Re: [xsl] Need an XPath expression for: $B is not contained in $A

exists($B/ancestor-or-self::*[. is $A])

Michael Kay
Saxonica

> On 14 Jun 2018, at 13:22, Costello, Roger L. costello(_at_)mitre(_dot_)org 
> <xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> 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
--~----------------------------------------------------------------
XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
EasyUnsubscribe: http://lists.mulberrytech.com/unsub/xsl-list/1167547
or by email: xsl-list-unsub(_at_)lists(_dot_)mulberrytech(_dot_)com
--~--