The Nineteenth Byte

anyhow, here's my nigh endless list (some complaints aren't limited to python, but most are). regex, classes, class inheritance, ternary if-else, indentation via mandatory whitespace, lambdas, lack of type safety, class method declaration, (mainly python 2: confusion between statements and functions), scoping (to be fair I never cared about python enough to learn the specifics of scoping in python), global scope pollution, the weird desire to be partially backwards compatible with python 2, ...

Pavel

31 mins ago, by Pavel

https://insights.stackoverflow.com/survey/2017#technology

Mr. Xcoder

@StepHen Not what I meant. I wanted the equivalent of lambda a,b=1

Step Hen

@Mr.Xcoder yes I know

Mr. Xcoder

o

Step Hen

it doesn't exist

Mr. Xcoder

5:37 PM

Meh

Step Hen

closest you'll get is (a, b??) => b = b exists ? b : <default>

I think Hyper said he'll consider adding it though

New Main Posts

3

Q: Codegolf the sequence of distance-3 Hamming Codewords (A075926)

Codegolf the hamming code (with distance equals 3)! The sequence looks like this: 0, 7, 25, 30, 42, 45, 51, 52, 75, 76, 82, 85, 97, 102, 120, 127, 385, 390, 408, 415, 427, 428, 434, 437, 458, 461, 467, 468, 480, 487, 505, 510, 642, 645, 667, 668, 680... Task Output the first n hamming codewor...

Mr. Xcoder

I hope he does

Step Hen

this is what he said about it:

in Proton, 22 hours ago, by HyperNeutrino

because I didn't implement that

Mr. Xcoder

@StepHen It was a matter of outgolfing totallyhuman, so that borky syntax won't help :/ - Thanks for the references!

AdmBorkBork

5:40 PM

@Mr.Xcoder Hey, my syntax doesn't have anything to do with this. :p

Mr. Xcoder

Wow, Physics.SE is a dead place. The last questions have ≈5 views each, although they're >30 mins old

@AdmBorkBork Sorry, no pun intended :P

Conor O'Brien

who the bleep flagged python is ruby done right

are you freaking kidding me guys

Mr. Xcoder

Who flagged that?

Step Hen

@Mr.Xcoder more like they get a ton of questions and they don't have enough people to answer them :P

Almo

@Riker who the hell flagged this

Mr. Xcoder

5:41 PM

@StepHen Nope, 1 question in 10 mins is the average

Some Ruby lover, prolly

Step Hen

@Mr.Xcoder average what, SE-wide?

Almo

>:(

Mr. Xcoder

@StepHen No, Physics.SE

Step Hen

@Mr.Xcoder ... are you saying that's slow?

Almo

BTW what's the name of this channel refer to?

Mr. Xcoder

5:43 PM

@StepHen Yes, compared to SO and M.SE, very slow

Pavel

The bar at the end of a golf course is traditonally called The Nineteenth Hole

Almo

oh yeah!

Pavel

And we're Code Golfers

Almo

thanks :)

AdmBorkBork

43

A: Let's think of a creative name for our chatroom

Well, the traditional generic name for the country club bar is "the nineteenth hole", which suggests The Nineteenth Byte or something like that.

Mr. Xcoder

5:43 PM

@Almo Apart from that, the thing is that The Nineteenth Byte is exactly 19 bytes long

Almo

yeah that's really cool

:)

Conor O'Brien

@ConorO'Brien ... capital letters in constants such as True, False, None, the weird while...else or for...else constructs that almost no one uses. I think I should do a "programming sins" like "cinema sins", that'd be kind of fun(ny) :P

totallyhuman

ok point for capital constants

Step Hen

@ConorO'Brien wait, you don't like classes?

Mr. Xcoder

@ConorO'Brien I agree on ternaries and classes.

totallyhuman

5:45 PM

that's one of the dumbest things of python

Pavel

Also, visiting TNB causes an equal if not greater drop in productivity as visiting a pub.

8

Mr. Xcoder

^^

totallyhuman

and don't you dare perform a sed substitution on my message

Step Hen

@totallyhuman s/of/in/

AdmBorkBork

@Pavel I'm plenty productive here

Conor O'Brien

5:46 PM

@StepHen I love classes. Python is an abomination to classes basically

AdmBorkBork

Just what I'm producing is up for debate.

