@rak1507 relevant StackOverflow stackoverflow.com/questions/62622618/…

@Adám Could I find out also about my score and rank please ? I am a non-student, email username : hsuyueshan. First time attending this really nice competition. Thanks to Dyalog for organizing it ! It really helps in practicing APL. Will try to prepare for the next one !

@TessellatingHeckler aww ya beat me to it

it was a bit too late for me to be golfing at that time

@Adám oh nice

In Python, if i want a string of 7 spaces, I do " "*7.

how does it work in APL?

@Razetime You could do 7⍴' ' if it's a single character

if it's multiple characters, that's what I was fighting with "beep" earlier for that codegolf, and all I came up with was ∊7⍴⊂'beep'

enclosing, reshaping, then flattening. There might be a better way

strings are bit hard eh

thanks for the help

⋄ 7/'beep'

@TessellatingHeckler bbbbbbbeeeeeeeeeeeeeeppppppp

but how easily can you do that in Python? :P

ooh

⋄ (,∘'beep'⍣4) ''

@TessellatingHeckler beepbeepbeepbeep

catenate beep four times. Is that nicer, or is that too much syntax noise.

f←{⍵=0:1⋄⍺×(∇⍵-1)} why does 2 f 2 give me a value error?

` ⋄2{⍵=0:1⋄⍺×(∇⍵-1)}2

⋄2{⍵=0:1⋄⍺×(∇⍵-1)}2

@Razetime VALUE ERROR

or really, any arguments

⋄3{⍵=0:1⋄⍺×(∇⍵-1)}4

@Razetime VALUE ERROR

what part of recursion am i doing wrong

@TessellatingHeckler looks way nicer

another question

⋄'hello','world' returns this

@Razetime helloworld

but ('Hello' 'world')[1],'world' returns Hello world

⋄('Hello' 'world')[1],'world'

@Razetime Hello world

why?

@Razetime not to worry. there's no shortage of golfing challenges.

@Razetime you didn't supply a left arg in the recursive call: ⋄3{⍵=0:1⋄⍺×⍺∇⍵-1}4

@ngn 81

@Razetime their structure is different. in the first case it's a simple character vector. in the second case the first element is a nested vector. you can see that more clearly if you use ]box on in the repl or the display function from dfns: ⋄⎕cy'dfns'⋄display ('Hello' 'world')[1],'world'

@ngn
Illegal code
VALUE ERROR

trouble with the law.. :) anyway, this is the expected output:

┌→──────────────────┐
│ ┌→────┐           │
│ │Hello│ w o r l d │
│ └─────┘ - - - - - │
└∊──────────────────┘

@Razetime note that square-bracket indexing (correctly) returns an enclosed "Hello"

if you want the string "Hello" itself, you could use pick-indexing: (1⊃'Hello' 'world'),'world'

@ngn oh my god that was so dumb

@ngn Thank you so much

Hello again, am back with another problem

I have a solution to (this)

Braille question

which accets string input

tio.run/##fY7NSkJRAIT3PYWtzhWOQrSrRYQudKvtooUQygVBty5VvP7EuWWh/…

I need to make it work on tio

@Razetime you can't use the ⎕SRC⎕THIS thing with functions taking input with ⎕/⍞

oh ok

it seems to throw an error when I try to get the alphabet string as well

so how do I make it run?

@Razetime also TIO is still on Dyalog 17 so no ⎕C

hmm

so I just post as is?

without a URL

@Razetime this works, plus it's 1 byte shorter :p

how does that work? xD

@Razetime 819⌶ is what was there before ⎕C existed

also, (i←…),'…' → '…',⍨i←…

oh impressive

@Razetime also, ¯1∘⎕C could be ¯1⎕C, or just ⎕C

@dzaima i need to put that modification in?

@Razetime that's a byte golfed

@dzaima I took it from APlcart so I really didn't know whether I should remove them

@Razetime APLCart takes pride in making every function be a function, in many cases it has very unnecessary tacit stuff

Good. So I'll have to take and golf those into the programs

so this: tio.run/##fY49TgJRAIR7TvGoHiQPI/…

but with ⎕C would be 2 bytes shorter right

@dzaima

@Razetime yeah. you can post with that, but keep 819⌶ in TIO with a mention about it

Wonderful

thanks a lot for the help

@dzaima what does your about section mean

@Razetime it's SOGL code

wwow

it looks pretty confusing ngl

lemme execute it

@dzaima

doesn't print anything

@Razetime you sure you copied all 31 chars? any errors in the console?

maybe there was a stray space

Ima run it again

ah it links to canvas

@Razetime yep.

Ok time to run the same thing in Canvas

probably won't give output this time

Dumb question can I turn ⍳10 into something like (1)(2)(3)(4) etc

like ⍕¨⍳10 but keeping the values as numbers

@rak1507 what do you mean by (1)(2)(3)(4) (since it's equal to ⍳4)?

@rak1507 so convert each number to its digits?

