Re: [xsl] XQuery/XPath 3.1: Node List to Node Set ("distinct nodes")

On Wed, 2021-12-29 at 18:34 +0000, Michael Kay mike(_at_)saxonica(_dot_)com 
wrote:
> As Dimitre says, ($n except $a) where $n is a singleton isn't
> immediately intuitive - but intuition takes practice!
I'd be tempted to write,

 function($found-so-far, $new) {
    (
      $found-so-far,
      if (some $try in $found-so-far satisfies $try is $new)
      then ()
      else $new
    )
  }

mostly because a year from now i'll likely still understand it :)

Liam


-- 
Liam Quin, https://www.delightfulcomputing.com/
Available for XML/Document/Information Architecture/XSLT/
XSL/XQuery/Web/Text Processing/A11Y training, work & consulting.
Barefoot Web-slave, antique illustrations:  http://www.fromoldbooks.org
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