From: Michael Fellinger <m.fellinger@...>
Date: 2010-08-22T03:35:02+09:00
Subject: Re: Adding *each*

On Sun, Aug 22, 2010 at 2:45 AM, Ralph Shnelvar <ralphs@dos32.com> wrote:
> I'm trying to wrap my head around how to do an "each" for objects of a class that I have created.
>
> Consider this contrived example
>  class X
>    def initialize
>      @x = [10, 'a', 'c', 9, 8]
>    end
>  end
>
> In Ruby 1.8, what's the magic incantation so that I can do
>
>  x = X.new
>  x.each {|y| puts y}
>
> I have read and reread Dave Thomas'*Programming Ruby 1.9* and ... well ...  I think I have to define *each* in class X and add some enumerable stuff ... but ... I just don't get it.

class X
  include Enumerable

  def initialize
    @x = [10, 'a', 'c', 9, 8]
  end

  def each(&block)
    @x.each(&block)
  end
end


-- 
Michael Fellinger
CTO, The Rubyists, LLC
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