The Nineteenth Byte

2:42 AM

randomra's challenge inspired me to try Collatz in Prelude ^^

?1-(1+       1vv+++ 1-  1-)
      ^(1- )^  #   (2-))^!
        1v-#1#   )(#
         # ^(#

I don't think I'll go for his challenge with it though :P

(partly because this relies heavily on the divisor being 2)

PhiNotPi

@MartinBüttner If there's a language called Prelude, is there a language called Fugue?

Martin Büttner

yes

it's Prelude, but encoded in a midi file

esolangs.org/wiki/Fugue

we definitely need oneboxing for esolangs.org

PhiNotPi

found this gem: esolangs.org/wiki/…

PPCG is like the #1 consumer of esolangs

Martin Büttner

doesn't even sound as bad as it could

PhiNotPi

It could have sounded really bad, but some parts were actually not really bad.

randomra

2:53 AM

is PPCG strictly for challenges or general golf-related questions are allowed too?

Martin Büttner

what... uh... esolangs.org/wiki/2L

@randomra like what?

14

Q: Let's decide what kind of non-challenge questions we want once and for all

4 reopen votes and 1 delete vote is a strange thing to see. It's also slightly worrying that we have so little consensus on this matter. So let's bring the community together. What kind of non-challenge questions do we want? Each answer will contain one type of non-challenge question, some ex...

discussion

randomra

I remember a Doorknob meta post that its allowed but I don't really see any

will read, I remembered another one :)

Doorknob

13

Q: Re-evaluating [tips] and tip-like questions

Currently, all tips questions on the main site are Community Wiki. Furthermore, there are not many other non-challenge questions on the main site. These types of questions are generally supressed on PPCG. This should change. The first point I'm going to attack is the fact that tips questions ar...

discussion new-genre

?

Martin Büttner

there's also

7

Q: Where should non-challenge questions go?

I have a question about programming puzzles or code golf, and it's not a challenge for others to solve. Where should I post it? Return to FAQ index

discussion support faq

randomra

still not that, will look it up

@MartinBüttner neither that :)

Sp3000

2:59 AM

My code for randomra's Collatz is too long :( need a better way of standardising the cycles

Martin Büttner

hm, I'm still trying to figure out a good way to annotate Prelude source code

my newest attempt

?1-(1+                                            vv++1+                  1-                         1-)
                          ^(1- )                 ^ #                    ^(2-)                     ^!
                            1v-#                1#                     (#    )
                             # ^                (#      )

First, we need to         Copy the current      If the value is odd    Else, divide by two.       Print the current value
decrement the current     value to the next     multiply by 3 and      This division code         and decrement before the

Doorknob

Horizontal scrolling is icky though

Martin Büttner

horizontal scrolling? are you on 1024x768? :P

randomra

I read 'Re-evaluating [tips] and tip-like questions' which is the older one and the other is much clearer so only 'competition-related' questions are welcomed

based on the 'Let's decide what kind of non-challenge questions we want once and for all' post

Doorknob

Well, considering answers are 728px wide.

And that most programs will probably be longer.

Martin Büttner

3:03 AM

oh

you meant for answer

no that's just for me

a properly golfed prelude answer can't even be exploded like that

Doorknob

Heh, okay

Martin Büttner

or more like... it can be exploded but it won't necessarily keep working

which is why my recent prelude answers do explode the code but in separate snippets

the above is actually still a working program

randomra

@FUZxxl sorry, didn't noticed your J code (codegolf.stackexchange.com/a/47224/7311) before posted mine

Martin Büttner

(with the comments in there)

that hello world for prelude on esolangs is way too long...

Sp3000

Is there a pure Hello World challenge on PPCG?

Martin Büttner

3:14 AM

I'm sure there is

PhiNotPi

PPCG is all.

Martin Büttner

hm, doesn't look like it

but without all the weird restrictions we've put on it in the past, it would be a rather boring challenge in non-esoteric languages

PhiNotPi

The shortest Hello World program is known in most normal languages.

Sp3000

They all seem to have slight restrictions... From the ones I remember

Martin Büttner

managed to shorten the hello world from 129 to 100

I think there might be an even shorter way (especially with multiple voices), but I don't really understand the second half of the code

also lol... in 3 cases where there's a choice for the order of multiplicands, the code loops over the larger number adding the smaller number in each iteration

I wonder whether a Prelude string printing (code generation) challenge would be even more interesting than "minimal Prelude numbers"

Sp3000

4:58 AM

Oh, I found Python 3.5.0a1

... it doesn't have the [*x] syntax yet :(

grc

new operator though :o

Sp3000

I think that's only for numpy and stuff

grc

oh

Sp3000

Yeah, somehow I wish some of numpy's features were in vanilla Python

x[:,0] would be pretty cool

grc

x[x<0]*=-1 etc. would be nice too

Sp3000

5:10 AM

What does that one do?

grc

it's like np.where

index part of an array where the condition holds

Sp3000

:o

grc

actually that doesn't even work

weird

x[x<0]+=1 works

@Sp3000 wow this looks awesome

Sp3000

That's exactly what I've been waiting for D:

Even in the golf I just posted I could save a few bytes by set() -> {*}

Calvin's Hobbies

6:04 AM

I need two people to each give me a random word, and I'll try to make a challenge involving both.

feersum

random in what sense?

