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4:02 PM
@Dennis It is exactly the same, just a different way to write it. Wikipedia mentions that the / is an uncommon, yet alternative way to denote a "full-blown fraction". It also mentions that it appears in programming languages, but this is not by any means where this originates.
I guess if one was to be nit picky, we'd have to use a∕b instead of a/b :D
 
4:21 PM
Hm. Someone downvoted this answer
1
A: Find the syncopation

Sherlock9Python 3, 109 95 80 90 88 76 68 67 66 64 bytes Counts the number of qs and es and adds the index of the current q if the number of preceding es is odd. Edit: Now it prints a list of the indices of s that are q and have an odd number of es preceding them. Eight bytes saved thanks to Doorknob and...

 
So?
 
Well, I was thinking if I posted about it here, whoever it was would say why
But I suppose that's neither here nor there
 
> +1
> 0
 
@Sherlock9 That's... not going to happen. If somebody wants to let you know why he downvoted unupvoted your answer, he'll leave a comment.
5
 
Duly noted
@feersum Ah. I can't see upvote/downvote counts yet, so I thought I got -10 from downvoting
Thanks
 
4:25 PM
Also, the vast majority of PPCG users never enter this chat room. :P
 
You can only get -2 from downvoting
 
^ -10 is an unupvote, as you can see here: codegolf.stackexchange.com/users/47581/sherlock9?tab=reputation
 
Again, duly noted
 
@Sherlock9 There's a userscript to do that.
 
@Sherlock9 You can't? You only need 750 rep..
 
4:27 PM
@ self: ಠ_ಠ
 
,ಠ_ಠ,
 
I... welp, I didn't even try clicking on the vote count
,,ಠ_ಠ,, why
 
I used grep as the programming language on that question. Has anyone else done that?
 
@feersum You can't. You can only specify that as part of the standard library, so you should specify the Bourne shell as language.
 
@feersum Probably. Grep is capable of addition and primality testing, so it satisfies our definition of programming language.
 
4:30 PM
@zyabin101 grep isn't a coreutil I thought
 
Wait, scratch that.
 
@Dennis How?!?!?! O_O
 
How would you do addition is grep?
 
@zyabin101 Regex...
Regex can do primality testing
 
@Dennis grep . with unary I/O :P
 
4:32 PM
Yeah, it can do addition if you use unary I/O.
 
@quartata But can it subtract?
 
I guess... With -c, you even get decimal output, so ¯\_(ツ)_/¯.
@zyabin101 Have you read our definition of programming language?
 
@Dennis Link me to it.
Here's my attempt to subtract: s/ / / options here... wait, that's division by 2.
 
32
A: What are programming languages?

Peter TaylorMy previous answer was criticised for not drawing a line in a sand, so following some discussion on chat I propose a line. Executive Summary A purported programming language should be accepted as such if and only if it is capable of addition of natural numbers and primality testing of natural n...

 
Have we had a "find primitive roots of unity" challenge?
 
4:34 PM
@zyabin101 1. Grep cannot do replacements. 2. Subtraction is not required in the definition.
 
BTW: Here's the origin of the primality RegEx: montreal.pm.org/tech/neil_kandalgaonkar.shtml
 
You can do some crazy stuff with capture groups.
 
@mınxomaτ That's not the origin. It contains a link to what might be the origin, but the link is dead.
 
@Dennis Maybe archive.org has a backup
 
4:49 PM
0
Q: Inverse symbolic calculator

BobThis challenge is based on the idea of Plouffle's Inverter. Write a program in any programming language that do the following stuff: It takes as input a non-negative rational number X written in decimal, for example 34.147425 It returns a mathematical expression using only: non-negative intege...

 
Is there a haskellian here?
 
5:03 PM
looking for a french horn player
 
why? I sat next to french horn players for hours.
 
I have two questions for them
what's the typical range
and if I play a "C" on the french horn, is it a "C" on the piano?
 
These questions seem awfully googleable :P
 
they are
but the problem is that there are so many varieties
 
5:06 PM
@NathanMerrill music.stackexchange.com <-- this may help
 
its hard to know which kind of instrument they are talking about
 
As far as I know it is about 3 octaves, but good players might have a greater range.
 
@Doᴡɴɢᴏᴀᴛ Ninja'd me!
 
