The Nineteenth Byte

HyperNeutrino

3:02 PM

Next OEIS posted, next sequence is pretty easy.

user202729

Impressively fast. +1 from me.

HyperNeutrino

thanks :)

it took me a minute or two to understand what it meant

but then it's just (partitions + deltas + products) -> sum

user202729

What was the reason you used long...?

HyperNeutrino

because I had no idea if it would go out of int range :P

Adám

@user202729 And I can't type ⌸ with AltGr+Shift+K. (AltGr+k giving ' being out of commision is less detrimental because I also have a dedicated ' button.)

HyperNeutrino

3:06 PM

so I just used long cuz why not :D

what is AltGr

user202729

The right Alt button.

HyperNeutrino

oh ok

neither of my alt buttons indent code

user202729

How do you enter Jelly/Enlist/etc. special characters?

HyperNeutrino

D: chromebooks are weird maybe?

@user202729 copy-paste :D :D

user202729

No, only some keyboard have right Alt = AltGr = Ctrl+Alt, some others have right Alt = Alt. That's customizable though.

HyperNeutrino

3:08 PM

oh ok

user202729

Because I have to look up atoms meaning too, having dedicated keyboard is somewhat useless, but I don't like using mouse so it is still quite useful.

And I turn on MouseKeys on Windows.

HyperNeutrino

I'm considering making a Jelly docs thingy that allows you to look up the meanings more easily and copy-paste without using a mouse :D

maybe also make a thingy that lets you provide a functionality example and it looks up an atom from that though that would probably be slow for lookup

Adám

@HyperNeutrino Maybe like Dyalog RIDE? ``name_of_desired_atom

HyperNeutrino

hm?

Adám

@HyperNeutrino In Dyalog APL's RIDE interface, you can insert a symbol by name of its functionality if you hit backtick twice before that.

HyperNeutrino

3:11 PM

oh cool :D

I thought that double backtick was a markdown fail ;P

user202729

Does Enlist have PrimeQ function? I can see just prime range, prime pi, "not pi" function.

HyperNeutrino

I don't think so lol

user202729

Multiline doesn't have markdown.

HyperNeutrino

The great thing is that I have a PrimeQ function implemented and I use it three times but not as a PrimeQ builtin :P

Erik the Outgolfer

@user202729 huh

Adám

3:12 PM

@user202729 ?

HyperNeutrino

Literally just "<some symbol>": (1, vecmonad(PrimeQ)),

Adám

HyperNeutrino

cannot see images

user202729

I thought it was multiline.

Adám

@HyperNeutrino It says:

``ra│
? `q ``random
,    ``ravel
⍤ `J ``rank
⍞ `{ ``rawinput

user202729

3:19 PM

HyperNeutrino

ah ok. ooh that's cool

@user202729 thanks :D

user202729

But how could you type backtick?

Erik the Outgolfer

with the backtick key I guess?

Adám

@HyperNeutrino Wait, could you see that image, but not mine?

user202729

Because of domain blocking.

Erik the Outgolfer

3:21 PM

@Adám imgur is blocked in his school

Adám

@user202729 Backtick is not used in APL, but backtick,space does it.

user202729

This is two consecutive backticks separated by a letter: a

@EriktheOutgolfer See, the above obviously doesn't work.

Adám

Oh, so which image hosting services one-box?

user202729

I was asked about backtick in chat.SE.

@Adám The ones that make links end with image extension.

Adám

@user202729 Apparently not:

Erik the Outgolfer

3:24 PM

yes this shows as an image

user202729

It does onebox the image.

Or am I misunderstanding what is onebox?

Adám

@EriktheOutgolfer Yes, but the image doesn't actually load.

Erik the Outgolfer

how

it does

it says "DYALOG"

user202729

@HyperNeutrino Why does the newest Enlist version prints a table of |Character|Function|...?

HyperNeutrino

@user202729 darn, I forgot to remove the helper code for writing docs

(leaving in debug code is apparently something I really like doing)

Adám

3:26 PM

@EriktheOutgolfer Really‽

Erik the Outgolfer

for me it doesn't say "Image not found"

user202729

The image shows for me too (it shows DYALOG).

