The Nineteenth Byte

ASCII-only

00:08

yay uni is back

ASCII-only

00:19

probably means i should restart working on charcoal again lol

Downgoat

00:34

>>> a = 'goat' 'sheep'
>>> a
'goatsheep'

u wot python

who thought this would be a good idea

ASCII-only

@Downgoat the people who wrote C

Potato44

@Downgoat That's actually something a lot of langugaes do. I think C and Ruby also do that.

ASCII-only

also it's for nicer multiline strings in certain situations

let foo = 'this\n'
          'is\n'
          'a\n'
          'multiline\n'
          'string'

or something like that

Downgoat

@ASCII-only yeah but that's not a good part of C

take the good parts of existing languages not the bad parts

ASCII-only

@Downgoat hardly any parts of c are good parts

Downgoat

00:42

ಠ_ಠ

the brace part is good part

Potato44

@ASCII-only The best part is function pointer syntax

Anonymous

@Potato44 s/best/worst

Potato44

@Mego That is what i was trying to imply, but sometimes text doesn't convey that.

ASCII-only

@Potato44 chat has markdown. that might help you convey that

Downgoat

akward moment when JS file is bigger than images, CSS, and html combined >_<

Neil

00:48

@ASCII-only hey, do you want me to push my brotli bugfix to your clone?

ASCII-only

> bugfix

yes definitely

also how is it a clone if it wasn't cloned from anything (well, apart from my laptop)

Neil

dunno what else to call it

Leaky Nun

gist.github.com/kckennylau/4bb3ae47d778811efc103392d475a711

Neil

@ASCII-only done

you can let Dennis know so that he can go back to tracking your clone

H.PWiz

01:30

So, Ubuntu is logging me out intermediately after logging in. Nothing I've found has helped me. I'm currently logged in as guest user. Any advice?

ASCII-only

@H.PWiz Happened to me on windows when I installed uxtheme patcher :P

also, this. obviously.

0

A: I am logged out immediately after logging in

I had this problem with 14.04 upgrading from 12.04. I fixed it by Alt+Ctrl+F1 then using sudo useradd <username> -m -s /bin/bash then sudo passwd <username> to give them a password. Restart and login as that new user. Give them admin. role. Copy files from old home admin user directory to new one...

H.PWiz

I looked at that. Also apt search uxtheme gives nothing

ASCII-only

@H.PWiz >_> i guess i should have made it clearer that it's not relevant (uxtheme is a windows-only program)

also gnome? unity? kde?

well, does it work if you switch DE (assuming your Ubuntu can switch DE before login)

H.PWiz

gnome, I think

ASCII-only

also what happens when you try with a virtual console

H.PWiz

01:35

What does that mean

ASCII-only

the commandline way to login

H.PWiz

I can login in a tty

That's from where I'm trying to fix it

ASCII-only

oh then probably something to do with gnome or a startup program, do you have other DEs installed (well, firstly is there a ubuntu logo next to your name on the login screen)

H.PWiz

Yes

ASCII-only

try with another DE, I guess? ubuntu logo -> see if there's anything you can switch to

H.PWiz

01:40

No, sorry, no other DEs.

ASCII-only

oh yeah also have you checked dmesg (hmm, no other DEs? I guess you could install xfce if you want, it's probably the most lightweight one)

H.PWiz

Just did now. A lot came out

ASCII-only

then you should probably scroll/less through if you can to find any relevant messages, i guess

H.PWiz

apparmor="DENIED"?

ASCII-only

maybe. depends what's using (?) apparmor

H.PWiz

01:48

I think I've lost some permissions as well. I can't write/delete files without sudo

xfce didn't help

ASCII-only

hmm, idk then. maybe it's a problem with X? e.g. config or dotfiles

ASCII-only

02:10

@H.PWiz maybe ~/.xsession-errors says something?

