Puzzle: Find the Noun below that returns a as shown.
(0;0) {:: ,<'ab'
a
Noun {:: <'ab'
a
A direct rephrasing---I'd like to see the simple demonstration that
{:: a: must be a boxed raveled ace.
My concept of fetch operation: index to next box, open, repeat.
Possibly my scheme doesn't permit a scalar box? Raul showed that
$>{::a: is 1, in other words, the innermost box has rank 1. On the
other hand, 0{7 is 7 , not an error whereas in APL (irrelevant) with
index origin zero 7[0] is rank error by my recollection. I haven't
found Noun to fetch the 'a' from the scalar box holding 'ab'.
> But the key thing is: the paths returned by {::
> only navigate boxes, they do not concern
> themselves with the content of those boxes.
>
> ({:: 1 2 3;4 5 6) -: {:: 1;''
> 1
>
....
>
> If I have mis-understood your question, please let me know.
>
> --
> Raul
>
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