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[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Understanding Identity Transformations
 Wow.. that is easy except that I do not understand your notice explanation... the difference between your not( ... ) and your !=. "@cat != 'BLUE'": will be true if the context node has a 'cat' attribute *and* if it has a 'cat' attribute not equal to 'BLUE'. So it's the same as "boolean(@cat) and not(@cat='BLUE')" "not(@cat='BLUE')": will be true if the context node has no 'cat' attribute *or* if it has a 'cat' attribute not equal to 'BLUE'. So it's equal to "not(@cat) or not(@cat='BLUE')" Wow... so much boolean logic that it doesn't seem logical anymore... So what is the difference then? I don't get it. The difference is that '!=' will work and 'not(...=...)' will not. Now don't ask me why:) The reason can probably found at http://www.w3.org/TR/xpath.html#booleans , but I know it rather from experience than from any documentation. regards, -- Joris Gillis (http://www.ticalc.org/cgi-bin/acct-view.cgi?userid=38041) Gaudiam omnibus traderat W3C, nec vana fides 
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