The Nineteenth Byte

I don't get it but cool

this looks like flobnar

^^ pretty much sums up all the code you've posted thus far

and yes, also reminds me of Flobnar

Which is a very good thing in my mind

does it have a name yet?

It's been called TacO

TacO(nlog(n))

4:05 AM

Wasn't it TacIt?

TaciT <- Tac ciT <- Tac Tic

I knoe that's probably not what it's from, but it reminds me of that kind of thing

@MistahFiggins It's Taco + Tacit

Cool

Tac-It is the type of Language it is.

Tacit programming

Tacit programming, also called point-free style, is a programming paradigm in which function definitions do not identify the arguments (or "points") on which they operate. Instead the definitions merely compose other functions, among which are combinators that manipulate the arguments. Tacit programming is of theoretical interest, because the strict use of composition results in programs that are well adapted for equational reasoning. It is also the natural style of certain programming languages, including APL and its derivatives, and concatenative languages such as Forth. Despite this base, the...

When a newbie comes to the site and gets all defensive about losing with java

4:08 AM

@WheatWizard My antichess is quite rusty, but I'd be up for it

@Doorknob Ok thanks!

Cool I can watch

@Doorknob Oh I have to capture If I can, I didn't know that

Right, otherwise the game would just go on forever.

would it?

4:11 AM

I'd imagine so.

You can move into check?

There is no check. The king isn't special anymore, it's just a regular piece.

oh

Oh, and you should probably note that if one side has no moves left, they automatically win rather than it being stalemate.

ok

That was good fun

A good deal different than what I expected

4:17 AM

Yeah, variants are super fun

multiplayer variants are cool

would you mind another? now that I have the rules down

I could play anti-chess rn if you want

@DestructibleLemon Isn't all chess multiplayer?

@WheatWizard Sure! (Once this game ends, there'll be a rematch button.)

@MistahFiggins Ok

4:18 AM

we could totally do that

multi can also mean >2 in some contexts

@Doorknob You won

I can play also

@WheatWizard Not yet, technically. :P

I thought I forfit

4:19 AM

My favourite chessesque game is martian chess

@DestructibleLemon wazzat?

Martian chess

See Jetan for Edgar Rice Burroughs' Martian chess. Martian Chess is an abstract strategy game for two to six players invented by Andrew Looney. It is played with Icehouse pieces on a chessboard. To play with a number of players other than two or four, a non-Euclidean surface can be tiled to produce a board of the required size, allowing up to six players. == Rules == === Initial setup === Each player starts with nine pieces: three small (pawns), three medium (drones), and three large (queens). The color of the pieces is irrelevant to the gameplay. A mix of colors is recommended. Players initially...

also someone made an ai

kongregate.com/games/pvl_staven/martian-chess

anyone here want to chess?

actual chess? Maybe.

sure

@Mendeleev I'm in

4:22 AM

@ThomasWard lichess.org/u2WHxa5T

Oops, I clicked a thing

@Mendeleev it's fine I forgot my lichess account

gotta reauth it :)

Sorry, I stole your invite

ok then

no problem :) I will lurk

4:40 AM

wait... I just forgot how the maze is oriented for a bot...

@ThomasWard Want to play chess?

sure

don't expect fast reply though

i'm working on fixing some things in SmokeDetector at the same time

OK

SmokeDetector is the spam detection AI?

@ThomasWard Sorry :/

so here is a really off topic question: has anyone ever programmed a texas instruments microprocessor? Perhaps one in the MSP430 or MSP432 line?

4:49 AM

@Mendeleev yep.

@MistahFiggins no problem :)

took a while to get the 'reset password' link from lichess :)

en.lichess.org/PNEL8iid

@ATaco Ayy, documantation!

Yeah, Still need to Write up Strings List and Flow, but yes, Documentation.

@Mendeleev And i'm there

It's "Almost" turing complete.

4:51 AM

I wonder if Chess against an AI is turing complete

It can theoretically run any Halting program.

Also, Chess has finite memory, so it is not Turing Complete

Is there a term for "restricted Turing complete"?

Generally things aren't "Almost" turing complete.

"Not TC"?

anybody in here used C# a fair amount?

