From: Artur Merke <merke@...>
Date: 2004-12-10T19:07:26+09:00
Subject: adding object attributes

Hi

class A
  attr_accessor :a
end

a= A.new
b= A.new

#this adds a new attribute to the object 'b'
def b.dummy
  @dummy
end
def b.dummy=(val)
  @dummy= val
end

b.dummy= "hello world"
print "\n", b.dummy

Is there a shorthand notation for adding attributes to an object?

For example one could think of the equivalent of adding an attribute to a
class, like

b.attr_accessor(:dummy)  #illegal in ruby

Of course I could define a sort of public 'attr_accessor' for the class
'A' by myself, but I do NOT want to change/extend the class, only some objects.

any suggestions?

Artur