From: nobu.nokada@...
Date: 2002-08-27T12:24:16+09:00
Subject: Re: proxy class / little factory

Hi,

At Tue, 27 Aug 2002 12:01:25 +0900,
Tom Sawyer wrote:
> maybe someone can help me. i am trying to make a class such that when it
> is used it acts like one or another class based on an attribute. i wrote
> this little factory version:
(snip)
> this could work (i actually haven't run it) but the problem is that the
> type of the object returned is not Text, but TextSingle or TextMultiple.
> i need it to be Text. eg.
> 
>   atext = Text.new(1)
>   p atext.class  # --> TextSingle
> 
> for it it needs to be:
> 
>   p atext.class  # --> Text
> 
> suggestions?

First, which do you want, an instance of distinct classes, or
one of a particular class?

What about these? ;-)

  class Text
    class TextSingle; def class; Text end end
    class TextMultiple; def class; Text end end
  end

or

  class Text
    class TextSingle; def self.to_s; "Text" end end
    class TextMultiple; def self.to_s; "Text" end end
  end

-- 
Nobu Nakada