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[Bug 25502] New: Binary Operators on maps

From: <bugzilla@jessica.w3.org>
Date: Tue, 29 Apr 2014 15:41:49 +0000
To: public-qt-comments@w3.org
Message-ID: <bug-25502-523@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=25502

            Bug ID: 25502
           Summary: Binary Operators on maps
           Product: XPath / XQuery / XSLT
           Version: Working drafts
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Requirements for Future Versions
          Assignee: jim.melton@acm.org
          Reporter: liam@w3.org
        QA Contact: public-qt-comments@w3.org

Copied from mailing list by Liam -
https://lists.w3.org/Archives/Member/w3c-xsl-query/2014Apr/0036.html


This is an attempt to flesh out an idea from Mohamed (see
https://lists.w3.org/Archives/Member/w3c-xsl-query/2014Feb/0065.html).

1. map1  + map2 

If a and b are both maps, then a  + b is defined as map:new( a, b).  The
following expressions are equivalent:

$m2 := map:new( $m1, { "foo" : "bar" }) 
$m2 := $m1 + { "foo" : "bar" }


2. map - atomic

If a is a map and b is an atomic value, then a - b is defined as map:remove(a,
b). The following expressions are equivalent:

$m2 := map:remove( $m1, "foo") 
$m2 := $m1 - "foo"

Jonathan

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