I am afraid not. y=: 1e3 [EMAIL PROTECTED] 900 6!:2 '(~.y) i. y' 5.50349e_5 6!:2 ',I.|:=y' 0.00924894
y=: 1e4 [EMAIL PROTECTED] 900 6!:2 '(~.y) i. y' 0.000147784 6!:2 ',I.|:=y' 0.186556 In general the monad = is inherently inefficient in space and time. ----- Original Message ----- From: Brian Schott <[EMAIL PROTECTED]> Date: Thursday, May 24, 2007 8:31 pm Subject: Re: [Jprogramming] index in nub > ,I.|:=y > > On Thu, 24 May 2007, Roger Hui wrote: > > + (~.y)i.y finds the indices of y in the nub of y . > + Can you do it faster? ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
