Re: Is relational theory irrelevant?

From: Paul Vernon <paul.vernon_at_ukk.ibmm.comm>
Date: Wed, 26 Nov 2003 11:11:13 -0000
Message-ID: <bq21ut$1l8m$1@gazette.almaden.ibm.com>

"Bob Badour" <bbadour_at_golden.net> wrote in message news:AOWdncwv5ZOSeiaiRVn-hA_at_golden.net...
> D nests relational expressions within variable operations

> and nests variable operations within variable operations.

You mean D's multiple assignment statement? That is the only variable op that contains other variable ops that I can think of.

> It does not, and should not, nest
> variable operations within value operations.

Not that "nesting variable ops within variable ops" is a good idea either.

> Value operations with
> side-effects is a really, really, really bad idea.

It's only the nesting that makes them a really bad idea. Returning single values from single (un-nestable) variable operations is a very good idea.

Regards
Paul Vernon
Business Intelligence, IBM Global Services Received on Wed Nov 26 2003 - 05:11:13 CST