At 2007-12-23 23:43 +0530, Mukul Gandhi wrote:
On Dec 23, 2007 11:01 PM, Michael Kay <mike(_at_)saxonica(_dot_)com> wrote:
> The fact that something can be coded in XSLT is not itself an argument not
> to include it in the standard function library. That argument can
be used to
> show that you don't need a "+" operator, because people can always write
> "--".
I recently needed to do set difference operation in a 2.0 stylesheet,
using Saxon 9 (basic version). I was a bit surprised to find that
Saxon reported, "Unknown system function except()".
"except" is an operator, not a function.
The F&O spec defines this function
(http://www.w3.org/TR/xquery-operators/#func-except). Could you please
tell, why this built in function not implemented in Saxon 9.
As a workaround, I had to resort to $seq1[not(. = $seq2)] ...
The above is comparing _values_ of each node, not the identity of each node.
Using "$seq1 except $seq2" engages the function defined in the specification.
Note how http://www.w3.org/TR/xquery-operators/#func-except is described as:
op:except($parameter1 as node()*, $parameter2 as node()*) as node()*
I hope this helps.
. . . . . . . . Ken
--
Comprehensive in-depth XSLT2/XSL-FO1.1 classes: Austin TX,Jan-2008
World-wide corporate, govt. & user group XML, XSL and UBL training
RSS feeds: publicly-available developer resources and training
G. Ken Holman mailto:gkholman(_at_)CraneSoftwrights(_dot_)com
Crane Softwrights Ltd. http://www.CraneSoftwrights.com/s/
Box 266, Kars, Ontario CANADA K0A-2E0 +1(613)489-0999 (F:-0995)
Male Cancer Awareness Nov'07 http://www.CraneSoftwrights.com/s/bc
Legal business disclaimers: http://www.CraneSoftwrights.com/legal
--~------------------------------------------------------------------
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
To unsubscribe, go to: http://lists.mulberrytech.com/xsl-list/
or e-mail: <mailto:xsl-list-unsubscribe(_at_)lists(_dot_)mulberrytech(_dot_)com>
--~--