RE: Some comment about the production UnaryExpr

The rule as given in XPath 1.0 allows:
 
- - 1
 
(whose value is +1)
 
and 
- price | discount
 
which takes the union of the child price and discount elements, converts
the (first node of the) result to a number, and negates it.
 
Neither of these constructs is particularly useful, but they are perfectly
well-defined. The spec is correct.
 
Michael Kay 
 

-----Original Message-----
From: kykim@hit.co.kr [mailto:kykim@hit.co.kr] 
Sent: 27 January 2003 07:07
To: www-xpath-comments@w3.org
Subject: Some comment about the production UnaryExpr
Sensitivity: Personal



To whom it may concern,

 

Hello,

 

My name is Kwang-Young Kim(kykim@hit.co.kr <mailto:kykim@hit.co.kr> ). 

I am working for Hyundai Information Technology, Co., Ltd.

 

I have some comment about the XPath versoin 1.0 specification.

 

I think that the production rule for UnaryExpr in XPath should be 

the following :

 

   [27] UnaryExpr ::= UnionExpr 

                      | '-' PrimaryExpr

 

instead of :



   [27] UnaryExpr ::= UnionExpr

                      | '-' UnaryExpr

 

I am looking forward to hearing your response.

And I thank you a lot for spending your valuable time in reviewing 

my writing in advance.