From: Warren Ferguson <warren_e_ferguson@...>
Date: 2010-08-08T08:51:54+09:00
Subject: Re: question about sub-class of array

Aaron D. Gifford wrote:

> Q: Is there any benefit to storing a copy of self in @a? Is there any
> drawback to eliminating the initialize definition in the child class
> and replacing the "@a" in the to_s method with "self"? What am I
> missing?
> 
> Wondering,
> Aaron out.

No, there isn't, my bad. I added the initialize method because I thought 
it might be the source of the original problem. Taking it out and using 
self instead works fine.

I'm stil mystified why substituting the expression for v into 
Bitvector.new(v) fails. Is it because Ruby optimizes that complex 
expression by realizing the expression is of class Array and Bitvector 
is a subclass of array?
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