yangsu · January 28, 2013 03:54
diff --git a/ruby-open-classes.rb b/ruby-open-classes.rb
 class NilClass
  def blank?
    true
  end
 end

 class String
  def blank?
    self.size == 0
  end
 end

 ["", "person", nil].each do |element|
  puts element unless element.blank?
 end
	class NilClass
	def blank?
	true
	end
	end

	class String
	def blank?
	self.size == 0
	end
	end

	["", "person", nil].each do \|element\|
	puts element unless element.blank?
	end