The Nineteenth Byte

Geobits

3:01 PM

I knew it sounded familiar, but Google failed me ><

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Lol XD

André Muta

How do I say something is a sequence of a time series? Like, I have a vector v(2,5,7,4,6), how can I explain the elements are successive measurements?

Geobits

Showing an example graph would do the trick for sure.

André Muta

Understood

flawr

PS: Can anyone recommend an online interpreter for perl? (Where you could pass arguments on call.)

quartata

3:12 PM

I've been looking all over for a good one, haven't really found one...

ideone has Perl support but you can't specify command line arguments which really sucks

Sven The Surfer

@Geobits The query

manhattan addition -city -school -dog -crossword -office -image -forum -leasing -schultz -neratoff -beer -eaton -beach -thrilled -library -"construction projects"

has his post on the second page at the bottom. I don't blame you.

flawr

@quartata I am trying to run this submission.

Geobits

@SvenTheSurfer Needs more specificity. First page or it doesn't count :P

Sven The Surfer

I tried!

The post kept getting eaten up by things like -drug

Geobits

Yea, you should never subtract drugs, only add them.

2

Sven The Surfer

3:16 PM

Ahh silly me.

feersum

@flawr I think you can put in use 5.10.0; at the beginning and then hard-code the number

quartata

So wait, is Dyalog APL considered to be a different dialect from traditional APL?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

^

flawr

@feersum Thanks, it works!

feersum

(:

In some areas, there are APL interpreters only 20 miles apart whose codes are mutually unintelligible.

Zgarb

3:23 PM

@quartata Yes, it adds new syntax stolen from J, among other things.

Martin Büttner

o.O Stack Cats is a palindrome... how has @Calvin'sHobbies not yet made a challenge about that?

5

VTCAKAVSMoACE

I think the key word in that sentence is "yet".

feersum

pet stack cat step?

Geobits

You could also stab bats.

Sp3000

I'm still waiting for the one about a llama mall

hi fives feersum

Martin Büttner

3:31 PM

:D

there's also the good ol' Taco Cat

Geobits

Do geese see God?

flawr

@Geobits Why wouldn't they?

Geobits

Well I never have. What makes geese so special? @AlexA.?

Martin Büttner

@AlexA. Do they?

flawr

Martin Büttner

3:33 PM

that went really well

pastebin?

ideone link?

flawr

Oh, it seems chat.SE does not like pearl.

Martin Büttner

@flawr no, markdown doesn't work in multiline messages

flawr

But it was just one line?

Martin Büttner

(except block indenting or quoting the entire thing)

DankMemes

Have you guys heard about the brotli extension thing?

Martin Büttner

3:35 PM

@flawr "Even if you do not like drugs" seems to be in the same messages.

Geobits

Wow, nice labyrinth. Will keep minotaur entertained for a while.

flawr

pastebin.com/FSBkfBqs

quartata

@Zgarb I see

I mostly was interested in Dyalog since Alex said that certain character combinations would turn into the symbols in its editor.

I want to learn APL but I'm just annoyed by the symbols really

Sven The Surfer

They can't be much different than the alphabet. Either you'll get used to them, or go insane trying.

Zgarb

I just point and click at tryapl.org, it's annoying but works.

quartata

3:41 PM

@SvenTheSurfer That's not the problem. Typing them is the problem

@Zgarb This is probably what I'll do

Sven The Surfer

Get a dedicated APL keyboard

Zgarb

@quartata If you only use APL for golfing like I do, you won't have to write anything too long either. :P

quartata

Right now I'm just trying to make this string printer I thought of in APL

I might try to golf in it though

DankMemes

Y u no just use alt codes

Geobits

Alt codes are fine — for one or two symbols. For a few dozen, it's difficult to remember them all quicker than just clicking.

Zgarb

3:45 PM

String processing in APL is a pain.

quartata

Wait Dyalog is shareware

Ewwwww

Geobits

Spoken like someone who didn't have a computer in the 90s :)

André Muta

Can you guys help me improving this challenge?

Anything is welcome

1

A: Sandbox for Proposed Challenges

Time Series Analysis Time series analysis comprises methods for analyzing time series data in order to extract meaningful statistics and other characteristics of the data (from here). The challenge Write a program or function that take a time series vector ts and output a the coefficient of de...

