ruby类对象和对象

class Box
  def initialize(w,h)
    @width,@height=w,h
  end
  def getArea
    puts "class of self #{self.class}"

    @height*@width
  end
  puts "class of self #{self.class}"
  puts "name o f #{self.name}"
end
box=Box.new(12,4)
box.getArea

class of self Class
name o f Box
class of self Box