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# hashref
$h_ref->{try};
...

# scalar
$$scalar_ref;

# hash
my %hash = %$hash_ref;

# array
my @array = @$aref;

# hash
my %hash = %{ $hash_ref->{inner_href} };

# array
my @array = @{ $aref->[0] };

# array from href
my @array = @{ $href->{inner_array} };

# hash from array ref
my %hash = %{ $array->[0] };