The Nineteenth Byte

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00:10

0

Shifting digit rectangle code-golfkolmogorov-complexity Output the following text: 0000000000 1111111111 2222222221 3333333322 4444444332 5555554433 6666655443 7777665544 8887766554 9988776655 Here is an image with colors to make the pattern more clear: Rules You can't take any input Ou...

Zacharý

@Pavel Variant encompasses all types, whereas the tagged union doesn't.

@Mendeleev, HELLO! I haven't seen you in a while!

Conor O'Brien

00:27

@Pavel variant is a bit bloated, a tagged union is more controllable and visible

Zacharý

@ConorO'Brien would a struct containing an Algebraic be okay?

Conor O'Brien

yeah probably

Zacharý

It works for the code that I had problems with, so I'll go with it ... as soon as I figure out how to opDispatch everything to the value contained within the struct.

Is there an equivalent to Python's f(*a)? Or do I have to hack it together with std.functional.partial

Conor O'Brien

what's your use case?

Zacharý

Forwarding everything so a field (I think that's the name...) of the struct can handle it.

Conor O'Brien

00:38

"everything"?

Zacharý

struct Test {
        private Algebraic!(Complex!double, dchar, Test[], Test delegate(Test[])) value;
	// ...
	public auto opDispatch(string s)(...) {
		// HERE
	}
}

I want the opDispatch to pass whats in ... to value

Zacharý

01:02

Mostly because I don't want to have to rewrite all those methods/operator-overloads, but I may have to.

@ConorO'Brien, you find the "cannot convert ... of type ulong to int" message to be annoying as heck too, right?

Conor O'Brien

its reasonable

did you try auto opDispatch(string[] s...)?

you could try a tempalte

Zacharý

And how would any of those work?

I might actually just do all the overloads manually anyway, since due to opUnary and opBinary it's possible to do them en-masse.

Conor O'Brien

well I'm still not sure what your use case is

are you trying to initialize the algebraic?

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Play a Game of Balls Bounce code-golfgame The game Balls Bounce consists of the following: a number of blocks, each containing a \$durability\$ number \$\geq 1\$ a field of dimension \$h \times w\$, partially filled with blocks (field is \$9\times 7\$ in the example) a number of \$balls\$, ...

Zacharý

01:32

I can just use This, I don't even need the struct, facepalm

Zacharý

01:45

Found just what I needed

Zacharý

02:30

I have to type all the operator overloads out by hand: it's time like these I really wish D had macros.

dzaima

02:41

@Zacharý I wonder how bad would it go if you just passed D code + macros trough Cs preprocessor

Zacharý

I'm done coding for today: I have a bash script somewhere for that

New Sandboxed Posts

02:56

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A: Sandbox for Proposed Challenges

Print a straight alkane with n of carbons code-golfascii-artchemistry An alkane usually follows a pattern like this: H H H H H H | | | | | | H-C-C-C-...-C-C-C-H | | | | | | H H H H H H Given the number n, output an alkane with n number of carbons. Rules: You only u...

New Sandboxed Posts

08:32

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A: Sandbox for Proposed Challenges

How Long Until 0 Inspiration Inspired by this challenge. Given a positive integer (K) Output a uniformly-random integer (Y) between [0, K). If Y > 0 Assume K = Y and repeat the process until Y = 0. Challenge What is the average number of iterations needed to reach zero for a given n...

Taylor Scott

11:28

vote to delete>

?

-3

A: Print the Periodic Table

Text, 3148 bytes _____ _____ | 1 | | 2 | | H | ...

Adám

11:54

@TaylorScott Why?

Fatalize

I guess because Text is not a programming language according to PPCG's consensus definition of programming languages

Erik the Outgolfer

but the consensus is now obsolete, isn't it

Fatalize

But to be honest I don't really see much difference between this answer and any other compression based answer

mınxomaτ

@Fatalize It's allowed for constant output challenges.

Fatalize

In that case no reason to delete it

3

Adám

12:05

@Fatalize But then we should tell the OP.

