From: Jason Mayer <slamboy@...>
Date: 2007-02-14T05:34:58+09:00
Subject: Re: quick newbie true/false/nil question

------=_Part_138714_31290069.1171398896648
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

On 2/13/07, Jeff <cohen.jeff@gmail.com> wrote:
>
>
>
> On Feb 13, 2:24 pm, "Jason Mayer" <slam...@gmail.com> wrote:
> > I ran across this line of code today, and it doesn't make sense to me.
> >
> >   if ((klass = CommDispatcher.check_hash(path)) == nil)
> >
> > How would that value ever equal nil?  I thought that if klass failed to
> be
> > assigned to the value of CommDispatcher.check_hash(path) then the value
> > would be false and if it was assigned to the value of
> > CommDispatcher.check_hash(path) it would be true..  How would it be nil?
> >
> > Thanks!
>
> I'm not familiar with the CommDispatcher class, but it looks like
> klass will be assigned whatever the return value of check_hash()
> returns, whether that's nil or false or something else.
>
> Jeff



Right... but isn't the assignment of the value 'nil' going to return true
since the assignment succeeded?  I remember screwing up a program by
forgetting to put in the extra = sign once... my if blah = blah2 statement
always returned true because the assignment occurred.

------=_Part_138714_31290069.1171398896648--