@Doᴡɴɢᴏᴀᴛ I just joined their chat :P
 
Considering the notes: Difficult to answer, I am not sure whether there really is a 'natural' scale, because frenchhornists are usually used to transposing (reading) any key.
Why do you need to know? Are you composing music?=)
 
5:09 PM
nah, I'm making a "what's the fingering for this note" challenge
 
Use the trumpet then as an example=)
IIRC french horns are often tuned in F
 
oh, I'm including the trumpet
that one was easy, as I play the trumpet
I'm doing trumpet, french horn, tuba, baritone, and bugle
 
Well then you should know these things better than I do^^
Sousaphone!
 
@Dennis Please pull new release of MATL from GitHub. I have removed three more functions in the online mode, for safety. Sorry that I didn't think of those initially. If you don't mind, I'll ping you again in a few days for another release with some new language features.
 
Hi @LuisMendo
 
5:15 PM
@LuisMendo Just pulled the update. Feel free to ping me whenever you need me to pull code. I don't mind at all.
@LuisMendo Btw, the link to the specs in your README.md is a 404. doc/ is missing from the URL.
 
aha, I finally found a good source
 
@Dennis Thanks!! I just checked. Access to those functions is indeed blocked
@flawr Hellooo!
 
Oh hey people!
 
Hi Mr Dragon
 
Hi Monsieur Reptile
 
5:20 PM
How does the air taste today?
 
@Dennis Thanks! Corrected
 
Less than optimal. Something must be done.
 
@CᴏɴᴏʀO'Bʀɪᴇɴ In what way less than optimal?
 
@flawr It tastes too... dirty.
 
Let it snow?
 
5:23 PM
This would fix it, indeed.
 
Does aparently filter the air.
 
Fascinating!
 
5:47 PM
Fatsinating
 
Mini-poll. FBLint good or bad idea?
0
A: Sandbox for Proposed Challenges

J AtkinImplement FBLint code-golf (FB, or Functional-Basic, as found here Interpret Functional-Basic) Task Implement a linting program for FB, similar to JSLint for javascript. TODO

 
6:02 PM
WHY DO I EVEN BOTHER?
17
 
Currently running my program that gets all words on dictionary.com
It's currently on the acco words
 
@NewSanboxPosts You shouldn't.
 
@JAtkin, you should define linting.
 
@NewSandboxedPosts Because you used to get thanked...
 
Finding basic syntax errors, type mismatch, ect...
Anything that would throw an error in a proper implantation of FB should be caught in the linting (except division by zero).
 
6:10 PM
@LegionMammal978 cool!
 
@LegionMammal978 I can't see your profile icon...
Or is it a white square?
3
 
@RikerW Maybe, maybe not...
Hehehehehe...
 
Don't be mean pls.
I can't see it even on your chat/PPCG account...
 
0
A: Implement a Truth-Machine

Cᴏɴᴏʀ O'BʀɪᴇɴJolf 0 Bytes I found out what to do with the zero-byte program! I made a truth machine. 0 as input 1 as input

 
I uploaded the program here
You need to import the HTML Agility Pack and System.Xml for it to work
 
6:14 PM
but I am not agile enough
to import the system...
 
@LegionMammal978 I just added some examples of error types.
 
6:40 PM
Fun fact: one of the most edited English Wikipedia entries of 2015 was "Geospatial summary of the High Peaks/Summits of the Juneau Ice Field". OBVIOUSLY.
 
6:51 PM
wat
@RikerW It's a white square.
 
If there was a page listing all of the top starred posts, New Sandboxed Posts would have the most
 
that's probably a feature
 
0
Q: Brass Fingerings

Nathan MerrillFor this challenge, you need to print out the fingerings for various brass instruments. The notes an instrument can play (as well as their fingerings) are listed below: Cornet Baritone Trumpet Bugle French Horn Euphonium Tuba A#1 ...

 
7:24 PM
the site is dead today :(
 
Hello
 
Hello
hi @El'endiaStarman
 
Hello Mr Star.
 
7:31 PM
hallo
 
How is twinkling going today?
 
It only just started. :P
At ~2:30 PM, no less.
...wait, that means I woke up almost exactly 12 hours after @Sherlock9. Ha!
 
....that was the shortest transcript between sleep and waking I've ever had to read.
 
Do you really always read the whole transcript?
 
7:39 PM
Usually, yes.
Sometimes I don't get to it for a day or so, but I do usually read it.
 
Does anyone here know a good file manager for windows??
 
"good" in what sense? I use Explorer...
 
I've tried copying a bunch of films to an external harddrive and the copy process is just dying every f*cking time.
 
Does copying one film work?
 
It did at least.
For the first few
 
7:43 PM
Does it fail on the same film every time?
 
