« first day (1892 days earlier)      last day (2954 days later) » 
00:00 - 02:0002:00 - 03:0003:00 - 04:0004:00 - 07:0007:00 - 14:0014:00 - 18:0018:00 - 20:0020:00 - 22:0022:00 - 00:00

El'endia Starman
El'endia Starman
7:00 AM
@Mego I'm amazed at how much detail the developers actually put into the game.
 
Anonymous
@El'endiaStarman It started as a jam game and then turned into the greatest April Fools not-prank of all time
 
New Main Posts
New Main Posts
0
Q: Make a Strawpoll

MaltysenStrawpolls are great, and we use them in chat all the time for getting opinions on things. But they're kinda annoying to make since you need a webbrowser to make them, and everyone knows that I access PPCG only through SE APIs and curl. So I want you to write some code that uses Strawpoll's API t...

code-golf internet
 
Katenkyo
Katenkyo
Hi guys! How is it going?
 
zyabin101
zyabin101
@Katenkyo o/
 
Maltysen
Maltysen
gnight all!
 
Katenkyo
Katenkyo
7:13 AM
@zyabin101 Oh, you're missing an arm, here take one of mine -> \
@Maltysen Good night!
 
Kenny Lau
Kenny Lau
@Maltysen How to de-memo-ize?
 
Katenkyo
Katenkyo
@KennyLau By cleaning the datas, but why would you need that?
 
Kenny Lau
Kenny Lau
How to?
Because y(7) returned False, but I made some change so that y(7) should return True, but it still returned False
because y is memoized
in Pyth
 
Quill
Quill
user image
3
 
Katenkyo
Katenkyo
@KennyLau If it isn't some code in prod, you could just restart the program (freeing all its memory)
Else, you could also do y[7]=nil (or an equivalent ;)) and force him to re-compute it
 
Kenny Lau
Kenny Lau
7:20 AM
like, pyth auto-memo-ize all my functions
 
Katenkyo
Katenkyo
@Quill Are you breakfasting? ^^
@KennyLau Hum... I don't think it does, or never heard of that
 
Kenny Lau
Kenny Lau
@Katenkyo Just click debug
I worked around that now, so it's not a problem now
but still
 
Katenkyo
Katenkyo
@KennyLau Can't help any further ragarding to pyth, was saying general things
 
Kenny Lau
Kenny Lau
oh ok
 
Quill
Quill
@Katenkyo It's 5pm here; bit late for breakfast
 
New Main Posts
New Main Posts
7:29 AM
3
Q: Help me sort my socks!

CarmeisterI have a pile of clean socks that I want to sort into pairs. Unfortunately, I can only take socks from either end of the pile, not the middle. Further, I can only remove socks from the pile a matching pair at a time. My strategy is to first split the pile into one or more smaller piles. I think s...

code-golf
 
Katenkyo
Katenkyo
@Quill hum forgot you were in... Australia if I recall?
 
Mars Ultor
Mars Ultor
@Katenkyo Yes
@Quill *5:30, 5pm is NT
 
Kenny Lau
Kenny Lau
anyone speaks pyth?
 
Katenkyo
Katenkyo
@KennyLau Harry Potter does
 
Kenny Lau
Kenny Lau
...
 
Mars Ultor
Mars Ultor
7:43 AM
brings up cheatsheet
@KennyLau kinda
 
Kenny Lau
Kenny Lau
let's say I want to write this
 
Mars Ultor
Mars Ultor
BTW, cheatsheet is here for future reference
 
Kenny Lau
Kenny Lau
def y(b):
 z = 0
 for ...:
  if ...:
   z += y(...)
 return z
this would need a local variable
but i can't find one.
at all
 
Mars Ultor
Mars Ultor
BTW, in chat, to format code just paste it in and do a Ctrl+K
Or just indent everything by four spaces
 
Kenny Lau
Kenny Lau
maybe i would need to work around it
 
Mars Ultor
Mars Ultor
7:47 AM
Also, z starts at 0, you can just do a sum
Do you have any more details
 
Kenny Lau
Kenny Lau
z must be local
look at the self-reference
 
Mars Ultor
Mars Ultor
@KennyLau ?
 
