Re: Putting an array into a hash gives an unexpected reference to the hash itself.

G'day polarbear,

What you are describing is the default behaviour for Data::Dumper. You can change it by setting $Data::Dumper::Deepcopy:

$ perl -Mstrict -Mwarnings -e '
use Data::Dumper;
$Data::Dumper::Deepcopy = 1;

my @maintainers = qw/ worker@company.com manager@company.com /;

my %services = (
    service1 => { email => \@maintainers },
    service2 => { email => \@maintainers },
);

print Data::Dumper->Dump( [ \%services ], [qw/*services/] );
'
%services = (
              'service1' => {
                              'email' => [
                                           'worker@company.com',
                                           'manager@company.com'
                                         ]
                            },
              'service2' => {
                              'email' => [
                                           'worker@company.com',
                                           'manager@company.com'
                                         ]
                            }
            );
[download]

Update: I may have misinterpreted "I don't want the lists connected in any way." as the cross-referencing of the lists output by Data::Dumper rather than the lists pointed to by the arrayrefs. If this is the case, the email => [ @maintainers ] solution would be the way to go. Thanks, frozenwithjoy.

-- Ken

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Re^2: Putting an array into a hash gives an unexpected reference to the hash itself. by frozenwithjoy (Priest) on Nov 07, 2012 at 23:39 UTC
Just a warning though that if you change one (e.g., `push $services{"service1"}{"email"}, "xxx";`), they will both change: `%services = ( 'service1' => { 'email' => [ 'worker@company.com', 'manager@company.com', 'xxx' ] }, 'service2' => { 'email' => [ 'worker@company.com', 'manager@company.com', 'xxx' ] } );` [download]	[reply] [d/l] [select]
Re^3: Putting an array into a hash gives an unexpected reference to the hash itself. by kcott (Archbishop) on Nov 08, 2012 at 00:02 UTC
++ Thanks for that. It looks like I misinterpreted the question. I've updated my response. -- Ken	[reply]