H.PWiz

There are a few Unity errors in there

I don't even know what unity is

ASCII-only

it's ubuntu's default desktop environment

H.PWiz

I'm gonna go to bed now, and try to sort something out tomorrow.

MD XF

02:47

Wow Mego really jumping the gun on those edits :P

ASCII-only

wait wat

Anonymous

Magic penguin

MD XF

Clearly

Anonymous

What post is that?

MD XF

Uhh one sec I lost it

34

Q: Angle between the hands on a clock

Given the time in 24 hour format (2359 = 11:59pm) return the angle between the minute and hour hands on a standard clock (on the face plane, so don't just output 0). Angles are to be returned in the unit of your choice, should be the smallest possible, and should be a positive number (negative a...

Dennis

02:52

Does your browser really show '11?

totallyhuman

...

i doubt it

mudkip201

lel

MD XF

@Dennis no I was just messing around

Stupid dyslexia, for five minutes I read that as "Jan 11 '11"

I just edited the HTML to mess around with people here

Ørjan Johansen

@Dennis Is github.com/TryItOnline/alphabeta the corrected version?

Dennis

Yes. All fixes are in the commit history.

Ørjan Johansen

02:56

OK, adding to esolang page now.

MD XF

@ETHproductions is your username in any way related to Ethereum?

totallyhuman

theBar = Exception()
raise theBar

MD XF

@Dennis Can you edit the Further details out of this since it's locked and they're all irrelevant?

Or at least the first two points

Dennis

I don't see a good reason to do that. They're still true, and it will make copy-pasting the post for the Best Of 2018 a bit easier.

@totallyhuman github.com/DennisMitchell/jelly/blob/…

4

Destructible Lemon

03:11

I sort of want to use the rubber duck room but it got frozen because noone used it

anyway, i discovered bugs in my 3d rendery thing and i think i figured out a way to reprogram it to work

MD XF

@DestructibleLemon chat.stackexchange.com/transcript/63300 ?

Destructible Lemon

yup

MD XF

@Dennis unfreeze-request: chat.stackexchange.com/transcript/63300

(sorry for multiple pings but you're the only mod active atm)

Destructible Lemon

@Dennis is it considered annoying to ask for an unfreeze if you know its going to get frozen in a day + freezing period

I feel like maybe its more annoying to post a bunch of unclear messages about my programs in TNB anyway

MD XF

Wait why was I posting permalinks instead of the room's link

Rubber Duck Debugging

For people who find rubber duck debugging to be a very effecti...

Dennis

03:20

@DestructibleLemon As far as annoying things go, this is pretty far down the list.

Destructible Lemon

oh ok

Dennis

Unless I'm on mobile. Unfreezing rooms from mobile is a pain.

MD XF

@Dennis What do you have to do on mobile?

Dennis

Switch to the desktop version, which is barely usable on such a small screen.

Pavel

03:46

What happens if you edit /etc/sudoers with something other than sudo visudo?

MD XF

The visudo command opens a text editor like normal, but it validates the syntax of the file upon saving. This prevents configuration errors from blocking sudo operations, which may be your only way of obtaining root privileges.

You could mess up and bork super-user privileges on your computer

Aha unix.stackexchange.com/q/27594/194482

Dennis

@Pavel If you don't make any mistakes, nothing. I'd personally use sudo EDITOR=nano visudo though, as I'd be far more likely to mess something up if I use vim.

MD XF

(TL;DR ^)

Pavel

@Dennis Wouldn't it be easier to export EDITOR in your .bashrc instead.

Dennis

In root's .bashrc.

Pavel

03:54

Does export not export environmental variables to sudo?

Dennis

You could also mark EDITOR as safe in the sudoers file, but that requires visudo.

Pavel

@Dennis Or sudo -E visudo

Dennis

@Pavel Not by default, unless they're defined as safe. sudo -E preserves the environment, but that's not the cleanest way if you need only one variable.

