From: Chad Perrin <code@...>
Date: 2012-07-07T08:49:37+09:00
Subject: Re: basic queries

On Fri, Jul 06, 2012 at 11:30:52PM +0900, John Lee wrote:
> Consider the following code:
> 
> class Drawing
>  def Drawing.give_me_a_circle     <-------
>   Circle.new
>  end
> 
>  class Line
>  end
> 
>  class Circle
>   def what_am_i
>    "This is a circle"
>   end
>  end
> end
> ---------------------------------------------
> 
> why must type "def Drawing.give_me_a_circle"?
> why can't i type "def give_me_a_cirlce" instead?

As already pointed out, "def Drawing.give_me_a_circle" defines a class
method, and not an instance method.  You can also use "self" instead of
"Drawing" there:

    def self.give_me_a_circle

That should have the same effect as this:

    def Drawing.give_me_a_circle

. . . unless I've overlooked something.  I'm pretty worn out for a Friday
evening.

-- 
Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ]