The APL Orchard

12:25 PM

@Adám is there any buitin primitive function which pairs two items into a list? i.e. behaves like {⍺⍵}

even though I assume it would be unneeded in most cases

12:37 PM

@EriktheOutgolfer if you're using scalar ⍺ and ⍵ you can just use X{⍺,⍵}Y

@J.Sallé no, not just scalar

yours is same as X,Y

Yeah. You want to pair each element in 2 vectors? Like zipping?

no, just a 2-element list with the left and right arguments

@EriktheOutgolfer No, unfortunately. I've been lobbying for that, but it was turned down.

@Adám well, it could've been useful outside golfing too

for example pair a rank-2 with a rank-4

12:43 PM

@EriktheOutgolfer I think so too. However, I think that {(⊂⍺),⊆⍵} is more versatile.

@Adám still, that's not just pair

why's the second one a ⊆?

@EriktheOutgolfer Try it. It probably does what you want. {⍺⍵} is exactly the same as {(⊂⍺),⊂⍵}.

@Ven it's called "link" (it's not in Dyalog as a builtin btw)

Oh.

12:45 PM

⎕←{⍺⍵}/'abc' 'def' 'ghi'

Dyalog APL

@Adám
┌───────────────┐
│┌───┬─────────┐│
││abc│┌───┬───┐││
││   ││def│ghi│││
││   │└───┴───┘││
│└───┴─────────┘│
└───────────────┘

⎕←{(⊂⍺),⊆⍵}/'abc' 'def' 'ghi'

the reason the second one is a ⊆ is because you may want to make an array of more than 2 arrays

Dyalog APL

@Adám
┌─────────────┐
│┌───┬───┬───┐│
││abc│def│ghi││
│└───┴───┴───┘│
└─────────────┘

12:46 PM

@Ven See the difference?

I didn't know there was such a chatbot.

@Adám Yup, ty.

@Ven It is fairly new. You've not been around for a while. Welcome back.

@Ven it says it in the description :-p

> For chatbot info, enter: )about

but yeah, that's hard to see it's changed

@Adám Thanks! I've been drowning under work, not much time to do golfing at all.

I really need to reapply for a license, working with TIO makes the APL experience that much less pleasant.

@Ven Can't say the same here – golfing is work :-D

12:49 PM

@Ven TIO needs a virtual keyboard for apl, then it'll be great to use >.>

@J.Sallé Yes and no. Losing the interactivity is too much of a burden for me.

I end up keeping another TIO with snippets and I go back and forth with them... Subpar.

@Adám Were the results/explanations for the fall APL competition published?

@Ven yeah, I use the REPL for everything and just paste the finished code onto TIO

@J.Sallé Right. I used to use tryapl, but it's missing the newest builtins, which is too bad

@Ven Results and solutions and three submissions explained.

Indeed.

12:53 PM

@Adám Thank you :).

@Ven TryAPL for 16.0 has just been uploaded to GitHub. I have to try it before we launch it.

@Adám Amazing news! Thanks! :D

@Adám TryTryAPL? :p

@J.Sallé I've given Dennis the code for TryAPL's keyboard. He wants it for other languages too. Meanwhile, if you're on an Android device, you can have an APL keyboard on TIO by installing APL Keys from the Play Store.

@Adám unfortunately I'm one of those guys (apple fanboy)

but that's good news though

1 hour later…

2:06 PM

@Adám when submitting a full program, do I need to explicitly state ⎕IO←0?

hmm