[xsl] [Summary] 4 equivalent XPath expressions for concatenating three a

Hi Folks,

Here are 4 equivalent XPath expressions for concatenating 'Section' and ': ' 
and 1 to produce 'Section: 1'. The latter 3 use XPath 3.0 capabilities, 
particularly partial function application and specifying the arity of the 
concat function.

-----------
XPath #1
-----------
concat('Section', ': ', 1)

-----------
XPath #2
-----------
let $concat3 := concat#3                (: Specify the arity of the concat 
function :)
return $concat3('Section', ': ', 1)

-----------
XPath #3
-----------
let $concat3 := concat(?,?,?)           (: Partial function application :)
return $concat3('Section', ': ', 1)

-----------
XPath #4
-----------
let $concat3 := concat#3('Section', ?, ?)            
return $concat3(': ', 1)

/Roger

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