in reply to Cheking for duplicates

Your problem would appear to be that you're testing the hash for being empty, c/w a test for the existence of an individual key on the hash i.e. change unless (! %seen) to unless (! %seen->{$hosts->name}), or some such...

A user level that continues to overstate my experience :-))

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Re^2: Cheking for duplicates
by blackadder (Hermit) on Sep 17, 2009 at 12:54 UTC
    Many Thanks indeed...It worked but like this 
    foreach my $hosts (@$hosts_views)
    {
        unless ( $seen{$hosts->name})
        {
            printf "%s\n",$hosts->name;
        }
    }

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