Dyalog as well. However, both my implementation (KAP) and ngn/APL gives
what I consider the expected result.
Regards,
Elias
On Wed, 26 Jan 2022 at 12:37, Christian Robert <christian.rob...@polymtl.ca>
wrote:
> On NARS2000.64 it gives:
>
> ⎕fmt (A≠0) +.Q B
> ┌2───────┐
> 3┌0─┐┌0─┐│
> ││ 0││ 0││
> │└~─┘└~─┘│
> │ │
> │┌0─┐┌0─┐│
> ││ 0││ 0││
> │└~─┘└~─┘│
> │ │
> │┌0─┐┌0─┐│
> ││ 0││ 0││
> │└~─┘└~─┘2
> └∊───────┘
>
> so, the same thing as gnu-apl
>
> Xtian.
>
> On 2022-01-25 23:25, Elias Mårtenson wrote:
> > Consider the following code:
> > *
> > *
> > * A←3 4⍴1 3 2 0 2 1 0 1 4 0 0 2
> > B←4 2⍴4 1 0 3 0 2 2 0
> > Q←{⍺/⍵}
> > (A≠0) +.Q B*
> >
> > My reading (and implementation) of the ISO spec suggests the output
> should be the following:
> >
> > ┏━━━┓
> > ┃4 6┃
> > ┃6 4┃
> > ┃6 1┃
> > ┗━━━┛
> >
> > However, in GNU APL I get this:
> >
> > ┏→━━━━━━┓
> > ↓┏⊖┓ ┏⊖┓┃
> > ┃┃0┃ ┃0┃┃
> > ┃┗━┛ ┗━┛┃
> > ┃┏⊖┓ ┏⊖┓┃
> > ┃┃0┃ ┃0┃┃
> > ┃┗━┛ ┗━┛┃
> > ┃┏⊖┓ ┏⊖┓┃
> > ┃┃0┃ ┃0┃┃
> > ┃┗━┛ ┗━┛┃
> > ┗∊━━━━━━┛
> >
> > Which one is correct?
> >
> > Regards,
> > Elias
>
>
