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00:00 - 22:0022:00 - 00:00

12:08 AM
Oooh, I just noticed that we now have only 2 less 10k users than Code Review :D
 
Is that a good sign?
Are we actually on our way to getting out of Beta?
IIRC, the number of high-rep members (or lack thereof) was one of the main things holding us back.
 
OK, it appears that for a simplified LOS system I finally have the blink program working
now I just have to implement the rest of the LOS test properly...
... and make the code a bit shorter (3.2kB ATM)
 
12:57 AM
I vaguely expected 2-4k for my idea on that one, which is why I didn't try
golfing something that big doesn't appeal to me. I hope someone gets it in 200 bytes of golfscript :)
 
1:29 AM
heh, I'm on 1777bytes of C# right now
I'll probably submit now as it is, and then golf it properly when I'm not asleep
 
1:48 AM
ok, posted answer to Blink
now I am allowed to sleep, g'night all
 
 
4 hours later…
5:57 AM
.. I0 .. ..
.. /\ -- ..
.. .. =0 ++
.. .. -- X0
\\ .. =0 ++
.. .. \/ X1
-- /\ -- ..
S0 .. -- ..
\\ .. S0 ..
.. O0 // ..
 
@MartinBüttner thanks for the messages and for adding me to the marbelous repository. I've been catching up on sleep. Looks like lots of progress made...
@Sparr I've not kept up with the advancements. What are X and S?
 
# ./pymbl.py fib.mbl 11
89
@githubphagocyte I kinda went off on my own after everyone went to sleep tonight. we have a chat room just for marbelous now. chat.stackexchange.com/rooms/16230/marbelous-esolang-design
 
@Sparr you made a fibonacci generator in marbelous??
 
X is an output that short circuits the function, causing it to return regardless of whether the other outputs are full
a single function recursive fibonacci generator
S is a subroutine
similar to F in the old spec
@githubphagocyte come over to the other chat room?
 
 
2 hours later…
7:45 AM
So TIL that the Bowyer-Watson algorithm was developed independently by 2 people at the same time and both published in the same issue of the same journal
 
woah
 
8:29 AM
oh no
missed a rather important clause in Blink
going to add at least 200 bytes I should think
 
9:01 AM
300bytes!??!?!
 
9:45 AM
interesting, so starred posts with enough stars can float back into the sidebar even if they've already been pushed out
 
@NathanMerrill would like your input on marbelous functions having a maximum number of outputs, each in a different direction, rather than a stream of an arbitrary number of outputs exiting in the same direction.
 
(I do :))
 
9:59 AM
and another bug
 
10:15 AM
I hate this code
I can't bear to make it any worse by subbing character literals for integer literals
 
@VisualMelon I think you can save a character by replacing struct with class. I know, it's not very much, but still...
 
no, the struct is there for a very good reason ;)
I make good use of struct comparisons
 
ah, ok
 
If I wasn't afraid of the LOS code I'd probably try and compact the 4 for-loops into 2
 
11:15 AM
2011bytes, this code is horrible
 
11:46 AM
@Sparr, what do I do about the dogfighting koth?
 
12:12 PM
@Doorknob if I CW something, can I undo that?
 
0
A: Proposed Question Sandbox - Mark XIV

flawrInspired by lifecompetes.com Multiplayer Game of Life (GOL) There are n players that play the Game of Life (standard rules) on an 50 x 50 grid. (Size, border conditions? Toroidal, Absorbing, Mirroring?) Before first GOL-Step When the game starts, each player has 12 cells that he can place any...

 
12:34 PM
Flag for a mod if it's important or an accident @Martin
 
@Doorknob well I noticed that one of my own tweetable answers isn't valid as it stands. so it would be only fair to make that CW, too. but I think it's fixable now, in which case I'd like to go back. :D
 
Ah, ok. Linky?
 
Done
 
thanks
 
1:06 PM
@Doorknob there's voting going on in the Marble spec draft
 
@Doorknob It's actually a fun interactive process
 
@MartinBüttner I have an idea
Each square is representable with 3 characters.
the 3rd is the marble
 
unprintable ascii? :/
 
however, there are 256 machines 00 to AF
...which will produce a marble on the square below
then remove themselves
 
Wouldn't 256 mean 00 to FF? What am I missing?
 
