Re: Is relational theory irrelevant?

"Paul Vernon" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> "Bob Badour" <[EMAIL PROTECTED]> wrote in message
> news:[EMAIL PROTECTED]
> > 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.

Think of the THE_ operators.


> >  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.

I disagree here. I think it is an excellent idea because it allows one to
express assignments closer to the level of intent.


> > 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.

I disagree. I prefer languages that make a very clear distinction between
value operations and variable operations.