From: Yossef Mendelssohn <ymendel@...>
Date: 2008-11-27T01:47:54+09:00
Subject: Re: Class setter

On Nov 26, 10:43 am, Ves Pasian <keepitsimple...@yahoo.com> wrote:
> For the life of me I can figure out why the setter below returns "v" and
> not nil
>
> class A
>   def initialize(id)
>     @id = id
>   end
>
>   def id
>     @id
>   end
>
>    def id=(v)
>      nil
>    end
> end
>
> a = A.new(1)
> a.id = 2
> => 2

That's just the way setters work in Ruby. Any method ending in = will
return what you pass to it.
That way, it's analogous to setting regular variables, like x = y = z.

On a similar note, though you "configure" the class method .new with
the instance method #initialize, you can't make .new return something
other than an instance of the class just by the return value of
#initialize.

--
-yossef