Re: [Bug-apl] Correct use of ⍤

[Kacper Gutowski]

On 2014-05-04 22:21:48, Elias Mårtenson wrote:
> I was reading the following thread on comp.lang.apl: 
> https://groups.google.com/
> d/msg/comp.lang.apl/ZmdHbyqSM4M/522hE9rDRTkJ
> 
> In it, it is suggested that the following statement will work:
> 
>       (3 3⍴⍳9)×⍤1 ⍳3
> 
> However, GNU APL gives RANK ERROR here. Is that correct?

It was discussed here earlier.  GNU APL doesn't have syntax for
non-functional right operand, instead ⍤ is monadic (f⍤) and right
argument of derived function is treated in peculiar way that in
some cases will make it look as elsewhere but it others will give
confusing rank error.

In GNU APL you have to write:

  (3 3⍴⍳9)×⍤1 (⍳3)


-k