The Nineteenth Byte

2:00 PM

say i have a list of tuples, and i want to convert it into a dict where the keys are the sums of the tuples and the values are the list of tuples with that sum

trichoplax

@Geobits I think you can only do that yourself...

sirpercival

what's the golfiest way to do that

Geobits

@trichoplax Yea, probably.

trichoplax

@Geobits Best make the next one REALLY good ;)

sirpercival

at the moment i have d = {s:filter(lambda x:sum(x)==s,l) for s in set(map(sum,l))}

is there a better way?

trichoplax

2:03 PM

@sirpercival I assume the spaces in ` = ` are just for clarity?

sirpercival

yes

i'm looking for an algorithmic golf, not a character-wise golf

Geobits

Too. Much. Pressure. Can't. Think. Of. Great. 10000th. Message :(

Joshpbarron

I'm a knob.... You don't need to escape ' inside a "

-2 chars

Martin Büttner

@Optimizer I actually thought about putting it there last time it came up...

sirpercival

a list works as well as a dict, but i would need to throw a sorted around the set

Martin Büttner

2:05 PM

@Geobits I am disappoint.

trichoplax

@Geobits There's still time to edit...

Geobits

No way, not after that kind of buildup ;)

Optimizer

how do you know its 10000th

Joshpbarron

He counted

Geobits

I'll just have to think of something for my 11111th or 12345th one. That should give me some breathing room.

Martin Büttner

2:07 PM

@Optimizer go to the room info. hover about little number in the lower right corner of the user's panel on the right.

Geobits

^ or user chat profile.

Martin Büttner

we should make a scatter plot of rep vs no. of chat messages

Optimizer

dammit, I already crossed mine

now I cannot ruin it :/

sirpercival

ha, [x for x in l if sum(l)==c] is shorter than the filter() by a couple bytes

Optimizer

but I would have anyways ruined it already :D

trichoplax

2:09 PM

@Optimizer Wow we're more talkative than Geobits...

@sirpercival Nice one

Optimizer

that's what happens when you are not full of Geobits

Martin Büttner

hm, I was thinking about doing a simple golf to generate/print the Pauli matrices (given an integer in 0..3)... but I can't think of anything clever that will feasible in non-golfing languages over just hardcoding all four of them. :/

sirpercival

@trichoplax it's still wordier than i'd like

@MartinBüttner thoughts on my astrometric tiling challenge?

Martin Büttner

@sirpercival sounds hard :P

Optimizer

link ?

sirpercival

2:11 PM

@Optimizer meta.codegolf.stackexchange.com/a/5204/31863

what's a version of "wordier" that applies to bytes instead of words? bytier? that seems weird

longer? :P

boring

@sirpercival bowler

how about information-sparse

:D

trichoplax

readable?

Joshpbarron

2:14 PM

Grotesque?

sirpercival

hahahahaha

Geobits

The reason bytier doesn't work IMO is because a byte doesn't correspond to a word, but a letter most of the time. You don't say letterier.

keywordier

UnOptimized?

verbose?

2:15 PM

nonterselike

Optimizer

dumber ?

Martin Büttner

@Geobits stringier then?

sirpercival

verbose is p good

Optimizer

poorly ?

sirpercival

gregarious?

pretty

loquacious?

Geobits

2:16 PM

@MartinBüttner I like that :D "Your code is a bit stringier than it needs to be."

"Eww, this is way too stringy."

trichoplax

This clearly needs a meta question to settle on a default 10 point scale

sirpercival

hahaha

Optimizer

@trichoplax a meta-golf ?

trichoplax

@Optimizer No I meant a meta discussion - how would a meta golf work with this though?