Sp3000

Bookkeeper?

Optimizer

6:25 AM

sexbobomb

Calvin's Hobbies

The Sexbobomb Bookkeeper challenge ... great.

Sp3000

D: mine was a serious suggestion!

Optimizer

"We are sexbobombs and we are here to make you feel sad and think about death and stuff"

@Sp3000 so was mine

this is the most random word I can think of

(and I am sure no body got the reference yet)

Sp3000

Sure can't deny that :P

Optimizer

which part ?

FUZxxl

7:14 AM

@randomra It's okay. Your approach is nicer than mine.

Optimizer

8:25 AM

regex gurus .. match a string if it does not contains XYZ ?

ruby flavor

Sp3000

8:51 AM

In my phone so I can't test, but I'd imagine something like ^((?![^XYZ]).)*$

Optimizer

@Sp3000 yeah, that works :D Thanks!

grc

^(?!.*[XYZ]) maybe?

not sure about ruby though

Optimizer

(except for making [^XYZ] a (XYZ)

Sp3000

Actually ^[^XYZ]*$ might be simpler

Wait is XYZ a string or three chars?

Optimizer

a string

Sp3000

8:57 AM

grc's without the square brackets looks like it should work too

grc

wait nvm

Sp3000

:P not quite

Optimizer

grc's wont work

its only one side lookahead

Sp3000

Hm? I just grabbed my laptop and it seemed to work on regex101

What does it fail on?

Optimizer

ah nvm

Martin Büttner

12:42 PM

@Optimizer I did

@Calvin'sHobbies If in doubt, Jabberwocky

Optimizer

too late

Martin Büttner

do the words have any particular length or letter distribution? or what sort words? nouns, verbs, adjectives?

Optimizer

@MartinBüttner did you like it ?

@MartinBüttner "random"

Martin Büttner

sure

@Optimizer then he should take word list and let his computer choose at random

Optimizer

sure

Martin Büttner

12:57 PM

CarpetPython's challenge looks hard

Optimizer

i did not even understand it

what are those numbers .. what is a rod here ..

It can need better explanations

Martin Büttner

yeah I had to read it a couple of times

basically, picture the numbers describing the heights of hexagonal pillars, like so:

bloody hell

this link upload.wikimedia.org/wikipedia/commons/4/46/…

and then the question asks how much water will be held on top of the hexagons that lower than their surroundings

so in the first examples, there will be a column of water of height 2 on top of the 01 rod, such that the water is level with the 03 rod.

Sp3000

This almost sounds hard enough on a square grid :P

But thanks for the explanation

Optimizer

@MartinBüttner ah. so that is the ground height configuration

(a simple term like that would have cleared things up :) )

and those are tiles. So where no number, its an infinite hole to the other side of the Earth ?

Martin Büttner

well, except it's just a little sculpture, yes :P

Optimizer

1:06 PM

you should be able to do some Mathematica voodoo to get a good 3D blueprint from one smaller example :P

Martin Büttner

I was actually considering that

let me see what I can do ;)

Optimizer

"sugar", "spice" .. and "everything nice"

Sp3000

Hmm on second thoughts this might not be as bad as I thought

But hex grid D:

Martin Büttner

on a square grid it wouldn't be too bad, yeah

Sp3000

1:27 PM

pulls out hex grid code from kingdom builder

Optimizer

creates a hex grid flood fill template in CJam

Martin Büttner

how is this

Optimizer

pretty clear

can you make a gif of rainfall and then water overflowing over the 03 block ?

:P

Martin Büttner

...

Optimizer

..

@MartinBüttner I challenge you to solve this question in Retina

Martin Büttner

1:33 PM

arithmetic that isn't in unary isn't much fun

Optimizer

why will someone upvote that comment ? o.O

Sp3000

Maybe someone else would like to know about such challenges too?

Martin Büttner

1:56 PM

does anyone have some feedback for the prelude syntax checker proposal in the sandbox?

0

A: Sandbox for Proposed Challenges

Prelude Syntax-Checker code-golfstringsyntaxprelude Prelude is an esoteric programming language, which has very few, but unusual, restrictions on what constitutes a valid program. Any block of printable ASCII text is valid provided that: Every column of text contains at most one of ( and ). I...

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