[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Need an XPath expression for: $B is not contained
exists($B/ancestor-or-self::*[. is $A]) Michael Kay Saxonica > On 14 Jun 2018, at 13:22, Costello, Roger L. costello@xxxxxxxxx <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hi Folks, > > The variable $A contains an element. > > The variable $B contains an element. > > I need an XPath expression that determines if $B is not contained in $A. > > This XPath expression seems to work: > > not(index-of($B/ancestor::*,$A)) > > but that seems awful, i.e., not straightforward, convoluted, and probably inefficient. > > Is there a better (simpler, straightforward, efficient) XPath expression? > > /Roger
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