From: Robert Klemme <shortcutter@...>
Date: 2008-05-06T00:35:03+09:00
Subject: Re: attr_accessor for class variable?

On 05.05.2008 17:03, sayoyo Sayoyo wrote:

> Is there an equivalent for attr_acessor for the class varialbles? or I
> have to write a function each time I wish to exppse the class varaible
> to other clasess?

You can just use attr_* family of methods - but you need to apply them 
to a different object, namely the singleton class of the class object:

irb(main):001:0> class Foo
irb(main):002:1> class<<self
irb(main):003:2> attr_accessor :bar
irb(main):004:2> end
irb(main):005:1> end
=> nil
irb(main):006:0> Foo.bar = 10
=> 10
irb(main):007:0> Foo.bar
=> 10
irb(main):008:0>

Kind regards

	robert