4:54 AM

wow lag

@NathanMerrill sigh whats a fair amount. I've been using it for a few weeks now.

Java > C#

@ГригорийПерельман pretty much.

Except garbage collection

I did fix that!

Just don't run your main loop on the main thread.

If you don't like the GC you can use another one.

There's 4 options

4:55 AM

@ГригорийПерельман 'scuse me? What 4 are these.

C# has better method dispatch when dealing with generics

which is why I'm asking

lets say you have three functions

foo<T>(T value){}

foo(IBar bar){}

@AshwinGupta blog.takipi.com/…

foo(IBar2 bar){}

if you pass the function an object that implements both IBar and IBar2, what happens?

@ATaco This language is awesome!

Also, @ГригорийПерельман I'm still writing in Java 7..

And I am very thankful, I do try.

I made a language that can't implement a truth machine but can detect primes with only + - and repeat n times

4:57 AM

@NathanMerrill wait ur saying that IBar and IBar2 are parent classes

they are both interfaces

###-nl%l>>>>>14
#  2  #
# 0   #
# p   #
##?@  #
  p   %i
  1   #
    3 %i2
  i i v
2i*+-#?/
      i

and a class can implement both of them

@NathanMerrill oh

Look at that beautiful monstrosity.

4:58 AM

hence, the I :P

Q: Non-strict multiple interface type parameter constraints?

does this help:

5

Excuse me if this is a dupe, but I couldn't seem to get the right combo of keywords to filter down the various type constraint and generics questions out there (as there are a lot). I have two interfaces--let's call them IOnline and IOffline. They're closely related in that they describe near...

@ГригорийПерельман oh wait what is the point of the last one? Doesn't JVM have a max heap size of 4 GB anyway even for 64 bit versions

Pretty shure they changed that.

@ГригорийПерельман oh alright ill take ur word for it

I actually found a pretty good article about all of the nit-picky details:

csharpindepth.com/Articles/General/Overloading.aspx

5:03 AM

Thanks.

@NathanMerrill yeah that'll answer ur question way beter then I can

DJMcMayhem

@AshwinGupta I have! Actually fairly recently. Although it wasn't in that series. I don't remember the exact model but it was a TivaWare something or other

It was very fun! The first large-ish firmware project I've ever done

5:22 AM

@Mendeleev FYI I need to get a little bit of sleep, but I'll be happy to continue the game when I wake up.

sleep calls.

Q: Should stdout be ignored when the program is a function?

lichess.org/DJN1RdYn

feersum

6:13 AM

I'm getting very confused trying to implement type unification for my ML compiler... I think I'm going to try asking on the CS stack.

I doubt it will go well though... I have very little experience with getting real questions answered on SE.

New Meta Posts

1

My understanding is that, when stdout is used for output, stderr is ignored. Similarly, it would seem that, when a function's return value is used for output, stdout and stderr should be ignored. After all, this Racket code prints #<procedure>, and yet no one would complain about it: (lambda ...

discussion policy answers

feersum

6:34 AM

Luckily I have found the answer on Wikipedia right before posting the question.

6:46 AM

TacO is now on TIO!

DJMcMayhem

Congwatulations!

7:44 AM

I just lost weeks of work by typing the wrong git command

(ノ°Д°）ノ︵ ┻━┻

8:10 AM

@ГригорийПерельман :^(

So, I have a weird quandary about truthy/falsey:

In Pip, 0 is falsey. [0], however, is truthy. But lists, by default, are output without delimiters, so outputting [0] just prints 0. If my program's output is technically [0], can I claim it's a truthy output even though it looks like 0 when it's actually printed?

Umm, what?

So, 0 is both truthy and falsy?

... I was afraid that would be the reaction. :^/

(ノ°Д°）ノ︵ ┻━┻

Hold your horses, I can explain. Similar situation in Python:

The integer 0 is falsey.

The string "0" is truthy.

If you print the integer 0, it shows up as 0.

If you print the string "0", it shows up as 0.

btw, I have a april fools idea

8:20 AM

See the distinction?

hmm

Same thing with Scalar 0 vs List [0] in Pip.

