From: Ben Bleything <ben@...>
Date: 2008-06-27T05:32:07+09:00
Subject: Re: question about defined? and y

On Fri, Jun 27, 2008, alandacosta@gmail.com wrote:
> The "!!" should take care of your nil situation when you want a true/
> false. If "defined?(y)" is returning "method", that means you
> previously def'ed y ... maybe even in your .irbrc file (if called from
> irb).

But I'm not sure when you ever actually *care* that it's either true
or false. nil is false, false is false, everything else is true.  The
result is that you generally needn't care what defined? returns.

I've never seen a case where this isn't true, but of course that does
not mean they don't exist :)

Ben