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Bug 1417 - [XQuery] Grammar: void() and empty()
Summary: [XQuery] Grammar: void() and empty()
Status: CLOSED FIXED
Alias: None
Product: XPath / XQuery / XSLT
Classification: Unclassified
Component: XQuery 1.0 (show other bugs)
Version: Last Call drafts
Hardware: PC Windows XP
: P2 normal
Target Milestone: ---
Assignee: Don Chamberlin
QA Contact: Mailing list for public feedback on specs from XSL and XML Query WGs
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Reported: 2005-05-13 21:13 UTC by Michael Rys
Modified: 2005-06-11 03:32 UTC (History)
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Description Michael Rys 2005-05-13 21:13:30 UTC
The WG group recently has changed the sequence type empty() to void(). 

During our review, customers have expressed dismay about this change and feel, 
that this will obfuscate the naming of an empty sequence: we now have voids 
and empty sequences and for casual users, their relationship is not 
necessarily clear. 

However, they also do not want to change the function empty() and think that 
the differentiation based on number of arguments and syntactic contexts is 
sufficient.
Comment 1 Don Chamberlin 2005-06-11 03:31:54 UTC
Michael,
On May 19, 2005, the Query Working Group discussed your comment and decided to 
change the keyword void() to empty-sequence(). Since you were present at this 
discussion, I will mark this comment Fixed and Closed.