From: Bill Atkins <batkins57@...>
Date: 2005-01-05T00:23:27+09:00
Subject: Re: Composition or Module

Module seems more natural to me, but maybe "Representable" would be a
better name.


On Tue, 4 Jan 2005 23:33:10 +0900, Tomoyuki Kosimizu
<greentea@fa2.so-net.ne.jp> wrote:
> Hi,
> 
> Let me hear your opinions, composition or module.
> 
> Composition:
> 
>   class Representation
>     def to_string(obj)
>       return sprintf('%s=%s', obj.class, obj.value)
>     end
>   end
> 
>   class Domain
>     def initialize
>       @value = 10
>     end
>     attr_reader :value
> 
>     def to_s
>       Representation.new.to_string(self)
>     end
>   end
> 
>   puts(Domain.new)
> 
> or Module:
> 
>   module Representation
>     def to_s
>       return sprintf('%s=%s', self.class, @value)
>     end
>   end
> 
>   class Domain
>     include Representation
> 
>     def initialize
>       @value = 10
>     end
>   end
> 
>   puts(Domain.new)
> 
> greentea@fa2.so-net.ne.jp
> 
> 


-- 
$stdout.sync = true
"Just another Ruby hacker.".each_byte do |b|
  ('a'..'z').step do|c|print c+"\b";sleep 0.007 end;print b.chr
end; print "\n"