Fatalize

about what?

mınxomaτ

Reference for reference

New Main Posts

0

Q: Find LCM of an array

You have to find the least common multiple of an array (LCM). Any language is allowed. Try to make your code as succinct and short as possible

Erik the Outgolfer

another reference

Taylor Scott

12:39

@Adám Sorry for the delay - because "text" is not a programming language as per the meta definition, I did think that it would be protected under the fixed output rule as it is not a, strictly speaking, graphical output and that context is not discussed therein

Most importantly, because I believe that copying and pasting the program spec and posting it as a solution is actively contrary to the spirit of code-golf.

New Main Posts

-2

Q: Help me please. I am trying to understand how this code works in order to extract png chunks and what exactly I should do

This is my file name: e631a26.png This is my code: // Simple PNG parser. Can be used to discover and extract hidden chunks. // Minimal error handling, does not play well with malformed chunks and doesn't // check chunk CRC32 checksums. package main import ( "encoding/binary" "encoding/...

code-challenge c

New Sandboxed Posts

13:05

0

A: Sandbox for Proposed Challenges

Timer simulator code-golf string time I would like to simulate a timer as if it were displayed in a screen like this one: This 7-segment display only shows four digits, with a separator between the second and third digits. For our purposes, that separator can be configured to show as a colo...

user202729

14:35

@Adám I think that the downvotes are sufficient for "telling the OP".

The consensus doesn't (or don't?) say it should be deleted, so no reason to delete it.

We have a serious contender rule, but it doesn't really apply here, as it's the shortest possible in Text.

And we don't have any low-effort rule. Really. Not that I'm saying that we should not have it, but it's too subjective.

Cat Wizard

15:23

I don't get why people want to delete that answer. Not every bad or lazy answer has to be deleted.

Poke

@CatWizard or downvoted

Cat Wizard

No I disagree there. Every lazy or bad answer should be downvoted.

ATaco

What's lazy though?

As in, no attempt to golf?

Cat Wizard

No, lazy as in took very little time or effort to produce.

Like the dictionary definition of lazy.

ATaco

Most of the "add two numbers" question should be downvotes then :p

Cat Wizard

15:31

Yes

Most <s>of the "add two numbers" question</s> answers should be downvoted then.

ATaco

The least they could have done is written something like PHP instead of just "Text"

Cat Wizard

That wouldn't really have made it any better, would it?

Pavel

16:23

# Question: If I have a statement like this:
with open(file, 'r') as file:
    text = file.read()
# Is `text' still in scope at the end of the with block?

Riker

@CatWizard avatar suggestion: i.redd.it/6th791lz64911.jpg

6

ah look slike you just changed so maybe just save this one

Zacharý

D freaks out when I try to do an operation on invalid types ... that means I have to go through each and every operation manually to check for types, rather than using C's macros

DJMcMayhem

16:45

@CatWizard This isn't even an answer. It's just copying the challenge.

Do we really need a rule stating that we don't want answers like that, or could we just use common sense that answers like these add nothing to the site?

Cat Wizard

@DJMcMayhem How is it not an answer?

Zacharý

@Riker ô_ô

DJMcMayhem

How is it an answer?

Adám

CMC: f(n) = 1978 for n=1, 1993 for n=2, 2007 for n=3, 2020 for n=4…

Zacharý

@Adám What is this for??

Cat Wizard

16:49

@DJMcMayhem I does the task? What more can possibly be required of an answer?

Adám

CMQ: Find what sequence that ^^^ is

Zacharý

It's some quadratic... I think

mınxomaτ

TIL Google collab has free GPU support for Jupyter: colab.research.google.com/notebooks/gpu.ipynb

Cat Wizard

@DJMcMayhem We already have one and it is here.

DJMcMayhem

Why are you fighting so hard to keep around a garbage answer?

Cat Wizard

16:55

Because I don't think it is right for an answer to be deleted when it complies with site policy.

mınxomaτ

I don't like the answer, but I agree.

Cat Wizard

That's what downvotes are for.

Zacharý

@Adám f(x)=1/2*(-x^2+33*x+3924). Does it have any significance?

Adám

17:23

@Zacharý Yikes, that one ugly formula. How about 1962+1⊥17-⍳? And yes, it is the year of HOPL n.