No, I've tried multiple, it was able to copy some, but I see no pattern.
 
weird
Well, I don't know of any other file managers.
 
Do you use windows?
 
What filesystem is the hd?
 
7:44 PM
NTFS
 
I've never tried to copy multiple large files to an external hard drive, though.
 
I've tried to copy the entire C:\ drive to an external hard drive and had that not work, but that's kind of expected.
 
@CᴏɴᴏʀO'Bʀɪᴇɴ That seems to be complicated as heck
 
@flawr Does your HDD have enough power? Some external HDDs die when accessed repeatedly when they're only getting power over USB:
 
7:47 PM
I am trying to understand this line of Java. good &= N/2 == Long.bitCount((y ^ (y >>> row)) & mask)
so I can translate it to python
first... what does >>> do?
 
I have used a tool in the past (Clonezilla) that copies the whole file system from one hard drive to another (any extra space has to be turned into a partition), but that's overkill.
 
Well >> is bitshift.
 
logical shift right IIRC
 
@Lembik BitShift right.
 
thanks.. but what is >>> ?
 
7:47 PM
@Lembik Unsigned right shift
 
@feersum I'm not sure Java has that...
Lemme see
 
>> is signed right shift (unless I'm backwards)
Java has both for sure.
 
@feersum you're forward.
@mınxomaτ It is an usb3 without additional power supply. (Using an usp3 port)
 
aha.. "The value of n >>> s is n right-shifted s bit positions with zero-extension"
can you do that in python?
 
@flawr Really?
xcopy location path
 
7:49 PM
@flawr usp3? What if you try fedex4?
 
How do you use that for multiple files?
 
lol
46
A: <kbd> elements are way intrusive

Mr. AbeI totally agreeI totally agreeI totally agreeI totally agreeI totally agree I totally agree You know, I totally agree. You see, on my posts I'm never intrusive, that's why I never use <kbd></kbd> Though I always wanted to make an unpressable button. And, ladies and gentlemen, the nothing-butt...

 
hmm..
 
Are java's bitshifts wrapping or non-wrapping?
 
that's all I know
which is not much :)
 
7:51 PM
There is no builtin operator for bit rotation.
 
The JS version is apparently non-wrapping.
 
@SuperJedi224 Bitshifts in general are equivalent to integer multiplication (left shift) and division (right shift) by two.
 
@El'endiaStarman This is false for >> in C/Java.
 
I am just trying to translate codegolf.stackexchange.com/a/69524/9206 to python
with little luck so far :(
 
Golfical has builtins for both wrapping and non-wrapping versions.
 
7:53 PM
@feersum How so? Signdedness?
...what a weird (non)word. Signdedness.
 
@feersum it turns out my question contains an essential mathematical mystery within it :)
 
Because / always rounds towards zero.
 
Signedness? ...
 
@Lembik What do you mean?
 
@feersum it seems no one knows anything about n/2 by n circulant matrices. For example no one knows if there are an infinite number of them or why 16 by 32 is not possible.
there are no oeis entries.. etc.
it's all just unknown :)
 
7:56 PM
@CᴏɴᴏʀO'Bʀɪᴇɴ And now x-copy died...
 
@Lembik I don't understand the scoring on that question
 
You know I'd be already watching the second film by now
 
¡Hola!
 
@feersum oh.. can I explain?
@feersum your score is just how many distinct matrices you find
 
7:57 PM
You don't have to exhaustively search any particular n?
 
@feersum no you can do what you like
@feersum I tried to give maximum flexibility
 
And all row/column permutations of the same matrix count for antoher point?
 
@feersum only if they are still circulant
which they are unlikely to be
 
er I meant rotations
 
@feersum yes! That's the point of the lyndon words idea.. but it didn't quite work for me..probably because I was being stupid
you are counting distinct matrices of course.. you don't get to count the same matrix twice
 
8:01 PM
Regexs don't solve your problems: xkcd.com/1171 (totally random funny xkcd)
 
If you can the the Lyndon words idea to work then I think you can explore n=36 and get more points
 
@JAtkin *(totally random completely wrong xkcd)
ftfy
 
@feersum is it all clear now?
 
I think so
 
great!
 
8:07 PM
He has one problem only: perl
 
@SuperJedi224 What is it with you people and the Perl hate
 
it's very odd! I mean PPCG and perl seem like natural bedfellows :)
you could even code in Perl 6 to make it even more obscure :)
 
@Lembik Now Perl 6 I can understand hating.
I don't like it myself.
 
does it even exist?
 