Kenny Lau
Kenny Lau
look at the self-reference
maybe i would need to workaround like this 
def y(b):
 return add_all(map(... if ... else 0 , ...))
 
Mars Ultor
Mars Ultor
Probably
 
Kenny Lau
Kenny Lau
so there's no local variable
*jots down in notes*
***testing***: testing
 
Mars Ultor
Mars Ultor
7:50 AM
Many languages have no variables
 
Kenny Lau
Kenny Lau
**testing**: testing
*testing*: testing
testing
 
Mars Ultor
Mars Ultor
ಠ_ಠ just read the markdown spec
 
Lembik
Lembik
hi @KennyLau
and all
 
Kenny Lau
Kenny Lau
hi @Lembik
 
Lembik
Lembik
if anyone can read and comment on meta.codegolf.stackexchange.com/questions/2140/… that would be great
@KennyLau thanks for looking at my sandboxed question.. is it all clear now?
 
Kenny Lau
Kenny Lau
7:56 AM
V all_chat_users p"hi"
do all of us here know how to do matrix product?
 
Lembik
Lembik
@KennyLau you mean by code?
or by hand?
 
Kenny Lau
Kenny Lau
by hand
 
Lembik
Lembik
I can't imagine everyone knows
 
Kenny Lau
Kenny Lau
then teach us there :p
 
Lembik
Lembik
 
Kenny Lau
Kenny Lau
7:59 AM
nice
 
Lembik
Lembik
added
@KennyLau one issue with my question is that I don't specify how the input should be given
any suggestions there?
 
Katenkyo
Katenkyo
@Lembik This type of math is generally teached to you when yo'ure around 18, so our younger members should not know it^^
 
Lembik
Lembik
@Katenkyo makes sense. Hopefully my link will help
or they can google :)
@Katenkyo any suggestions for how I should specify the input?
 
Mars Ultor
Mars Ultor
@Katenkyo Wait seriously?
 
Katenkyo
Katenkyo
@Lembik The fact that it is linked to a specific domain (electronics) can't really help the one who read it to go in and thinks he's gonna be ok with it ^^
 
Mars Ultor
Mars Ultor
8:02 AM
thought it was only senior high level
 
Katenkyo
Katenkyo
Try to find an exemple unrelated to a specific field
 
Lembik
Lembik
@Katenkyo ok
 
Katenkyo
Katenkyo
@MarsUltor And how old are you when you're in senior high? should be 17-18 right?
 
Mars Ultor
Mars Ultor
In Australia it's 15-17
 
Lembik
Lembik
@Katenkyo how about this new link?
gcseguide.co.uk/matrices.htm 14-16 in the UK it seems
 
Katenkyo
Katenkyo
8:05 AM
@Lembik the input is fine that way
@MarsUltor I though youw ere speaking about the last hyear only. But Yes, depending on your field, you won't learn it until the last year of high, or the first year after
I learned it at 15-16 because I was studying mechanics and electronics, but I know lots of people who didn't know what a matrix was when I was in my first year of IT (high +1 year)
 
Lembik
Lembik
@Katenkyo sorry I don't quite follow. What do you mean the input is fine? I don't specify it yet
and is the new matrix-vector product link ok?
 
Katenkyo
Katenkyo
@Lembik Your examples shows what it is ^^
I'm reading it
@Lembik Perfectly fine!
 
Lembik
Lembik
the thing is that I need to test the code. So I suppose the code needs to take some standard input format so I can do that
@Katenkyo thanks :)
also.. does anyone want to actually try it out quickly.. please
hi @MartinBüttner
 
Katenkyo
Katenkyo
@Lembik allowing all type of 2D arrays as input, weither it is by a parameter or a string should be ok
 
Lembik
Lembik
@Katenkyo how would I test that code?
 
