The fill f supplied via  u!.f  is required to be 
an atom.  

   #!.8 9
|rank error
|       #!.8 9
   {.!.8 9
|rank error
|       {.!.8 9



----- Original Message -----
From: Raul Miller <[EMAIL PROTECTED]>
Date: Thursday, June 14, 2007 3:53 pm
Subject: [Jbeta] apparently spurious rank error

>   1j1 #!.(8 9) i.3 2
> |rank error
> 
> I think this should be equivalent to
>   ,/(i.3 2),:"1]8 9
> 
> And I think
>   1j1 #!.(8 9) i.3 3
> should give a length error
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