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ACTION A-641-13

From: Tim Mills <tim@cbcl.co.uk>
Date: Thu, 5 May 2016 11:20:13 +0100
To: public-xsl-query@w3.org
Message-ID: <2d751cfa-3529-8d0b-00fd-8280b3cb198f@cbcl.co.uk>
ACTION A-641-13 (bug 29571) on Jonathan and Tim to agree a Note to
add to the spec to make it clear to readers that when T is a list type, T(x)
cast as T will typically fail.

I suggest the following text


As a consequence of the rules for casting (Section 19 Casting FO31), for an expression E and type T, where
1. T is a list type, or T is a union type of which a list type is in its transitive membership, and

2. (E instance of L) eq true


E castable as L

is false.  For example xs:NMTOKENS("a b c") castable as XS:NMTOKENS is false.

Furthermore, if L is a list type with a minimum length facet of zero, () castable as L is false.

Perhaps a similar note should be added to cover E cast as L.
Received on Thursday, 5 May 2016 10:20:44 UTC

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