Subject: Re: Testing for CDATA From: Mike Brown <mike@xxxxxxxx> Date: Thu, 10 Aug 2000 09:37:57 -0600 (MDT) |
Jeni Tennison wrote: > remember that if you're testing the value of a variable that has been set > using its content, you are testing a *result tree fragment*, not a > *string* Quite, um, 'true'. :) I usually assume people are familiar with the data types, but I'm probably being naive when I do so. test="$foo" is like test="boolean($foo)". Following the rules for XPath boolean(), and the XSLT spec's info on result tree fragments, the test will be true if $foo... is a boolean true [this isn't actually stated anywhere, is it?] is a string with a non-zero length is a non-zero, non-NaN number is a node-set with at least one node is a result tree fragment Result tree fragments are true because they always contain a 'root' node. - Mike ____________________________________________________________________ Mike J. Brown, software engineer at My XML/XSL resources: webb.net in Denver, Colorado, USA http://www.skew.org/xml/ XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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