The Nineteenth Byte

quartata

12:05 AM

I don't know what's going on but in the last year or so WolframAlpha has been so slow it's completely useless

2-3 minutes for simple calculations

Pavel

@quartata No repro

ETHproductions

12:27 AM

coming back to an idle JSFiddle:
me: functio--
JSFiddle: *saves*

Zacharý

LOL.

ETHproductions

I haven't used it in a while and was surprised when it autosaved, especially when I noticed it doing it every 60 seconds or so. I've been working on a project for ~45 minutes and I'm already at jsfiddle.net/project/30

Zacharý

._.

ETHproductions

32 now

if there was ever such a thing as "aggressive autosave", this is it, lol

Nathan Merrill

12:51 AM

@ETHproductions my personal favorite autosave is how Jetbrains does it: it saves every time it loses focus

Zacharý

ð_ð

Zacharý

1:17 AM

:Ð

"Agressive autosave" would be after every change

Pavel

1:32 AM

Jetbrains doesn't even have a save button

Zacharý

ọ_ọ

Zacharý

2:37 AM

Hey, if @Adám were mod: his diamond would be ⋄.

New Main Posts

3:13 AM

-1

Q: How to define an array of chan with Golang?

I attempt to start a group of goroutine for reusing (similar to thread pool). And I need to manage a group of channel in main goroutine, so that communication between main goroutine and particular grouped goroutine is possible. How to manage such a group of channel ? I did not find a solution. ...

go

New Main Posts

5:14 AM

0

Q: Number Game: Generate an incremental number from a variable number using jquery

This game is for you to have a little fun. As a result, the answer does not need to be precise, and there could be several correct answers to this problem. However, the simplest and shortest answer will win. The reason this is a game, which has some practical value, rather than a problem, is bec...

code-golf code-challenge game

-7

Q: Enjoy answering the questionnaire to receive special health packages for free!

Don’t miss a special activity from Health and Wellness project by Tourism Authority of Thailand We kindly invite you to answer the questionnaire and express your own opinion about information usage on www.tourismthailand.org/healthandwellness. As soon as you answer the questionnaire, you will ha...

maze

Fatalize

8:07 AM

Despite numerous attempts by PPCG to ruin my productivity, I just finished writing my thesis. I won't thank you guys :p

3

Kroppeb

I always like it when brachylog beats other languages

Fatalize

@Kroppeb Doesn't happen a lot though

Kroppeb

It's always with a certain type of questions

Mr. Xcoder

@Adám 05AB1E, 8 bytes: Try it online!

@Kroppeb ahem decision-problems ahem

Kroppeb

where you have constrains on the output and input is part of the output do well

Leaky Nun

8:11 AM

> “To my wife Marganit and my children Ella Rose and Daniel Adam without whom this book would have been completed two years earlier.”

― Joseph J. Rotman, An Introduction to Algebraic Topology

9

@Fatalize ^

Fatalize

@LeakyNun It's a bit less sad when it's because of your family and not because I wanted to implement a golfing language :p

Leaky Nun

lol

Blue

You sure? A golfing language is pretty important

Fatalize

eeh…

Mr. Xcoder

An explanation of my 05AB1E CMC answer: first gets the prefixes of the input list, then retrieves the first element in that list (using dot-delta) that satisfies the criterion that: its cycling (infinite list repetition) equals the cycling of the input.

Adám

8:17 AM

@Mr.Xcoder That sounds predicate'y. @Fatalize hint hint

Fatalize

@Adám I was just reading your CMC

Adám

@Zacharý WOnder if I would be allowed to change my username to Adám ⋄

Mr. Xcoder

Diamonds are not allowed in names IIRC

Adám

@Mr.Xcoder Even hollow APL diamonds?

Mr. Xcoder

IDK.

A theoretical solution exists in 05AB1E at 7 bytes. But it will never work in practice.

Emigna

8:23 AM

@Mr.Xcoder How about this?

Neil

@Adám Charcoal, 21 bytes: Ｉ✂θ⁰⊕§ΦＬθ⁼θ…✂θ⁰⊕ι¹Ｌθ⁰

Mr. Xcoder

@Emigna I forgot ∍ is a thing. Thanks!

Emigna

Out of curiocity, what was the theoretical one?

