From: 7stud -- <bbxx789_05ss@...>
Date: 2009-09-14T03:25:20+09:00
Subject: Re: module to overwrite method defined via define_method

Gaspard Bucher wrote:
> Hi List !
> 
> I found a tricky thing: if you use define_method and then include a
> module that contains a method with the same name, the method in the
> module is just ignored.
> 
> Why is that so ?
> 

By the way, you can get the lookup order using the ancestors method:

module Redef
  def foo
    puts "'foo' from module"
  end
end

class A
  define_method("foo") do
    puts "'foo' from define_method"
  end

  include Redef
end


p A.ancestors

--output:--
[A, Redef, Object, Kernel]


Although, ancestors() doesn't include the singleton classes:

module Redef
  def foo
    puts "'foo' from module"
  end
end

class A
  def foo
    puts "foo from class A"
  end

  def initialize
    class << self
      include Redef
    end
  end

end

a = A.new
a.foo
p A.ancestors


--output:--
[A, Object, Kernel]
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