The Nineteenth Byte

Pavel

3:01 PM

> 9gag

Riker

sigh

Pavel

@flawr Is your piano considered a valid language? Can it add numbers?

AdmBorkBork

@Pavel In base 12 I'm sure there's a way

Prime numbers are consonant chords, non-prime numbers are dissonant.

Pavel

@AdmBorkBork Also I just remembered constant output challenges don't need to be answered by a valid language.

J. Salle

Hello everyone o/

Pavel

3:12 PM

\o

AdmBorkBork

Actually, that'd be an interesting CMC. Given a number in base 10, output its corresponding piano chord

Just need to figure out the conversion

Pavel

@ATaco Mathematica has access to the Google Books, which has the Bible in its database. So yes. Mathematica does know about the Bible.

Mr. Xcoder

in Jelly Hypertraining, 12 mins ago, by Mr. Xcoder

CMC: Given a list of positive integers, return those that are closest to another given integer. (if more are closest, you must output them all)

[3, 4, 5, 7, 7, 8, 7], 6 -> [5, 7, 7, 7]

Giuseppe

@Mr.Xcoder MATL, 9 bytes, ti-|tX<=)

Mr. Xcoder

3 bytes in Jelly

Leaky Nun

3:17 PM

@Mr.Xcoder come on

Mr. Xcoder

@LeakyNun 2 bytes?!

Leaky Nun

@Mr.Xcoder no I mean the challenge is just trivial in Jelly

3 bytes

dzaima

@Mr.Xcoder APL, {⍺/⍨{⍵=⌊/|⍵}|⍺-⍵} really should be golfable but I have to do

idk if SOGL will beat APL :p

Ven

could use some forks

dzaima

@Ven I know, I just don't know how to

Ven

3:22 PM

@dzaima You can start off by removing the explicit arguments on the left side: {⍺/⍨{⍵=⌊/|⍵}}|-

Pavel

@Adám How do I find max/min in APL?

Ven

@Pavel of an array? ⌈/ (reduce)

Adám

@Pavel ⌈ and ⌊

Pavel

@Adám I tried that:

      ⌊(2 4 6 3)
2 4 6 3

dzaima

@Pavel ⌊/(2 4 6 3)

Pavel

3:26 PM

Ok

Adám

@Pavel No need for parens there.

Pavel

I'm a bit confused by how / works now but I have to go.

Ven

@dzaima Then you can start fork-ing the left side itself. I think (⊣/⍨(⊣=(⌊/|)))|- is a correct golf of {⍺/⍨{⍵=⌊/|⍵}|⍺-⍵}.

New Meta Posts

0

Q: Why do box drawing characters not display correctly in monospace?

Consider: ┌──┬───────────┬───┐ │hi│hello world│foo│ └──┴───────────┴───┘ In my terminal these same characters look like: Why does this happen given that code blocks are monospace? Is there any way to fix it?

dzaima

SOGL, 22 bytes: A:B{a-θ}¹:χC{c=ēX?bewP

Not the SOGL challenge :p

Ven

3:28 PM

Maybe @Adám can tell me if I can remove some parentheses :)

I think I can remove some by using commute.

dzaima

well gotta go :/

Pavel

@Adám {(⍵-⌊/⍵)/⌈/⍵} works, I think.

Neil

@Mr.Xcoder JavaScript (ES7), 61 bytes: (a,n)=>a.filter(e=>(e-n)**2==Math.min(...a.map(e=>(e-n)**2)))

AdmBorkBork

@Mr.Xcoder PowerShell, a lotta bytes (137) --

param($a,$b)$c=@{};$a|%{$c[$_]=[math]::abs($_-$b)};for($i=0;;$i++){if($z=($c.Ge‌tEnumerator()|?{$_.value-eq$i}).Name){$a|?{$_-in$z};exit}}

-- Try it online!

Adám

@Ven use ]box -t=def to remove unnecessary parens for you.

Ven

3:32 PM

@Adám :O thanks!

> Usage: ]box on | off

ah well, not on tryapl I guess

Adám

@Ven Nope. Full APL and TIO only.

Pavel

3:43 PM

@Adám Usage example please?

Adám

@Pavel Try it online!

Pavel

@Adám Why doesn't tio.run/##SyzI0U2pTMzJT///qLdP/… work?

Adám

@Pavel It does. But -t= doesn't matter when you are not using trains ;-)

Pavel

Oh

<-- has no idea what a train is

Ven

    _____
 ___ |[]|_n__n_I_c
|___||__|###|____}
 O-O--O-O+++--O-O

7

Adám

3:50 PM

@Pavel Trains are sequences of functions, operators, and arrays where the two rightmost items are functions or derived functions.

@Ven Only the last line can be a valid APL train.

Ven

hahaha

Adám

in APL, May 3 at 11:38, by Adám

Trains: Help, Short video, Long video

Neil

technically all you've got there is an engine

Adám

@Neil with a tender. Kind-of a short train, no?

@Ven tryapl.org/?a=O%u2190%u25CB%20%u22C4%20O-O--O-O+++--O-O&run

Pavel

ty

Neil

3:53 PM

that's just the fuel tank though

Ven

@Adám Yes, I remember the examples Dan showcased at APL Paris'16. He then asked us to solve a few of them, and I got them right first :P.

mbomb007

4:15 PM

I awarded my bounty for the Tetris in CGOL question. Next bounty can be put up

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

An Euro-iginal Sequence Given a positive integer n output the n-th number of the euro-iginal sequence. Calculating the Sequence A number is part of said sequence if the number can be made up by using as many different euro coins or notes, but only one of each. Note that you don't have to cons...

Neil

@NewSandboxedPosts I can do this in 32 bytes in ES6

also 32 bytes in Python 2, strangely

New Main Posts

4:45 PM

1

Q: Narcissistic array elements

Definition Narcissistic 1 integers of an array think they are better than their neighbours, because they are (strictly) higher than their arithmetic mean. Neighbours are defined as follows: If the integer is at index 0 (the first), then its neighbours are the last and the second elements of ...

code-golf number array-manipulation

Leaky Nun

4:56 PM

I see we got a few new quicks

ƙ	Key. Map a link over the groups formed by identical items.	<monad>ƙ
ƭ	Tie. Cycle through a number of links each time called.

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