On Mon, May 11, 2009 at 8:08 AM, Brian Schott <[email protected]> wrote:
> Yes, I get your result and another anomaly when x is shortened on Mac OS X.
>
> x =: 1 2 3 4
> x ({~)^:n y NB. Seems to behave as if (n -: a:)
> |index error
> | x ({~)^:n y
But that is how it is supposed to work:
4 { x
|index error
4 { 1 2 3 4 _1
_1
1 2 3 4 _1 ({~)^:a: y
0 1 2 3 4 _1
The problem is that, with n=:<3
1 2 3 4 _1 ({~)^:n y
should give the result:
0 1 2 4 _1
I believe n=:<,3 should give the same result,
but it does not. (The dictionary says that n
must be an atom but does not say that the
contents of the box must be an atom -- and,
clearly, in the case of a: it is not an atom.)
--
Raul
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