On Fri, Oct 1, 2010 at 3:30 PM, Justin Paston-Cooper
<[email protected]> wrote:
> Although I have one question. Is v/\ optimised at all? It will not be
> so useful to me if v/ goes from the start for every prefix.

It seems reasonably fast, to me:

   m=:?1e6#2
   (6!:2,7!:2)'</\m'
0.00149544 1.04966e6

-- 
Raul
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