Katenkyo
Katenkyo
8:10 AM
the format [[0,1],[2,3]] would be standard
 
Lembik
Lembik
ok
that isn't actually the format in the question
if you look closely
I should edit it to make it that
 
Katenkyo
Katenkyo
Also, maybe the fastest-code could fit?
Submissions are ranked upon how fast they can be
 
Lembik
Lembik
input format editted
the score is the largest n you can get to in less than 30 seconds
@Mego I would love a critical eye on meta.codegolf.stackexchange.com/a/8872/9206 please
 
Katenkyo
Katenkyo
@Lembik This is ranking them on how fast they are ^^'. Gonna read the tag wiki to see if fastest-code is only for complexity ranking
 
Lembik
Lembik
@Katenkyo ok thanks
 
Katenkyo
Katenkyo
8:17 AM
@lembik As long as you use the same set of input for everyone, you could use fasteset-code
 
Lembik
Lembik
@Katenkyo thanks
are fastest-code and code-challenge mutually exclusive?
that is can you have both?
 
Mars Ultor
Mars Ultor
@Lembik code-challenge means isn't any other category IIRC
 
Kenny Lau
Kenny Lau
"A code challenge is a competition for creative ways to solve a programming puzzle with an objective winning criterion not covered by other scoring tags (e.g. code-golf). "
 
Lembik
Lembik
I clarified the input format
ok.. I just need one person to write some code to try it out please
then I will post it
 
Mars Ultor
Mars Ultor
@Lembik Argh horrible formatting
 
Kenny Lau
Kenny Lau
8:27 AM
Guys
Should I learn 05AB1E?
 
Mars Ultor
Mars Ultor
@Lembik (I mean I think you should turn the declaration of P and the expected result into code blocks)
@KennyLau Learn any language you want to
 
Kenny Lau
Kenny Lau
i mean
would you recommend me to
 
Optimizer
Optimizer
yes
 
Kenny Lau
Kenny Lau
cool
 
Lembik
Lembik
9:22 AM
@MarsUltor better?
hi @Optimizer
 
Mars Ultor
Mars Ultor
@Lembik Yeah
 
Lembik
Lembik
@MarsUltor hooray. Any other problems please let me know
or if you would like to try it out, even better!
 
Mars Ultor
Mars Ultor
@Lembik I have no idea what you're supposed to do though
You may want to LaTex-ify sum(exp(-x^T P x), x in Z^n)
 
Lembik
Lembik
@MarsUltor that's a bad sign!
@MarsUltor LaTeX-fied. I didn't know how to center it
better?
@MarsUltor could I try to explain to you what needs to be done maybe and that will help me add explanation to the question
 
Mars Ultor
Mars Ultor
9:41 AM
looks again
Oh, that's a transpose
 
Lembik
Lembik
yes!
 
Mars Ultor
Mars Ultor
How are you supposed to calculate the infinite sum?
 
Lembik
Lembik
@MarsUltor it only needs to be accurate to 5 decimal places
 
Mars Ultor
Mars Ultor
how does it even converge
 
Lembik
Lembik
it converges because almost all the terms in the sum are tiny
and they decrease exponentially in size as the terms in x get big
so one naive way is just to try vectors x with small elements in absolute value
e.g. -1, 0, 1
@MarsUltor does that make sense?
 
Mars Ultor
Mars Ultor
9:46 AM
Yes
 
Lembik
Lembik
great!
is Mars Ultor something I should know about?
@MarsUltor have you done much math?
 
Mars Ultor
Mars Ultor
@Lembik Yes
 
Lembik
Lembik
10:03 AM
thanks :)
 
zyabin101
zyabin101
I had to reset my beloved Firefox. Mom broke it ;(
 
Lembik
Lembik
@zyabin101 they do that :)
anyone know what time of day the math ppcg users arrive?
unless some are already here of course
hi @feersum
 
zyabin101
zyabin101
@Lembik Which math PPCG users?
 
Lembik
Lembik
@zyabin101 some people on ppcg are really good at math
I am hoping for comments on my sandboxed challenge
 
zyabin101
zyabin101
@Lembik Which ones, exactly?
 
