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RE: MS-FO-LC1-034: fn:concat without arguments not useful

From: Xavier Franc <xfranc@online.fr>
Date: Mon, 29 Sep 2003 16:15:05 +0200
Message-ID: <3F783E69.10104@online.fr>
To: public-qt-comments@w3.org

 >> Concat with one argument can be useful if the argument is extended to
 >> allow sequences

This can also be achieved with string-join with an empty separator.

However, for the sake of regularity and convenience I feel that concat could also
accept a string sequence in each argument (i.e. replace string? by string* in the
  prototype).

Since concat is a special function (with unlimited # of arguments)
we just have to rewrite:

     concat(s1, s2 ...sN)
as
     concat( (s1, s2 ...sN) )

and then we can treat concat and string-join similarly,
without additional complexity.

> Michael:
> Thank you for your comment.  The WGs discussed this on 9/16/2003 and
> decided to remove the zero and one argument version of fn:concat().
> 
> All the best, Ashok
> 
>> -----Original Message-----
>> From: public-qt-comments-request@w3.org [mailto:public-qt-comments-
>> request@w3.org] On Behalf Of Michael Rys
>> Sent: Monday, June 30, 2003 6:35 PM
>> To: public-qt-comments@w3.org
>> Subject: MS-FO-LC1-034: fn:concat without arguments not useful
>> 
>> 
>> Class: Technical
>> 
>> Xpath 1.0 concat required at least two args.
>> 
>> Concat() without arguments is of very limited use and should be
>> disallowed (automatically generating code can easily recognize this
>> case).
>> 
>> Concat with one argument can be useful if the argument is extended to
>> allow sequences and should be kept in that case. Otherwise it could
>> still be cut.

-- 
Xavier FRANC
Received on Monday, 29 September 2003 10:15:26 UTC

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