From: ts <decoux@...>
Date: 2003-01-23T03:15:00+09:00
Subject: Re: extend (Re: a single class that supports multiple facets/interfaces)

>>>>> "G" == Gavin Sinclair <gsinclair@soyabean.com.au> writes:

G> Apparently, using "extend" merely hooks something up behind the
G> scenes, rather than dumping a lot of information into the target
G> module.

 Well, if you have 

   module M end
   module N end
   class A
      include M
      extend N
   end

 internally (if you don't modify what do ruby by default) you'll have

    A ===> [M] ===> Object
    |                 |
    |                 |
    v                 v
   (A) ==> [N] ===> (Object)

 Where (A), (Object) are the singleton classes associated with A, Object
       [M], [N] are the proxy classes for M, N

 This is the same for a module (rather than class A)


Guy Decoux