But Perl in general is really good and does all sorts of things
@Lembik yes barely
 
8:09 PM
I mean I am reading the website
but as you say, it's not really real :)
 
It is, there are interpreters.
But they aren't "official"
 
I am not sure you can love pyth and hate perl can you ? :)
 
@CᴏɴᴏʀO'Bʀɪᴇɴ Is there any way to show the progress??
 
Only from file to file
 
the only thing I have against perl is the lack of perl answers to codegolf.stackexchange.com/questions/62095/… and codegolf.stackexchange.com/questions/62426/…
that's frankly disgraceful!!
:)
@quartata where were you when I needed you!
 
8:12 PM
@CᴏɴᴏʀO'Bʀɪᴇɴ I do not understand, can you elaborate?
 
@Lembik You can love or hate anything. The question is can you have a rational reason for loving or hating something.
The answer in this case is yes since Pyth and Perl are very different
Good Perl is pretty, good Pyth manages to still be ugly
 
@flawr It shows you when a file is done copying, no?
 
@quartata I gave you my rational explanation :) Is it really impossible to draw a point in a circle or move a sprite around the screen?
 
well you need tk obviously
 
@CᴏɴᴏʀO'Bʀɪᴇɴ Well It has been copying for quite a while now, considering that the file is under 1gb and it is an usb3 connection=)
 
8:15 PM
@flawr huh
 
If it finishes, I think you should see the command line again, right?
 
Dang GitHub, why you reject my sync :(
Oh, that's better :)
Dang RawGit, why you so slow :(
Oh, that's better :)
 
I hate RawGit sometimes :P
 
Dang Japt interpreter, why you not working :(
 
Hmm, it is working, just I must have changed something vital in a way that makes my program not work anymore
Which is likely, since I basically just rewrote one of the features from scratch
Oh, yep, I messed up the Array.prototype.m function
Bug fixed, commit pushed, now I just have to wait 5 minutes for RawGit to catch up :P
Whoa, that was fast :)
 
Oh look, a computerphile on code golf.
 
And no mention of PPCG, I've heard. :(
 
I wouldn't know. I really dislike computerphile in general (except that PostScript guy).
 
Heh. I stopped watching videos after the first few because I couldn't understand anyone.
Which is weird considering that I'm fine with Numberphile videos.
 
8:33 PM
@ETHproductions For me it fails quite often. Refuses to apply commits. In some cases it works manually (from command console). Else I have to delete everything
 
I like some things Tom Scott does (he appears on {number,computer}phile sometimes). His talk at London Digital are always well prepared.
 
wth?
String.prototype.q just stopped working for no reason at all
 
lol
@ETHproductions heisenbug.
 
-1
A: Pronoun operation

TanMathUnicorn! 6945 char/27393 bytes 🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄 🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄🦄...

 
@RikerW That's only if it's there when you're not looking and not there when you are.
 
8:37 PM
True.
 
Instead of splitting the string into chars, it now wraps it in an array. Interesting, but not at all useful.
 
Thankfully, they've been quite rare for me.
 
It is not funny?
 
I dislike Numberphile because one time my friend watched a video of it became convinced that there were 3 correct answers (-1, 0, and 1) to the sum of the series 1, -1, 1, -1, ... and got all pissed when I tried to explain that using that kind of bogus logic, you can "prove" that any integer is its sum.
 
^
 
8:39 PM
Oh duh, I forgot a return
facepalm
 
there is no sum!
 
@ETHproductions Ah-ha, there is a reason. :P ;)
@TanMath There is...depending on how you define "sum".
 
@ETHproductions for seemingly no reason
 
In mathematical analysis, Cesàro summation assigns values to some infinite sums that are not convergent in the usual sense, while coinciding with the standard sum if they are convergent. The Cesàro sum is defined as the limit of the arithmetic mean of the partial sums of the series. Cesàro summation is named for the Italian analyst Ernesto Cesàro (1859–1906). == DefinitionEdit == Let {an} be a sequence, and let be the kth partial sum of the series The series is called Cesàro summable, with Cesàro sum , if the average value of its partial sums tends to : In other words, the Cesàro sum of an...
iz gud
 
^ well this is stupid....
 
8:41 PM
^
Totally nonstandard definition of sum.
 
?
Well, yeah.
Hence "depending on how you define 'sum'"
 
Also depends on how you define "is".
 
Also depends on how you define "define"
 
Also depends on how you define "depends"
 
What do I mean by what do I mean?
 
8:43 PM
Axioms exist for a reason, guys.
 
