FunctX XSLT Function Library > Sequences > Distinct Values >

functx:are-distinct-values

Whether all the values in a sequence are distinct

Description

The functx:are-distinct-values function returns true if all of the values in the sequence are distinct; i.e., no one value appears more than once in the sequence. Distinctness is based on type equality.

Arguments and Return Type

XSLT Function Declaration

<xsl:function name="functx:are-distinct-values" as="xs:boolean"
              xmlns:functx="http://www.functx.com">
  <xsl:param name="seq" as="xs:anyAtomicType*"/>

  <xsl:sequence select="
   count(distinct-values($seq)) = count($seq)
 "/>

</xsl:function>

Examples

functx:are-distinct-values( (1,2,1,3))

false

functx:are-distinct-values( (1,2,1,3,2.0))

false

functx:are-distinct-values( (1,2,3) )

true

See Also

History