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How can I know how many entries are in a hash?by faq_monk (Initiate) |
on Oct 08, 1999 at 00:20 UTC ( [id://625]=perlfaq nodetype: print w/replies, xml ) | Need Help?? |
Current Perl documentation can be found at perldoc.perl.org. Here is our local, out-dated (pre-5.6) version:
If you mean how many keys, then all you have to do is take the scalar sense of the
$num_keys = scalar keys %hash; In void context it just resets the iterator, which is faster for tied hashes.
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