Lembik
Lembik
10:13 AM
@zyabin101 I think xnor, feersum and maybe others
 
zyabin101
zyabin101
@Lembik Let me do a transcript lookup.
 
Mars Ultor
Mars Ultor
But
this is simple math
the optimization is more important
> correct to at least 5 decimal places
^ That's probably gonna be the biggest obstacle in optimization (doing as few calculations as possible)
 
Lembik
Lembik
thanks!
 
New Sandboxed Posts
New Sandboxed Posts
0
A: Sandbox for Proposed Challenges

Kevin CruijssenGym Exercise Let's do an exercise together, shall we? Simply follow the movements of the stickman. What stickman you ask? The one we are about to create! Make a program that outputs the following nine stick-figures with an interval in between: @ \@/ |@_ \@/ _@| @/ |@| \@ \@/ /|\ | | |...

 
Mars Ultor
Mars Ultor
@zyabin101 No, just go on the info screen
Maybe not
 
Lembik
Lembik
10:20 AM
can you see any reason why I shouldn't pose the question now?
 
Mars Ultor
Mars Ultor
@Lembik ?
 
Lembik
Lembik
there was a typo :)
 
Mars Ultor
Mars Ultor
feersum hasn't talked in chat for 6 days
 
Lembik
Lembik
I mean move the sandboxed question to main
@MarsUltor thanks
 
Mars Ultor
Mars Ultor
xnor has a spike in activity in ~3 hours, but he's online for the longest in ~15 hours
 
Lembik
Lembik
10:21 AM
@MarsUltor aha!
hi @xnor .. when you arrive I would be grateful if you could take a look at meta.codegolf.stackexchange.com/a/8872/9206
what time zone does that put him/her on?
 
Mars Ultor
Mars Ultor
@Lembik America, my guess EST
 
Lembik
Lembik
@MarsUltor good point
 
Mars Ultor
Mars Ultor
(Assuming they're active for the longest starting at 5pm)
 
feersum
feersum
@Lembik What's up?
 
Lembik
Lembik
@feersum I was hoping you might take a look at meta.codegolf.stackexchange.com/a/8872/9206 please
my last question has -3 so I am trying to avoid that :)
 
Kenny Lau
Kenny Lau
10:31 AM
What do we do when we moved a sandbox question to the main?
Keep it in the sandbox?
 
Mars Ultor
Mars Ultor
@KennyLau Delete it
 
Kenny Lau
Kenny Lau
I see
Then why is there 917 answers?
 
feersum
feersum
@Lembik I can't tell at a glance how computationally expensive it is (whether enough for fastest code)
How did you generate the examples?
 
Lembik
Lembik
@feersum I have written code myself and it is very slow when n gets to 9 or 10
@feersum what I actually did is create random matrix M with -1, 1 entries and then computed I + M^T M which we know is positive definite
@feersum I wasn't sure which tag was right.. do you think fastest code?
 
feersum
feersum
As opposed to what?
 
Lembik
Lembik
10:35 AM
@feersum code-challenge
I guess fastest-code.. let me change that
 
Mars Ultor
Mars Ultor
@KennyLau A lot are abandoned
 
Kenny Lau
Kenny Lau
...
such fate
 
Lembik
Lembik
@feersum does it look ok as it is ?
 
Mars Ultor
Mars Ultor
@Lembik is e normal exponential or 1x1 matrix exponential?
 
Lembik
Lembik
@MarsUltor oh I don't quite understand that question . e is a number around 2.7
@MarsUltor normal exponential
the exponent is a just a number remember
so it's just e^y where y is a number
 
feersum
feersum
10:43 AM
@Lembik As far as I can tell
 
Lembik
Lembik
@feersum great! Thanks
I will be very impressed if anyone gets to 12.. but then I am often impressed by ppcg people
 
Mars Ultor
Mars Ultor
(doesn't make a difference, but probably good to clarify)
@Lembik Dennis almost certainly will
 
Lembik
Lembik
@MarsUltor I look forward to it!
just added the rules for a tie.. someone always asks that
 
zyabin101
zyabin101
^ I made a handicap system.
Currently it only has Pyth, but soon it will include other langs as well.
 
ven
ven
ahoy
 
muddyfish
muddyfish
10:51 AM
It seems pop-cons have come out of favor. Is this considered a bad question now?
 
