Re: Aggregation (with GBY) is Relational Division
From: vc <boston103_at_hotmail.com>
Date: 7 Jun 2006 09:05:29 -0700
Message-ID: <1149696329.115144.190440_at_u72g2000cwu.googlegroups.com>
Date: 7 Jun 2006 09:05:29 -0700
Message-ID: <1149696329.115144.190440_at_u72g2000cwu.googlegroups.com>
Frank Hamersley wrote:
> vc wrote:
> > Take any non-commutative operation to see the difference.
>
> Drat - I knew the operator itself would become the point of focus! What
> I wanted to know was the order in which the list elements would be
> addressed - then I can work out the trivial details surrounding the
> commutative or non-commutative operators that I might choose.
The list defined as a recursive data structure can be accessed /'destroyed' starting with its head, so naturally the traversal order will be the same in all the cases.
>
> Cheers, Frank.
Received on Wed Jun 07 2006 - 18:05:29 CEST