Geobits

1) Is there a reason input needs to be in that exact form? 2) When I said add a graph, I meant one that represented the example inputs, so people could easily see the relationship between them.

André Muta

1) No particular reason, but I dont know how to specify it, I've got some problems with not specifying it on the Area of Triangle challenge

2) Shame on me, that is really better.

Geobits

3:54 PM

For most challenges, a good default is "a reasonable format" which might be a separated string, a native array or list, or even separate arguments. This way it's up to the user/language, and they can choose which would be best for the task.

That way you also don't have to be overly specific ;)

André Muta

I will use that, thank you!

changed the graphs and the input default

VTCAKAVSMoACE

So... I've decided not to start learning TSQL today. o-o Calculus beckons.

Geobits

Relevant to past chat topics

VTCAKAVSMoACE

Uh. Wut?

Sp3000

@randomra Nice work :)

randomra

4:04 PM

@Sp3000 thanks

Sp3000

Just posted a comment

randomra

@Sp3000 ah, I had no faith in equal

Sp3000

Basically if you did the maths (or random guessing) to find the char you needed to get the right number, then that's fine :)

btw I was going to put r in there for extra fun, but I thought it'd be interesting enough as is :)

Geobits

Life tip (@flawr) : smbc-comics.com/index.php?id=892

New Main Posts

4:27 PM

0

Q: Naming non-cyclic carbon chains

(I'm not a chemist! I might be wrong at some stuff, I'm writing that I've learned in high-school) Carbon atoms have a special attribute: They can bind to 4 other atoms (which is not that special) and they stay stable even in long chains. Because they can be chained, we need some kind of naming c...

Rainbolt

4:56 PM

Looks like my my coworkers aren't the only devs that like to say "It's not a bug. Here, we'll make it more obvious."

It's a lie anyway. There is at least one time somewhere in the universe that is not UTC.

Geobits

You misunderstand. It says "all times are Unfortunately Temporary Constructs".

New Main Posts

5:15 PM

0

Q: Calculate Standard Deviation

Challenge Given a set of numbers, calculate the standard deviation of the set. Use the following equation to calculate standard deviation: Input The input will be a string: a list of numbers separated by commas. For example: 56,54,89,87 The numbers will always be integers. Input will be...

code-golf

Martin Büttner

@BetaDecay "The output will be a number rounded to a precision of three decimal points" so do you actually want us to output a string with exactly three decimal places? or can the output be a number as long as it's correct to 3 decimal places? also 3 decimal places is a pretty tough requirement if there is no input range. 5 significant digits might be fairer.

Geobits

Std dev is one of the operations here, fyi:

3

Q: Operations with Lists

Inspired by this question. Given a list containing numbers, print: The sum and product of the numbers in the list The average and median The differences between each term in the list (e.x. [1,2,3] -> [1,1]: 1+1=2, 2+1=3) The list, sorted ascending The minimum and maximum of the list The standa...

code-golf math array-manipulation

Martin Büttner

yeah I found that too

Geobits

It's old and contains other things, but just throwing it out there.

Martin Büttner

convinces me more and more that "multiple unrelated tasks in a single challenge" is a bad idea

Geobits

5:21 PM

Yep

Martin Büttner

although to be fair that one isn't too bad. it's probably possible to reuse some code between the tasks

implementing several related things in a single program can be interesting, because some shared computations might allow for additional golfitude.

e.g. this codegolf.stackexchange.com/q/37217/8478 (ignoring the fact that it's then also wrapped in rosetta code)

Geobits

Sure. It just then sucks when the single-task challenge comes later :/

Martin Büttner

@BetaDecay Without the weirdly strict I/O requirements, this would have been catalogue material.

Geobits

I think this one's probably ok though.

VTCAKAVSMoACE

Is « part of ASCII?

Wait, nope, it isn't. Crap.

Martin Büttner

5:33 PM

might be in some extended ASCII set

yeah it has character code 171, so it's in ISO 8859-1

VTCAKAVSMoACE

Hmm... it's a script character, though, so... crap. It was going to be one of my series of AppleScript answers in the Cops & Robbers thing.

