Re: [office-formula] Expression Calculation: expression = formula?

[robert_weir@us.ibm.com]

Patrick Durusau <patrick@durusau.net> 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
> patrick@durusau.net
> 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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