Description
The functx:number-of-matches function counts the number of times a string matches a particular pattern (regular expression). It does not count overlapping regions.
Arguments and Return Type| Name | Type | Description |
|---|
$arg |
xs:string? |
the string to test |
$pattern |
xs:string |
the regular expression |
| return value |
xs:integer |
XQuery Function Declaration| See XSLT definition. | | XQuery Syntax for July 2004 - January 2007 (1.0): |
|---|
declare namespace functx = "http://www.functx.com";
declare function functx:number-of-matches
( $arg as xs:string? ,
$pattern as xs:string ) as xs:integer {
count(tokenize($arg,$pattern)) - 1
} ; | | XQuery Syntax for May 2003: |
|---|
declare namespace functx = "http://www.functx.com"
define function number-of-matches
( $arg as xs:string? ,
$pattern as xs:string ) as xs:integer {
fn:count(fn:tokenize($arg,$pattern)) - 1
} |
Examples| XQuery Example | Results |
|---|
functx:number-of-matches('abcabc','ab')
|
2
|
functx:number-of-matches('12345','\d')
|
5
|
functx:number-of-matches('aaaaaa','aaa')
|
2
|
See Also| fn:matches | Whether a string matches a regular expression |
History |
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