Optimizer

@trichoplax I meant, how do you consider top ten ? shortest ones ?

trichoplax

2:21 PM

Oh I see - no I meant a scale from golfy to stringy, with various adjectives in between

Geobits

Do they all need to be superlative-enabled?

trichoplax

@Geobits Oh yes

Abdou Abdou

so as i get the purpose of the rules , every challenge must be sandboxed when its not about code-golf ? so the author would be leaded to a good scoring ?

trichoplax

@AbdouAbdou It's recommended to sandbox every challenge, whether it's golf or not

Geobits

@AbdouAbdou Not must, but just "it's a good idea", especially if you don't have much experience with posting.

sirpercival

2:23 PM

golfy -> dense -> terse -> abbreviated -> short -> long -> extended -> gregarious -> sparse -> stringy

Abdou Abdou

yes , two challlenges of mine were been closed

sirpercival

yes short and long are adjacent on purpose

Geobits

@sirpercival Some of those are superlative-challenged.

Abdou Abdou

so i think i lack of experience

sirpercival

@Geobits then improve it :D

Geobits

2:24 PM

Or just force it: abbreviateder

Optimizer

abbvdr

trichoplax

@AbdouAbdou My approach is this: post it in the sandbox. If it gets improved, that's good. If it turns out to be already perfect, there was no harm in waiting in the sandbox for a few days

2

Martin Büttner

back to Pauli matrices... how about you get a string of digits 1 to 3 (representing the matrices), and you need to reduce them to a single matrix plus leading - or i or -i depending on the phase.

Abdou Abdou

@trichoplax aha , thanks

VisualMelon

(and don't feel like you can't advertise it here if it doesn't get much attention, I think this is considered fine)

trichoplax

2:26 PM

@AbdouAbdou :)

Optimizer

@trichoplax unless lives depend on the posting of the challenge, where every day you delay, a kitten dies somewhere

trichoplax

@Optimizer Nobody here likes kittens

Optimizer

That's why we sandbox so much ?

:D

trichoplax

lol

Optimizer

the secret is out!!!1

Martin Büttner

2:47 PM

due to the overwhelming support I got for the Pauli matrix idea, I thought I'd sandbox it ;)

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Multiply Pauli Matrices code-golflinear-algebra The Pauli matrices are a set of 2x2 matrices which appear very commonly in quantum physics. If we include the identity in the set, the four matrices are: σ0 = σ1 = σ2 = σ3 = [1 0] [0 1] [0 -i] [1 0] [0 1] [1 0] ...

Optimizer

3:02 PM

this much support should have been enough for directly posting it though :P

Martin Büttner

:P

randomra

it this bounty edit clear? codegolf.stackexchange.com/questions/49450/…

Optimizer

@randomra although, you cannot give 2 50 rep bounties

second one will be minimum 100

Geobits

Any woodworkers in the house? woodworking.stackexchange.com/q/1363/570

Martin Büttner

wow, silver for the poker card answer...

randomra

3:06 PM

@Optimizer even if they are not active at the same time?

Optimizer

@randomra yes. but I am not sure if you can have two bounties active at the same time anyways

Martin Büttner

@Geobits provided that gets a nice answer, that is bound to go crazy on the HNQ :D

@Optimizer not on the same question, I think

Optimizer

woodworking.se is popular ?

Geobits

@MartinBüttner Maybe. Unlike some of my questions (especially here) I'd much rather get a "useful" answer than rep for this one ;)

Both would, of course, be optimal.

randomra

ok, increased the second one to 100

Martin Büttner

3:09 PM

@Optimizer no, but I believe a lot of people would click that question if they see it in the HNQ

Optimizer

@MartinBüttner its a cycle. it wont go to HNQ unless it gets more views and an anaswer with upvotes

(in a short period of time)

Martin Büttner

well yeah, but ww doesn't have a lot of activity, so the traffic scaling should make it easier to get into HNQ (as I said, provided it does get a nice answer)

Optimizer

there is traffic scaling in place ?

Geobits

Yes, or I'd never have even heard of woodworking.se, most likely.

Who knew that giving my kid HP books would mean I got to make magic wands in my spare time? Go figure.

Optimizer

why do you have such tools for woodworking ?

Geobits

3:14 PM

I don't, but family nearby does. Did it on a Saturday while visiting.

Besides, it's fun.

randomra

3:26 PM

do I get notification when my bounty is about to expire?

Optimizer

yes

Geobits

Yes, when it expires, when it's close, when the grace period is almost over... it doesn't shut up about it.

Optimizer

Saturn's Rhea

Geobits

Looks like a moon.