Mr. Xcoder

@Emigna η.ΔÞsÞQ

It does not work in practice because Q cannot compare two infinite lists

dzaima

@Adám Canvas, 12 bytes where 5 of those are just for making sure only the 1st occurrence is returned..

Emigna

8:32 AM

Ah, right. I was just looking at Þ and figured you meant something using it :)

Kroppeb

@Adám 6 bytes brachylog Try it online!

Adám

@Kroppeb Now we're talking!

Fatalize

lol

I only had 7 bytes

~a~jġ=h

totally different

Kroppeb

cool

Fatalize

@Adám To be honest that could have been a real challenge and not a CMC

Adám

8:42 AM

@Fatalize Thanks. Did you see my idea for an even more complex one?

Fatalize

Nope

the one about APL?

Adám

@Fatalize Yes. APL's ⍴ infix function reshapes cyclically. E.g. 5⍴1 2 is 1 2 1 2 1. Given a list, return the shortest possible expression a⍴b⍴c⍴…⍴z

Fatalize

What would 4⍴3⍴1 2 do?

[1,2,1,1]?

Adám

@Fatalize Yes: tryapl.org/?a=4%u23743%u23741%202&run

Fatalize

(I have a hard time understanding why ⍴ is given such behaviour. Is it really that useful??)

Adám

8:48 AM

@Fatalize Rho for Reshape. And yes, it is one of the most fundamental and commonly used primitives in APL.

@Fatalize Not so much because it cycles, but it makes multi-dimensional arrays too, like matrices and 3D arrays.

dzaima

9:10 AM

@Adám I feel like brute force would be the best option there, because e.g. 1 2 1 1 1 1 1 1 1 1 is shorter than 10⍴9⍴8⍴7⍴6⍴5⍴4⍴3⍴1 2

Adám

@dzaima also, how do we determine that is indeed the shortest?

dzaima

@Adám try all the possibilities before it ¯\_(ツ)_/¯

New Main Posts

11:44 AM

2

Q: Let's draw the Triforce

The Triforce is a fictional artifact in The Legend of Zelda, made of three identical-looking equilateral triangles representing power, wisdom and courage. Several games in the saga include an animation when the three parts finally join together. The purpose of this challenge is to draw a single ...

code-golf ascii-art

Adnan

@Mr.Xcoder I think η.ΔÞ¹Å? works as well

Mr. Xcoder

@Adnan Nice, Emigna also came up with 7:

3 hours ago, by Emigna

@Mr.Xcoder How about this?

Adnan

nice, perhaps .Δ should be a one-byter

Mr. Xcoder

12:11 PM

@Adnan I was also thinking about that. 1. it is equivalent to <iterable><filter>...}<head> 2. handles the empty case 3. works for infinite lists and 4. It can be a replacement for 1<mu> sometimes in combination with <infty>

dzaima

1:33 PM

wat why does [].indexOf.bind(arr) work differently than c=>[].indexOf.bind(arr)(c) ಠ_ಠ

JS please explain
https://tio.run/##fVLZUhNREH3PV2DcEpVBUXEB3Pd9XyCoMSQYDAkmIW5ozaCOCYsmMEOCoLiAC6DsCUhfHobiVf6hf@B8At7EwifLqvvQVX1u9zmnT7075o54wv7GaHEwVOtdjrnDRR5ZNLrrvEWVRXbWxqxZa8KaZG2KtWnWsqzlWJthbdbKuoKgNlAHKA5KgOZAAqIX4i2oD/SO1bGFGdA8p1tYT7KeYr2T9S7WDdbNolUu@@o1a9etdzg3bNxUrJRs3lK6ddv2sh07d@0ur6jcs3ff/gMHDx0@cvTY8RMnT50@c/bc@QsXL12@cvXa9apql6vmxs1b7tueWq@v7o6//m6gIRhqvBeORJti9x88fPS4@clTNtrZSLJhsJFho4@NATZG2JhiU75pNrNs5thsY72b9TTrGdZ7FtILOWvcGrbmODHAiUFOfODEe9AH0EfQJ9AAaBD0GfQF9BX0DTQEGgaNgL6DfoBGQWOgcdAEaBI0BZoGZUE5kHRiFvQTQoNogXgG8RziBYQO8RIiDpGAaIVog2iH6IB4BfEaIgmRguiE6IIwIEyIbog0R…

oh I'm stupid it's that multiple parameter thing again :|

Luis felipe De jesus Munoz

2:02 PM

Is there some brainfuck visual interpreter or something like that? somewhere where you can see the cells in use and their values

Adám

@LuisfelipeDejesusMunoz The bf interpreter that comes with Dyalog APL.

