Need vendor class identifier advice
niall.oreilly at ucd.ie
Mon Sep 16 10:28:22 UTC 2013
On 13 Sep 2013, at 22:13, Doug Barton wrote:
> I could create 2 match classes and put 'deny class members of' options
> in for both of them, but that seems inefficient. :) I'm trying to write
> a custom boolean match like this:
"... seems inefficient" indeed; but by how much, I wonder?
ISTR reading somewhere that "subclass" matching is significantly
more efficient than complex "match if ..." specifications. This
may compensate for the overhead of the extra "deny".
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