The Nineteenth Byte

El'endia Starman

23:00

Aaand that game was 3-3.

quartata

-12

Q: Is the number divisible by 7?

Given an integer input, write a program that prints a truthy value to STDOUT or equivalent if the input is divisible by seven. Sounds simple enough, right? There's a catch - you can only use subtraction and multiplication. No other operators or built-in math functions are allowed. Hint there is...

This question has easily gotten the most downvotes I've seen in a long time

BlockCoder1392

yup

@El'endiaStarman Wheres the challenge? I want to post my randbot

El'endia Starman

@BlockCoder1392 I think I'll be posting it soon.

quartata

boring challenge + arbitrary restricted source to cover up "loopholes" = recipe for disaster. Always

El'endia Starman

yup

quartata

23:01

I've seen it too many times. People will find a way around it, and the challenge becomes boring again.

Not to mention the restricted source doesn't add anything interesting anyways

:/

SuperJedi224

What about a task where given a natural number that encodes a vector of integers in [encoding to be finalized], you need to generate said vector?

quartata

I'm thinking maybe I should add a "disclaimer" about this to the restricted-source tag wiki

SuperJedi224

It would likely wind up including prime factorization of arbitrarily large numbers as a subset of the task

quartata

I've been seeing more challenges like this lately.

BlockCoder1392

Hii

Alex A.

23:03

@quartata Yeah. I'm actually pretty impressed. Haha

quartata

I've seen worse though

That palindrome hello world challenge had about -14

BlockCoder1392

:o

Alex A.

@quartata My two least favorite tags are restricted-source and quine.

El'endia Starman

Do I need to add a winning condition for the Spacewar! KotH?

BlockCoder1392

@quartata It's at 9

Alex A.

23:05

@El'endiaStarman Yes or else it's off topic

El'endia Starman

How should I deal with rock-paper-scissors situations?

quartata

@BlockCoder1392 It USED to.

BlockCoder1392

Oh

New Main Posts

3

Q: Is my name official?

Introduction As ToonAlfrink says: "Me thinks there aren't enough easy questions on here that beginners can attempt!". So the task is very simple. Given a string, output a truthy or falsy value whether the name is official or not. When is a name official? If the first letter is capitalized (no...

code-golf string

quartata

codegolf.stackexchange.com/tags/restricted-source/info

That's better.

I forgot tag wikis were a thing :P

I killed chat again. Oops.

!unkill

Alex A.

23:18

I HAVE RISEN FROM THE DEAD

quartata

\o/

Alex A.

Martin Büttner

@quintopia did you figure out the associativity thing?

Alex A.

@Doorknob冰 Look, I did a thing!

quartata

@AlexA. eek Julia

Alex A.

23:19

@quartata ಠ_ಠ

The "thing" of which I speak is related to vim (specifically Neovim, which @Doorknob冰 needs to try), not Julia.

Martin Büttner

@isaacg how do you define associativity for functions that aren't closed over the domain? (Like the addition over 0..2 example)

I can compute (0+2)+2 from the table, but not 0+(2+2)

I thought about this some more earlier and came to the conclusion that associativity requires closure, and closure + commutativity implies associativity, but seeing that example I'm not so sure.

El'endia Starman

Are there any standard/sensible ways to compare/order normal distributions?

Ways that utilize both mean and standard deviation, that is.

I want to reward both quality and consistency.

Alex A.

Uh, sort descending by mean, ascending variance?

El'endia Starman

That's what I thought first too.

Alex A.

I meant the opposite of what I said

Largest mean, smallest variance first

Unless big mean is a bad thing

Then ascending both

El'endia Starman

23:24

That's what I meant. :P

Big mean is good, small variance is good.

I guess that's good enough.

xnor

mean minus a constant times stdev

NinjaBearMonkey

mean minus a constant times stdev

Martin Büttner

Let me break the combo before it goes any further...

El'endia Starman

stdev times constant a minus mean

xnor

that was weird

El'endia Starman

23:28

I guess, really, my main concern is that a bot have only a slightly higher mean but huge variance, and that would beat a bot with a slightly lower mean but little variance.

Alex A.

@xnor Looks like you BearMonkey'd yourself

El'endia Starman

I guess I can just say "subject to tweaking", but I'm not sure people would like that.

Alex A.

@El'endiaStarman Instant -12!

BlockCoder1392

just now eek

El'endia Starman

HA.

I hope not...

Alex A.

23:30

I don't think you'll have to worry about that ;)

Doorknob 冰

@AlexA. Yeah yeah I get it you like Neovim :P

El'endia Starman

> For every bot, the ratios (wins+1)/(losses+1) will be calculated, then the mean and standard deviation of these ratios will be calculated. A higher mean will have priority, and in case means are within 1 unit of each other, the lower variance will have priority.

Alex A.

@Doorknob冰 (look at what I wrote though--I API'd you, and look at what's behind the background)

El'endia Starman

I think that should do.

Alex A.

@El'endiaStarman yas

Doorknob 冰

23:32

@AlexA. Surely you mean the opposite of opaque?

Not transparent, either

hahaha

I would probably have said translucent

Alex A.

When in doubt, no adjective at all

quartata

Er... this is embarrassing... but

1

A: "Hello, World!"

Deadfish~, 1 byte w Hooray for built-ins.