Destructible Lemon

04:09

according to wikipedia, blue is the most popular colour

ATaco

04:21

alias vim visudo

Dennis

@ATaco tio.run/##S0oszvj/PzEnM7FYoSwzF4iLS1Py//8HAA

ATaco

mission failed, we'll get 'em next time.

Destructible Lemon

alias vim=visudo

Dennis

I mean, who would want to edit other files.

Destructible Lemon

yeah i was thinking that

Οurous

04:50

I'm having an interesting problem caused by lazy evaluation and recursive optimizations. When a program doesn't terminate, it also produces no output.

ATaco

ReRegex does that, and I don't regret it.

Οurous

It's funny because I can still produce infinite output, but I have to terminate for it to start evaluating

Downgoat

05:16

Question: What should be the type of y in this situation:

func abs(x: Int) -> Int { ... }
func abs(x: Double) -> Double { ... }

let x = abs(1)
let y = abs(x)

Anonymous

Int

Anonymous

Use the strictest possible type

Downgoat

func swapType(x: Int) -> String { ... }
func swapType(x: Double) -> Int { ... }

let x = swapType(1)
let y = swapType(x)

What about what should happen in this situation?

Anonymous

Error

Anonymous

Well, either error or resolve it, depending on how concrete your types are

Downgoat

05:23

it's resolvable but makes type resolution algo O(n^2)

Potato44

@Downgoat either error, or some kind of defaulting rule that applies across the whole language

Downgoat

Right now emits warning about implicit int literal conversion to floating point

Anonymous

@Downgoat Yes, but only if you consider multiple statements. If you want to do context-free statement evaluation, it should error

Anonymous

The type of 1 (and therefore x) should be determined when that statement is evaluated

Downgoat

In that case, what about:

func swapType(x: Int) -> String { ... }
func swapType(x: Double) -> Int { ... }

let x = swapType(swapType(1))

Would this make sense to be String or error

Οurous

05:27

@Downgoat can double literals be written without the decimal?

Downgoat

yes

Οurous

It should be String, in that case.

Potato44

@Downgoat It depends on what other features the language has, does the language have something like interfaces, or rust's traits?

Downgoat

@Potato44 It's a language heavily swift-inspired. It does have both interfaces and rust's traits

Οurous

@Downgoat you can get around a lot of problems by making literals unambiguous.

Potato44

05:30

@Downgoat Rather than having arbitrary overloading, I think overloaded methods should have to be part of a trait.

Downgoat

@Οurous literals are unambiguous e.g. let x = 1 is Int because Int will take precedence over other types

Anonymous

IMO literals should be explicit and unambiguous. let x = 1 should always be an Int, no matter what.

totallyhuman

even python does that :P

Anonymous

@totallyhuman Python is duck-typed, so it's a bit different

Wheat Wizard

@Mego No way. Haskell's system is great it never leads to problems

Downgoat

05:36

@totallyhuman python doesn't even have strict typing so not comparable here

totallyhuman

>>> isinstance(1, int)
True
>>> isinstance(1, float)
False
>>> x = 1
>>> isinstance(x, int)
True
>>> isinstance(x, float)

doesn't matter 1 is always int

Downgoat

>>> isinstance(1**.5, float)
True

Wheat Wizard

@Downgoat Python does have strict typing

just not strong typing

Downgoat

@WheatWizard I wouldn't consider duck-typing strict typing

but ok

totallyhuman

@Downgoat right, exponentiation always returns a float. explicitly saying 1 results in an int

Wheat Wizard

05:42

@Downgoat I was confused. There is no such thing a strictly typed.

apologies

Downgoat

@totallyhuman according to python docs it is not interpreted as an 'int' but interpreted a 'number'

Potato44

@WheatWizard It does have its problems, but it very much has it's uses as well, like I was using 0 at the type Integral a => a in my brainfuck interpreter

Wheat Wizard

Yeah. Fair enough. The problem is that NegativeLiterals is off by default.

