The APL Orchard

« first day (425 days earlier) ← previous day next day → last day (2232 days later) »

H.PWiz

1:43 AM

@ngn thanks

9 hours later…

Feeds

10:49 AM

Join our live webinar - APL Processes and Isolates in the Clouds - on Thursday 19 April 2018 at 15:00 UTC where Morten will demonstrate how to launch APL processes on Amazon WebServices under program control https://dyalog.tv/Webinar Next webinar is Thursday 17 May at 15:00 UTC.

Tweeted by dyalogapl on March 26, 2018 at 10:30 AM

Feeds

11:42 AM

Join our live webinar - Isolates & other APL Processes in the Cloud - on Thursday 19 April 2018 at 15:00 UTC where Morten will demonstrate how to launch APL processes on Amazon WebServices under program control https://dyalog.tv/Webinar Next webinar Thursday 17 May at 15:00 UTC

Tweeted by dyalogapl on March 26, 2018 at 10:55 AM

2 hours later…

J. Sallé

1:20 PM

@ngn I edited my answer there but forgot to thank you here, man. Thanks a lot :)

Does anyone know what is called if I have a function like ⍺{something:{target:⍺∇(1+⍵)⋄⍺}⋄something_else}⍵? Is the whole function called recursively, or just the inner function?

Adám

@J.Sallé The inner. ∇ always refers to the innermost function.

J. Sallé

@Adám Is it possible to call the outer function from the inner in this case?

Adám

@J.Sallé You could let the inner be an operator and feed it the outer as operand (∇{…}), or you could name the outer (even inside itself with f←∇) and call it by name.

J. Sallé

@Adám ah, okay, sounds good.

@Adám another, totally unrelated question: on a tacit function, how can I get a vector argument something<argument? Not sure if that's clear enough

Basically I have an argument x, and I need a vector x y<x

Adám

1:37 PM

@J.Sallé 0,> ?

J. Sallé

I tried doing ⊢ (1<⊢) and some variations of that but it obviously just returns 0 or 1 depending on the result of <

@Adám that raises an exception telling me I need another argument

Adám

@J.Sallé Parens? as in 3(0,>)2

J. Sallé

@Adám I don't think I phrased the question properly, actually. I need the resulting vector to be x y<x as in: Argument 10; I need the vector 10, (y<10) (which would be either 10 0 or 10 1)

Adám

@J.Sallé What you're actually asking for is (,⍨<⊢) but x<x is always 0, so I just wrote (0,⊢<⊣) but ⊢<⊣ is just < so I wrote (0,>).

J. Sallé

@Adám that's also not it, since it gives me either 1 1 or 0 0. I managed to make it a Dfn though (which is quite trivial), I'll try to translate from there

Adám

1:52 PM

@J.Sallé How does your dfn look? (I can let you have the exercise of translation, but I'd like to understand what you meant.)

J. Sallé

@Adám well the relevant part is {⍵(1<⍵)×something}10

Adám

@J.Sallé Oh. Maybe use ,? {⍵,(1<⍵)×something}10

J. Sallé

@Adám Yeah, I'm trying some forks using ,

Adám

@J.Sallé Unfortunately we don't have a "space" primitive, such that A f B f C is the same as A B C.

J. Sallé