HyperNeutrino

Erik the Outgolfer

try refreshing

HyperNeutrino

(I hope that's the right image because I have no idea what I just uploaded)

user202729

3:28 PM

Your school block downloading but enable uploading?

Erik the Outgolfer

@HyperNeutrino apart from the need to disable ghostery, yeah :p

user202729

Or is that uploading to SE, and SE forward to imgur?

Adám

@HyperNeutrino Yeah, it is right, but you gave us your entire screen. Potential privacy leak. Also, your chat looks odd.

HyperNeutrino

@user202729 apparently so? or maybe it's sent to SE which sends to imgur

lolninja

Erik the Outgolfer

it's sent to se

user202729

3:29 PM

@Adám Probably chromebook.

HyperNeutrino

@Adám meh there's nothing too private other than that you know my email address which is also on my website which you can find on my profile already anyway

@Adám my school blocks icon images so only ones that are on gravatar, are SE default icons, or are already loaded will render

Adám

@EriktheOutgolfer I did, and now I have a one-boxed link saying "user image".

HyperNeutrino

the only thing you can stalk is my slack workspace name and I don't care :P

unless you now know where I live because of screenshot o_O

Nathan Merrill

@HyperNeutrino Do you keep all of those mail tabs open all the time?

HyperNeutrino

@NathanMerrill not all the time but usually

Nathan Merrill

3:31 PM

you should pin them

give yourself some tab space :P

HyperNeutrino

nah then I can't see notifs

Nathan Merrill

yeah, you can. There's a blue dot that appears

HyperNeutrino

tab space is overrated D: having like 20 tabs open all crammed together is decently normal

@NathanMerrill oh really D:

Erik the Outgolfer

um why do you need 4 emails?

betseg

Monument Valley 2 is out for Android \o/

Adám

3:32 PM

@HyperNeutrino And you can enable a favicon overlay saying how many unread.

Nathan Merrill

if the title of a webpage changes on a pinned tab, chrome will put a blue dot

HyperNeutrino

old personal, personal, new personal, and school

@NathanMerrill ooh that's cool :D

@Adám oh yeah I remember that thingy

betseg

@HyperNeutrino 3 personal? Wow

Nathan Merrill

When I got my first email, I went out and got the same email on 5 or 6 other email providers

I even at it at cia.com

which apparently is now a high-value domain :P

HyperNeutrino

one was really old but it had my personal name in it so I switched to using tetrahedron77 which doesn't, but then I realized that since now it's more important that people know who I am than for me to be some unidentified internet entity, so I put my real name into that email, and then I realized that "tetrahedron" is a weird name so I just made my short-form name into the email :D

and the school gives me a gmail account because why not

user202729

3:35 PM

[Enlist] I really need PrimeQ check for the next OEIS. Any quick (in terms of bytes) check?

My current code: 1,-ṁṬ×•³R!↔§S

Adám

@HyperNeutrino "gives … a gmail account" ‽

HyperNeutrino

@Adám well every student in my school board has a gmail account

betseg

I have 4 email accounts on my PC too. Mine, another one of mine which I use for unimportant sites, mom's and dad's

HyperNeutrino

under the school board gmail organization

user202729

@Adám Why is your ? ‽?

Erik the Outgolfer

3:36 PM

it's not just ?

HyperNeutrino

@user202729 ‽ == !? except it looks weird

Erik the Outgolfer

it's both ? and !

Adám

@user202729 Because !!

Erik the Outgolfer

it's compose key+!+?

Adám

@EriktheOutgolfer No, it is AltGr+(Shift+U,q)

betseg

3:38 PM

Oh it's an interrobang? My phone's monospace font doesn't have it so all i see is a rectangle

Erik the Outgolfer

@Adám on what layout

HyperNeutrino

@betseg wait do you set your system to use monospace fonts everywhere possible

Adám

@EriktheOutgolfer Mine.

betseg

> Why is your ? ‽?

i couldn't see that one

Adám

@betseg Can you see this one: ‽

HyperNeutrino

3:39 PM

oh

betseg

@Adám yes

HyperNeutrino

right facepalm

Erik the Outgolfer

@Adám wow

that's massive

Adám

@EriktheOutgolfer What, the keyboard layout or the code?

Erik the Outgolfer

the code

Adám

3:40 PM

@EriktheOutgolfer The .klc or .dyalog?

