contstants and inheritance

gistfile1.rb

class Account
  def initialize
    @host = self.class::HOST
  end
end

class A < Account
  HOST = "host A"
end

class B < Account
  HOST = "host B"
end

p A.new #=> #<A:0x1a2d5cc @host="host A">
p B.new #=> #<B:0x1a2d4dc @host="host B">