Hello monks!
I want to find the common keys in two hashes.
I found this code in perlfaq:
my @common = ();
foreach (keys %hash1) {
    push(@common, $_) if exists $hash2{$_};
}
# @common now contains common keys

[download]
but I wanted to ask, does this code check also if any key of hash2 is in hash1? Or must I write it again so as to get the keys of hash2 that are present in hash1?
Thank you!

In reply to common keys in two hashes by Anonymous Monk

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