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Re: A bad idea to use the XML Schema list type?

  • From: David Carlisle <davidc@n...>
  • To: costello@m...
  • Date: Mon, 9 Feb 2009 15:37:41 GMT

Re:  A bad idea to use the XML Schema list type?

> Don't use the XML Schema list type.

personally I'd say "dont use (XSD) Schema" but if you are using it then
it makes sense to use technology that understannds its quirks.

In a schema aware xslt 2 transform, for example the sum of the numbers
would just be

<value-of select="sum(Lottery-Drawing/data())"/>

which isn't so bad,

even without a schema aware xslt processor it's only

<value-of select="sum(tokenize(Lottery-Drawing,'\s+'))"/>

If you restrict to xslt 1 then

> With XSLT 1.0 it requires creating a named template that splits the
> string "89 12 41 66 2 26" and then sums the individual tokens. Not an
> easy task 

It's not a very hard task (not much harder than writing the schema
fragments you showed) and it only needs to be done once, if you just
call an exslt template or extension function that splits up a white
space separated string then you don't need to know how that's
implemented, only how it is called.

Are you really saying that xhtml shouldn't have a class attribute that
takes a list of classes, <div class="good bad ugly"><p>....
and instead have a syntax more like

or that xslt 2 shouldn't allow you to say 
<xsl:template mode="a b c">

and should instead have introduced a mode element child of xsl:template?


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