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Re: How to test if existing tag/node contains a non-w

Subject: Re: How to test if existing tag/node contains a non-whitespace value?
From: David Carlisle <davidc@xxxxxxxxx>
Date: Wed, 9 Dec 2009 21:43:48 GMT
Re:  How to test if existing tag/node contains a  non-w
> test="string-length(normalize-space(<expression>)) > 0"

no, unless your system optimises that away it is a lot more efficient to


finding the string length of a mixed length byte encoding such as utf-16
or utf-8 is potentially expensive and you don't need the length just know
if it is non empty.

But this expression was in the original question, so the real question
is why the OP found it didn't work. perhaps there is more than 1 aaa
element child of the current node, in which case you'd need


or something...


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