programming-examples/ruby/Data_Structures/visitor.rb
2019-11-15 12:59:38 +01:00

16 lines
314 B
Ruby

# This file contains the Ruby code from book of
# "Data Structures and Algorithms
# with Object-Oriented Design Patterns in Ruby"
# by Bruno R. Preiss.
#
# Copyright (c) 2004 by Bruno R. Preiss, P.Eng. All rights reserved.
class Visitor < AbstractObject
abstractmethod :visit
def done?
false
end
end