> There are two complementary functions empty($seq) and exists($seq).
>
> I would expect any decent optimizer to generate exactly the same code
> for these as for count($x)=0 - but I guess there are processors out
> there that don't have decent optimizers.

Thank you, Mike.

The name "exists" does not describe very well what the function actually
does. A far-better name is "non-empty", and it is immediately perceived as
the really complementary function to empty().


=====
Cheers,

Dimitre Novatchev.
http://fxsl.sourceforge.net/ -- the home of FXSL




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