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[Bug 19158] New: Getting all vales from a map

From: <bugzilla@jessica.w3.org>
Date: Mon, 01 Oct 2012 09:53:45 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-19158-523@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=19158

           Summary: Getting all vales from a map
           Product: XPath / XQuery / XSLT
           Version: Working drafts
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XSLT 3.0
        AssignedTo: mike@saxonica.com
        ReportedBy: jakub@maly.cz
         QAContact: public-qt-comments@w3.org


To get all values from a map as a single sequence I write 
for $k in map:keys($mymap) return $mymap($k) 
which is long and also probably ineffective (O(NlogN)?)

I propose to add a function 
map:values($mymap)

which would return all values from a map as a sequence. Unlike the code above,
it could be implemented in O(N). 


Also, when I have a map entry (a map containing one item) in variable $entry,
I can write map:keys($entry) to get the key of the entry. 
To get the value, I must write 
$entry(map:keys($entry)), which is a bit convoluted and could be replaced by 
map:values($entry).

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Received on Monday, 1 October 2012 09:53:50 GMT

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