Nice xPath 3.1 approach, thanks.
On 25.03.2015, at 12:31, Michael Kay mike(_at_)saxonica(_dot_)com
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
I don't know of a better solution.
If the sequences are very long and you want something that will stop as soon
as it hits the first duplicate, you could use recursion and maps:
function has-dupes ($in as xs:integer*, $found as map(*)) {
map:contains($found, head($in)) or has-dupes(tail($in), map:put($found,
head($in), 0)
}
then
has-dupes($sequence, map{})
Michael Kay
Saxonica
mike(_at_)saxonica(_dot_)com
+44 (0) 118 946 5893
On 25 Mar 2015, at 10:58, Leo Studer leo(_dot_)studer(_at_)varioweb(_dot_)ch
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
Hello
I have a sequence and want to know whether there are duplicate values in it.
I came out with the following and think there must be an easy solution. Any
suggestion?
let $sequence :=(1,12,14,17,22,12) return (count(distinct-values($sequence))
ne count($sequence))
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