From: Daniel Harple <dharple@...>
Date: 2006-03-15T07:36:28+09:00
Subject: Re: Scope of an @variable


On Mar 14, 2006, at 11:18 PM, Nathan Olberding wrote:

> I was under the impression (newbie alert) that @name was for instances
> and @@name was for classes as a whole (ie, @@ variables change that
> value in all instances of Class). Is there a way to have variables  
> that
> apply to all instances of a Class?

Use an initialize method:

class Person
   def initialize(name="Anonymous")
     @name = name
   end
   attr_accessor :name
   def to_s
     "My name is #{@name}"
   end
end

person = Person.new
puts person # -> My name is Anonymous
person.name = "Fred"
puts person # -> My name is Fred

This should help you: http://ruby-doc.org/docs/ProgrammingRuby

-- Daniel