define variable $LU-ELEMENTS as element(lu-elements) {
<lu-elements>
<lu-element>
<zone>title</zone>
<element>title</element>
<namespace>metasearch</namespace>
</lu-element>
</lu-elements>
}
define function element-namespace($zone as xs:string) as xs:string
{
let $namespace := $LU-ELEMENTS/lu-element[.//zone eq $zone]/namespace
return if ($namespace) then $namespace
else ""
}
let $zone := "title"
let $text := "hello"
let $n as xs:string := let $namespace := $LU-ELEMENTS/lu-element[.//zone eq
$zone]/namespace
return if ($namespace) then $namespace
else ""
let $f := element-namespace($zone)
return <behavior>
<a-string>{$n}</a-string>
<a-string-2>{$f}</a-string-2>
<not-a-string>{element-namespace($zone)}</not-a-string>
</behavior>
So why does the last one behave differently?
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