Yeah, I was going to try and use @ to replace certain numbers with strings, and that didn't work, but I wondered if it'd work in another way

Not really sure

what exactly do you want to do?

something like ('text'@2) ⍳10

@rak1507 for that you probably meant (⊂'text')@2

Ah great that's it thanks

@rak1507 if the "yeah" is the answer to "convert each number to its digits", then 10⊥⍣¯1¨ ⍳10

The enclosing was what I needed, thank you

<kritixilithos> speaking of, what's a good way to enclose certain entries together? like given ⍳10, and i choose indices 4+⍳3, then i expect 1 2 3 4 (5 6 7) 8 9 10

<kritixilithos> i had half-expected @ to be able to do it, but i don't think it does

<kritixilithos> s/does/can

what about indices 1 2 4 5? should it be (1 2) 3 (4 5) 6 7 8 9 10 then?

(in that case, ⊂ with some unwrapping is probably the best bet. for a sequential enclosing, i'd probably go with some ↑↓s)

<kritixilithos> good question, i hadn't thought about that, but that could be a good compromise until someone gives a better one

<kritixilithos> this seemed to me to be something that could potentially be solved very concisely, but i guess not

(1,2≠/∊)⊂⊣

⋄(⍳10)((1,2≠/∊)⊂⊣)(4+⍳3)

@rak1507 1 2 3 4 5 6 7 8 9 10

⋄(⍳10)((1,2≠/∊)⊂⊣)(1 2 4 5)

@rak1507 1 2 3 4 5 6 7 8 9 10

@rak1507 not quite what the original question was, but probably more useful

Oh my bad, what was the original question?

@rak1507 1 2 3 4 (5 6 7) 8 9 10 ≢ (1 2 3 4) (5 6 7) (8 9 10)

Oh right

BQN documentation (Join for a random example) now has REPL links! Click one of the corner arrows and magic will happen.

That's really really cool!

@Marshall how long have you been working on this?

@Razetime BQN since June, the links since yesterday.

Do you accept contibutions?

I can help with website things

@Razetime Yes, definitely. The webpages are generated from markdown though (the one I linked to is the fancy version of this file) so you can't work with them directly.

oh, it's Jekyll right

mlochbaum.github.io ← this place should probably have a BQN link

@Razetime Nope, BQN.

BQN MArkdown?!?!?

@Razetime Yeah, that's somewhere on the todo list.

that parser is so extra I love it

I suggest adding a title sometime soon

like the title element

Yes, title and favicon.

what do you plan on using as a favicon/logo?

I don't have any better ideas than squishing the characters BQN together.

How about this symbol '⍉'

but made into an n

capital N

Kind of a |(\)| thing?

yep

exactly

##                    ##
####                  ##
##  ##                ##
##    ##    #####     ##
##   ##          ##   ##
##  ##  ########  ##  ##
## ##   #      #   ## ##
## ##   #######    ## ##
## ##   #      #   ## ##
##  ##  ########  ##  ##
##   ##          ##   ##
##     #####    ##    ##
##                ##  ##
##                  ####
##                    ##

Just need to draw it in slightly higher resolution...

I'll try making a vector

@Marshall How's this look?

@Razetime the 'B' would be a couple pixels at favicon size (i might or might not also be giving a go)

@Razetime Too wobbly. BQN should be super geometric.

I just used the APL font

Maybe something sharper would make more sense

what i have

<svg xmlns="http://www.w3.org/2000/svg" width="512" height="512" viewBox="-7.5 -7.5 15 15">
<g stroke-width="1" stroke="black" fill="none">
<path d="M-5.7 5.7V-5.7L-3 -3A4.243 4.243 0 0 0 1.624 3.92"/>
<path d="M5.7 -5.7V5.7L3 3A4.243 4.243 0 0 0 -1.624 -3.92"/>
<path d="M-2 -2H2V-0.6L1.2 0L2 0.6V2H-2ZM-2 0H1.2"/>
</g>
</svg>

bit late now, gtg

I'm reading a NSFW story from a NSFW website, and one of the plotlines involves deciphering languages - and the author makes a reference-by-description (it's not explicitly naming) to APL...

"More recently, a programming language that used overstriking — combining two or more characters in a single space – was invented for mathematical problems. The language was interesting, but never gained much popularity."

@JeffZeitlin "recently" :)

@ngn - Well, in the story, the main character (who is doing the language deciphering) had just mentioned Hangul; APL is certainly more recent than Hangul... :)

I think I'll go with that. It's pretty clean.

@Marshall my version updated, but i think i do prefer yours

@dzaima are you a (uni-level) student or a worker or something else?

(just ignore the question if this is smth you'd rather not answer)

looks like boinc logo

boinc.berkeley.edu

@RGS my SE profile page in conjunction with the competitions results and connecting of dots should be able to answer that

@dzaima that is what I thought, congratulations then ;)

imagine being a competition winner :(

@Razetime thinking about that more, what I want from multiplying 'beep' is like take ↑ ing too many things, but instead of padding with the prototype space, loop around and take from the beginning again. Realised that's what reshape does, sooo

⋄ 4 (⊢⍴⍨×∘≢) 'beep'

@TessellatingHeckler beepbeepbeepbeep