trolling was a problem

so how about that hit and sunk koth, huh?

kinda confused about how that works

I mostly just wanna know if turns are simultaneous

also ram seems kinda useless

Wheat Wizard

3:14 AM

CMC: Get the default terminal colors.

Destructible Lemon

I made an image

Leaky Nun

Of all of the inputs you could have set the TIO link to, you went with "Allahu Akbar"? For shame. — user00001 5 hours ago

Destructible Lemon

bad meme yo

Jonathan Allan

@LeakyNun the user actually said nothing about terrorists, maybe they are saying "for shame" because they are anti-religious?

Destructible Lemon

also you know, all caps is screaming

Leaky Nun

3:22 AM

@JonathanAllan hmm...

user165474

3:44 AM

Doesn't Allahu Akbar just mean something like "for god's sake"?

New Main Posts

2

Q: Draw the Moon Phase

Challenge Given the phase of the moon, draw it using ASCII art. Your program must handle new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, and waning crescent. Your input will be an integer. 0 -> new moon 1 -> waxing crescent 2 -> first quarter 3 -

code-golf ascii-art

-1

Q: Is it a number?

Given an input, output truthy if it is a valid floating point number, and falsy if it is not. Here are some examples of inputs: Valid 100 -100 10.245 -12.44 .5 -.2 0.3 -0.776 3365883.0000112 5e3 # equal to 5000 -.5245e3 # equal to -524.5 155.0e-3 # equal to 0.155 -5e-1 # eq...

code-golf number

PhiNotPi

@HyperNeutrino what happens if two entries are deadlocked?

How many round will you go before you declare it a tie?

user165474

@PhiNotPi I thought about that as well. I think I'm going for 1000 rounds before declaring a tie, and if it's non-deterministic, I might re-run it until I get a win. If both have deterministic strategies, then I'll just declare it a tie.

user165474

I also regret not making there be multiple rounds of turns in a 1v1 faceoff because that way the bots can actually learn to adapt to the other player's strategy

PhiNotPi

3:59 AM

@HyperNeutrino I just hard-wired that number into my bot as part of a backup strategy, so it might crash if you go further than that.

user165474

Oh okay. That's alright.

user165474

I'll add that into the challenge.

Destructible Lemon

In case you didn't know: hypnotism is not pseudo science

which I think is pretty cool

PhiNotPi

@DestructibleLemon at the same time, the general public perception is 95% incorrect

Destructible Lemon

yeah. but still

@HyperNeutrino one bot "Keeps track frequency of previous moves, assumes opponent will make the most frequent one again, defends against that."

whats up with that?

Leaky Nun

4:07 AM

@HyperNeutrino oh, it means "God is greater"

PhiNotPi

previous moves in different games against the same opponent, vs previous moves in the same game

user165474

Ah okay.

user165474

Yeah I believe PhiNotPi is right.

user165474

If not, too bad for the user anyway, because I delete all stored data before each run.

Destructible Lemon

is that something you are allowed to do?

user165474

4:08 AM

Well not just each run, every single fight.

user165474

@DestructibleLemon you can store data for between turns but not rounds.

Destructible Lemon

hmmm

did not know this was a tactic.

hmm, I should read better

user165474

>_> I should have kept this to only a certain language because now I have weird languages wherefore I have to install the language first (and spend like an hour on it) before testing

user165474

ehh i don't have enough time for all of this

user165474

send help :c

Destructible Lemon

4:11 AM

hmm

If I made a Turtlèd answer I would make a python answer that is an interpreter

I don't get that battleship koth

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Is it a number? Given an input, output truthy if it is a valid floating point number, and falsy if it is not. The format that is used in this challenge is [-][<integer>][.][<integer>][e[-]<integer>], where square brackets specify optional values. At least one group in the first section ("manti...

user165474

I just turned the braingolf answer into python because it was literally just <<?1:0 which is just import sys;print(1-int(sys.argv[2]))

Phoenix

I think that might be shorter if you do input() and not sys.argv[2]

user165474

No, it needs to be sys.argv.

user165474

It's not code-golf btw

Phoenix

4:16 AM

Ah

user165474

Also the 1- shouldn't be there, I'm dumb :c

user165474

No wonder it kept winning...

user165474

Because my controller was bugged previously

user165474

So it was throwing snowballs on the first turn (which shouldn't be possible), and only the duckling could beat it because the duckling dodged the first shot

Phoenix

Which koth is this?