Mr. Xcoder

:I I kinda like the lack of safety (types)

Step Hen

@ConorO'Brien Yes, but it's better than JavaScript...

Pavel

@AdmBorkBork In the same way that visiting a pub makes you produce vomit?

Mr. Xcoder

@Pavel You know, we're golfing productivity

AdmBorkBork

5:46 PM

Sure.

totallyhuman

ಠ_ಠ magic functions are perfectly done

@StepHen ...ಠ_ಠ

Conor O'Brien

@StepHen no, actually, it's not.

because js doesn't have classes

Step Hen

@ConorO'Brien well the classes in Python are better than the prototype stuff in JS

which is what I mean

Leaky Nun

Arabic doesn't have the g sound :o

Pavel

As far as I can tell, JavaScript has dictionaries disguised as objects.

totallyhuman

5:49 PM

^

they don't even hide it :P

Mr. Xcoder

@LeakyNun :0 Really?

Leaky Nun

@Mr.Xcoder yes

Pavel

Which is why the most common way to serialize a dictionary in any language is as JSON.

Step Hen

@Pavel I thought you said classes, my bad

totallyhuman

in some ways, even classes are objects lel

Step Hen

5:51 PM

@totallyhuman yes but they are first functions in JS (and then functions are objects) :P

Pavel

In C#, everything is an object.

officialaimm

@LeakyNun g as in grand?? or germany?? There is a throaty sounding equivalent to g(grand) I think..

Step Hen

they only reason JavaScript can even simulate classes is closures

Conor O'Brien

should I even try talking about javascript

Leaky Nun

@officialaimm the hard g, as in grand.

totallyhuman

5:52 PM

no pls don't

Step Hen

@ConorO'Brien don't get offtopic, one at a time

Conor O'Brien

aight, have fun being unenlightened :P

totallyhuman

i'm afraid your walls of text are some times too much :P

Pavel

In Java, ints, chars, etc. or primitives and not object, however while C# does make the distinction between value types and reference types, it still consideres everything to be either a struct or object.

totallyhuman

and in JS...

Step Hen

5:52 PM

@Pavel in JS ints are floats and floats are objects

Pavel

There is no difference between an int and a struct foo { int a; }

Except the way you get the value.

totallyhuman

what even is a struct trying to be

Conor O'Brien

in short: prototypes are awesome; objects are not dictionaries, they are glorified hash tables; primitives are not objects, and "classes" are objects with prototypes

officialaimm

@LeakyNun are you learning arabic?? I like the three-syllable thing in arabic... Do you know about that?

Pavel

@totallyhuman A class that you can pass by value instead of by reference.

@ConorO'Brien Isn't a Dictionary a generalized hash table?

Leaky Nun

5:54 PM

@officialaimm I'm not learning arabic but I have heard of the triliteral roots

Conor O'Brien

@Pavel yes

Pavel

So....

Leaky Nun

e.g. k-t-b means everything from book and write to author

Stewie Griffin

14

Q: Optimal path through a matrix

Given a matrix consisting of positive integers, output the path with the lowest sum when traversing from the upper left element to the bottom right. You may move vertically, horizontally and diagonally. Note that it's possible to move both up/down, right/left and diagonally to all sides. Example...

code-golf number graph-theory optimization matrix

Leaky Nun

the difference lies in the vowels

Stewie Griffin

5:55 PM

Is it a dupe? ^^

@WheatWizard I disagree. Apart from the mostly superficial differences that this challenge allows for diagonal movement and all positions are reachable, the other challenge requires return of the path itself rather than just the cost of the path. Unless you're using built-ins that return both, the code is not interchangeable. — beaker 1 hour ago

Leaky Nun

(this is why Arabic/Hebrew don't really write out every vowel, because the main meaning is in the consonants)

Mr. Xcoder

@StewieGriffin IMO it is

Leaky Nun

@officialaimm you see, my messages are split

Step Hen

@StewieGriffin I don't think so, output formatting for the other one was weird and probably a lot of the bytes

AdmBorkBork

In PowerShell, even number literals are objects.

