Decorator Pattern using SimpleDelegator

gistfile1.rb

require 'delegate'

class Foo
  attr_accessor :fname, :lname
  def initialize(fname, lname)
    @fname, @lname = fname, lname
  end
end

# create a foo object
foo = Foo.new('john', 'smith')

class FooDecorator < SimpleDelegator
  def full_name
    "#{fname} #{lname}"
  end
end

# create and use a decorated foo
decorated_foo = FooDecorator.new(foo)
puts decorated_foo.full_name