I guess the Python example seems clearer (IMO) that "0" should be regarded as truthy, even though its output is indistinguishable from something else that's falsey.

Well, idk about that but I think "0" should be regarded as falsy

In which language?

Some languages like C and Java

(but they suck definitely)

8:25 AM

if "0": print("truthy") prints truthy in Python. Pretty conclusive.

Do we need stack snippets in profiles

What use case are you thinking of?

Not much yet, just thought it would be useful for making things like profile utilities

btw, my profile has a close button

Generally, I consider Lists as Falsey if their length is 0, That applies to strings aswell. But a Char is falsey if it's 0.

hi @fəˈnɛtɪk

8:30 AM

@ATaco I mean, that varies by the language. I wasn't asking about what values count as truthy/falsey; I was just expressing some concern about a truthy value that, when printed, looks like a falsey value. But the more I keep talking, the more I'm convincing myself that it's not an issue.

All good, Was just sharing my 2 cents.

Is there a site for javascript permalinks where when you click the link it runs immediately

jsfiddle doesn't seem to do that

ASCII-only

@NathanMerrill Yes a lot

Oh wait jsfiddle does that

Q: Simulate a two-body gravitational system in 2d

0

Imagine you have two objects in a two dimensional space. Each has a position determined by coordinates in the space. Their position is changed by their motion, which is caused by the Gravitation between them. Write a computer program to output the positions of the two objects as they change over...

code-golf simulation physics gravity

8:50 AM

Do you guys use dwitter

This is my first one

dwitter.net/d/2160

It looks awesome for me

9:44 AM

I have a challenge idea

its like this

but the left one misses every minute and the right one misses every hour so it forms a clock

betseg

It's been a week since the last language was added to the polyglot chain challenge. Safe answer incoming?

The divisors one?

betseg

The polyglot one

ASCII-only

10:30 AM

@MatthewRoh I'd say VTC as too similar

In langs with date libraries it's too easy, in langs without them it isn't very easy if it's at all possible

hi all

Q: This is the sort of challenge that bytes

0

I need to stop thinking of punny names Your task is to create as many snippets (programs that have input and output built-in), functions or full programs as possible that sorts whatever your language's version of integer arrays is in ascending order, but for each program, you're only allowed to ...

code-golf code-challenge sorting

Adám

11:37 AM

I seem to remember a challenge to underline text. Anyone able to find it?

Jan Dvorak

puts"<u>#gets" ?

New Sandboxed Posts

1:14 PM

0

A: Sandbox for Proposed Challenges

Questions Sandbox: What would be other suitable tags? This challenge sounded better in my head.. >.> Anyone has a different challenge idea, with the same movie vs real-life time bomb theme? It's about to blow!! code-golf Introduction: Ever seen a movie where a time-bomb is about to blow u...

Hooray. An answer!

PhiNotPi

?

I provided an answer to this question

1:32 PM

@fəˈnɛtɪk thank you

out of interest, is javascript just your favorite language?

it's not an obvious choice :)

It is one of the languages I am most familiar with. It is also easy to code online.

0

Q: Name for Code Golf winner

Appreciate this is subjective, and not really a code question, but it's for a Code Golf competition to raise money on Red Nose Day in the UK, so for "charridy, mate". I'll delete the question once answered :) I'm holding a department Code Golf competition as part of Red Nose Day and I want to c...

code-golf

@NewMainPosts "You are the shortest" would work. And it has funny connotations.

Anonymous

@fəˈnɛtɪk A lot of languages are easy to code online thanks to TIO

4

I'm using repl.it so that I can save my work and return to it.

1:43 PM

@fəˈnɛtɪk You can save your work on TIO...

tio.run/nexus/python2#@19QlJlXoqDkkZqTk6@jEJ5flJOiqPT/PwA

But then I need to save the hyperlink

Same with repl.it, unless you have an account.

Anonymous

That's not hard with bookmarks

Anonymous

It's also worth noting that Dennis is working on accounts

I do use TIO too. Mostly for writing things with Cardinal though.

1:47 PM

@Mego The hard part is server-side permalinks. With progressively larger storage requirements, I'm not sure TIO can afford it...