@LuisfelipeDejesusMunoz Try it online!

@LuisfelipeDejesusMunoz You can also uncomment one line to enable full tracing: Try it online!

Luis felipe De jesus Munoz

cool. Anyway I found one more "graphical"

fatiherikli.github.io/brainfuck-visualizer

dzaima

@LuisfelipeDejesusMunoz I made one once a while ago since ^ had a limited number of cells but it's currently unpublished

Adám

@LuisfelipeDejesusMunoz Can you not start it with a non-zero tape?

dzaima

@Adám why would you want to do that? The tape initialization part is the hardest part of bf :|

I mean for playing around, sure, but for golfing I'd say it's better to not rely on that

Adám

2:19 PM

@dzaima Isn't the tape the input in challenges?

dzaima

@Adám no, the input is given by a different character - ,

Adám

@dzaima oh

dzaima

(well, the tape is a valid input method IIRC, it's just not the standard. The tape usually starts out as all 0s)

Adám

@dzaima The Dyalog one has "unlimited" tape.

dzaima

2:39 PM

@Adám the pointer's not kept trough multiple executions though

Adám

@dzaima Ah, you're right. I guess the uncommenting method is the right way to get visualisation then. It should have had an additional argument and result for the pointer.

Still, a production language with BF in its "standard" library. Think of all those stiff-collared offices that have BF installed on all their computers :-)

Erik the Outgolfer

@Arnauld yeah, but how is the meme related to the actual challenge? also, who knows when a "newfriend" will actually come and pull our mouths wide open with an answer to the challenge? :P

@EriktheOutgolfer This is a meme. And by the way: MathJax can triforce: \${\small△}^{\large△}{\small△}\$ :) (more or less) — Arnauld 2 mins ago

Pavel

3:07 PM

Is a Windows shortcut a symlink or something else, does anyone know?

Adám

@Pavel It is a proper .lnk file which contains information on where it is pointing. .lnk files are recognised by Windows and treated appropriately.

dzaima

@Pavel it's just a fancy file

Arnauld

3:58 PM

@EriktheOutgolfer For some reason, I didn't get pinged (or, more probably, I didn't notice). Since the meme is about drawing the Triforce properly -- and so is the challenge -- I think it's actually fitting pretty well. I've since decided to update the title, btw.

Erik the Outgolfer

@Arnauld the inbox doesn't ping you when you have no chat.SE tap open ;-)

also, you can use MathJax in the title, it won't make the challenge more unsearchable

Arnauld

I was not sure if MathJax in titles is rendered correctly everywhere. It seems like it does not work in HNQ, for instance.

Erik the Outgolfer

well, there's no other way to Triforce in a title, so... :P

Arnauld

I wonder if there's a better way to Triforce in MathJax, though. This one is not looking all that good.

Erik the Outgolfer

yeah, you can't put images in the title :-/

New Meta Posts

4:14 PM

0

Q: Should we upvote/accept unclear answer on meta?

Currently some answers to (meta questions asking whether something is allowed) stands on both side, and some are highly voted and accepted because people standing on both side think it on his/her own side. Easily fall into, but should we? If not, what to do with such thing?

discussion meta

Mr. Xcoder

@LuisfelipeDejesusMunoz copy.sh/brainfuck

@Arnauld $$\begin{matrix} \: \triangle \\ \triangle \:\: \triangle \end{matrix}$$ maybe?

Preview:

$$\begin{matrix} \: \triangle \\ \triangle \:\: \triangle \end{matrix}$$

You can play with the spacing there in order to make it look more centered.

Erik the Outgolfer

yeah, chat doesn't natively support MathJax, only with a bookmarklet

Mr. Xcoder

For those who do not have MathJax

The right bottom triangle is a bit off but adding a bit more space between the 2 triangles should fix that...

Arnauld

@Mr.Xcoder Looking pretty good, but it tends to break the title preview.

