Subject: RE: [xsl] Possible to pass 'empty sequence' to function? From: "Michael Kay" <mike@xxxxxxxxxxxx> Date: Thu, 31 Mar 2005 11:40:34 +0100 |
> When is it a good idea to type a variable/param as "xs:string?" - what > benefits does it bring over not specifying the "as" attribute? > I think it's always a good idea to declare the data types of your parameters: it documents the assumptions that the writer of a function or template is making about the way it will be called, it catches many programming errors (such as supplying an empty sequence to a function that wasn't written to expect one), and it gives the optimizer more information to work with. Michael Kay http://www.saxonica.com/
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