From: Phlip <phlip2005@...>
Date: 2008-08-25T05:55:59+09:00
Subject: Re: Why 'if 0' succeeds in Ruby

Stefan Rusterholz wrote:
> matu wrote:
>> Dave Bass wrote:
>>
>>> False and nil are two quite different concepts and should not be
>>> conflated.
>> I agree with you. I am also used to this. nil should never == true, and
>> neither be == false. Every comparison with nil should just fail.
> 
> Well, I suggest you actually try the expression 'nil == false' in irb.
> I think you'll be happy to see that it *is* false. Nil in ruby does NOT 
> equal false.
> As in my earlier post, it only is conditionally false, which is a whole 
> different beast.

And he covered that in his examples. He was using == false as a shortcut to say 
"conditionally false".