From: Gavin Sinclair <gsinclair@...>
Date: 2002-12-14T23:48:42+09:00
Subject: Re: Is it wise to extend Matrix?

From: "Russ Freeman" <russ@freesoft.co.uk>


> >Of course, I think there are some implementation problems he had with
> the type >that was returned from some methods - I lost track.  But maybe
> he can come up >with a new kind of delegation that solves that.
>
> Isn't there a Delegate mixin that can take the pain away?
>
> Russ


Yes, he would begin with

  require 'delegate'

  class MyMatrix < DelegateClass(Matrix)
    # ...
  end

and by examining the Pickaxe section on it, because when I tried delegating
Array I had trouble instantiating my new class.

When I mentioned a "new kind of delegation" I meant that the return values of
the delegated methods might be doctored (class-wise).  I don't know whether
that would be an issue (as in the "Inheritance Question" thread) and I
certainly don't know if my off-the-cuff new-delegation thought would be
feasible.

Gavin