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my @ar   = qw/ foo bar baz /;
my %hash = ( one => @ar );
...
__output__

foo

my @ar   = qw/ foo bar baz /;
my %hash = ( one => \@ar );
...
__output__

foobarbaz

use Array::Compare;

...
__output__

the same

use Test::More;

...
__output__

the same