Zacharý

... is it weird I know how to program 4 languages from HOPL I?

Adám

@Zacharý APL, BASIC, FORTRAN, LISP?

Zacharý

Yeah, those are the four.

Taylor Scott

Huh, I've never heard of Jovial - anyone know where I can practice it - my google-foo found nothing

Anonymous

17:43

I love how half of this site's community begs .*Wizard to stop using horrifying avatars, while the other half encourages it by suggesting new horrifying avatars. Perfectly balanced, as all things should be.

Taylor Scott

#ThanosDidNothingWrong

Pavel

I missed the snap livestream yesterday feelsbadman

Taylor Scott

What about High Performance Fortran from HOPL III? it seems that most of the site for that language is dead

@Pavel I lived. :/

Pavel

I did not.

Taylor Scott

feelsbadman

Pavel

17:47

I did get reddit gold by commenting "hi" in a thread though

Taylor Scott

lol

are you inthesoulstone now?

Pavel

yes

Taylor Scott

nice.

flawr

@Riker /r/mathmemes/

Adám

Massive programming language family tree:

… with just exactly too low resolution to be usable.

Pavel

17:50

This is my second time getting gold. The first time was when I commented on a thread telling a guy you can unpack archives with tar -xvzf foo.tar.gz. I don't think a question googleable in five seconds is worth five of anyone's dollars, but ¯\_(ツ)_/¯ not complaining

Adám

@Zacharý So Morten Kromberg and Roger Hui were chosen to present APL for HOPL IV, which means that next APL presentation will be at HOPL VII in 2053.

Pavel

@Adám What's HOPL?

Taylor Scott

history of programming languages

History of Programming Languages

History of Programming Languages (HOPL) is an infrequent ACM SIGPLAN conference. Past conferences were held in 1978, 1993, and 2007. The forth conference will take place in June 2020. == HOPL I == HOPL I was held June 1–3, 1978 in Los Angeles, California. Jean E. Sammet was both the General and Program Committee Chair. John A. N. Lee was the Administrative Chair. Richard L. Wexelblat was the Proceedings Chair. From Jean Sammet's introduction: The HOPL Conference "is intended to consider the technical factors which influenced the development of certain selected programming languages." The...

From that - does anyone know anything about JOVIAL or High Performance Fortran? They seem like cool programming languages, and I would hate to find out that they are actually dead

JungHwan Min

Dang, someone answered this question codegolf.stackexchange.com/a/168361/60043

It looks valid, but I haven't tried deleting every single byte.

DJMcMayhem

I'm pretty sure if you delete every single byte it won't print anything :P

JungHwan Min

17:59

English is not my first language, okay -.-

Touche

Pavel

The end times cometh

DJMcMayhem

@JungHwanMin haha, I'm sorry. You didn't say anything wrong

It's just an ambiguous sentence

@Pavel They forget something on the schedule:

November, get around to PPCG

FreezePhoenix

Morning

JungHwan Min

Good afternoon

New Main Posts

1

Q: Black Box Trigonometry

Write a program or function that can distinguish the following 12 trigonometric functions: sin, cos, tan, asin, acos, atan, sinh, cosh, tanh, asinh, acosh, atanh. Your program is given one of the above functions as black box and should output the function's name as given above. This is code-go...

code-golf function trigonometry

DJMcMayhem

18:02

Good... Noon?

Pavel

Good almostnoon

(I wouldn't call 11 morning)

FreezePhoenix

Good Morning, I'm gonna close this tab because Chrome can't take this many chat tags open... If you need me, just ping me

Pavel

Good day, sir.

JungHwan Min

Huh, it looks like the radiation-hardened quine was copied from someone else

shinh.hatenablog.com/entries/2014/02/20#1392834649

the entry looks identical to this

Hmm

Cat Wizard

18:28

1

A: Sandbox for Proposed Challenges

Existential Golf Math has a lot of symbols. Some might say too many symbols. So lets do some math with pictures. Lets have a paper, which we will draw on. To start the paper is empty, we will say that is equivalent to \$\top\$ or \$\textit{true}\$. If we write other things on the paper they...

