Thanks!

I tried Data::Dumper, and things get weirder.

If I print the hash with Data:Dumper, the problem disappears.

So, in the following case sometimes while fails:
while (($s_pattern,$p_pattern) = 
                         each %{$patterns{$gen}}) {
# ...
}

[download]
But in the following case the while loop is always entered: 
print Dumper(%{$patterns{$gen}});
while (($s_pattern,$p_pattern) =
                         each %{$patterns{$gen}}) {
# ...
}

[download]
Nothing else changes!

Mystery...

Marco

In reply to Re: trouble with each and a hash of hashes by marcokuma
in thread trouble with each and a hash of hashes by marcokuma

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