Optimizer

Rhea is the name

this is 11000 X 7000 px image by Cassini

Geobits

3:28 PM

I know, I'm just saying it just looks like a moon. Is there any significance to the picture?

Oooh, got it.

sirpercival

cassini has taken some of the most amazing pictures in the solar system IMO

Optimizer

hubble has better

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

the challenge is about chat addressing , the program receives a list of chatter A,B,C,D,.. , then keyread a series of lines from a conversation , example: A,B,C A:B (means A talks to B) B:A,C (means B respond to A about C) C:D,A (means C talks about B and A in public) D:B,A (D talks to C ab...

Geobits

I normally just use my smartphone camera and a magnifying glass.

Optimizer

camera was pretty obv

Geobits

3:32 PM

prbly.bttr2obvthnntenf

Optimizer

twss

Sp3000

@MartinBüttner For the example where you have 7 = 3 + 2 + 1 + 1, should one of the 1s be blue?

Also, am I allowed to blow the stack if you're really unlucky? :P

randomra

@MartinBüttner edited in some suggestions, remove which you find unnecessary (meta.codegolf.stackexchange.com/a/5213/7311)

sirpercival

@Optimizer i said in the solar system; hubble doesn't really point at solar system objects

Optimizer

@sirpercival so of solar system

sirpercival

3:37 PM

of solar system objects, yes

Optimizer

because Hubble is also taking pictures in solar system

@Calvin'sHobbies in my defense, you are a team!

Geobits

Hubble takes pictures of solar system objects, too, just not exclusively. For example, science.nationalgeographic.com/science/photos/hubble-images/#/…

Martin Büttner

@Sp3000 yes, thanks

@Sp3000 eh, nope... there aren't really any ridiculous limits to be taken into account in this challenge.

Sp3000

:( okay

Martin Büttner

@randomra those are good, thank you!

randomra

3:46 PM

I would like to see/make a normal-looking challenge, where your code can fail at a given percentage of the possible inputs so you can do some shortcuts

Optimizer

several identify gender, etc are like this

Geobits

Most people in real life fail to identify gender at some percentage, so that seems fair.

Sp3000

Man, everything looks so CJam-able now

Optimizer

4:01 PM

Welcome to the real world!

I had an idea of doing a challenge where you have to append "That's what she said" to all the possible matching cases, while not to the non-matching ones.

but the cases are getting all dirty :D

Geobits

That's what... oh.

Optimizer

and I am sure many people will find it offending :D

Martin Büttner

@Sp3000 @sirpercival do your submissions work for minutes that aren't multiples of 5?

Sp3000

... oh, shoot

sirpercival

@MartinBüttner integer division :D

Martin Büttner

4:14 PM

@Sp3000 I should probably make that clearer in the challenge.

Sp3000

Let me revert a little...

There goes my 9 byte saving :P

It's funny because I read the whole thing earlier, but still managed to forget

Abdou Abdou

question : VB and Java seem hardly existent whats the secret behind ?

"hardly existent"?

exists hardly

I mean, where

4:23 PM

everywhere in codegolf.SE

Martin Büttner

because who would write in VB for fun?

also Java definitely exists

but neither are particularly well suited for golfing

Abdou Abdou

java , is because its O.O nature

Martin Büttner

Java

Sp3000

Java's quite common actually, considering

Martin Büttner

VB (there are some more, where it's called "Visual Basic" for instance)

Abdou Abdou

4:25 PM

java is oriented object , which does mean , so many code sheets are needed

Martin Büttner

people usually just write lambdas to avoid the boilerplate code

Abdou Abdou

but golfing , is one whole piece challenge

Sp3000

Man, I having a lot of trouble clocking in CJam :( too many assign to vars

Abdou Abdou

@MartinBüttner well VB is alot of fun , see en.wikipedia.org/wiki/Visual_Basic_for_Applications

Martin Büttner

@Sp3000 should still turn out well under 200 though :P

Abdou Abdou

4:30 PM

it doesnt beat ActionScript anyway

Sp3000

Should be sub 100 easily, but there's too much shuffling going on :/

randomra

4:42 PM

example test cases added for "Non-crossing X's and crossing non-X's" meta.codegolf.stackexchange.com/a/5197/7311

randomra

5:21 PM

has xnor revealed the solution for his 0-1 list printing mini-challenge?

xnor

@randomra yup, check the python golf tips

randomra

@xnor nice, I can picture some of it in horrible production code

Optimizer

I leave for an hour and all of you lose track of the main thing

Geobits

@Optimizer That's what she said...?