The challenge is now technically complete but It still needs polish. Any thoughts?

JungHwan Min

@CatWizard this is a very small pet peeve of mine, but could you use \implies instead of \to? It figuratively hurts when I see a single arrow being used to mean "implies."

Cat Wizard

@JungHwanMin No, implies is actually a different symbol. implies is a meta-logical symbol. Using it would be innacurate.

However I might want to use \rightarrow instead of \to

JungHwan Min

Interesting. I have yet to learn this topic.

I stand corrected.

Cat Wizard

For mathematicians \implies will almost always be the correct symbol (and it rarely matters anyways) but for logicians they should be kept distinct

FrownyFrog

18:56

@JungHwanMin uuunacceptable!!

Riker

@flawr 10/10

> Our lord and savior -1/12

JungHwan Min

@Riker Please not again. I had enough of 1+2+... = -1/12. >:(

3

Riker

did you try convolution? I've heard it helps

Zacharý

Is 315+ lines for just overloading operators normal?

Riker

depends

is this java?

and is this for a a language you're making or something, or a production language/

dzaima

19:07

@Zacharý what operators are you overloading? Like all normal math ones so you can e.g. add RAD arrays with just a+b?

Zacharý

@dzaima ... no. Just making it so the Value struct can actually be operated on, because Algebraic!(...) doesn't overload pretty much any operators at all...

@Riker It's a rewrite of RAD in D.

Here's what I have so far

dzaima

@Zacharý I have no idea what I'm looking at but it feels horrible

flawr

@JungHwanMin this time it is 1 + 1/2 + 1/3 + 1/4 + ...

Zacharý

@flawr ?

flawr

@Zacharý the harmonic series

Zacharý

19:21

@flawr I know that ... but why did you say "this time it is ..."

flawr

@Zacharý well it is not the natural series 1 + 2 + 3 + ... as @JungHwanMin feared

Zacharý

._.

Adám

19:37

@Zacharý I assume NIY is Not Implemented Yet? I.e. Dyalog's NONCE ERROR. K uses niy.

New Sandboxed Posts

19:48

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A: Sandbox for Proposed Challenges

Kissing number approximation code-golf geometry approximation Given a number from 1 to 24, output the kissing number to the best of current knowledge (some numbers will have more than one acceptable output). From the Wikipedia page on the Kissing Number Problem: a kissing number is defin...

trichoplax

I feel like this must be already done or trivial. I can't find anything searching the site for 'kissing number'

Zacharý

@Adám Did I type NIY somewhere? I remember typing NYI.

But yes, NYI is NOT YET IMPLEMENTED.

Adám

@Zacharý No, typo on my part. You seem to have NYI everywhere, which I wanted to contrast with K's niy. And I failed.

Zacharý

Decision: NIY will be for atoms that are not yet implemented in RAD, where as NYI is for D code that I haven't implemented yet (something the user should not really see)

ngn

@Adám it's nyi in k too

Zacharý

19:55

NYI = something happend in D's code, NIY = something happened in your RAD code.

caird coinheringaahing

Another rocket launch if anyone's interested

Adám

@ngn Yeah, I messed up.

Poke

this is on hnq but i lol'd money.stackexchange.com/questions/97274/…

trichoplax

20:18

> and password

Pavel

I'd never seen that SE before

They have a nice design

Laikoni

@cairdcoinheringaahing This launch was already over a week ago: blogs.nasa.gov/kennedy/2018/06/29/…

caird coinheringaahing

@Laikoni ¯\_(ツ)_/¯

Erik the Outgolfer

@cairdcoinheringaahing those happen all the time :P

Pavel

21:54

Anyone know how I tell python setuptools to run a command (e.g. make) before installation?

Riker

22:45

why did I get stars for mentioning convolution lol

@Poke I just saw the title and starting cracking up

Anonymous

23:50

13

Q: How to perform custom build steps in setup.py?

The distutils module allows to include and install resource files together with Python modules. How to properly include them if resource files should be generated during a building process? For example, the project is a web application which contains CoffeeScript sources that should be compiled ...

python setuptools distutils

Anonymous

That's for distutils, but the process should be similar for setuptools

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