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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: How to test if existing tag/node contains a non-w
 At 04:12 PM 12/9/2009, was heard: test="string-length(normalize-space(<expression>)) > 0" Since an empty string implicitly converts to a Boolean false, and any other string converts to a Boolean true, this is the same as saying test="normalize-space(<expression>)" (The only actual difference -- unless your processor happens to optimize it away -- is the extra computation required to measure the length of the string and compare the resulting number to another number.) The inverse of this is straightforward: test="not(normalize-space(<expression>))"> Note that in 2.0 all of these will return errors if <expression> returns more than one node. How best to defend against that possibility depends on the expression and use case. Cheers, Wendell ====================================================================== Wendell Piez mailto:wapiez@xxxxxxxxxxxxxxxx Mulberry Technologies, Inc. http://www.mulberrytech.com 17 West Jefferson Street Direct Phone: 301/315-9635 Suite 207 Phone: 301/315-9631 Rockville, MD 20850 Fax: 301/315-8285 ---------------------------------------------------------------------- Mulberry Technologies: A Consultancy Specializing in SGML and XML ====================================================================== 
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