Lembik
Lembik
@muddyfish I like good pop-cons but I might be in the minority
 
zyabin101
zyabin101
@ven Arrr!
 
Lembik
Lembik
hi @ven
 
zyabin101
zyabin101
I found codegolf while viewing the Sandbox. Someone should synonymise codegolf to code-golf.
 
trichoplax
trichoplax
@zyabin101 Maybe suggest that in a meta post?
 
Doorknob
Doorknob
11:01 AM
Well, the tag doesn't exist, so...
@El'endiaStarman That's what the point of the meta post was, though: that should change.
 
trichoplax
trichoplax
Oh - if it's only in the Sandbox, could it just be edited by hand?
 
zyabin101
zyabin101
@Doorknob Someone can tag a question codegolf by forgetting the hyphen, then anyone with enough rep to synonymise tags would connect it to code-golf.
 
Doorknob
Doorknob
@zyabin101 Except that's never happened, ever. So why would you expect it to happen?
 
trichoplax
trichoplax
There are 25 results in the sandbox:
 
muddyfish
muddyfish
just retag them
or leave them if theyre too old
 
Doorknob
Doorknob
11:04 AM
@trichoplax none of those are tags
 
zyabin101
zyabin101
@Doorknob Uhh...
 
Lembik
Lembik
hello high rep people.. would you be able to take a look at meta.codegolf.stackexchange.com/questions/2140/… please? I am thinking of posting it in a couple of hours
 
muddyfish
muddyfish
You're not asking us to clear the screen between frames are you?
or replace chars
 
trichoplax
trichoplax
@Doorknob I tried searching for tag:codegolf and got zero results, which made me hope there were none, but tag:code-golf also returns zero results. Some of the 25 results for codegolf are instances of [tag:codegolf] in the wording (not real tags but I might tidy up the recent ones anyway).
 
Doorknob
Doorknob
@trichoplax well, that's just laziness. In practice, given tag autocompletion and the rep requirement for creating tags, that wouldn't appear in the main site post.
 
feersum
feersum
11:10 AM
We would be prudent to shut down the site until we can figure out how all spelling errors can be prevented.
 
trichoplax
trichoplax
@Doorknob True - I'm not at all worried about them finding their way onto main as actual tags. It's just that if you want to view all code-golf sandbox posts these ones won't show up in the results. Very minor problem...
 
Doorknob
Doorknob
@feersum ALL of them!
 
Mars Ultor
Mars Ultor
@feersum jQuery
Well, it probably needs a userscript
 
zyabin101
zyabin101
@feersum That one Ctrl-Enter thing...
 
trichoplax
trichoplax
@Doorknob Turns out only 1 is recent enough to seem worth changing. I now feel I have accomplished a negligible improvement to the sandbox. Yay!
 
Doorknob
Doorknob
11:15 AM
@trichoplax \o/
 
trichoplax
trichoplax
:)
 
zyabin101
zyabin101
We could make a Stack App that works like: select spelling error, press Ctrl-Enter, and compose a meta question using the tool that appears.
 
trichoplax
trichoplax
Let's call that plan Z...
 
zyabin101
zyabin101
Or a comment, if the selection is in the question content. Or even an edit (if enough rep).
 
mIllIbyte
mIllIbyte
Hi, I have a question - I posted a question in the sandbox yesterday, and received an upvote and some comments. When can I post it on the main site?
 
trichoplax
trichoplax
11:23 AM
@Lembik If you have any more MathJax figures in future challenges, you might find mathurl.com useful.
 
