scalar grep defined($_), values %hash

If you don't want to grep for defined values, delete the values instead of setting them to undef, then you can the output of scalar %hash.

See perldata on what exactly the scalar value of a hash is.

Update: fixed syntax error. Sorry for not writing the update notice in the first place.

In reply to Re: hash count by moritz
in thread hash count by vinoth.ree

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