On Wed, Mar 4, 2009 at 4:07 PM, Roger Hui <[email protected]> wrote: > It is by definition that 0=x*.y if x=0 or y=0. > Then the advantages are that *. is the same > as "and" for booleans and that the identity > (x*.y)=x(*%+.)y holds for x=0 or y=0 .
Is it worth noting that min and max (<. and >.) could likewise serve as and and or, without needing any special case treatment? -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