Οurous

06:02

Oh I can just invoke the IO functions without noting the sideeffects. I'm going to call it "fake-tional programming"

Potato44

@Οurous what do you mean by not noting the side effects?

New Meta Posts

06:19

0

Q: At what point does the get command (Befunge, ><>, etc) count as reading your own source code?

Related The get command, shared by Befunge and ><>, is a command that pops two values x and y retrieves a value stored at that cell (its counterpart is the put command, which stores a value at a certain cell). The problem is that the 2D surface is the same surface the source code is running off,...

discussion

Pavel

TIL: On the OpenVMS OS, creating a file and giving a file a name are two separate operations. You can create a file and never assign a name, and it will only be accessible by pointing to the physical location on the disk.

Οurous

@Potato44 I'll show you an example when I get it working, it's hard to explain accurately without a reference.

Downgoat

07:22

Transform Error: Annotation `_mockType` expected exactly 1 args; you provided 1 arguments. (/Users/vihan/Documents/Code/VSL/libraries/libvsl-x/src/Int32.vsl:2:14)

:|

Οurous

08:15

@Potato44 something like appUnsafe (execIO (putStrLn "Side-Effect")) arg -> this is basically an identity function on arg, which executes an arbitrary unique-state dependent function as a side-effect

Potato44

@Οurous Probably not a good idea, if it behaves anything like Haskell does, there is a good chance it only gets evaluated once, so will only print once.

assuming that you are doing something like unsafePerformIO

Οurous

@Potato44 It didn't end up mattering, the compiler outsmarted me and I had to cycle with *World anyway

It optimizes the side-effects out of anything that doesn't tangentially involve it, as I'm seeing now.

But hey, I have non-periodic infinite output from a non-halting program now, which was the last roadblock in the core of the interpreter flow.

Zgarb

@Οurous Are you making a functional language?

With laziness and side effects?

Οurous

@Zgarb github.com/Ourous/dirty - a lazy 2D recreational language

Implemented in Clean, which, as far as I know, is unique in the way it handles side-effects.

Downgoat

can a mod unfrezeze: chat.stackexchange.com/rooms/46888/vsl

@ASCII-only so today major progress on compilation. Only arrays, dictionaries, lambdas, STL, and memory management left :D

Zgarb

08:32

Looks interesting. What are your semantics? If you produce two infinite lists with side-effectful computations and, say, add them element-wise, what happens? Or can you even do this in your language?

Οurous

@Zgarb My language or Downgoat's language?

Zgarb

Dirty.

Οurous

Ah. Dirty doesn't have a notion of side-effects. If you output something, it vanishes from its respective stack and goes "somewhere else". If you ask for input, it is semantically identical from assigning a literal, where the value of the literal is decided every time it is accessed.

So aside from the side-effects, you can indeed produce and add two infinite lists. Nothing happens until you need the result.

Even in Clean, if you do something that alters uniqueness, the state doesn't change until you need the new state instead of the old one.

And as it's interpreted by Clean, the same thing would apply, if it had the notion of side-effects.

(I'm a huge fan of uniqueness typing)

Zgarb

Okay, but suppose you then try to print the first 10 items of the resulting list. Then you need to run the side effects that are used to produce the original lists. Are they run in some consistent order?

Οurous

@Zgarb Answering in respect to Clean: Yes. In the order you print them, left argument of the addition before the right argument. eg: left0, right0, left1, right1, left2, ...

Unless you made your own custom, and stupid, addition operator

where you take the right argument first.

Arguments, when they are required, are always evaluated in the order the appear.

... inside the same compilation run

Potato44

08:45

@Οurous Are you saying that the printing order is based on when the arguments get forced?

Οurous

@Potato44 Yes, it is.

Which is why, generally, you want to chain a unique state instead of multiple ones, or stateless sideeffects.

