Re: [Bug-apl] Monadic form of ↓

[Jay Foad]

On 9 October 2017 at 04:56, Elias Mårtenson <address@hidden> wrote:

Currently, monadic ↑ acts as if it was called dyadically with 1 as its left argument,

That's not quite true:

      ⍴⍴1↑'ABC'

1

      ⍴⍴↑'ABC'

0

while monadic ↓ raises a VALENCE ERROR. In almost every single case where I have used ↓, it has been in the form 1↓X. Is there a reason why the monadic form is not allowed?

FYI in Dyalog APL monadic ↓ is Split:

      ↓3 3⍴⎕A

┌───┬───┬───┐

│ABC│DEF│GHI│

└───┴───┴───┘

I believe this came from STSC's NARS.

Jay.