Anonymous

@Dennis I have some thoughts on that. I'll post them in the TIO room

@fəˈnɛtɪk sounds good

2:04 PM

@fəˈnɛtɪk does your code just die for n = 5?

I was thinking of a possible method

@mbomb007 This one is more about speed, but appreciate the idea. i.e. Fastest way of doing something.

@BlueChippy That's not code golf then. Code golf is about the shortest code.

It dies for n=5 because it tries to compare element by element 16k 5length arrays

@Dennis it is PPCG whose url is codegolf

@fəˈnɛtɪk ah ok.. I think a really simple method that might be interesting is to choose P and T at random and to just try adding the sequences greedily

Rod

@BlueChippy Fastest Gun in the West ?

2:17 PM

@Lembik Uh, fastest code challenges are... programming puzzles. >_>

@Dennis right

NonlinearFruit

@BlueChippy gg, 2 bytes

but the URL is codegolf :)

not ppcg

I am just explaining the possible conflation of code golf with codegolf with PPCG

Point taken.

@Lembik The comparison is just to remove all the duplicates in the hamming distances.

2:20 PM

@Dennis Shortest steps to solve the problem in this case (fastest, most expedient), rather than pure bytes - but still golf IMHO as there is a "fewest x taken".

@fəˈnɛtɪk right.. so my greedy method avoids that problem

but may be terrible :)

@Lembik it would probably take a few years or so for 5

AS in golf - it's not how, its how many :)

By steps do you mean processor instructions or do you mean number of functions calls made.

Loosely no. of calls made - if not code golf, then code sports of some kind! :)

...but name of the winner is the important part - so they can have a trophy and lord it over their minions

...until the next one :)

2:28 PM

@Lembik Brute forcing your question for 5 would work if you felt like going through all 3.459*10^5067 possible subsets.

So, it'll just take a while.

Which makes it a kinda odd choice for a fastest code challenge. My code is already O(n^3n)

@flawr en.reddit.com/r/AskOuija

code-golf arithmetic number-theory

2:46 PM

4

Q: Pascal's Column Sums

Most everyone here is familiar with Pascal's Triangle. It's formed by successive rows, where each element is the sum of its two upper-left and upper-right neighbors. Here are the first 5 rows (borrowed from Generate Pascal's triangle): 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 We're going to tak...

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Counter-Fibonacci Sequences code-golf fibonacci math sequence Given three numbers m,n and p, your task is to print a list/array of length p starting with m and n and each element after p represents the difference of the 2 numbers before it (Counter-Fibonacci Sequence) For this challenge you ca...

> Windows on the target machine was shut down. This may prevent event log collection.

Warning message from a monitoring system we have here.

Like, no duh?

lol

3

3:02 PM

^ Pinned message "Chat messages are deleted […] to keep the room on topic."

yes

I'm fine if the message is deleted/moved

however, that's up to the ROs and mods, and I'm fairly certain my single picture isn't what the pinned message is referring to

You post pictures like this pretty much every single day

yea

and almost nobody but you complains, and they often get stars because people like them

That's because there is no objectivity here, not because you are on topic

"no objectivity"?

Poke

3:06 PM

this is a chatroom. there isn't a big conversation that's being interrupted. chill

10

@Fatalize The pinned message was because people were asking "Why was I kicked" after a bunch of mods came in and kicked people due to flags

This message reminds people of what the rules are here, it's not only addressed to those people

@fəˈnɛtɪk there was actually only 1 or 2 flags (mod flags), it was mostly the trashing

@Fatalize it's a notice for people after they have been kicked/had their messages trashed, it's not laying down rules

It's not laying them because they already exist

Okay can we stop having this conversations. A little noise is just fine as long as no real conversations are going on

3:10 PM

I don't really want to argue about the wording of the pinned message though, my point is: 1 picture doesn't really matter.

@DownChristopher pretty much yeah. (assuming the noise isn't offensive or whatnot, but that's not 'noise' anymore)

@Fatalize Yes that is the nice thing. I enjoy them

That moment when you realize you tried to .push text to a string... and it took 2 days to notice..

