How to create key-value string sequence from another plain sequence in XPath 2.0

Question

I needs an XSLT function to create key-value strings sequence ( 'key1_val1', 'key2_val2', 'key3_val3' ) from plain strings sequence ( 'key1', 'val1', 'key2', 'val2', 'key3', 'val3' ) .

I was stopped on the following code and have no ideas to continue:

<xsl:function name="bx:generate-pairs" as="xs:string*">
    <xsl:param name="seq" as="xs:string*"/>
    <xsl:sequence select="for $key in $seq return ..."/>
</xsl:function>

XSLT processor Saxon 9.3

Answer 1

你在找

for $i in (1 to count($seq))[. mod 2 = 1] return concat($seq[$i], '_', $seq[$i + 1])