From: Kent Dahl <kentda@...>
Date: 2002-07-23T21:06:18+09:00
Subject: Re: define_method with super in the proc

ts wrote:
> Tue Oct 16 23:29:26 2001  Yukihiro Matsumoto  <matz@ruby-lang.org>
> 
>         * eval.c (rb_call0): self in a block given to define_method now be
>           switched to the receiver of the method.

Thank you. Since this is on the main branch, I take it the best bet
would be to compile from CVS and stay on the 1.7.* branch, if we want to
use define_method.

However, after compiling it up (ruby 1.7.2 (2002-07-13) [i686-linux]), 
I notice that this doesn't solve the super problem Tom had. (Which
probably means I probably was of on a big goose chase.)

Anyway, back to the original problem. Tom, you could alias the super
method and pass its aliased name into the makeproc and call it
explicitly:

  class A
    attr_reader :x, :y
    def doit
      @x = 5  
    end
  end
  
  def makeproc( supername ) 
    Proc.new {
      self.send(supername)
      @y = 10
    }
  end
  
  B = Class.new(A)
  B.class_eval {
    alias  doit_super_A doit 
    define_method(:doit, makeproc(:doit_super_A) ) 
  }
  b = B.new
  b.doit 
  p b #=> #<B:0x401c92f8 @x=5, @y=10>


HTH, and sorry for depressing you in my previous post :-)

-- 
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