Erik the Outgolfer

um the kbd dfn

HyperNeutrino

writing char-by-char lexer is painful I'm switching back to regex D: D: D:

Adám

@EriktheOutgolfer That's auto-generated by MSKLC's GUI :-)

betseg

@EriktheOutgolfer almost as big as the timezone changes database :P github.com/tzinfo/tzinfo-data/blob/master/data/europe

(link is only eu)

Erik the Outgolfer

@Adám why is msklc using apl >_>

Adám

3:44 PM

@betseg Nuts! IMHO, everybody should just switch to UTC year-round.

@EriktheOutgolfer Uh, what?

Erik the Outgolfer

@Adám the issue is that day and night isn't the same time in all places

betseg

why cant you wake at at 8 pm and sleep at noon

Adám

@EriktheOutgolfer Neither is day and night the same on all dates – even in the same place.

@EriktheOutgolfer What betseg said.

J. Sallé

Also imagine places like Canada, 'murica and Brazil which have 3 or 4 different time zones

HyperNeutrino

and then there's china which has only one timezone :D

Adám

3:47 PM

@J.Sallé Yeah, it is a mess. Much easier if each store decides their opening hours in UTC. And long distance public transit schedules would be so much simpler.

Erik the Outgolfer

@Adám well then we'd still need to deal with issues such as "8:00 is early for you but late for me"...

J. Sallé

@Adám agreed

betseg

@HyperNeutrino and nepal with +5:45

HyperNeutrino

how wide is nepal though

china spans like 4-5 timezone spots

betseg

but i mean

5:45

J. Sallé

3:48 PM

@HyperNeutrino about 45 minutes wide, I guess? >.>

HyperNeutrino

oh nepal is the weird one with quarter time?

betseg

i think there was one more quarter time zone

Adám

@EriktheOutgolfer You already have to deal with timezones to decide when to call. People could stick a (19:00-03:00) on their business cards.

HyperNeutrino

newfie time is half which is already weird enough

I think some place near the east coast of asia also has quarter time, or maybe some weird island in australia area

Erik the Outgolfer

@Adám oh that's easy they just append "UTC"

and you should know the timezone of where you live ;-p

Adám

3:50 PM

@EriktheOutgolfer Yes. My proposal doesn't even require any law changes. If everybody just started indicating all times in UTC…

J. Sallé

@betseg

North Korea, Newfoundland, India, Iran, Afghanistan, Burma, Sri Lanka, the Marquesas, as well as parts of Australia use half-hour deviations from standard time, and some nations, such as Nepal, and some provinces, such as the Chatham Islands of New Zealand, use quarter-hour deviations.

(From wikipedia)

betseg

wow

HyperNeutrino

yay so it was some weird island in australia area

betseg

i only knew iran india and au

HyperNeutrino

anyway gtg o/

betseg

3:52 PM

bye

J. Sallé

Cya Hyper o/

@betseg also this link is interesting.

betseg

> ...time-zones-interesting.html

yup, definitely interesting

Adám

Denmark's time zones constitute a huge mess too:
Area	              Std  	Dayl
Denmark	           UTC+1	UTC+2	EU transition dates
Faroe Islands	     UTC±0	UTC+1	EU transition dates	Atlantic/Faroe
Danmarkshavn	      UTC±0	(no DST)
Ittoqqortoormiit	  UTC-1	UTC±0	EU transition dates
Western Greenland 	UTC-3	UTC-2	EU transition dates
Thule Air Base	    UTC-4	UTC-3	U.S. transition dates

J. Sallé

Pun intended :p

@Adám I think those are technically not all Denmark's though.

Adám

@J.Sallé Why not?

J. Sallé

3:57 PM

@Adám nevermind those are all Danish territories

although Greenland and the Faroes are technically independent

Adám

@J.Sallé They each have two members of the Danish parliament.

J. Sallé

@Adám yeah yeah, I just checked. They're not independent, they're autonomous.

betseg

Ittoqqortoormiit

nice name

Adám

Even if you just look at Greenland (the last four lines) it is still a mess. Four time zones; three daylight savings transition rules!