Mr. Xcoder

5:56 PM

But I don't have such strong opinions

AdmBorkBork

Step Hen

@LeakyNun but Arabic isn't golfy, it's way too many bytes...

Leaky Nun

@StepHen ...

Step Hen

@StewieGriffin actually let's close the old one as dupe

Stewie Griffin

@StepHen I don't think it's a dupe either, but I'm biased towards my own challenge of course...

Mr. Xcoder

5:57 PM

Anyone into bitwise stuff? Any shorter way for (1-s), other than -~-s?

Step Hen

@StewieGriffin the output format is wonky and it only has one answer, plus it's got an unrelated title

Conor O'Brien

@Mr.Xcoder --s maybe? :P

Leaky Nun

@ConorO'Brien Python

Conor O'Brien

e_e

Leaky Nun

no, this doesn't even work in C

Mr. Xcoder

5:58 PM

@ConorO'Brien ಠ_ಠ

Conor O'Brien

yeah I know

totallyhuman

wait what language would that work in o0

Conor O'Brien

I thought -~-s looked basically like --s, bad joke :P

Leaky Nun

@ConorO'Brien -~-

Conor O'Brien

lol

Stewie Griffin

6:00 PM

@StepHen I don't think it should be closed as a duplicate of mine to be honest, they're not duplicates in my opinion. It's possible the older challenge is not as good as the new one (I won't judge this), but it shouldn't be closed as a dupe as far as I can tell.

Step Hen

@StewieGriffin yeah I retracted that vote

Leaky Nun

> The pyramids of Giza were as old to the Ancient Romans as the Ancient Romans are to us. When the Pyramids were being built, there were woolly mammoths living in Wrangel Island.

Nathan Merrill

@AdmBorkBork We are very specific (IIRC) with our rules for free flags: They have to be required, and not a "one of these is required, pick one"

but the "pass the size of the cube", while it could be required, it's a "pick one out of many"

Step Hen

@NathanMerrill yep, the meta post I found said that if one is required but there are several options, you don't need to count the invocation ( -) but you do need to count the bytes of the flag itself

AdmBorkBork

So how does that work with Perl, where you pass in the version?

Step Hen

6:06 PM

10

A: Scoring mandatory but varying command-line arguments

They're evidently part of the program, and they're important information so they should be counted. That said, I'd probably count them as 3 bytes (not 5 as would normally the case when you have to add a space, a hyphen and your three characters to the command-line invocation) since the "standard ...

Nathan Merrill

@AdmBorkBork well, future versions always have new releases

I can't just put a future version on a past interpreter and make it work. Therefore, I'd argue that passing the current version is always what you want

while you can pass in old versions, I'd argue that that is no longer "required", and you would need the bytes

As far as unbanning MetaGolfScript, I think you bring up a good point: We either are strict on flags, or we unban metagolfscript. I happen to be on the "strict on flags" party, but I completely understand your side

Mr. Xcoder

@LeakyNun Can you help me golf a Pyth submission?

Leaky Nun

@Mr.Xcoder sure

Mr. Xcoder

@LeakyNun I have this: W<lYQ=+ZJ.Em>3/.BxZd\1Y=+Y*-1J]Z)Y (uses a while because I didn't see any other approach)

0

A: Codegolf the sequence of distance-3 Hamming Codewords (A075926)

Pyth, 34 bytes The algorithm is very similar to the Python answer W<lYQ=+ZJ.Em>3/.BxZd\1Y=+Y*-1J]Z)Y Try it here.

Leaky Nun

@Mr.Xcoder I still haven't worked out the definition of the sequence...

AdmBorkBork

6:13 PM

@NathanMerrill Yeah, I get your side, too. I guess I'll wait to see what Martin responds on my comment.

Mr. Xcoder

Ok, I'll let you figure it out by yourself. I am not entirely sure I understood either, It is kind of a blind port of the Python answer.