user165474

4:18 AM

snowball fight

Destructible Lemon

also some people seem to think the bots start with snowballs or something

user165474

yeah

PhiNotPi

@DestructibleLemon I did at first

Destructible Lemon

IDK, but they say: throws most of their snowballs, when the way the bot is, it never gets more than 2

that answer is weird because they kind of understand that it has to reload

at the start

user165474

Darn, I'm really confused about the Jelly intermediate values loops

user165474

4:20 AM

Also youtube 1-indexes videos within playlists :C

PhiNotPi

I think my most recent version of my bot always beats duckling and almost always beats aggressor

If not then something doesn't line up.

user165474

I'll try doing a full run tomorrow morning; if I can't get some of the languages downloaded quickly, I might either do a quick port or just not do them for now.

Destructible Lemon

yeah porting them yourself is not a great idea

user165474

yeah cuz i'll probably fail lol

Destructible Lemon

also, y'know, the programs are complex

user165474

4:23 AM

yup :c

Destructible Lemon

hmmm, fair amount of koths recently. too bad I can't really participate

(you could just make it limited to a few)

or just ask people to consider your feelings/include an interpreter

user165474

lol ~~feelings are for the weak~~ good idea

Destructible Lemon

also how about a martian chess derivative for a koth?

user165474

as long as i can run it from cli it works

Destructible Lemon

but with toroidal space or something

except then you'd need square number or something

I did make a koth already but considering I haven't finished my bot yet, maybe its too complicated

user165474

4:27 AM

toroidal chess is weird though and you also need to change the piece setup

Destructible Lemon

yeah

I think toroidal chess maybe not best idea

ok, how about this: non-euclidean space extended a bunch

except you also have the issue of the ending being triggered by anyone

maybe teams?

user165474

..PPPP..
..RKQR..
..NBBN..
..PPPP..
..PPPP..
..NBBN..
..RKQR..
..PPPP..

user165474

for toroidal

Destructible Lemon

yeah this is not chess

martian chess

and I decided against it

now all I have to do is figure out whether I should start on this, and how to code the non-euclidean space

when I say "whether I should", I mean should I release the other koth

Jan Dvorak

CMC: given two pairs of coordinates on a toroidal 8x8 chess board, determine they could represent the starting and ending position of a knight's move.

Nathan Merrill

4:32 AM

isn't that your standard moves mod 8?

Jan Dvorak

Yes.

Nathan Merrill

toroidal is rather easy to represent in code

Destructible Lemon

yeah, I'm not talking about toroidal

Jan Dvorak

Klein bottle or projective is more fun

user165474

s/determine/determine if?

Jan Dvorak

4:35 AM

yes

Destructible Lemon

ee0r.com/tri-chess

Jan Dvorak

You could have hyperbolic chess but you'd have to reinvent the moves

Destructible Lemon

I'm gonna go with something like in the link if I make this

and also if it is massive multiplayer

Jan Dvorak

nah, tri-chess is locally a square grid. Not that interesting.

Destructible Lemon

no, it is three sides of a cube

Jan Dvorak

4:39 AM

that does not disagree with my statement

Destructible Lemon

what do you mean locally

I don't get it

also I think at one point I was working on a one dimensional chess variant

that was fun to play

ASCII-only

easy question for charcoal here if anyone wants to bother learning Charcoal

if you don't want to bother learning then you can get the code from Print(Modulo(InputString(), 2)) and the -dv flag

user165474

@JanDvorak Jelly, 9 bytes: ạ8ạ«Ṣ⁼1,2

ASCII-only

@HyperNeutrino doesn't look like it works for [7, 6] and [6, 4]

user165474

ehh...

user165474

4:51 AM

well then...

user165474

eh i'm too tired to fix it and also apparently abs(8 - 1) = 5.

user165474

I don't understand the code anymore.

user165474

Goodnight o/

Downgoat

5:07 AM

@TuxCopter is it more idomatic to say "C'était presque 11:00" or "Il était presque 11:00"

Wheat Wizard

Does anyone know what the name for this surface is?

Phoenix

waffles

Wheat Wizard

Its not a torus, look at the arrows again

There is a half twist

ASCII-only

Klein bottle?

brb searching

Wheat Wizard

Nope

Its like halfway between a torus and a klein bottle

ASCII-only

5:11 AM

Real projective plane

In mathematics, the real projective plane is an example of a compact non-orientable two-dimensional manifold; in other words, a one-sided surface. It cannot be embedded in standard three-dimensional space without intersecting itself. It has basic applications to geometry, since the common construction of the real projective plane is as the space of lines in R3 passing through the origin. The plane is also often described topologically, in terms of a construction based on the Möbius strip: if one could glue the (single) edge of the Möbius strip to itself in the correct direction, one would obtain...