Οurous

08:57

@Potato44 @Zgarb if you really want to see some (IMO awesome) uniqueness juggling, look at codegolf.stackexchange.com/questions/153366/…

Zgarb

09:08

So, as far as I understand, in a uniqueness type approach to IO, you have a special datatype representing the "outside world" whose value you modify every time you preform IO, and the type system somehow prevents you copying or destroying it. Is this what you mean by "chaining a unique state"?

Οurous

@Zgarb Yes, you can't copy it. You can destroy it. And uniqueness isn't specific to World. The only thing special about World is that it has to be unique. I can have a unique Int, or a String, etc.

From a performance and optimization standpoint, it means you can mark memory regions as always destructively updatable, and it makes tail calling trivial if you use them right.

Operations on, say, *{#Char} (eq: *String) compile similarly to writing the same thing in C. Which has incredible performance impacts.

Potato44

I guess it is more or less like the RealWorld# token in GHC, but is actually visible because uniqueness prevents copying.

Adám

@Mego Least-squares (Moore–Penrose).

Potato44

@Οurous I can understand how uniqueness allows destructive update, but how does that make tail calling trivial?

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Build a half cardinal cyclic quine A half cardinal cyclic quine is a cyclic quine with two states, one perpendicular to the other. Rules You can decide which rotation you want to implement, clockwise or counter-clockwise. Your program must satisfy the community definition of a quine. This is...

0

A: Sandbox for Proposed Challenges

Build a cardinal cyclic quine A cardinal cyclic quine is a cyclic quine with four states, one for each orientation of the cardinal directions. Rules You can decide which rotation you want to implement, clockwise or counter-clockwise. Your program must satisfy the community definition of a qui...

Οurous

09:23

@Potato44 If a function takes unique arguments, and calls itself with them (or a modified version), no other copy of the arguments needs to be kept, and so you just jump back to the top of the function because the same memory was re-used.

In fact, no other copy of the arguments can be kept.

Stewie Griffin

I don't normally accept answers on code-golf challenges, since answers mainly compete against other answers using the same language (comparing Java to Pyth doesn't make sense). However, in this case, you found a very clever approach that is shorter than all other approaches in almost all languages, so I'm accepting this as the shortest answer, independent of language. Well done :) — Stewie Griffin 1 min ago

Οurous

You can't even have multiple references to the same unique state.

It even extends to a potentially non-periodic infinite set of lambda functions, calling more lambda functions with no heap or stack overhead.

I don't know if you could write such a thing. But it's a cool idea.

Potato44

non-periodic infinte set of lambdas?

like a container of lamndas, or do you mean something else?

Οurous

@Potato44 Not a container, just... "set" as in "a bunch of". Lambda-calling-lambda-calling-lambdas, ad nauseum.

I think you may end up with an infinitely large executable if you were to make all of their arguments unique though.

Potato44

@Οurous The lines that start with #. What do they mean?

I believe the ones starting with | are guards.

Οurous

09:34

@Potato44 # name = expression is kinda like a let, except it specifically adds a node to the pre-reduction graph, allowing it to work better with unique types.'

| is a guard. You can structure and use them like a c-style if else, but they are guards.

basically, you can't do let (a, world) = something world; (b, world) = something world in ...

but you can do #(a, world) = something world<newline>#(b, world) = something world

Which is closer to let (a, world) = something world in let (b, world) = something world in ...

but less ugly

Potato44

Is that because lets are unordered?

Οurous

@Potato44 Yep, let .. in .., and where .. are unordered.

they just start a new scope, and in the same way files are unordered, they are as well

You can pattern-match in order inside them, but not manipulate state. Because pattern matching is order-of-preference, not order-of-operation.

Potato44

@Οurous Does clean let you tie the knot like how ones = 1 : ones is an infinite list of 1s in Haskell?

Οurous

@Potato44 ones = [1 : ones]

almost identically

The only real difference is that [ ... : ... ] isn't using a (:) operator. There's a lot of stuff that's a function in Haskell which is sugar for a low-level instruction in Clean's ABC machine.

