Re: No exceptions?

From: paul c <toledobythesea_at_oohay.ac>
Date: Sun, 02 Jul 2006 21:45:08 GMT
Message-ID: <E7Xpg.115632$Mn5.71825@pd7tw3no>

Bob Badour wrote:
...
> Any two values of differing most-specific-types are unequal. Thus, if x
> and y each have an attribute z where the types are different, the join
> will have cardinality zero and will have an attribute z with the most
> specific supertype of the z attributes in x and y. This might be the
> universal supertype.
> ...

Thanks very much for that. The word 'if' in 'if x and y each have an attribute ... ' might be at the centre of my question. Will ponder that, it might be the first time that anybody has tried to tell me in terms that I could dig why some OO notions might be important.

p Received on Sun Jul 02 2006 - 16:45:08 CDT