> Observe, ye doubter:
> 
> $ perl -le '@vars = qw(one two three two); @h{@vars} - (); print
>   "Duplicate in (@vars)" unless keys %h == @vars; @vars = qw(one two three
> four);
> @hh{@vars} = (); print "Duplicate" unless keys %hh == @vars'
> Duplicate in (one two three two)
> $
> 
> Because.. what do we know about hash keys?  They must be... *prompt* *prompt*

Ah-ha!  I stand corrected (and informed).
Thank you, oh wise one.

-T

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