From: Farrel Lifson <farrel.lifson@...>
Date: 2006-10-23T19:33:22+09:00
Subject: Re: newbie: class attribute accessors?

On 23/10/06, Diego Virasoro <Diego.Virasoro@gmail.com> wrote:
> > Please explain. Use an example.
>
> >From what I understood, for any instance variable, I can make ruby
> automatically produce the accessors. For example:
>
> class Dog
>    @name
>    @@NumberOfLegs = 4
>
>    attr_accessor :name
> end
>
> x = Animal.new
> ...
> puts x.name
>
>
> However, I would like to do something similar for class variables. So
> for example in the above example, for @@NumberOfLegs.
>
> Is this possible?
>
> Thank you
>
> Diego Virasoro

I don't know if there is an 'attr_accessor' shortcut but you can do it manually
 irb(main):001:0> class Dog
 irb(main):002:1>   def self.number_of_legs
 irb(main):003:2>     @@numberOfLegs
 irb(main):004:2>   end
 irb(main):005:1>   def self.number_of_legs=(value)
 irb(main):006:2>     @@numberOfLegs = value.to_int
 irb(main):007:2>   end
 irb(main):008:1> end
 => nil
 irb(main):009:0> Dog.number_of_legs=5
 => 5
 irb(main):010:0> Dog.number_of_legs
 => 5

Farrel