Add element to an array if it's not there already

Question

I have a Ruby class

class MyClass
  attr_writer :item1, :item2
end

my_array = get_array_of_my_class() #my_array is an array of MyClass
unique_array_of_item1 = [         


        

Answer 1

I'm not sure if it's perfect solution, but worked for me:

    host_group = Array.new if not host_group.kind_of?(Array)
    host_group.push(host)