1:08 PM
sorry, yes FF
my bad
so, the format is still the same
 
but how do you represent a marble with a single byte?
 
but we can still take an intermediate layout and save it
...an ascii character
the 3rd one
 
so what about unprintable ascii?
we've been trying to avoid that like the plague
 
That's a relief - I thought there was some weird marbelous voodoo going on that I didn't understand...
 
0
Q: Convert Not an Answer to Community Wiki

githubphagocyteI noticed a couple of answers to the tweetable art question have been converted to community wiki. These are questions which, although interesting, didn't keep to the question requirements (the code was longer than 140 characters and additional functions were added outside the specified red, gree...

 
1:10 PM
(well, I guess there is, a lot, but at least I get that one bit...)
 
@NewMetaPosts I was going to ask that very same question
 
@MartinBüttner escape codes?
 
@Rainbolt I'm torn because I find both the answers fascinating to look at but it seems unfair to leave the images there as it makes it look easier than it is to produce interesting images
 
@NathanMerrill that's 4 bytes, then you can use hex again
 
Ninja'd by the culprit lol
 
1:12 PM
internal memory storage would only be 3 bytes
input output may have a few extra characters
 
@MartinBüttner Doesn't fit anywhere, but make it CW because we want to let it stick around anyway. This sounds like something else I know...
 
@NathanMerrill but 4x1 would look quite bloated... and we're already considering to expand by one character to allow 256 synchroniser and portal groups
@NathanMerrill I also think Sparr has already solved this
he wants to add an optional parsing mode where each cell is 2x2
 
Btw when was the last time someone asked a non challenge question? They've been awfully quiet
 
hmmm
that's not a bad idea
 
@Rainbolt I think it must have been the JS question I answered a while ago
 
1:15 PM
I like it
the marble goes on top?
 
@Rainbolt what is a non challenge question?
 
yes
@githubphagocyte tips/advice questions
 
what's this about allowing another character?
 
@NathanMerrill It's to allow more than 36 synchonizer/portal groups
 
@githubphagocyte Some time ago people used to create these giant list questions where ALL tips for golfing in a language would go. Now we expect questions just like every other site: specific, narrow enough to answer with a single answer, general enough to be useful to future visitors, and all that jazz. But we never actually get any of these questions.
2
 
1:18 PM
@NathanMerrill wanna come to the marble room?
 
yes
link?
 
I'm promoting marbelous :D
 
I get it now :)
 
1:29 PM
@Martin Nice; I'm on mobile and have to go soon but I'll try to vote tomorrow morning! /cc @overactor
 
@Doorknob See you
 
Oh, and what @Rainbolt said is spot on, and I would star it if mobile chat didn't make it such a pain -_-
 
@Doorknob Did it for you
 
2:09 PM
wow, only just noticed that @Geobits does specify what to print if there is no safe path for Blink - on the bright side, "0" is shorter than "No way out"
 
@VisualMelon I caught that in your answer, but I assumed you did it for kicks, or to look better. Since it cost you extra, I figured there was a reason :)
 
no, I'm just incapable of reading specs ;)
I'll fix it if I managed to get the byte count down a sensible amount, doesn't seem worth editing when it's blatantly fixable
 
2:42 PM
Meh.... I can't run the Dining Philosophers until I post at least one more scoreboard for Good v Evil. It would just feel like a cheap cop out where I rack up tons of rep and then ignore the challenge.
 
2:56 PM
@MartinBüttner I came up with a name for the Github repo for the King of the Hill framework/library/whatever it is we are making. What do you think of "Hill of the King"?
 
I like that :)
HotK
well
I don't like the acronym too much :D
but Hill of the King is great
 
Awesome :)
HK is short enough
And holy crap
It's my Dad's cow brand
 
@MartinBüttner How do I invite you to a repository?
 
settings, collaborators?
 
3:03 PM
@MartinBüttner username?
 
mbuettner
 
@MartinBüttner Do you need to be notified or did you just get the invitation?
 
I did
get notified
with an invitation
does that answer your question? I can't tell.
 
