ruby-1.9.2-p0 > 10.times.map{ 'foo' }.map{|v| puts v.object_id } 2152510320 2152510280 2152510200 2152510160 2152510120 2152510060 2152510020 2152509980 2152509920 2152509780 => [nil, nil, nil, nil, nil, nil, nil, nil, nil, nil] ruby-1.9.2…