New Meta Posts

0

Q: What happens when this SE site graduates?

Earlier this summer there was a grape in the vine saying this site was going to graduate this Fall and it dawned on me now. What does that even mean? I've read the reputation requirements for some privileges go up and we aren't evaluated monthly on our performance on Area 51 anymore. The beta sig...

discussion

Geobits

That makes me so happy :)

Beta Decay

5:49 PM

@MartinBüttner Hmm strict? What would a relaxed I/O be? :|

Geobits

From a couple hours ago...

2 hours ago, by Geobits

For most challenges, a good default is "a reasonable format" which might be a separated string, a native array or list, or even separate arguments. This way it's up to the user/language, and they can choose which would be best for the task.

Beta Decay

I see. Is it too late to change the input and output format now?

Geobits

When you say a set of numbers, do you mean non-repeating?

> Given a set of numbers, calculate the standard deviation of the set.

@BetaDecay To relax it a bit? I would say no.

Beta Decay

Nope, the numbers can repeat

Optimizer

more like a list of numbers

Beta Decay

5:57 PM

I've changed the rules now

Optimizer

do we now need to calculate mean instead of standard deviation?

Beta Decay

It's still the standard deviation...

Optimizer

do we now get a set of strings as input?

Beta Decay

You can if you wish

But you aren't limited to that

Optimizer

Is there a bonus if I always output -15?

I feel like there should be

Beta Decay

6:02 PM

If the input is Beta,Decay, there's a -10% bonus

Optimizer

boo. I wanted a -15% bonus

Beta Decay

Alright

-15 bytes bonus

flawr

@Geobits Yay, I think I am gonna set up a dating website for people who want to see horrible accidents as their live goals.

3

Beta Decay

Can't be too generous ;)

Geobits

Can I take input as a single number representing the std dev of the list?

Optimizer

6:04 PM

where is the list then?

your input is the single number. its a cat now

Geobits

Well yea. I thought that would be the most convenient format.

Beta Decay

@Geobits I can't tell if that's a glaring loophole or just you being persnickety...

Geobits

It's definitely not the latter...

Sven The Surfer

If you post that, I'll give you an upvote for sure

Optimizer

@flawr you's gonna get some really bad people signing up in that one ... :P

flawr

6:09 PM

@Optimizer Are you going to sign up too?

Optimizer

@flawr ( ͡° ͜ʖ ͡°)

Alex A.

The only members of the site will be flawr and Optimizer.

Geobits

New Match detected!

Optimizer

Who said I like plane crashes?

Alex A.

No one. I just said you'd join the site.

flawr

6:11 PM

I said horrible accidents in general.

Optimizer

the only part of plane crashes I like is birds crashing into the plane!

LOLOLOL

Alex A.

ಠ_ಠ

Beta Decay

Haha unfortunate caret ;)

Sp3000

@BetaDecay You might want to delete your outdated comments on the main post

Optimizer

alex-approves

Geobits

6:12 PM

@Optimizer As someone who's scraped dead bird off planes, I have to disagree ;)

Alex A.

Oh Jesus

Optimizer

@Geobits won't be the first time

Beta Decay

@Sp3000 Done

Alex A.

I hope you gave my people a proper burial.

Optimizer

"people" ?

birds are people too?

Alex A.

6:13 PM

Yes

Geobits

@AlexA. Probably not. If they went through an engine it's mostly just blood and feathers left :/

flawr

So you can choose [x] plane crashs, [x] crashes involving animals, [x] crashes of race cars, [x] crashes resulting in severe injury, [x] crashes with fire, [x] crashes with explosions, etc

Alex A.

So all of those are checked for you? :P

Optimizer

[X] crash into your crush

[X] crush into your crash

Geobits

[x] crush your crush

Optimizer

6:16 PM

[X] crash your crash

[X] cash your crash

New Main Posts

0

Q: Code to print multiples of 3, multiples of 5, and multiples of 3 & 5 between 1-100

Code to print multiples of 3, multiples of 5, and multiples of 3 & 5 between 1-100. Print "Buzz" if it's a multiple of 3. Print "Fizz" if it's a multiple of 5. Print "BuzzFizz" if it's a multiple of 3 & 5. Shortest code please. Programming language not an issue.

fastest-code python programming-puzzle

Geobits

No. No. NO.

