Question

%HoH = (
Group1=> {
    member1=> "fred",
    member2=> "barney",
},
 Group2 => {
    member1   => "george",
    member2   => "jane",  
},

);

How can I access second value or second key of HoH I want to access member2 of each group keys and their associated values.I don’t know my key name , I just know it is second key

   foreach $key (keys %HoH){
        foreach $value (keys %{$HoH{$key}}){
            print $key."\n";
         }
   }

Answer 1

You cannot access neither “second key” nor “second value” because there’s no particular order of hash elements. print Dumper(\%HoH); will likely give you another order of hash elements than the order you initializer used. You should use hash of arrays if you want a particular order.

my %HoH = (
    Group1=> [ "fred", "barney" ],
    Group2 => [ "george", "jane" ]
);

After that you can access “fred” as $HoH{Group1}->[0] and “jane” as $HoH{Group2}->[1].