Description
The functx:index-of-match-first function returns an integer representing the first position of a substring that matches $pattern within $arg. If $arg does not match $pattern, the empty sequence is returned.
Arguments and Return Type| Name | Type | Description |
|---|
$arg |
xs:string? |
the string |
$pattern |
xs:string |
the pattern to match |
| return value |
xs:integer? |
XSLT Function Declaration| See XQuery definition. | <xsl:function name="functx:index-of-match-first" as="xs:integer?"
xmlns:functx="http://www.functx.com">
<xsl:param name="arg" as="xs:string?"/>
<xsl:param name="pattern" as="xs:string"/>
<xsl:sequence select="
if (matches($arg,$pattern))
then string-length(tokenize($arg, $pattern)[1]) + 1
else ()
"/>
</xsl:function>
|
Examples| XPath Example | Results |
|---|
functx:index-of-match-first(
'abcdabcdabcd','abc') |
1 |
functx:index-of-match-first(
'abcdabcdabcd','bcd') |
2 |
functx:index-of-match-first('a1234','\d') |
2 |
functx:index-of-match-first('abc abc','\s') |
4 |
functx:index-of-match-first('abc abc','z') |
() |
See AlsoHistory |
Recommended Reading: 
|
