I have been using Perl since the 4.x days, so I am having the devil's own time trying to figure out how to detect an empty hash in 5.32.1.

It seems to me that

scalar(%hash)
should return 0 if the hash is empty. Similarly, another approach would be !%hash, but this appears to return false. Similarly, 
my @a = keys(%hash);
if ($#a == -1) ...

[download]
doesn't work, because $#a returns 0! What am I missing/doing wrong?

In reply to How to test for empty hash? by scareduck

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