blah

test.rb

#!/usr/bin/env ruby

class R
  def self.val
    @val ||= :bad
  end

  def self.val= o
    @val = o
  end
end

# This way creates an anonymous class.
class A < Class.new(R) { |x| x.val = :good }; end

# This way doesn't
B = Class.new(R) { |x| x.val = :good }

# Let's peek at ancestors
p A.ancestors #=> [A, #<Class:0x0000565135ce74d0>, R, Object, Kernel, BasicObject]
p B.ancestors #=> [B, R, Object, Kernel, BasicObject]

# A
p A.val            #=> :bad

# #<Class:0x0000565135ce74d0>
p A.superclass.val #=> :good

# R
p A.superclass.superclass.val #=> :bad

# R
p B.val #=> good