warmup enumerable

warmup-enumerable-fis002-alexau

module Enumerable
 
  def flatiron_flatten(hashy = @hash)
    hashy.delete_if {|key, value| value == nil}
    hashy.each do |pair|
      if pair[1].class == Hash
        flatiron_flatten(pair[1])
      end
    end
  end
 
end 

class Student
  include Enumerable

  attr_accessor :hash

  def initialize
    @hash = {:a=>"a", :b=>"b", :c=>"c", :d=>nil, :e=> {:f => 'f', :g => nil}}
  end

end

alex = Student.new
puts alex.hash
alex.flatiron_flatten
puts alex.hash