Polysynthetic language

In linguistic typology, polysynthetic languages are highly synthetic languages, i.e. languages in which words are composed of many morphemes (word parts that have independent meaning but may or may not be able to stand alone). Polysynthetic languages typically have long "sentence-words" such as the Yupik word tuntussuqatarniksaitengqiggtuq which means "He had not yet said again that he was going to hunt reindeer." The word consists of the morphemes tuntu-ssur-qatar-ni-ksaite-ngqiggte-uq with the meanings, reindeer-hunt-future-say-negation-again-third.person.singular.indicative; and except for the...

betseg

i know how inuit languages work, i found 4 double letters interesting

Adám

4:08 PM

CMC: Given a word, return the number of double-letters. (You may assume no triple-letters.) E.g. Ittoqqortoormiit → 4

J. Sallé

@Adám yup, seems like Brazil. Here in Rio we have DST, but in Bahia (which is the same time zone) there's no DST.

betseg

@Adám Ii => 1?

Adám

@betseg You may ignore or consider case as you want.

Erik the Outgolfer

@Adám qqq -> 2?

Adám

@EriktheOutgolfer (You may assume no triple-letters.)

Erik the Outgolfer

4:09 PM

oh so no qqq or qqqq etc.

then jelly, 4 bytes: ⁼2\S

Adám

@EriktheOutgolfer Correct. Also, I doublt many languages have words with quadruple-letters.

user202729

@EriktheOutgolfer +1. My solution is 6 bytes.

betseg

@Adám welsh

well technically ll is one letter

ff too

user202729

Oh no, the next OEIS A000087 has (nontrivial, easy to implement) formulas.

AdmBorkBork

@Adám PowerShell, 36 bytes

bookkeeper is the highest count I can come up with for English

Adám

4:14 PM

@betseg The studying of eggs laid in animal parks: zoooology

betseg

zoo-oology

nice

Adám

@AdmBorkBork Subbookkeeper

AdmBorkBork

Heh

betseg

maatteessüf in turkish, it's a borrowed word tho

J. Sallé

@betseg ü in Turkish has the same pronunciation as it's German counterpart?

I assume not, but idk

betseg

4:18 PM

i think it does

yup, checked wikipedia, it does

J. Sallé

Nice, good to know hahahah

betseg

4:35 PM

@Adám Emojicode, 136 bytes. Try it online!

New Meta Posts

5:01 PM

0

Q: exern link allowed in answer

Dubious link [Try run] in the "retina" solution in Question set intersection of two lists Point to one link is not Tio, but open Tio. What this means? What are the link allowed in Codegolf? And the ones prohibited? The link in question if I can report is http://retina.tryitonline.net/#code=K2Ao...

discussion

Neil

@Adám in one of Martin Gardner's columns someone suggested boobbookkeeper and then someone else added the obvious subboobbookkeeper

mınxomaτ

5:31 PM

Is this real life: newsroom.intel.com/editorials/…

Mr. Xcoder

@Adám For reference, Jelly, 6 bytes ŒgL€’S. It can be 4 as Erik pointed out well.

Jelly, 5 bytes ŒrFċ2

Mr. Xcoder

5:53 PM

@J.Sallé Posted, and thanks for the feedback!

New Main Posts

0

Q: Do we share the prime cluster?

The prime cluster of an integer N higher than 2 is defined as the pair formed by the highest prime strictly lower than N and the lowest prime strictly higher than N. Note that following the definition above, if the integer is a prime itself, then its prime cluster is the pair of the primes prece...

code-golf number-theory decision-problem primes

DJMcMayhem

6:14 PM

@Adám V, 3 bytes (yay, it beats Jelly! XD): Ø±

No TIO link cause my internet is being dumb right now

Just kidding, it finally loaded: Try it online!

@Adám Brain-flak, 54 bytes: (([])<{({}<({}[({})]){{}<>({}[()])(<>)}{}>[()])}<>>{})

Just kidding, 30 bytes: {<({}[({})])>{(<{}>)()}{}[()]}

That version is waaaaay prettier

caird coinheringaahing

@DJMcMayhem What's the unprintable character?

