Or even 
my $non_empty = grep { $_ ne "" } values %a;

[download]
which is a little clearer IMHO, and probably a tiny bit faster as well :-)

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re^2: Count non-empty hash values by Joost
in thread Count non-empty hash values by pboin

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