how to check if a hash is empty in perl

Question

I use the following code to check if the hash is empty. Is there a better method and is this safe to use?

if (!keys %hash) { print \"Empty\";} 

Answer 1

if (%hash)

Will work just fine.

From perldoc perldata:

If you evaluate a hash in scalar context, it returns false if the hash is empty. If there are any key/value pairs, it returns true; more precisely, the value returned is a string consisting of the number of used buckets and the number of allocated buckets, separated by a slash.