Rod saw my golfing suggestion, but didn't edit

>_>

Leaky Nun

@Mr.Xcoder oh I understand it now

Mr. Xcoder

Great

Let me know if you seek golfing opportunities (you probably will :P)

@LeakyNun o_O Thanks a lot!

mınxomaτ

6:28 PM

Play RPS with in in-browser ANN: tenso.rs/demos/rock-paper-scissors

totallyhuman

oh nvm

MD XF

It doesn't link it

We had this discussion last week

totallyhuman

i didn't

:P

MD XF

oh

:P

totallyhuman

pls halp golf lambda s,p:[sum(p[s.index(i):s.index(i)+s.count(i)])/s.count(i)for i in s]

Mr. Xcoder

6:36 PM

@totallyhuman What does it do?

totallyhuman

13

Q: Mario Kart Scoring w/ Ties

I ran into this problem while working on another challenge I'm making for this site. In that challenge I utilize "Mario Kart 8 Scoring". The amount of points the player in kth place gets is represented by this 1-indexed array: [15,12,10,9,8,7,6,5,4,3,2,1]. So 1st place gets 15 points, 2nd place g...

code-golf array-manipulation

Mr. Xcoder

@totallyhuman Just saying, did you see there is a Python solution already, no?

totallyhuman

yes

Leaky Nun

@totallyhuman lambda s,p:[sum(p[s.index(i):][:s.count(i)])/s.count(i)for i in s]

totallyhuman

@LeakyNun ohh that's a good one

@Mr.Xcoder and i just out-golfed it :P

Mr. Xcoder

6:41 PM

How did I miss that challenge?

@totallyhuman Or Leaky did :P

totallyhuman

:P

Mr. Xcoder

@totallyhuman In fact, it is 1 byte shorter :P

totallyhuman

in my world, that's an out-golf :P

Mr. Xcoder

Ok

I thought of a method that might be better... Not Sure though

totallyhuman

bring it on :P

Mr. Xcoder

6:44 PM

Wait, working

totallyhuman

0

A: Mario Kart Scoring w/ Ties

Python 2, 66 bytes -8 bytes thanks to Leaky Nun. lambda s,p:[sum(p[s.index(i):][:s.count(i)])/s.count(i)for i in s] Try it online!

Mr. Xcoder

@totallyhuman I had this, but dividing by length makes it longer: [sum(p[s.index(i):s[::-1].index(i)])for i in s]

totallyhuman

ah nice trick

Mr. Xcoder

@totallyhuman Oh, it doesn't seem to work though

totallyhuman

just 3 bytes longer thouhg

oh... and that

:P

Mr. Xcoder

6:47 PM

@totallyhuman lambda s,p:[sum(p[s.index(i):len(s)-s[::-1].index(i)])/s.count(i)for i in s]

totallyhuman

10 bytes longer

Mr. Xcoder

I cannot remove len(s) for some reason.... oh

@LeakyNun Do you know how I could golf [blahblah:len(s)-x] to [blahblah:<something>x]?

totallyhuman

wasn't it -~ or something?

btw, -~- is a great face

Mr. Xcoder

Oh, 12- works here!

@totallyhuman Dumb me ^

Business Cat

@Mr.Xcoder You want the index from the end?

Leaky Nun

6:51 PM

@Mr.Xcoder parentheses

Mr. Xcoder

Yes

Leaky Nun

@Mr.Xcoder same byte-count though

Business Cat

Then ~s

Mr. Xcoder

@LeakyNun Thanks, I found 12-

Works for the purpose

Leaky Nun

wait, neither works

the middle should be all 7

Mr. Xcoder

6:51 PM

Why?

@LeakyNun No, you may output as a float.

Leaky Nun

@Mr.Xcoder 7 or 6 or 6.83

not 0.

Mr. Xcoder

What?

Leaky Nun

@Mr.Xcoder run it yourself

Mr. Xcoder

@LeakyNun [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] gives

[6.833333333333333, 6.833333333333333, 6.833333333333333, 6.833333333333333, 6.833333333333333, 6.833333333333333, 6.833333333333333, 6.833333333333333, 6.833333333333333, 6.833333333333333, 6.833333333333333, 6.833333333333333]

.

Run it yourself.

Not sure what you mean

Yours fails.

Leaky Nun

never mind

ignore it

Mr. Xcoder

6:54 PM

Posted, golfing (hopefully)

Leaky Nun

why doesn't it work without the 12?