First, I think this is the expression you are looking for:
c ($@] $ [ b} ,@]) a
Or, if you prefer:
($a) $ c b} ,a
My guess as to the reason for this is the examples on the two pages
that define item amend.
http://www.jsoftware.com/help/dictionary/d530n.htm
http://www.jsoftware.com/help/dictionary/d530v.htm
And my guess for the cause of the difference is editing drift --
probably one was updated to a new concept where the other was not.
I hope this helps,
--
Raul
On Fri, May 18, 2012 at 7:30 PM, Robert Cyr <robert....@gmail.com> wrote:
> Inserting a 2 column array in a specified column of a rank 3 array.
>
> *Given*:
>
> a=.i.2 3 5
> b=.i.2 3
> ]c=.2{"1 a
> 2 7 12
> 17 22 27
>
> *This one is fine:*
>
> b(2&{"1@])}a
> 0 1 0 3 4
> 5 6 1 8 9
> 10 11 2 13 14
>
> 15 16 3 18 19
> 20 21 4 23 24
> 25 26 5 28 29
>
> *But not this quite similar one*:
> b c }a
> |index error
> | b c}a
>
> *Why?*
>
>
> Sent from my iPad
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