From: Rick DeNatale <rick.denatale@...>
Date: 2010-08-18T01:21:07+09:00
Subject: Re: question on if / defined?()

On Tue, Aug 17, 2010 at 12:05 PM, Jedrin <jrubiando@gmail.com> wrote:
> assuming x is not defined, why does the statement
>
> x = true if !defined?(x)
>
>
> produce x is nil ?

Because x is defined, this happens at parse time so it doesn't matter
if the assignment is executed or not.

>
> y = true if !defined?(x)
>
>  is no different

Not by itself

y = true if !defined? x

y # => true

I'm guessing you had this in a program AFTER something which defined x

>
> this however works fine:
>
> if !defined?(x)
because at this point x is NOT defined since the parser hasn't yet seen it.
>  x = true
> end

HTH


-- 
Rick DeNatale

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