Optimizer

"and multiple of 3 and 5" ?

Alex A.

@Geobits That reminds me of a story that my driver's ed teacher told us. It was part of a lesson to never endanger human life for the sake of an animal. He mentioned that he was once on a drive with a couple of students. He was in the front passenger seat, a student was driving, and there was a student in the back. There was a goose in the road and the guy said, "Hit it." The student was like, "No!" and the just said, "Hit it." The student went white-knuckled gripping the steering wheel.

Optimizer

the first two will cover them too

Alex A.

6:17 PM

The student in the back screamed because there were feathers and blood stuck to the car.

Also this, @Geobits:

Note that if the person from which you heard we'll be graduating in the fall was named Geobits, it is not true. — Alex A. ♦ 11 mins ago

isaacg

Do we have a fizzbuzz question already, or is this the first.

Alex A.

We have at least one, I think more.

Optimizer

@AlexA. yes, only my info regarding graduation is correct

Alex A.

Obviously

Llamas never llie.

Sp3000

We have the catalog, mirage and reverse solver to name three fizzbuzzes

Optimizer

6:19 PM

6 mins ago, by Optimizer

alex-approves

TimmyD

BuzzFizz? What is this, Alternate Evil Mirror Dimension world?

Alex A.

What? No...

This is Patrick.

Is this the Krusty Krab?

No, this is Patrick.

Geobits

It's not very nice of you to call me a liar (╯︵╰,)

Optimizer

awww

its so cute

Alex A.

I never said you were a liar, I just said that any information you provide regarding graduation is false.

There's a difference, however slight.

Optimizer

6:21 PM

paradox detected

Alex A.

Shortest code to produce a paradox code-golf underhanded crap-challenge

flawr

@BetaDecay Please make a note in your challenge for informing people about the difference between the sample standard deviation and the population standard deviation.

^

^

<

6:24 PM

After up up comes down down, not left.

Optimizer

I'm the bauss

flawr

bauss?

Alex A.

Sigma denotes the unknown population standard deviation, which is not equal to the square root of the sum of (x_i - mu)^2 / N. That's the sample standard deviation, denoted sigma hat or s. @BetaDecay

Also the sample standard deviation usually uses N-1 as the denominator

flawr

And the subsample standard deviation has N-2 as a denominator.

Beta Decay

@AlexA. So, if I understand what you're saying, the equation I give shoudl use sigma instead?

Alex A.

6:30 PM

Well, the population standard deviation is an unknown quantity.

It's estimated by the formula you listed

Beta Decay

...you've lost me now :P

flawr

BUT WHAT IF YOUR ESTIMATE IS CORRECT?

Alex A.

It's still an estimate

Optimizer

@flawr Investment banks hire you

flawr

@BetaDecay Just note that there are two different things that people mean when refering to the 'standard deviation'.

Martin Büttner

6:32 PM

@BetaDecay What Geobits said regarding input. Regarding output, see the message I sent you earlier.

flawr

The difference is that some mean the formula you have there, and other mean basically the same but with an N-1 instead of an N. Many builtins use the N-1 and not the one you wanted.

Optimizer

holy sh*t. Just saw two kangaroos fight like normal humans and then one chocking the other to death. twitter is getting weird.

Alex A.

@BetaDecay Say you're trying to determine how much people's heights vary. You obviously can't measure the height of every living person, so you take a representative sample of people whose heights you can measure. You calculate the standard deviation of their heights and that's your sample standard deviation. That's an estimate of the population standard deviation, which is a fixed, unknown quantity.

Does that make sense?

flawr

@Optimizer When I read this I thought you're looking out of your window.

Optimizer

@flawr i am not an Australian

Beta Decay

6:34 PM

@AlexA. Ah yeah I get it

Geobits

Some zoo llamas could probably see kangaraoos.

Optimizer

@Geobits there is no window then

Alex A.

The zoo is like llama prison.

Geobits

Some zoos have windows.

flawr

Some zoos have llamas.

Some zoos have both!

Geobits

6:35 PM

Especially in the dangerous pens, like lions, tigers, and umm... llamas.

