Here you go: 

my ($member,$total) = 'johndoe';
$total += $main{$_}{$member} for keys %main;

[download]
If you want to do that for each member, it would be convenient to define a %total hash with member names as keys. It could go like this: 
my %total;
for my $month (keys %main) {
    $total{$_} += $main{$month}{$_} for keys %{$main{$month}};
}

[download]
I think %main could use a better name.

After Compline,
Zaxo

In reply to Re: Iterating over hash elements by Zaxo
in thread Iterating over hash elements (was: Sorry to bother you) by Anonymous Monk

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