From: Gennady <gfb@...>
Date: 2004-08-11T01:58:42+09:00
Subject: Re: Singleton class methods

Kyle Putnam wrote:
> Hello,
> 
> It seems these two syntaxes accomplish the same thing, or are there
> differences?
> 
>     class Foo
>         class << self
>             def bar
>                 # ...
>             end
>         end
>     end
> 
> compared to...
> 
>     class Foo
>         def Foo.bar
>             # ...
>         end
>     end
> 
> Cheers,
>     Kyle
> 
> 

Exactly the same from the functionality point of view (it differs in 
implementation, though). I personally prefer the first form, as when it 
comes to renaming a class, you can do it in one place. Also with this 
form you can do other nice things such as defining class attribute 
accessors with attr_reader, attr_writer or attr_accessor.

Gennady.