Sentences are hard. Yes.
 
3:40 PM
@overactor I guess it's time for a bounty on dogfight? not getting much attention otherwise :(
 
4:25 PM
so they released the richter magnitude of yesterday's earthquake -- 5.5
 
how far away was it?
 
@MartinB├╝ttner It was in Orkney, which is about a 3 hour drive
definitely felt it though
everybody's freaking out because we're not used to earthquakes xD
indonesia had a 6.1 just 5 hours ago, no news about that
 
(obligatory one-upper comment) Eh, I was an hour from Fukushima.
Seriously, though, where are you that people are freaking out about a 5.5?
 
@Geobits we're not near any tectonic plate edges...
 
@Geobits he's a three hour drive away from Orkney
 
4:39 PM
the 2 main theories atm are 1) a mine exploded 2) the continent is ripping apart
 
Ah, yea. I can see that, not much happening in the UK quakewise.
 
UK?
too many orkneys
 
Unless you're more specific, Orkney shows up in the UK when I google it... that's why I asked.
 
@Geobits I believe he meant this: en.wikipedia.org/wiki/Orkney,_North_West
 
@MartinB├╝ttner yup
 
4:42 PM
(and my comment was intentionally unspecific :P)
 
I used to live right next to it actually :I
 
Hmm, you are pretty far from a plate boundary. Interesting.
 
@MartinBüttner I saw your comment about using the Manufactoria esolang for my challenge.
 
I guess I could add two options for submissions: either using the actual game or the esolang
I was able to complete the challenge in the 13x13 grid.
 
4:53 PM
0
A: Proposed Question Sandbox - Mark XIV

GeobitsPaired Programming: Down Periscope! king-of-the-hill This is very basic for now, and lacks specific numbers as I flesh out the details and play with the speeds involved. I/O will be pretty basic, but it's not fully outlined yet. Four submarines are placed in an arena, two on each team. The...

2
 
@PhiNotPi hm interesting. Still I think it's discouraging for users if they have to be "good enough" to even participate.
 
Is the esolang the exact same as the game?
 
I never tried it, but I'd hope so
 
I think it handles conveyor crossings differently
 
4:57 PM
I was just looking at that.
 
@Geobits sounds like a good challenge! :)
although communication with arbitrary bots sounds hard
especially since there is no common information given to the team mates
 
Communications with subs is hard in general :p
 
well I meant that 16 byte message
 
The communication is there to use or not use as you see fit, really.
Of course, if you submit two entries...
 
there's no way to make the chance of a team mate decoding it higher than that of an opponent
 
5:00 PM
I was thinking of sending a team identifier with pings, but I'm unsure as of yet.
Like 0 for friendly ping, 1 for enemy.
 
I don't see how that helps
if I can't put some form of salt into the message which only my team mate knows
 
Hmm.
 
you could probably make that quite simple... a simple cypher with a 1-byte key known two both team mates
probably rather 2 bytes
anyway, the key should be large enough to not be decipherable with a single message, but possibly if you collect multiple messages
 
That's an interesting idea.
Even a simple ROT would probably work, since messages are naturally going to not conform to standard language letter frequency.
Or, use a checksum of your teammate's sub's name to encrypt it. Then the simplest way to decode it is to figure out who you're fighting :)
 
@Geobits I like that :)
in that case you might want to ask players to finalise their submissions
it would be really annoying if someone goes to the lengths of trying to fingerprint every single submission, and then they all make minor tweaks to thwart those attempts
 
5:12 PM
True, but I think fingerprinting might only work to a point.
 
why not let the programs allow their own encryption?
 
@NathanMerrill who would decrypt it?
 
the people listening
 
sorry, typo
 
How?
 
5:14 PM
but then how are the team mates better at it than the enemies?
 
To be clear, you can send any 16 bytes you want. If you encrypt it, so be it, although it won't be helpful to your teammate.
 
but if its encrypted, and your teammate is better than your enemies at decrypting
then he gets the message
 
@Geobits well if you're introducing the checksum of the team mates name as the key, then I think that makes fingerprinting an important component of gameplay.
@NathanMerrill But in another game your team mate will be your opponent. And your opponent your team mate.
 
