Re: [Bug-apl] An other question about "⍶"

[Ala'a Mohammad]

Thanks for bringing this up and for the solution.

It is even more readable:

at ← { ⍵+(⍴⍵)↑(-χ)↑⍺ }

88 at[3 2] s44

Best,

Ala'a

On Thu, May 19, 2016 at 6:04 PM, Juergen Sauermann
<address@hidden> wrote:
> Hi Christian,
>
> correct. In GNU APL you cannot use values in defined operators where
> functions are expected,
> except for very few primitive operators.
>
> A work-around for a third value in lambdas is to use the axis χ instead of
> function ⍶:
>
>       FOO ← { ⍺ χ ⍵ }
>       1 FOO[2] 3
> 1 2 3
>
> /// Jürgen
>
>
> On 05/18/2016 09:59 PM, Christian Robert wrote:
>
> Looking at
>
>  https://www.youtube.com/watch?v=DmT80OseAGs
>
>
> Every thing goes fine (when he says "take" and use "⊃" you write "↑" instead
> in gnuapl)
>
> [...]
>
>       88 {⍺ ⍵} s44
> 88 ┌→──────┐
>    ↓0 0 0 0│
>    │0 0 2 1│
>    │3 0 0 4│
>    │0 0 0 0│
>    └───────┘
>
>
> at the minute 03:41 it fail with a syntax error
>
>       88 (3 2 {⍺ ⍶ ⍵}) s44
> SYNTAX ERROR
>       88(3 2 λ1)s44
>       ^         ^
>
> Does this means that in gnuapl "⍶" cannot be data ? (ie: *must* be a
> function)
>
>
> Xtian.
>
>