Optimizer

i can clear the doubts by posting the video link

Alex A.

Alpaca lunch for you.

flawr

Scorpions - The Zoo HD - live at Wacken Open Air - 2006

►

Optimizer

llama o

Geobits

A video doesn't prove you didn't also see it out the window :P

flawr

6:36 PM

Does anyone of you know the 'scorpions'?

Alex A.

Of course!

Geobits

Yea, I do.

Optimizer

@flawr the pair who lives next door?

Beta Decay

I've never seen a llama in a zoo... I've only ever seen llamas in fields in cold, damp Welsh valleys

flawr

@Optimizer I do not think there are scorpions next door.

Geobits

6:38 PM

There may be next door to me. I haven't checked.

Optimizer

@flawr you live in the same zoo too?

flawr

@Optimizer You mean in the same zoo as geobits?

Geobits

Geobits does not live in a zoo.

VTCAKAVSMoACE

Heh. I just posted an answer in AppleScript that's less than or equal to 2 bytes. Mind. Blown.

Geobits

Yay for brute forcing a crack! :D

flawr

6:39 PM

@VTCAKAVSMoACE Links?

Optimizer

Geobits do not live in zoos.

Geobits

Geobits is singular.

Optimizer

Geobits are singular

individually

VTCAKAVSMoACE

Ugh. I wish there was a way to prevent brute forcing.

0

A: The Mystery String Printer (Cops)

AppleScript, ≤ 2 Bytes What's this? A short AppleScript answer? :o missing value (yes, this DOES print to stdout)

Geobits

There is a way. Write it in AppleScript so nobody bothers with it.

flawr

6:41 PM

Is there an applescript interpreter available somewhre?

VTCAKAVSMoACE

If that was the way to win, I'd never lose. XD

Umm... lemme see.

I think there is in developer.apple.com

flawr

*For windows?

Optimizer

or linux

or Android

you stereotyping plane crasher!

Geobits

or PalmOS

flawr

Or TempleOS

Optimizer

6:43 PM

or Tizen

flawr

or Bada

Optimizer

or Watch OS

or Android Wear

or Symbian

flawr

or FirefoxOS

Geobits

@flawr There won't be one for TempleOS. Apples represent the fall from grace and something something blah...

VTCAKAVSMoACE

OSAScript is written in a UNIX executable, so I'm sure it exists.

discussions.apple.com/thread/2300738?tstart=0

Orr not.

flawr

6:46 PM

PS: Is there no 2d language that could do this quite easily?

26

Q: Home improvement for the Minotaur

Home improvement for the Minotaur The cretan labyrinth is quite easy to draw. Just start with a symmetric shape (here in red). Let us call all the endpoints of those lines 'nodes'. Then you begin drawing the arches (black): The first one alway begins in the top middle node and connects to the n...

code-golf ascii-art labyrinth

VTCAKAVSMoACE

The problem with a non-OSX interpreter for AppleScript is that AppleScript's most typical purpose is to automate system events.

For example, I change my system volume as a logarithmic fade with an AppleScript tied to one of my keys.

El'endia Starman

@flawr I keep thinking about that one.

I'll take a crack at it after I go to a sorta job fair this afternoon/evening.

VTCAKAVSMoACE

I'm really sad I couldn't do my other 2 byte answer. :c It's much better, but involves non-ASCII.

André Muta

Does anyone knows what @YiminRong is talking about?

12

Q: Area of the triangle

Another easy challenge for you. Your task Write a program or function that takes the input, which contains 3 pairs of x- and y-coordinates and calculates the area of the triangle formed inside them. For those who can't remember how to calculate it, you can find it here. Example: 1,2,4,2,3,7 ...

code-golf geometry

on the comments of the question

Geobits

Well, we may not have hoverboards, but the future is here :D

André Muta

6:58 PM

I have no idea how to answer him

Geobits

Tesla just enabled 60k cars to drive themselves, via an OTA update. This is awesome.

VTCAKAVSMoACE

You can say absolute area.

Rainbolt

@Geobits You can read that comment in two ways. There are now 60 thousands cars that can drive themselves, or there are cars that cost 60 thousand that can now drive themselves.

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