Optimizer

@Geobits your code needs some fixing. that is a negative test case

I was talking about upvoting my answers :P

Geobits

5:35 PM

It's a learning algorithm. That's why the question mark. It'll do better next time.

randomra

@Geobits That's what she said, but I was thinking about a partially language-recognition based challenge too.

Geobits

As in "identify the language of this text"?

randomra

solving as much of a crossword as you can with a program no bigger than e.g. 2MB

and you have the clues for the words

(correct letter +X points, wrong one -Y points)

Geobits

Oh hell. Are the clues like actual crossword clues? Some of them are tricky even for humans to parse.

randomra

you will probably need some letters already in the crossword so you don't rely on the clues so much

but you should ideally use them to help

Geobits

5:42 PM

Ah, that sounds a bit less research-paperish.

randomra

and I'm sure there are generators for very easy crosswords on the net

Geobits

Yea, for easy ones I could see. For good ones, not so much I'd guess.

I've been pondering something based on padlock letters, but I haven't found anything non-boring yet.

randomra

the problem is if the generator only using a small set of clues/words it's easy to hardcode that

maybe I can generate word-clue pairs by taking out a word from a sentence and the rest of the sentence is the clue (or something along these lines like definition of the word)

Geobits

Maybe you can find a massive clue db somewhere online.

If using definitions, you could use a whole dictionary. Just take a random definition for each word.

Better yet, use urbandictionary O.O

> Clue: A person who has a limited posterior. One who cannot fill out a pair of jeans.

> Word: lackoass

randomra

and first I write a challenge which asks to generate random crossword puzzles

Geobits

5:50 PM

Lazy and effective. I like it!

PhiNotPi

6:00 PM

I feel like I missed a massive golfing session...

Optimizer

That's what she said!

Compass

My workspace takes forever to build

Optimizer

6:17 PM

Never knew Alex was my neighbor! Such a small world!

6

Alex A.

Haha I came in here just to post that exact thing

Optimizer

for wider audience.

randomra

@Optimizer were you on the beach a lot?

Optimizer

@randomra yeah, good times.

Alex A.

I feel like I missed something here.

Sp3000

6:29 PM

:( there's not enough Fibonacci clocking going on

Alex A.

@Optimizer: Let's clear out our comments on sirpercival's post.

Optimizer

right

Geobits

I started fibclocking, but having separate 1s made it really ugly really fast. Gave up on golfing at that point, to be honest.

Alex A.

What in the world is "fibclocking"?

Sounds like something that should be banned in schools.

Geobits

@AlexA. It's this: codegolf.stackexchange.com/q/49822/14215

Alex A.

6:32 PM

@Geobits Oh. Okay.

Geobits

And it is banned in schools in some places.

Alex A.

...Seriously?

Geobits

(note: I make stuff up sometimes)

Alex A.

(Note: I believe just about anything because I have no reason to believe any given person would lie to me.)

;)

Geobits

Ah, youth. Must be nice :P

VisualMelon

6:34 PM

I am youthful, I am Paranoid, I spent the best of a minute earlier punching myself in the face... I think there might be something wrong with me

Alex A.

@VisualMelon: Uh... yeah. Maybe.

Geobits

Based solely on that sentence, you may be right?

VisualMelon

and before someone asks, yes I am listening to 7s of the Psycho theme on repeat.

Sp3000

@AlexA. If Geobits says something which is too good to be true, no graduation is not happening in 3 months.

Alex A.

@Sp3000 That much I know.

Geobits

6:35 PM

But it was on the SE blog! June 13th!

Sp3000

:P

Alex A.

I'm onto your dirty tricks, @Geobits.

Geobits

That's.... what... she... dammit.

Alex A.

