Question

I have an array of objects and I want to add another object just if the attribute object.id doesn’t match any of the ids of the objects I have in the array.

I know I can go through the array and checking one buy one, but is there any easier way of doing so in Ruby?

Answer 1

array << foo unless array.any? { |e| e.id == foo.id }

or

array << foo unless array.map(&:id).include?(foo.id)