Erik the Outgolfer

um, don't use $$?

but yeah, the triangles should be smaller

Arnauld

4:28 PM

@EriktheOutgolfer Oh, of course. You're right.

Mr. Xcoder

Use \tiny or \small. They look much better this way.

NieDzejkob

5:24 PM

Does anyone have a tool for turning whitespace (the programming language) into the opcode notation?

Luis felipe De jesus Munoz

7:09 PM

What would you think about a rock-paper-scissors KoH challenge?

The game would be something like a 1 vs 1 knockout tournament. each round would have 3 sets and the final round 5.

NieDzejkob

sounds like a dupe

Luis felipe De jesus Munoz

yep, I just found a similar one :c

quartata

7:45 PM

you ever go through the paper pile on your desk and find a tweet you wrote down at midnight a month ago so you wouldtn forget it

star if Relatable

AdmBorkBork

I don't tweet. Star if relatable.

29

quartata

its really not, sorry

Poke

8:16 PM

I don't have twitter

so I guess I don't tweet

+1 from me, adm

AdmBorkBork

Yay! In your face, quartata! :p

Erik the Outgolfer

I tweet sensible stuff. star if relatable

quartata

but see this is what makes a relatable post

now everyone is telling me about themselves

so i win

AdmBorkBork

Mashed Potatoes

Mr. Xcoder

Lesson Number 1: Never argue tweets with quartata.

quartata

8:21 PM

you absolutely can

i own up to my shortcomings:

AdmBorkBork

You can argue anything with anyone, just be prepared to lose often.

mınxomaτ

Trying to bit-bang a PDM audio codec. My attempt at a simple sine wave looks more like modern art :/

Mr. Xcoder

@quartata But ~~you~~ one will absolutely never win :)

AdmBorkBork

@mınxomaτ That's actually really cool looking.

Mr. Xcoder

you as in whomever argues with you :)

quartata

8:22 PM

@mınxomaτ thats nice

this was just yesterday, in fact

I was discussing with Riker what would be the one post you would want to be banned for

Pavel

8:39 PM

Does anyone have a better way of updating all pip packages than for i in $(pip list --outdated --format freeze | perl -pe 's/==.*//g'); do sudo pip install -U "$i"; done

quartata

not really

pip isn't that sophisticated when it comes to dependency resolution

any upgrade-all as simple as that is going to screw up dependency versions

Pavel

<-- constantly breaks pip dependencies that insist on having a maximum version

quartata

yeah

mınxomaτ

Oh yes. Finally, usable audio playback, streaming 48k mono samples from an SD card and using PDM for playback - in 2k of RAM :). Looks like this on the scope.

New Main Posts

-1

Q: Count Duplicates

This is actually a hackerrank interview question I have already solved hence sharing knowledge in Q&A style. If the community could give me a better approach for this? Given an array of integers, your task is to count the number of duplicate array elements. Duplicate is defined as two or mor...

array-manipulation

Rushabh Mehta

8:47 PM

Can we get some close votes on the new question. It's obvious the user hasn't figured out what PPCG is.

Pavel

9:06 PM

Has anyone seen Wheat Wizard lately

quartata

he liked my post making fun of james joyce 2 days ago

Pavel

im buying a packet of skittles from all 12 countries on this planet and mixing them all together and eating one skitle at a time while rhythmically chanting /oh now thasta cultural appropriation/

Tweeted by quartatertots on August 28, 2018 at 8:15 PM

@quartata Is ^ a reference or something?

quartata

it is in fact a subtweet

there was a "brit" eating a terrible bagel while bragging about how they were appropriating new york culture on my feed a couple days ago

now i dont know what new york is but if their speciality is frozen bagels then i wouldnt brag about that

Zacharý

10:09 PM

@RushabhMehta That happens a lot. This is closer (at least, easier to turn into a golf) than some others that should directly go to S.O

Anonymous

10:24 PM

@quartata There are a ton of bagel shops in New York, each trying to be fancier than the previous

Riker

10:36 PM

@flawr r/birdsforscale (very cool art, interesting concept)

Zacharý

Too. Many. Subreddits.

quartata

10:51 PM

@Mego im ok with their speciality being Good bagels

this was the original tweet, I found it

Ethiopian coffee. New York bagel. I love a little cultural appropriation for breakfast

Tweeted by DouglasCarswell on August 25, 2018 at 8:07 AM

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