From: Gennady Bystritsky <Gennady.Bystritsky@...>
Date: 2006-06-01T04:30:58+09:00
Subject: Re: class << self ...end - how does this create class methods?

Pickaxe2 in chapter 24 on page 362 ("Classes and Objects") goes into
great extend explaining the "class << object" feature, with "class <<
self" in particular. With pictures and good examples. It may be a good
starting point.

Hope it helps,
Gennady.

> -----Original Message-----
> From: list-bounce@example.com 
> [mailto:list-bounce@example.com] On Behalf Of Wes Gamble
> Sent: Wednesday, May 31, 2006 12:18 PM
> To: ruby-talk ML
> Subject: class << self ...end - how does this create class methods?
> 
> I just ran into a seemingly weird problem until I discovered that the 
> method that I kept trying to call as an instance method was in fact a 
> class method.  But of course, there isn't anything in the 
> signature to 
> indicate that to me.  Apparently, if you do this:
> 
> class << self
>   def x
>   end
> end
> 
> then x is a class method, not an instance method.
> 
> I'm having trouble finding a good explanation of this in the Pickaxe 
> book - is someone willing to give me the low down.
> 
> This appears to be the common idiom for defining class 
> methods and I'd 
> like to understand so I don't waste any more time.
> 
> Thanks,
> Wes
> 
> -- 
> Posted via http://www.ruby-forum.com/.
> 
>