chaining example

gistfile1.rb

class Search
    class << self
      def where(args)
       Search.new(args)
      end
    end
    
    def initialize(args)
      @search_arguments = args
    end
    
    def where(args)
      @search_arguments.merge!(args)
      self
    end
    
    def each
      results.each{|a| yield(a)}
    end
    
    def results
      #Go and get some results!
    end
end

 #irb(main):084:0> Search.where(:foo => 'bar').where(:magic_number => 3)
 #=> #<Search:0x10aa5e9d8 @search_arguments={:foo=>"bar", :magic_number=>3}>