@feersum I understand that there is no sum, but I think 0 is good enough.
 
@RikerW 4 is better.
 
@feersum def random():return 4
 
Aaaaaaaaaand RawGit goes back into "What commit?" mode :P
 
8:45 PM
@quartata Those last few sentences were pretty mind-twisting. :P
> What do I mean by 'do' and what do I do by 'mean'?
 
> And what do I do by do by do and what do I mean by wasting your time like this?
 
@quartata you mean that english is stupid.
 
Hooray, Japt now works again! \o/
 
Yay
:P
 
Do we have a bounty bot?
 
8:48 PM
Make another one pls.
:P
 
Yes.
Or at least we used to.
Yep we still do:
> Featured Questions - Programming Puzzles & Code Golf Stack Exchange posted by Newly Featured Questions
 
Well, it seems to be broken.
Oh, okay.
nvm
 
Well, I offered a bounty. Go get it. It defaults to Dennis in 7 days.
 
Related: my bounty expires in 2 days. Go get it too.
 
Shortest answer?
yuck
 
9:16 PM
@TanMath In a code golf competition, what is the point of taking an answer in one language and apply an encoding for the sole purpose or making it longer? On top of that, you haven't attributed the answer you encoded, in violation of our terms of service.
 
what's this?
 
what's what?
 
Bye for now.
 
Just wondering what Dennis was talking about. I am on mobile which for whatever reason does not show what his message was replying to
 
9:26 PM
@Dennis thanks for the downvote! I hope nobody else downvotes now because I am exactly 5 answer up votes from 1000!
 
...
4
 
@CᴏɴᴏʀO'Bʀɪᴇɴ No film today .... *sigh*
@GamrCorps Wanna see C++ in Minecraft.
 
9:42 PM
Are there any research papers on efficient porting between tape- and stack based (implementations of) algorithms?
 
@TanMath I'd appreciate it if you took this seriously. Answers that violate our terms of service are subject to removal.
4
 
@mınxomaτ that would be interesting
 
@flawr is that a thing??
 
I do not know, but I would be impressed!
 
lol yeah
 
9:47 PM
@Dennis well then, what is the point of Unicorn? Are you saying all Unicorn answers are disqualified for code golf?
 
yes
 
@TanMath I'm saying that all answers that contain code written by somebody else must contain proper attribution.
 
@Dennis I attributed.
 
by the wiki of code-golf tag, answers must be trying to golf
you are trying opposite
 
@Tanmath no that is a gross sweeping generalization. Unicorn answers that are mere translations of others peoples work are bad
 
9:49 PM
Ok...So Unicorn = not allowed...
 
Depending on the interpretation, Unicorn answers to code golf competitions might violate our competitiveness rule though.
 
lol ninjad
 
@Dennis super mega ninja'd?
 
Well then, I will no longer answer in Unicorn...
 
answer in unicorn to non code-golf tag if u may
 
9:51 PM
I think a meta post about this would be worthwhile. I've thought about posting it for some time now.
 
Ok...do you want to post it or should I post it?
 
Attribution or overly verbose esolangs?
 
@TanMath It's not just about Unicorn. I'll post it tonight.
 
Ok...go ahead.
@quartata overly verbose esolangs...
hahaha...so autocorrect says esolangs is Roland's...
rofl
 
@quartata Direct translations to another language for the sole purpose of making the score worse. If a language is naturally verbose, great. But Unicorn can be "golfed" to ES6, as Unary can be "golfed" to BrainFuck.
 
9:54 PM
I think a policy on languges that are translations of others would be good
 
0
Q: Risky Phone Plan

geokavelYou have a phone plan that lets you talk 180 minutes a day. Every day that you go over your daily limit you have to pay a fine of F = Men, where M is the number of minutes you went over and n is the number of days you have gone over (e.g if I went 20 minutes over the daily limit and it's my 2nd d...

 
wow literally read your mind but still ninjad
 
@Dennis but direct translations are fine? Like my Python answer to the same question?
 
@TanMath That's perfectly OK. There's no one-to-one correspondence between Python and ES6.
 
Ok...
 
9:57 PM
@Dennis I'm not sure exactly what your meta post will say, but I'm definitely in favor of allowing languages that have a 1 to 1 with a shorter language, but not in favor of using another person's submission, and then compiling it in your language
 
so, answers in Unicorn are completely valid
but I shouldn't unicornify another person's post
 
I think that should go without saying but evidently we need policies for common sense things now
 
@TanMath No, you mentioned the ES6 language, but not the pre-existing ES6 answer.
 

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