From: Vladimir Agafonkin <agafonkin@...>
Date: 2006-01-25T00:55:21+09:00
Subject: [newbie] The Duck Problem, or accessing one instance var from another

Hi!

What is the best way to access class' instance variables from a method
of another instance variable of the same class that is a class itself?
:-)

OK, Let's say I have Duck class with an instance variable
@quack_behaviour of QuackBehaviour class inside. Duck#quack method
calls one of the QuackBehaviour methods, and I want to access some of
the intance variables (say, @name) of the caller Duck object from that
method.

One way is to set an attr_accessor :name (or use instance_variable_get)
and pass "self" as a parameter to the @quack_behaviour method. But it
seems for me that it is not the most appropriate way of doing this. Or
is it?