Potato44

Ah, I was about to ask why it had special syntax

Οurous

09:51

@Potato44 I'm going to head off for the night now, it's been fun talking. If you ever want to chat / ask more questions, hit me up in chat.stackexchange.com/rooms/70344/cleaning-up !

New Main Posts

0

Q: Quartic Summation

Guidelines Task Given two positive integers, find the sum of both numbers... to the power of 4. Examples 2, 3 -> 97 (2^4 + 3^4 = 97) 14, 6 -> 39712 (14^4 + 6^4 = 39712) 0, 25 -> 390625 (0^4 + 25^4 = 390625) Rules You will only ever receive two positive integers as input (bonus points...

code-golf math number

Adám

10:27

I can't tell whether this is real on an elaborate joke.

Οurous

@Adám someone should make a golfing language which maps each key value from that specific keyboard to a command. Call it legalese.

betseg

10:52

@Adám less real than devnull-as-a-service.com

New Main Posts

11:33

0

Q: Find the interval

Guidelines Introduction In music, there are steps in between notes. We call these intervals. The intervals can be seen below (For now, just look at the numbers below the notes, and disregard the classifications to the left of them): As you can see, to calculate the interval from one note to t...

code-golf music

New Main Posts

12:33

1

Q: Take a stand against long quine lines

or: Build a vertical quine Inspired by Take a stand against long lines. Your task is to build a vertical quine with as short a line length as possible. Scoring Shortest line length (excluding newlines) wins, with code-golf criteria as a tie-breaker. Line length is determined as the longest l...

code-challenge quine source-layout

Erik the Outgolfer

13:53

@NewMainPosts so, now that line length 1 has been done to death, I wonder if there is any way to do line length 0...

Martin Ender

@EriktheOutgolfer sure, write a Lenguage quine

Erik the Outgolfer

>_> that's boring though

hm...maybe not so boring

Martin Ender

In Retina 0.8.3 a program with a single linefeed prints a single linefeed, but I wouldn't consider that a proper quine.

Erik the Outgolfer

well, of course the single linefeed doesn't identify itself so no :P

Adám

CMP: Should I main or CMC: Split on first unique. E.g. "mississippi" → ["m","i","ssissi","ppi"] ?

Erik the Outgolfer

13:59

hm, I'd say main (sandbox first), although you can say the Jelly solution is already ready :D

Fatalize

@Adám main imo

Erik the Outgolfer

> This election is currently in the election phase. Voting ends tomorrow.

may I suggest using "voting" instead? :P

Mr. Xcoder

I can't wait for the election to end

Looking forward to see the results

Zgarb

14:15

@Adám Related

Adám

@Zgarb Thanks.

@EriktheOutgolfer I doubt sandbox is necessary for such a simple challenge.

Erik the Outgolfer

@Adám that's exactly why I recommend sandboxing it for multiple reasons

Adám

@EriktheOutgolfer Huh, what?

Erik the Outgolfer

1) catch dupes 2) let the community vote on it before posting to main

Mr. Xcoder

@Adám I don't really understand the challenge. Can you clarify? What do you mean by first unique?

PhiNotPi

14:19

@Mr.Xcoder same here

Adám

@Mr.Xcoder I'll sandbox it and ping you.

Mr. Xcoder

Fine

Fatalize

Basically you should split everytime you find a chararcter that has never appeared earlier in the string

Mr. Xcoder

Though I probably won't be around in the next few hours.

Zgarb

@Adám Is ["","m","i","ssissi","ppi"] a valid output? There's a split before the first occurrence of m too.

Erik the Outgolfer

14:21

but I agree that can most probably only be inferred from the test case

Mr. Xcoder

I got it now

Not necessarily. It's not too hard to define such a substring, at least the way I understand it.

Adám

@Zgarb No, the first substring doesn't begin with a not-previously-seen character.

Erik the Outgolfer

@Zgarb me too, although I could not see why that output would be valid

Mr. Xcoder

Also I have a feeling that Husk's ↓ could be used in some way.

Actually U

Erik the Outgolfer

shush :P

Mr. Xcoder

14:24

I have a solution ready hopes Adám posts it when I'm online :p

Fatalize

@Mr.Xcoder How many bytes?

Mr. Xcoder

Wait I realised it's not valid yet.

Erik the Outgolfer

I assume that me, Adám and Zgarb have solutions ready :P

Mr. Xcoder

Actually U doesn't work like that :(

Zgarb

@Adám Okay, that's actually a good unambiguous spec for the challenge. Split into as many substrings as possible, each of which begins with a character that does not occur in previous substrings.

Adám

14:26

@Zgarb Yeah that was already my formulation for the actual challenge text.

Mr. Xcoder

Hm, I realised Husk's S=<function> works exactly like Pyth's <function>I...

Adám

0

A: Sandbox for Proposed Challenges

Split on first unique Given a printable ASCII string, split it into a list of (at most 95) strings with a new sub-string beginning every time a character occurs which has not previously been seen. Examples "mississippi" → ["m","i","ssissi","ppi"] 'P P & C G' → ["P"," P ","& ","C ","G"] "AAA"...

Erik the Outgolfer

> split it into a list of (at most 95) strings

@Adám what?

Mr. Xcoder

Looks good to me, but it needs the standard boilerplate :P

Erik the Outgolfer

you definitely don't need that part lol

Adám

14:31

@EriktheOutgolfer Since there are only 95 unique printable ascii chars, there cannot be more than 95 substrings. The 95th will necessarily continue until the end because no character can cause a new substring to begin.

Erik the Outgolfer

but that's implied

Mr. Xcoder

@Zgarb How can one use ↑ as Longest prefix where function gives truthy result? This errors for me

And switching the order of arguments doesn’t seem to help either

Zgarb

@Mr.Xcoder The docs are not very clear there, it takes the longest prefix where function gives truthy value on each element.

Mr. Xcoder

Ugh.... Ok. thanks

Erik the Outgolfer

maybe ↕ (span) is of any help then...

New Sandboxed Posts

14:35

2

A: Sandbox for Proposed Challenges

Split on first unique Given a printable ASCII string, split it into a list of (at most 95) strings with a new sub-string beginning every time a character occurs which has not previously been seen. Examples "mississippi" → ["m","i","ssissi","ppi"] 'P P & C G' → ["P"," P ","& ","C ","G"] "AAA"...

xfix

0

A: Take a stand against long quine lines

Rust, vertical length: 5, bytes: 301 Note, the first line is empty. Vertical length of 5 was chosen to be able to use print. fn main (){ let t=( r#" fn main (){ let t=("# ,r#") ; print !( r#"{} r#"{ }"{} ,r#"{ }"{}, r#"{ }"{} {}{}{ }{ }""#, r#" ,t.0, t.0, '#', t.1, '#', t.2, '#', t.1, '#', t....

I'm not sure if I got what this challenge asks for quite correctly

Erik the Outgolfer

looks like you did

xfix

thanks for confirming :)

New Sandboxed Posts

14:53

0

A: Sandbox for Proposed Challenges

Design a language and golf its interpreter Your task is to design a language and write an interpreter for it. Your language must have the following properties: Its source code will consist of strings of two characters. I will write them as ( and ) and refer to them as parentheses, but you can ...

user202729

CMP: How do you open the language bar page?

(Google for "language bars" doesn't work)

Oliver

@user202729 abrudz.github.io/lb

Adám

@user202729 That should rarely be needed. Anyone who uses those language bars will have bookmarked them directly and doesn't need to access the info page often.

DJMcMayhem

15:21

CMP: In your opinion, is it appropriate to post challenges that are completely unfinished to the sandbox?

