On Wed, Sep 22, 2010 at 5:35 PM, Jarmo Pertman <jarmo.p / gmail.com> wrote:
> Hello!
>
> I've just landed upon a very interesting landmine by using defined?
>
> Consider the following code:
>
> # a.rb
> module A
>  ¨ÂõôïìïáºÂ¢â®òâ¢
> end
>
> defined?(A::B::C)
> p A::B
> p A::B.new.one
> p A::B.new.two
>
>
> # b.rb
> module A
>  ¨Âìáóó >  ¨Âõô¢ìïáäéîç>  ¨Âåæ ïîå» ±» åî>
>  ¨Âáéóå ¢îï­îï­îï¡>
>  ¨Âåæ ô÷ï» ²» åî>  ¨Âîä
> end
>
> So, when running a.rb what would you expect?
>
> I would expect defined? line to raise an RuntimeError,...

Why?

defined? is there to check WITHOUT raising an runtime error

ruby-1.8.7-p302 > defined? Blatz
 => nil
ruby-1.8.7-p302 > defined? A::B::C
 => nil
ruby-1.8.7-p302 > defined? Object
 => "constant"

And it's the same for 1.9.2

ruby-1.9.2-p0 > defined? Blatz
 => nil
ruby-1.9.2-p0 > defined? A::B::C
 => nil
ruby-1.9.2-p0 > defined? Object
 => "constant"



-- 
Rick DeNatale

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