RE: [xsl] Compute sum of a computed node list

["Ragulf Pickaxe" <jawxml@xxxxxxxxxxx>]

Hi Andreas,

> the XPath predicate is particularly intriguing, as the specified condition
> 'number(.)=number(.)' will always be true (all nodes for which it is true
> that their content, when converted to a number, equals their own content
> converted to a number)

This is not strictly true,
Michael Kay's Programmer's reference, second edition, page 90 says:
The equals operator +=; returns false if either or both oprands are NaN...

Therefore this is a test to see whether the node will convert to a number.

Regards,
Ragulf Pickaxe :)

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