@DownChristopher where is that?

khanacademy.org/computer-programming/new-program/…

updates are not pushed yet

@fəˈnɛtɪk The challenge that you have the only answer to

@Fatalize Is your avatar the "Y" and "A" from the Brachylog logo?

@AdmBorkBork true.

3:20 PM

Neat.

quartata

@Fatalize hahahaha

(which are supposed to be logical and and logical or btw)

quartata

robot(fatalize).

I need codez: CMC: for a integer N>0 return all binary numbers that have the amount of digits <= n (no decimals)

Ex: input 2 return 00 01 10 11

quartata

lambda n:[bin(x)for x in range(2**n)]

3:25 PM

Thanks. I didn't know how to do that :P

I was stuck

Q: Counter-Fibonacci Sequences

0

Given three numbers m,n and p, your task is to print a list/array of length p starting with m and n and each element after p represents the difference of the 2 numbers before it (Counter-Fibonacci Sequence) For this challenge you can either use a function to return or print the result or a full ...

code-golf math number sequence fibonacci

DJMcMayhem

Wasn't that just in the sandbox like 10 minutes ago?

yes

That was fast

Been deleted from sandbox already too.

3:31 PM

Wow that is fast

var gabln=function(n)
{var a = [];
    for(var i = 0; i < (2^n); i++)
    {
        a.push(binary(i,(2^n)));
    }
    return a;
};

Anyone know why that does not push all binary numbers with a length of n?

Why not just use bitshifting and normal decimal numbers to get the hamming distances

Do what?

I am not a CS major :P

Sadly my knowledge of very useful thing in cs is about 0. Hence my bad code golf scores

Bitshifting. 2>>1=1, 1>>1=0, 1<<1=2... Not sure what it might be in the language you are using though

Processing.js

Woohoo, Mathematica 11.1 is out. How cool is this:

> Do arithmetic (with *, -, etc.) directly on 2D and 3D images

3:38 PM

wait what

> Space-filling and fractal region constructors such as HilbertCurve and SierpinskiMesh

Yeah you lost me with the arithmetic on images

there are built-ins ImageAdd and ImageMultiply for "blending" images together. You can now use the usual arithmetic operators instead.

@DownChristopher Another thing of note. You might not want to be trying the fastest code puzzles if you don't really understand CS.

@fəˈnɛtɪk Well I enjoy it and don't really care about winning

It also makes me learn a lot

I find the hard way to do things before we had bitshift (a topic I have read about before)

3:42 PM

Anyway, bitshifting for integers. 1 is 00000001 or something like that. when you use >> to bitshift right, it becomes 00000000, which is 0. if you bitshift left (<<) it becomes 00000010 which is 2.

@MartinEnder So they golfed some operators for you? Neat.

yep

Ohhh, there's a ModularInverse built-in now.

@fəˈnɛtɪk o

hahaha, we can finally save a byte on Reverse@Sort thanks to the built-in.... ReverseSort...

Wow one byte golf

3:46 PM

@MartinEnder I have a not upgradeable license ;-;

I'm stuck on 10.4

that's unfortunate :(

@ГригорийПерельман Why would you have mathmatica? You are young :P It is so $$$$

@BlueChippy Ah, right. Sorry. I'm so used to code-golf.

@DownChristopher It rendered those dollar signs as $\LaTeX$

@ГригорийПерельман But still

ETHproductions

3:48 PM

4

I guess this is a thing now

I got a discount, it only cost me ~75 dollars. It also came with Wolfram|Alpha Pro, which is nice.

@BlueChippy Maybe "Optimizer Miser"

@ГригорийПерельман only 75

how many items does tio show in an array?

ETHproductions

The change from meta.codegolf to codegolf.meta is messing with my rep. I now have 20 more on the main site than on meta

Downgoat

3:57 PM

@ГригорийПерельман :O so now you can run goat detector? :D

@ETHproductions Wait, when did that happen?

ETHproductions

About 9m ago, I think

Clever way of dealing with certificate issues btw.

They give out Mathematica at a lot of places. I have a copy of Mathematica 6 I got for free.

Downgoat

@ETHproductions does this mean we have to fix userscript?

OH GOD THE SANDBOX VIEWER

(does anyone still use that?)