DJMcMayhem

@cairdcoinheringaahing 0x88. It's a regex shortcut for $.$ in vim, or (.) in typical regex

And ± is a shortcut for \1, and Ø is the count function

So in pseudocode, it's basically replace(currentline, count(/(.)\1/, currentline))

Actually, technically it's all lines, not current, but there's only one so it doesn't matter

orlp

@DJMcMayhem IMO ± should split time itself, and continue running the program in parallel universes, one with + and another with -, and return the right answer by destroying one of the universes

have you tried that?

Mr. Xcoder

@cairdcoinheringaahing @EriktheOutgolfer was right, ETH's answer does fail if the inputs are equal and (both) are prime.

DJMcMayhem

@orlp I tried that originally, but we're in the universe where that didn't work

J. Sallé

6:29 PM

@orlp that's basically two threads in a processor?

DJMcMayhem

@orlp Also, inb4 mathematica builtin

caird coinheringaahing

@Mr.Xcoder Shame :( It was a good idea

orlp

@J.Sallé no, no, we must split time itself

J. Sallé

@orlp slightly harder, then. I'll let you know when I finally discover time warping.

Mr. Xcoder

@cairdcoinheringaahing I feel bad about ETH but I am also glad on the other hand that my challnge is not just primerange, negate.

Anyone up for JHT?

caird coinheringaahing

6:39 PM

@Mr.Xcoder Yeah, I should be ok for 30mins

Jonah

So I've solved take one to make one, but am unhappy with my solution, so haven't posted it yet. would appreciate any improvement ideas from J experts, if any are around.

my solution: Try it online!

The tacit version was even more verbose. In any case, I can just feel that there's got to be a solution at least 30% shorter than that...

Adám

7:10 PM

@Jonah I don't know J, but I just invited a J expert to dinner.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Ternary Parity of Substrings Definition The ternary parity of a string is the number of 1's in its ascii bitstring mod 3. For instance, the ascii values for "Hello World!" are: H:72 e:101 l:108 l:108 o:111 space:32 W:87 o:111 r:114 l:108 d:100 !:33 Converting each ascii value to binary gives...

Jonah

@Adám Roger Hui?

Adám

@Jonah No, Marshall Lochbaum.

New Main Posts

8:06 PM

2

Q: "pick - flatten"

Consider the process of "picking" a nested list. Picking is defined as follows: If the argument is a list, take an element from the list at random (uniformly), and pick from that. If the argument is not a list, simply return it. An example implementation in Python: import random def pick(obj...

code-golf number combinatorics probability-theory

Adám

8:26 PM

0

A: Take one to make one

J, 30 bytes All credit goes to my colleague Marshall. Unnamed tacit prefix function. [:+./ .*(1->./@${.|:)^:2@|:@#: Try it online! (@ is function composition) #: antibase-2 |: transpose (…)^:2 apply the following function twice: 1- Boolean negate >./ the maximum @ of the $ axis l...

tfbninja

8:50 PM

@DJMcMayhem How would you do this Challenge in brain-flak? Is it possible? codegolf.stackexchange.com/questions/103822/output-the-sign

New Main Posts

1

Q: Convert between Music clefs

Convert between Music Clefs Before you leave, you do not have to understand much musical notation to do this challenge. EXPLANATION In standard sheet music, double clefs go across the page serving as reference points to the notes, letting you know what note should be played. If you are not a...

code-golf music clefs

DJMcMayhem

@tfbninja There's already 2 answers

9

A: Output the sign

Brain-Flak 74 42 40 Bytes Saved 2 bytes thanks to 1000000000 {([({}<([()])>)]<>(())){({}())<>}}{}({}) Try it Online! Explanation: { } # if 0 do nothing ( ) # push: {}< > ...

Jonah

@Adám tyvm! tell marshall ty as well. i knew there was a better solution.

Adám

@Jonah Marshall is reading along. :-)

Jonah

9:09 PM

Marshall, that is some beautiful J. What fact are you using with that permanent? Is there some linear algebra fact that is equivalent to "you can pick a one from each row"?

Adám

@Jonah Marshall (needs a SE account but) says: There is no linear algebra reasoning behind this, you could use < . (;<) to analyse what . does.

@Jonah … It kind of is that determinant encapsulates the concept of choosing a different element from each row.

Jonah

@Adám Okay that's helpful. I will look at it again tonight and ask in the comments if I can't figure it out myself.