Patrick Durusau <> wrote on 01/23/2010 10:20:48 AM:
>
> I am trying to work out a normative statement from current 2.2
> Expression Calculation.
>
> I stumble over sentences like: "Any formula is an expression that
> produces a result."
>
> So, is an expression that doesn't produce a result not a formula?
I guess the question is: Is this intended to be a definition or a
constraint?
The definition of "formula" ought to be done in terms of match a
non-terminal identifier in the BNF grammar. In other words, it is defined
syntactically.
If it is meant to be a constraint then it is a constraint on the Evaluator
(formula processor) not the formula itself.
-Rob
>
> Or are the terms expression and formula meant to be interchangeable in
> all cases?
>
> My operating assumption is that they are equivalent.
>
> So, why not just pick one? I am indifferent to which one.
>
> I have several questions but will separate them for clarity's sake.
>
> Hope everyone is having a great weekend!
>
> Patrick
>
> --
> Patrick Durusau
>
> Chair, V1 - US TAG to JTC 1/SC 34
> Convener, JTC 1/SC 34/WG 3 (Topic Maps)
> Editor, OpenDocument Format TC (OASIS), Project Editor ISO/IEC 26300
> Co-Editor, ISO/IEC 13250-1, 13250-5 (Topic Maps)
>
>
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