I try to iterate over a (nested) hash.
In my program I use some recursive function within the first while loop and call the second while loop later. This is a minimal example of what I am doing. The problem is, that this is an infinite loop, but I don't really understand why. I guess it is because of some internal states of perl. 
my %test = ('a' => {'b' => 'b'});

while ( my $name, $value ) = each(%test) )
{
    print $name1;
    while ( my ( $name2, $value2 ) = each(%test) )
    {
        print $name2;
    }
}

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I tried to use clone on the hash to get around the problem, but it did not work. What is the best way to get around this problem (not iterating twice is not an option at the moment)?

I use perl v5.10.0 if that matters.

Update:: Using clone creates an infinite loop even without the second while loop.

In reply to Nested while each over a hash -> infinite loop by Eythil

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