comp.lang.ruby

David A. Black

1/20/2009 12:49:00 PM

Hi --

On Tue, 20 Jan 2009, Sijo Kg wrote:

> Hi
> I have code like
>
> class A
> class <<self
> def first
> -------
> end
> def second
> ------
> end
> end
> end
>
> What I understood is now the def first and second becomes class
> methods of class A..Am I right? Is that its only use?

class << object puts you in a class definition block for the singleton
class of object. Creating class methods is the most common use case,
but it works on any object (other than a few built-ins that aren't
allowed to have singleton classes).


David

--
David A. Black / Ruby Power and Light, LLC
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