From: Markus <markus@...>
Date: 2004-09-24T13:47:55+09:00
Subject: Re: enum pattern


Just to get you thinking in other directions (WARNING: THIS CODE WAS
TYPED OFF THE TOP OF MY HEAD AND HAS NOT BE DEBUGGED (OR EVEN RUN)):



class DaysOfWeek < string
    Names = %w{ monday tuesday wednesday thursday friday saturday sunday }
    Objects = Hash.new
    Names.each { |day|
        eval %Q{
            def DaysOfWeek.#{day}
                Objects["#{day}"] ||= DaysOfWeek.new("#{day}")
                end
            }
        }
    def DaysOfWeek.to_list
        Objects.values
        end
    def DaysOfWeek.from_s(content)
        Objects[content]
        end
    private
        def initialize(str)
            super(str)
            end
    end

Something along these lines would do pretty much what the original did.

-- MarkusQ