Wheat Wizard

Oh it is a Klein bottle

Oh yeah that makes sense

duh

@ASCII-only Thanks!

Newly Featured Questions

5:26 AM

6

Q: Find the shortest representation of a number in Modular SNUSP

Background Many esoteric programming languages don't have numbers built in at literals, so you have to calculate them at runtime; and in many of these cases, the number representation can be quite interesting. We've already had a challenge about representing numbers for Underload. This challenge...

code-golf number

Phoenix

5:44 AM

Guys I need help. So, I fucked up setting up a user on bash for windows, so I put su pavel ; exit in root's .bashrc. I forgot to add pavel to sudoers. How to fix, attempting to switch to root puts me back to pavel.

Jan Dvorak

edit .bashrc from outside bash?

Phoenix

IDK how

Jan Dvorak

open in notepad?

Phoenix

I don't even know if ~ is a real directory on my windows filesystem, let alone where it is.

Jan Dvorak

Good thing to research, I guess...

Phoenix

5:49 AM

I've been trying

nvm literally just found it

Jan Dvorak

Nice. Link?

Phoenix

138

Q: Where is the Ubuntu file system root directory in Windows NT subsystem and vice versa?

I have installed Ubuntu subsystem on Windows 10 (after enabling feature in settings), but where is the Ubuntu file system root directory located in the drive?

bash wsl

nvm again

Show hidden files is ticked

nvm again again

it's in one directory up for some godawful reason

sudo: unable to stat /etc/sudoers: Input/output error
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin

fuck

@JanDvorak I think opening it in notepad broke it, in the sense that it has crlf now.

Jan Dvorak

does ... that break Bash?

Phoenix

No, it just breaks sudo.

I tried modifying sudoers

Jan Dvorak

Atom can save with lf or crlf

Phoenix

6:03 AM

Yeah, I'll try in Notepad++, can't figure out Sublime.

This is unironically my favorite thing about linux. Trying to fix stuff like this.

Wheat Wizard

You should try Arch then.

It will break by itself.

Phoenix

Only Ubuntu is available for WSL, and I want to have a useable computer for when I actually need to do work.

feersum

No excuses

Phoenix

Is that a thing Minxomat made?

feersum

Right

Phoenix

6:07 AM

Thanks @mınxomaτ, installing rn

New Meta Posts

6:26 AM

0

Q: Klein Command Line Arguments

I made a language (and its not based on Brain-flak for once!). My language, Klein requires that you specify a topological surface in which the program is embedded. Currently this means passing 3 bytes to the command line to denote one of 8 supported surfaces. Currently we score command line arg...

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Wheat Wizard

@NewMetaPosts Wow that was fast! gj bot

New Main Posts

6:47 AM

-1

Q: uploading to PYPI

I want to upload my python package to PYPI. I create setup.py and init.py files currectly. then did the following steps: python setup.py sdist python setup.py bdist python setup.py register python setup.py sdist upload or by replacing the latter two step with: twine upload dist/* but i...

python

Phoenix

6:59 AM

CMC: Given a string in UTF-8 or 16 (your choice), determine if it would be less bytes in the other encoding.

New Main Posts

0

Q: Selection of two rectangular sections

Backstory The world is looking for a new living planet, where we can find a new generation of life and settle there. A decade ago, they found a planet called HOMESTEAD, which is 1 lakh billion light years away from us. Our scientists had explored that planet from last many years and had sent var...

code-golf algorithm

0

Q: Climb to America

Now that other users have helped Trump build the wall, its time for you to climb it. This is an ascii art challenge where you need to output a climbing wall with randomly placed holds. A climbing wall is made up of panels each of which has between 3 and 10 holds and is 5 panels high. Each panel...

code-golf ascii-art random

SIGSEGV

8:12 AM

Can we define custom script types in HTML?

Phoenix

HTML isn't a scripting language...

SIGSEGV

script DOM objects

<script>

Phoenix

oh

In that case, no idea.

Unless you mean that type attribute.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

The sum of some parts Challenge Given a list of parts and their value, and a target n, return all combinations of parts where the sum of their values equals or exceeds n. Input Input will be like this: [["Part 1", 20], ["Part 2", 15], ["Part 3", 14.75], ["Part 4", 3]], 30 Input consists of...