Mars Ultor
Mars Ultor
@mIllIbyte If you've fixed any issues mentioned in the comments, you should be okay.
 
zyabin101
zyabin101
\o/
 
mIllIbyte
mIllIbyte
@MarsUltor - Thank you
 
trichoplax
trichoplax
@Lembik Will the time taken vary significantly for matrices of the same size but different values? If so it might be worth specifying how many matrices of a given size will be tested, and whether the best or worst or average time will be used to determine if under 30 seconds is achieved.
 
New Main Posts
New Main Posts
11:41 AM
0
Q: Stretch the word

mIllIbyteThe input is a word of lowercase letters not separated by whitespace. A newline at the end is optional. The same word must be output in a modified version: For each character, double it the second time it appears in the original word, triple it the third time etc. Example input: bonobo Examp...

code-golf
 
zyabin101
zyabin101
11:52 AM
@NewMainPosts It's only nine minutes and zero upvotes. Well done!
(9 / 0 = complex infinity) 
Mars Ultor is in rooms:
2016 Programming Puzzles & Code Golf Moderator Election
Cheddar
Jelly
Pytek
SOX (originally SOOF)
The Quest for Tetris
Arcturus
AvocadOS
Esoteric Programming Languages
The Nineteenth Byte
The 2nd Monitor
The Nth Monitor
VSDiagnostics
@MarsUltor That's a lot.
 
Mars Ultor
Mars Ultor
@zyabin101 Fixed.
 
Lembik
Lembik
12:06 PM
@trichoplax Thanks!
@trichoplax Isn't that dealt with at "our score is simply the size of the largest matrix for which I get a correct answer in less than 30 seconds when averaged over 5 runs." ?
I edited it to make it a little clearer
posted
 
trichoplax
trichoplax
@Lembik I just wasn't sure if you were going to use more than one of each size
 
Lembik
Lembik
@trichoplax I hope I made that clear now
thanks for reading the question
I hope some people come up with good answers now!
 
trichoplax
trichoplax
@Lembik Yes the edit makes it crystal clear
 
Lembik
Lembik
@trichoplax great!
now I get to bet myself with what number will get up to :)
I am going for 11
 
trichoplax
trichoplax
I couldn't guess...
 
Lembik
Lembik
12:17 PM
I am usually wrong :)
 
trichoplax
trichoplax
Good luck!
 
Lembik
Lembik
thanks
added math tag
 
TimmyD
TimmyD
Woo, got my first gold badge awarded yesterday.
 
Lembik
Lembik
woohoo :)
 
ven
ven
GG
 
New Main Posts
New Main Posts
12:20 PM
0
Q: A tricky infinite sum

LembikThis challenge is write fast code that can perform a computationally difficult infinite sum. Input An n by n matrix P with integer entries that are smaller than 20 in absolute value. When testing I am happy to provide input to your code in any sensible format your code wants. The default will b...

math fastest-code
 
zyabin101
zyabin101
It is enabled on all repos by default now.
 
zyabin101
zyabin101
12:34 PM
What is the fastest way to find all of the feed bots' jokes?
 
feersum
feersum
@Lembik One issue I didn't think of before - "correct to 5 decimal places" isn't a good way to specify precision
 
Lembik
Lembik
@feersum oh.. can you explain?
 
feersum
feersum
Since it could require calculating arbitrarily many places, e.g. if the answer was .4999999 and you wanted to calculate 1 decimal place
Sorry bad example
 
Lembik
Lembik
you did confuse me :)
 
feersum
feersum
I meant like .4500001
Is it .4 or .5?
 
Lembik
Lembik
12:41 PM
isn't 0.45 correct up to 5 decimal places in that example?
 
feersum
feersum
Try to be a little less dense guys
 
Mars Ultor
Mars Ultor
@feersum ?
 
feersum
feersum
What I mean is, you don't know the answer until you've calculated 7 places.
 
Mars Ultor
Mars Ultor
@feersum No, .450000 == .45
 
feersum
feersum
I wasn't literally asking if it's .4 or .5.
 
