grep length, values %a

[download]
is even faster.
ooh nice :-)

I thought of this one: 

grep $_, values %a

[download]
Which might be even faster (I haven't tested it), but whether it's valid depends on the OP's meaning of "empty"..

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

In reply to Re^5: Count non-empty hash values by Joost
in thread Count non-empty hash values by pboin

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