From: Philipp Meier <meier@...>
Date: 2002-06-22T03:35:24+09:00
Subject: Mixin using append_features and class<<self do not work together


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Hello to all,

First, I'm new to ruby so please forgive if I read over the solution in
the ruby doc or pickaxe book.
I'd like to know if it's possible to add a method to an object
_instance_ at runtime? I tried sth. like instance_eval and "class <<
self" which works. But do I add a mixin at runtime?

I have a Mixin like this:

Module B
  def B.append_features(aClass)
    def aClass.foo
      "foo"
    end
  end
end

o =3D Object.new
o.instance_eval<<-"end_eval"
  include B
end_eval

But o.foo does not exist!?

Is there a way to use append_features together with class<<self ?

-billy.
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   eL=F6sungen       89077 Ulm                     Fax: +49-731-399 499-9

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