Then it's pointless on average, right?
 
5:16 PM
In another game, even you might be your opponent.
 
@Geobits wat?
 
Well, if all pairwise teams are in a bracket, how could you avoid playing yourself if two teams you're on got near the top?
That's why teammates matter. You+A != You+B
 
ohhhh
I didn't read the tournament system careful enough
@NathanMerrill I think if the rules themselves don't give an advantage to intra-team communcation then there will be no advantage on average, regardless how clever a communication system you devise.
 
On that point, should communication even be there?
 
Geobits, why would you ever compete against yourself?
just declare yourself the winner
 
5:19 PM
It's not "you vs you", it's "you + alice vs you + bob".
You can't just declare one the winner.
 
I have another idea for a KotH challenge
 
oh, that's right
sorry
 
@Rainbolt go on, we're currently really lacking ideas. ;)
 
...you guys are?
 
You are in a tournament bracket. Every time you lose, your strength increases by 5 and you are out of the tournament. When you win, your strength decreases by 1. You can concede a match that you would otherwise have won. You have full knowledge of all standings and the strengths of other players. Repeat this process some number of times. You are scored based on wins.
 
5:22 PM
I'm not
I'm just trying to write code for my KoTH fast enough
 
@NathanMerrill no we aren't
 
ok good :P
 
Anyway time for lunch. Had to get that out of my system.
 
@Rainbolt I assume you win/lose based on strength, but how? Is it random if two players have the same strength (I'm guessing this is true at least for the start)?
Can both players concede? If so.... ?
 
5:46 PM
i yearn to play chess
eurgh i'm the most boring person ever ;_;
 
6:18 PM
i yearn for the game of life on non-regular grid to be reopened cause i finished my answer
i'm such an "overzealous user" ;_;
 
help them fix it then ;)
2
 
i dunno how :/
 
what's your score? :)
 
i dunno, i have like 10 instances constantly generating random states to try and find some interesting starting states
so "0"
 
The scoring there looks pretty arbitrary, imo. A spaceship gives 15, but then finding another distinct one is only another 15, for example, while I'm sure finding the second is more challenging. There's also no tiebreaker, unless I missed it.
 
6:27 PM
oh actually its like 15
@geobits up/downvotes could probably be the tiebreaker
 
Could, but that would probably just mean that it's down to a popularity contest, since most "serious" entries will try to max out the score.
 
@Geobits Highest strength wins. Ties broken randomly unless a concede is made.
 
Double concessions?
 
I don't know lol
One of them has to win in order to ascend the bracket
 
Unless you give the next opponent a bye, but that could cause a bit of confusion :)
 
6:30 PM
well the issue with the scoring is that i'm not entirely sure that for every tessellation pattern, you can find things that give points
 
But that's all technical details that I can work out later. Does the challenge seem interesting at all?
 
@Rainbolt It sounds interesting, yes. I'm just wondering if there's a provably-optimal strategy. It seems like there should be.
 
so maximizing points is probably going to be simulating a bunch of tessellations until you find a turing machine, which is boring :(
 
@Geobits I think that it's basically a max distance algorithm on a graph, which I have asked before but got only one answer.
 
@KevinL Agreed, boring, and crazy since the bonus is so high for it.
 
6:32 PM
And part of the reason I got only one answer is that it had to be optimal per the restrictions of the challenge
This way you could limit your search depth to 10-13 levels and do alright
 
@Rainbolt For a single bracket it probably is something like that. I'm not sure since you're repeating it starting at the bottom each time.
 
Ok, so maybe that is the search depth
 
Then again, the branching factor is crazy. Each match has several outcomes.
 
If I do this I am going make it a tennis themed challenge and add a rule that nobody except the author can use Rafael Nadal as the name of their submission.
 
So maybe there is something optimal, but it would take heat death to prove it.
Sounds like a good case for Monte Carlo.
 
7:03 PM
anybody here know haskell
 
@NathanMerrill i know about haskell
 
I'm trying to run the new entry
and its throwing an error
not sure who is at fault
 
What's the error?
 
