On 6/18/08, Tracy Harms <[EMAIL PROTECTED]> wrote:
> The approach I took to writing "guard" is one that works regardless of
> noun rank.  To summarize it in English:
>   Insert the argument into the center of a matrix sized two greater on each 
> axis.

You can write a tacit amend using the dyad
   left`middle`right}

For example:
   guard=: ]`([:<"1 [EMAIL PROTECTED] >:@#: [EMAIL PROTECTED]@])`(0 $~ 2 + 
[EMAIL PROTECTED])}~

However, I think that using overtake would be more efficient
for this case.

-- 
Raul
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