From: "Brian Schröder" <ruby.brian@...>
Date: 2005-08-19T01:23:51+09:00
Subject: Re: unless statement... why oh why?

On 18/08/05, Zach Dennis <zdennis@mktec.com> wrote:
> thr = Thread.new{}
> # thread dies
> 
> "HERE" if not thr or not thr.alive? # this works!!

(not a) or (not b) <=> not (a and b)
  <=/=> 
not (a or b) <=> (not a) and (not b)

> "HERE" unless thr or thr.alive? # doesn't work!! WHY?
> "HERE" unless thr and thr.alive? # works, but why?
> 
> I dont see why the unless/and works when the unless/or should be the one
> short-circuting no?
> 
> Thanks,
> 
> Zach
> 

brian

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