From: Rajinder Yadav <devguy.ca@...>
Date: 2009-10-13T08:30:09+09:00
Subject: Enumerating and mixin.

I am trying to learn the correct way to enumerate in Ruby, a few things are 
missing in my 1st stab at this. How do I use mixin with Enumerable to rewrite 
the class I have below? I can't seem to find a concrete example online?

I know I am also missing code to override <=> if I wanted to do sorting, are the 
other overrides I am missing?

How do I make my code more elegant, Thanks!


class Vowels
    def initialize
       @index = 0
       @list = %w(a e i o u)
    end

    def each
       while( @index < @list.size )
          if @index >= @list.size
             yield nil
             exit
          else
             yield @list[@index]
             @index += 1
          end
       end
    end

    def first
       @index=0
    end
end

obj = Vowels.new

obj.each { |x| puts x }



-- 
Kind Regards,
Rajinder Yadav

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