I now have no reason to believe that any given person would lie to me... Except Geobits.

@Geobits Oh booooooo

You can do better than that. :P

VisualMelon

I'm also a professional ballet dancer, and once received a commendation for helping an old man across a road

Geobits

6:37 PM

@AlexA. It was a callback to earlier chat: chat.stackexchange.com/transcript/message/21534963#21534963

Calvin's Hobbies

big toes ⇒ big lies

3

Geobits

Not big lies. Only bending conventional truths to further the humor of the room.

Calvin's Hobbies

Yet another lie

Geobits

:D

Alex A.

@Calvin'sHobbies: Somebody spotted us in the wild.

Calvin's Hobbies

6:40 PM

I don't think you stood a chance

Optimizer

@AlexA. Why are you all over his lips ?

Alex A.

@Optimizer :(

Geobits

@Optimizer That one would not be a negative test case.

Optimizer

@Geobits I see your algorithm is improving..

So what is the general opinion ? If I somehow filter out the really dirty ones, does the challenge sounds fun ?

Calvin's Hobbies

What challenge?

Optimizer

6:42 PM

That's what she said

Alex A.

3 hours ago, by Optimizer

I had an idea of doing a challenge where you have to append "That's what she said" to all the possible matching cases, while not to the non-matching ones.

Calvin's Hobbies

What's a matching case?

Alex A.

@Calvin'sHobbies Us in a less violent habitat.

randomra

@Optimizer I was thinking for quite some time how that "Thatswhatshesaid" connects to CH's question

Optimizer

@Calvin'sHobbies where TWSS would suit. it would be a set that I define.

Geobits

6:45 PM

What if we disagree about a case and code to match? :P

randomra

@Optimizer does the set will be known? so it's like the regex golfs?

Optimizer

yes

@Geobits then you ... lose ?

Calvin's Hobbies

@AlexA. This is getting weird..

Alex A.

@Calvin'sHobbies Yep, I'm done.

Optimizer

@randomra you can use regex golf, or build a really impressive NL. I am still not convinced to make it a golf

@AlexA. That's what she said !

:(

Alex A.

6:47 PM

... *crickets*

@Calvin'sHobbies In my defense, those are the only two pictures of a tiger and goose together I could find.

Geobits

That's because normally the goose is eaten before a picture is taken ;)

Alex A.

^ probably exactly why

Optimizer

How are you still alive with CH being here ?

Geobits

I doubt llamas would fare much better, to be honest...

Alex A.

I'm hiding behind the llama and some giant toes.

Optimizer

6:51 PM

@Geobits you know, you seem very confident, being just toes

Alex A.

Haha

Calvin's Hobbies

@Geobits Only Martins can escape

Alex A.

Holy crap those are the cutest things ever. (The fuzzy animals.)

Geobits

They say the only foolproof way to catch a tiger is by his toes, but they don't really have to be his toes.

Alex A.

^ what

Geobits

6:54 PM

> Eeny, meeny, miny, moe, catch a tiger by the toe...

Optimizer

@Geobits but they say, they have to be his toes

VisualMelon

Geobits isn't the only person to have ever lied

Geobits

Wiki says by the toe. And if it's on the internet, it's obviously true.

Alex A.

But how could you catch a tiger with someone else's toes?

Calvin's Hobbies

Toe gun

Geobits

6:55 PM

@AlexA. Trade secret. Geese don't have toes anyway, so you don't need to know.

Well, nothing I'd call a toe. Maybe technically.

Alex A.

@Calvin'sHobbies What happens after 10 shots?

Geobits

Reload!

Alex A.

With what?

Geobits

Umm... toes. It's a toe gun.

Alex A.

But you only have 10. (Presumably)

Geobits

6:56 PM

The premise here is that you can use any toes.

Calvin's Hobbies

^

Alex A.

I thought we were catching a tiger with your big toes.

Geobits

Nah, I just meant that toes are useful for catching tigers, whereas llamas and geese are not.

Alex A.

Geese make good bait.

(See first picture of tiger and goose)

Geobits

This is not something a goose should be admitting. I'm almost starting to think you're not really a goose and you've been lying.

Almost.

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