Another place a unary plus is often useful is to protect against the effects of the fat comma:

use constant MONIKER => 'name';

my %hash1 = ( +MONIKER => 'Monica' );  # compared with...
my %hash2 = (  MONIKER => 'Monica' );

use Data::Dumper;
print Dumper(\%hash1, \%hash2);

[download]
use Moops; class Cow :rw { has name => (default => 'Ermintrude') }; say Cow->new->name

In reply to Re^2: shift implicit dereference by tobyink
in thread shift implicit dereference by Lennotoecom

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