I don't think this qualifies as a programming language...

esolangs.org/wiki/Deadfish~

I don't see how you could add two numbers or do a primality test with just one accumulator.

In fact

Congratulations! -- I'm afraid this answer might be invalid. With a single accumulator, I don't see how addition (let alone primality testing) could be implemented in Deadfish~. — Dennis ♦ Sep 7 at 16:54

(from TPLQ)

Alex A.

I left a comment

quartata

...

Alex A.

,,,

quartata

23:38

I guess Dennis is human after all. What a disappointment.

16

BlockCoder1392

...

,,,

Adnan

;;;

Doorknob 冰

@AlexA. /me is cloning neovim/neovim

Alex A.

@Doorknob冰 :D

/you is will like it

BlockCoder1392

\r\nH\r\nH\r\nH

Doorknob 冰

23:39

CRLFs? Yeccchhh.

Alex A.

What is this, Windows chat? Yeah, I didn't think so.

Get those filthy CRLFs outta here.

quartata

@BlockCoder1392 ew

I forgot CRLF was even a thing

Doorknob 冰

Three days ago the hotel wifi had 2mbps. Now I'm cloning neovim at 150kbps -_-

Alex A.

@Doorknob冰 wer r u

El'endia Starman

Y'know, free WiFi at the hotel is a pretty recent thing.

Alex A.

23:40

Is your family on a vacation without inviting me? D:

quartata

@Doorknob冰 Jeez and I thought my internet was bad

Doorknob 冰

@AlexA. Somewhere in the Caribbean

@quartata My internet at home is pretty consistently around 200kbps (download, at least).

Alex A.

@Doorknob冰 That sounds wonderful. Sure wish I would have been notified like I usually am.

Maltysen

@Doorknob冰 when did your vacation start? Today was our last day of school

quartata

@Doorknob冰 Me too. :/

Doorknob 冰

23:41

@AlexA. It's okay just fly over here. That's how birds work, right?

4

Alex A.

Yes it is

Doorknob 冰

@Maltysen Last exam was last Thursday

El'endia Starman

3000+ miles is a bit of a distance to fly.

Though some birds do do that. Alex is not one of them.

Alex A.

10/10 bird anatomy

@El'endiaStarman How do you know?

Birds can also ride in airplanes, you know. :P

El'endia Starman

> right

You uttered that word forbidden to you. o_o

Doorknob 冰

23:42

@El'endiaStarman Depends on if he's an African or European swallow.

El'endia Starman

@Doorknob冰 I thought that was all about weight, not distance.

Doorknob 冰

@El'endiaStarman "How do you know so much about swallows?" :P

El'endia Starman

hahaha

Alex A.

@El'endiaStarman it's hard to type with wings

@Doorknob冰 i am not swallow

@AlexA. I see now why that's a good idea - I'm going to attempt to change the challenge so it actually make sense, which will most likely invalidate most (if not all) questions... Most of them are invalid anyways, though — Jojodmo 7 mins ago

Doorknob 冰

@AlexA. ono how dus eatz

Alex A.

23:46

@AlexA. Why bother

@Doorknob冰 poot ma food in ma mowf

El'endia Starman

> [1,2] + [3,4]
> "1,23,4"

....JavaScript, why.

Doorknob 冰

I have no idea how this happened, but somehow build-essential got uninstalled on my system (taking g++, etc. with it)

So now I need to reinstall build-essential over a very slow connection

before I can make NeoVim

Alex A.

oops

Nathan Merrill

@El'endiaStarman implementing it still looks like a beast

Dennis

11

A: Should answers to fixed-output challenges be written in a programming language?

I don't think we should generally disallow solutions written in non-programming languages: They are only an issue for a minor subset of challenges (mainly kolmogorov-complexity or quine challenges). Challenge authors can already exclude such solutions, if they don't want them. Individual voter...

El'endia Starman

23:47

@NathanMerrill Oh, heh, it was a bit more involved than I expected. But not terrible!

Doorknob 冰

@El'endiaStarman Have you seen "wat"? If not, you should :P

El'endia Starman

@Doorknob冰 Yes, I have. :D

Several times.

Alex A.

@Doorknob冰 is thas a falm

@Dennis oic

Doorknob 冰

@AlexA. destroyallsoftware.com/talks/wat

make[4]: libtool: Command not found

what in the...

Alex A.

What happened to your system? :O

Maltysen

23:51

Protip: Annoy Ray Kurzweil by always referring to it as the 'Cybersingularity'.

El'endia Starman

So apropos.

Doorknob 冰

@El'endiaStarman Spacewar is live? :D :D

Okay, so apparently build-essential and a few other packages died in a dist-upgrade accident about 4 days ago

Alex A.

@Doorknob冰 Rest in peace

El'endia Starman

@Doorknob冰 Yes, it is! :D

0

Q: King of the Hill - Spacewar!

If you've ever played Spacewar!, you know it was a fun game. If you haven't, know this: it was (and is) one of the very first and most important computer games. And it's still fun! The clone I grew up on is this one, which is, apparently and unfortunately, Windows only. So I recreated it! The Ko...

king-of-the-hill

@BlockCoder1392 It has now been posted!

Doorknob 冰

autoconf and automake also seem to have perished somewhere

Alex A.

23:59

Might as well wipe your harddrive and start over

Doorknob 冰

Never fear, apt/history.log is here

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