blog-quiz-intermediate-1b

gistfile1.rb

#instance-specific behavior
puts "kind of Scrollable? #{pane.kind_of?(Scrollable)}"
pane.extend(Scrollable)
pane.scroll 3
puts pane.position
puts "kind of Scrollable? #{pane.kind_of?(Scrollable)}"

#adding behavior to the class

class Pane
  include Scrollable
end

pane = Pane.new "this is the content of a scrollable pane"
pane.scroll 5
puts pane.position
puts "kind of Scrollable? #{pane.kind_of?(Scrollable)}"