From: James Britt <james_b@...>
Date: 2005-12-24T00:12:18+09:00
Subject: Re: Displaying object variables, not obj ID

Tobias Jonch wrote:
> On 12/23/05, Jim Weirich <jim@weirichhouse.org> wrote:
> 
>>
>>Perhaps you are not aware that defining a to_s method in the Chromosome
>>class will only affect how Chromosomes are displayed, nothing else.
> 
> 
> 
> Astonishing as it may seem, I do know ;-)
> 
> I'm not calling to_s from the chromosome class, however, and that does
> matter, right?

You are invoking the Chromosome version of to_s method on instances of 
Chromosome.

When you call to_s on an instance of a class, and you get back that 
ClassName:0xID thing, it means that that object does not have its own 
to_s method defined, so it defaults to calling Object's to_s (which of 
course as no idea how to stingify this particular class).

So you need to give Chromosome instances their own to_s.

James


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