Re: Mixing OO and DB
From: David Cressey <cressey73_at_verizon.net>
Date: Thu, 14 Feb 2008 15:17:19 GMT
Message-ID: <3YYsj.8976$%q3.2988_at_trndny07>
Date: Thu, 14 Feb 2008 15:17:19 GMT
Message-ID: <3YYsj.8976$%q3.2988_at_trndny07>
> I don't think that it is essential for a variable to be replaceable.
> Consider a type over a set with exactly one value. Can I have a variable
> of? In my view variable is just a mapping of the computational state onto
> the set of values of the type.
A constant can take on only one value. A variable is called a variable because it can be varied. In other words, the value written in it can be replaced. Received on Thu Feb 14 2008 - 16:17:19 CET