obj.nil? vs. obj == nil

Question

Is it better to use obj.nil? or obj == nil and what are the benefits of both?

Answer 1

I find myself not using .nil? at all when you can do:

unless obj
  // do work
end

It's actually slower using .nil? but not noticeably. .nil? is just a method to check if that object is equal to nil, other than the visual appeal and very little performance it takes there is no difference.