Erik the Outgolfer

yes, and it's been done a lot of times

ETHproductions

@MDXF No actually, I've been using ETH since 2012

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Escape from the tarpit cops-and-robbers popularity-contest Cops You will prepare two things: A formal specification of a programming language, or other computational system. (Computational systems are defined below.) A proof that your system is Turing complete, according to the somewhat str...

DJMcMayhem

I guess I don't really see it that way because it doesn't seem useful to me to post a completely unfinished challenge to the sandbox. Usually where challenges go wrong are in the little details, so you'll never get feedback on details that aren't there

ETHproductions

15:37

I mean, you can keep updating the challenge and ask for feedback when it's ready

xfix

15:59

Is Rust macro system an allowed programming language (it is Turing complete)?

moonheart08

It's turing

doc.rust-lang.org/book/first-edition/macros.html << See section "The Deep End"

It can implement a Bitwise Cyclic Tag system

xfix

yeah, i know it's Turing complete, i wrote Brainfuck interpreter in it

can i use it for code golfing?

moonheart08

Uh, dunno. I'm pretty sure code for it is just 'rust'

xfix

fair enough

moonheart08

if it's a single macro, then maybe it could be classified as something else? Dunno. Ask in meta

also, why

xfix

16:02

i guess it will be fine if it returns a result as an error message

moonheart08

What sane person would make a bf interpreter in rust macros?

I mean, it's not as insane as the BF interpreter made in Opus Magnum, but still.

xfix

"What sane person would make a bf interpreter in rust macros?"

me, although i'm hardly sane

the Rust macro language itself is a pretty neat functional language

moonheart08

True

You could make an entire mini language out of it, strip out all the rust, just the macros

xfix

play.rust-lang.org/…

this is a brainfuck interpreter i made

moonheart08

You are insane

So if i'm reading this right, this unrolls the program into loopless code?

xfix

16:07

everything is evaluated by Rust macros

which are recursively called to obtain the result

note this

const OUTPUT: &str = bf!(
    ++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.
);

i write to const variable, and const in Rust is very limited in terms of what it can do

essentially the macro returns a string literal, nothing more

moonheart08

You are truely insane

Uriel

@all does golden codegolf badge hammers on every close/reopen vote or just dupes?

moonheart08

next support input lul

DJMcMayhem

@Uriel Only dupes

But mod votes hammer on every type of CV

New Main Posts

3

Q: Print "Hey Jude" from The Beatles

Your task is to write a program which prints following four verses extracted from the lyrics from The Beatles' song "Hey Jude" (© Sony/ATV Music Publishing LLC): Hey Jude, don't make it bad\n Take a sad song and make it better\n Remember to let her into your heart\n Then you can start to make it...

code-golf kolmogorov-complexity

betseg

16:19

github.com/betseg/minestest/commit/… it prints the typed tile's number after 2 typings, and doesnt print the mines or the flags at all. halp?

totallyhuman

@DJMcMayhem I got downvoted when I did that, so I'd say just stick to a markdown editor

Uriel

@DJMcMayhem thanks

NieDzejkob

@betseg how are you supposed to play this?

what is it asking me to enter?

@betseg how do you differentiate MINE (9) from FLAG (also 9)?

what happens when the player flags a square that isn't a mine?

betseg

16:38

@NieDzejkob [x coord] [y coord] [optional 0/1 1=flag]

@NieDzejkob theyre the same, but the former is for **grid, and the latter is for **mask

@NieDzejkob it just stays there

NieDzejkob

why is mask defined in both play_game and globally?

(this is your bug, btw)

(at least I believe that's it...)

betseg

THANK YOU

i knew i forgot to take something out

NieDzejkob

when you step, explore_neighbors does the modifications, so they go to the global

betseg

@NieDzejkob also, :P

should put a readme in there

NieDzejkob

yeah, I noticed

moonheart08

16:58

I'm making a KoTH framework for an idea i want to prototype. I'm trying to integrate support for compiled programs using dlopen to load in a resulting library. How would I sanely send data to the dlopen'd library for a 'tick'?

Rubber Duck Debugging

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