7:23 PM
File name does match module name:
Saw: `Main'
Expected: `Pacman'
but in Pacman.hs, there is no Main
 
7:34 PM
here's marbelous calculating fibonacci(13) recursively:
https://gist.github.com/sparr/3a2933b8dc5b84a2d7ae
 
@Sparr THAT is a big gist.
 
it's a lot of recursion :p
 
1.6^n lots of recursion? :o
 
7:49 PM
This one is pretty -- but I can't reproduce it at all! Closest I can get is when the PPM is generated improperly (LSB instead of MSB) and even then it just looks like a variety of alpha-blended circles of different color. — DreamWarrior 6 mins ago
???
what is it with platform inconsistencies? ;_;
 
8:22 PM
I saw someone commit a file to github with windows newlines in it recently
:/
 
@Sparr Are you using a tool that can't handle Windows newlines?
 
I was
it might have been Python
 
You created a tool that can't handle Windows newlines?
 
no
Python was the tool
 
Python is a language...
 
8:26 PM
/usr/bin/python
(or wherever it lives right now)
 
You mean Python can't compile programs written with Windows newlines?
I'm really confused
 
python on osx, compiled with homebrew with the default options, does not recognize windows newlines
 
Probably because it just grabs the system newline and looks for that.
 
11
A: Handling \r\n vs \n newlines in python on Mac vs Windows

jonesyI guess it may depend on what you're reading from, but the built-in open() function takes a 'mode' parameter, and if you pass 'U' for the mode, Python will take care of the newlines in a cross-platform way transparently. It requires that Python be built with universal newline support, but test it...

(I admit to not having read it entirely, but it looked useful)
 
it's not just a python thing
I have to tell git to ignore the newline differences if I'm going to fork/contribute to the project
 
8:30 PM
Oh GitHub has an entire article on the subject: help.github.com/articles/dealing-with-line-endings
 
yep
in other news, here's a new version of my marbelous interpreter: gist.github.com/sparr/fb1105eecfbd5f8a6439
 
I'm learning GitHub so this is good to know. Especially since I work on Windows
 
@NathanMerrill I can help debug if you want
 
@Moop If you want
I understand the issue
aka, I understand what you are describing
 
8:46 PM
ok
letters = ['P' if len(self.square.players) > 1 else 'X']
seems not necessary
 
You actually shouldn't be getting a P at all
oh
that's legacy code
 
I see where
that's the right function
 
i get the 'P' on line 82
 
yeah
you were right
that was the code until becoming a ghost was possible
 
8:55 PM
i see
it seems like the code for connection squares together is too complicated
 
@NathanMerrill oh no, I've been bested at pacman! I need to make a pathfinding bot.
 
connecting*
 
I figured out the bug
at least 1
 
that's good
why do keep track of walls and not paths?
why do you*
 
why would I do it the other way?
 
9:01 PM
because then you can represent the playing field as a graph
that's what i do with ghostbuster
 
I've never considered it that way
 
walls are just edges that don't exist
i think doing it that way makes a lot of things easier
(not asking you to rewrite)
as long as it works
 
@PhiNotPi @MartinBüttner Yes, the language handles conveyor crossings differently. Instead of 4 different types of crossings, there is only one (#). It simply sends the robot in the direction it was moving when it reached the bridge. In the game, the bridge could send the robot back instead.
 
@sparr thanks for the some of the logic
 
9:16 PM
@Moop - random interruption - did you know you can edit a post for a few minutes after typing it? I was delighted to find this out...
 
@githubphagocyte Yeah, but only for 5 minutes. I missed the cutoff
 
Ah I see. Sorry for telling you old news then...
 
no worries!
@NathanMerrill what was the first bug?
 
back
self.direction doesn't update
 
also, line 71
while cur_square.is_connected_to(next_square, wraps=True) and cur_square!=first_square:
won't cur_square == first_square all the time?
since you set both of them to the self.square
i think you want
and next_square != first_square
 
9:54 PM
@githubphagocyte fixed the Hofstadter sequence answer!
I didn't even need the forward declarations for the second case, but without the new function names it still would have been too long
 
@MartinBüttner that's great - I'm off to look...
 
in fact it's amazing how many characters I've got left now
has anyone really made use of all three functions calling each other to produce some sick grayscale image?
 
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