Description
The functx:substring-before-last function returns the part of $arg that appears before the last occurrence of $delim. If $arg does not contain $delim, a zero-length string is returned.
Arguments and Return Type| Name | Type | Description |
|---|
$arg |
xs:string? |
the string to substring |
$delim |
xs:string |
the delimiter |
| return value |
xs:string |
XQuery Function Declaration| See XSLT definition. | declare namespace functx = "http://www.functx.com";
declare function functx:substring-before-last
( $arg as xs:string? ,
$delim as xs:string ) as xs:string {
if (matches($arg, functx:escape-for-regex($delim)))
then replace($arg,
concat('^(.*)', functx:escape-for-regex($delim),'.*'),
'$1')
else ''
} ; |
Examples| XQuery Example | Results |
|---|
functx:substring-before-last(
'abc-def-ghi', '-') |
abc-def |
functx:substring-before-last('abcd-abcd', 'ab') |
abcd- |
functx:substring-before-last('abcd-abcd', 'x') |
zero-length string |
Depends OnSee AlsoHistory |
Recommended Reading: 
|
