From: matz@... (Yukihiro Matsumoto)
Date: 2003-02-20T01:23:36+09:00
Subject: Re: How to test for existence of instance variable?

Hi,

In message "Re: How to test for existence of instance variable?"
    on 03/02/20, Paul Brannan <pbrannan@atdesk.com> writes:

|>   @foo ||= []
|> 
|> trick cannot be done for attributes without causing warning.
|
|This is only a problem for dynamically-added attributes, since
|attributes that are known when the object is created can (and should) be
|initialized to nil.  To dynamically create an attribute, I need more
|that just a simple assignment anyway, so this trick doesn't work for
|dynamic attributes.

Could you describe "more" in "I need more"?  Something like
AttrWithDefault in [ruby-talk:65182]?

							matz.