Mars Ultor
Mars Ultor
12:42 PM
@QPaysTaxes No
.4500001 rounds to .45
 
Lembik
Lembik
@feersum you don't know your answer is correct up to 5 decimal places until you have computed it to 6
 
Mars Ultor
Mars Ultor
What's the difference?
^^
 
Lembik
Lembik
that is true.. is that the problem you see?
 
feersum
feersum
@Lembik The point is, you don't know it is accurate to 1 decimal place
 
Mars Ultor
Mars Ultor
You only need n+1 digits for n digits precision
@feersum Why not?
 
Lembik
Lembik
12:44 PM
@feersum I think I am being dense, sorry. Is .4500001 a good example for what you are talking about?
 
feersum
feersum
@Lembik Anyway, the right way to specify it is to have a maximum error
e.g. the calculation must differ by no more than 5e-6 from the true answer.
 
Lembik
Lembik
I don't mind changing it to that
 
feersum
feersum
@Lembik yes .450001 is the fixed example
 
Mars Ultor
Mars Ultor
@feersum There is nothing wrong about saying '5 digits precision' though.
 
feersum
feersum
@MarsUltor There is.
 
Mars Ultor
Mars Ultor
12:45 PM
@feersum How?
 
feersum
feersum
If I ask you to calculate 1 decimal place
 
Lembik
Lembik
@feersum in the .450001 I still don't see the problem. The only correct answer up to 5 decimal places is 0.45000
 
feersum
feersum
and you know the answer is .450000 +/- 1e-6
Then you don't know the 1st decimal place.
 
Lembik
Lembik
ok I see that problem
 
feersum
feersum
@Lembik My example is asking for 1 place not 5.
 
Mars Ultor
Mars Ultor
12:46 PM
@feersum Hmm, okay
 
Lembik
Lembik
@feersum ok.. your point is clear now. thank you
changed the question and made it less accurate at the same time
5 might have been too much
of course now you are morally obliged to provide an answer :)
or at least upvote the question!
I wonder why no votes...
 
zyabin101
zyabin101
There should be an automatic leaderboard for fastest-code challenges.
 
Lembik
Lembik
@zyabin101 that would be good
the problem is that I have to run the code
as otherwise there is no fair comparison
and we don't have a ppcg online compute account yet :)
@zyabin101 but first there should be some code to run!
an upvote! Thank you
@feersum thank you for pointing out that difficulty by the way
 
mınxomaτ
mınxomaτ
@Lembik Just create a GitHub repo where everyone can add their code and run it using a CI (Travis, AppVeyor etc.). Each push and PR is built automatically and the timing results are in the Log.
You don't need a server or PC and it's free and fast. Plus, all prerequisites someone needs can be installed automatically.
 
Lembik
Lembik
1:08 PM
Wow!
 
Mars Ultor
Mars Ultor
But sometimes it may not be accurate enough
 
mınxomaτ
mınxomaτ
1:27 PM
I've been able to measure down to 1ms accuracy in the new Precise worker with Travis. Of course, as with any timing, there have to be enough test runs to make the difference significant (and in fact measurable). It doesn't matter if a new worker is faster or slower, it always has the same architecture, thus all programs will run slower or faster. After all, the relative times count (an objectively faster program always wins against a slower one, given enough test runs).
The actual time resolution in workers is much lower than 1ms, but I didn't test it.
 
Lembik
Lembik
1:44 PM
who pays for the cpu time?
 
Mars Ultor
Mars Ultor
Enterprise users
 
Lembik
Lembik
how much free cpu time do you get
is there a number of cpu hours?
 
zyabin101
zyabin101
@Lembik Travis gives 40 minutes per one build in a build matrix.
 
Lembik
Lembik
and you are allowed to run your code and not just compile it with travis?
I don't know the system at all
 
zyabin101
zyabin101
1:59 PM
@Lembik Uhh... docs.travis-ci.com
 
00:00 - 02:0002:00 - 03:0003:00 - 04:0004:00 - 07:0007:00 - 14:0014:00 - 18:0018:00 - 20:0020:00 - 22:0022:00 - 00:00

« first day (1892 days earlier)      last day (2954 days later) »