From: Christoph <chr_news@...>
Date: 2002-06-06T20:42:41+09:00
Subject: Re: dynamic attr_accessor??

"Holden Glova" <dsafari@xtra.co.nz> wrote in
....
> I don't understand, can you please explain?

Well assuming

---
class A
 def initialize(name)
    type.send(:attr_accessor,name)
    send("#{name}=",name)
  end
end

mamas = A.new('cat')
papas = A.new('dog')



p papas.dog   # => nil
p mamas.cat   # => nil

# since cat and dog are A instance methods
---
on the other hand
---
class A
 def initialize(name)
    class << self; self end.send(:attr_accessor,name)
    send("#{name}=", name)
  end
end

mamas = A.new('cat')
papas = A.new('dog')

p papas.dog  #
p mamas.cat   #
# both raise a non-method errors since cat and dog are
# singleton methods of mama and papa respectively.
---

Thus, as in the ``class_eval'' situation (see Nabu's comments
in another branch of the thread) , you have two semantically
different ``send'' solutions ...

/Christoph