Class Instance Variables in Ruby.

class_instance_vars.rb

class ClassVarTest
  @variable = "Class Variable"

  def self.get_class_variable
    @variable
  end

  def get_object_variable
    @variable
  end

  def define_variable
    @variable = "Instance Variable"
  end
end



 > ClassVarTest.get_class_variable
 => "Class Variable"

 > object = ClassVarTest.new

 > object.get_object_variable
 => nil

 > object.define_variable
 > object.get_object_variable
 => "Instance Variable"

 > ClassVarTest.get_class_variable
 => "Class Variable"